TW202400734A - Surface treatment agent - Google Patents

Abstract

The present disclosure provides fluoropolyether group-containing polyoxyalkylene compounds represented by component (B): which is represented by formula (B1) or (B2): R<SP>FB1</SP> - X<SP>B</SP> - R<SP>B</SP> (B1) R<SP>B</SP> - X<SP>B</SP> -R<SP>FB2</SP> - X<SP>B</SP> - R<SP>B</SP> (B2) [In the formula: details of each symbol are described in the specification].

Description

surface treatment agent

This disclosure relates to surface treatment agents.

It is known that if a certain fluoropolyether-based silane compound is used for surface treatment of a substrate, it can provide excellent water repellency, oil repellency, and antifouling properties. A layer obtained from a surface treatment agent containing a silane compound containing a fluoropolyether group (hereinafter also referred to as a "surface treatment layer") is applied as a so-called functional film to glass, plastics, fibers, sanitary products, etc. Various base materials such as supplies and building materials.

[Prior technical literature]

[Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 2014-218639

The fluorine-containing polyether group silane compound described in Patent Document 1 can provide a surface treatment layer with excellent functions, but there is still a demand for a surface treatment layer with higher friction durability.

The purpose of this disclosure is to provide an article having a surface treatment layer with higher friction durability.

This disclosure includes the following aspects.

[1] A fluoropolyether-based polyoxyalkylene compound, which is component (B) represented by the following formula (B1) or (B2):

R ^FB1 -X ^B -R ^B (B1)

R ^B -X ^B -R ^FB2 -X ^B -R ^B (B2)

In the formula:

R ^FB1 is Rf ¹ -R ^F -O _q -,

R ^FB2 is -Rf ² _p -R ^F -O _q -,

R ^F are independently divalent fluoropolyether groups,

Rf ¹ may be a C _1-16 alkyl group substituted by 1 or more than 1 fluorine atom,

Rf ² may be a C _1-6 alkylene group substituted by 1 or more than 1 fluorine atom,

p is 0 or 1,

q is independently 0 or 1,

X ^B is independently a single bond or a divalent base,

R ^B are each independently an alkylene oxide-containing group.

[2] The polyoxyalkylene compound containing a fluoropolyether group as described in the above [1], wherein the aforementioned oxyalkylene-containing groups are independently groups represented by the following formula:

-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² , or

-X ^E (-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² ) _r2

In the formula:

R ⁶¹ are each independently a single bond or C _1-6 alkylene group,

R ⁶² are each independently a hydrogen atom, C _1-6 alkyl group or C _1-6 alkoxy group,

R ⁶³ are each independently C _1-6 alkylene group,

b3 are independently integers from 1 to 6,

X ^E is 3 to 10 price base,

r2 is an integer from 2 to 9, and is 1 less than the valence of X ^E.

[3] The fluoropolyether group-containing polyoxyalkylene compound as described in the above [1] or [2], wherein the aforementioned oxyalkylene-containing groups are each independently a group represented by the following formula:

-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶²

In the formula:

R ⁶¹ is a single bond or C _1-6 alkylene group,

R ⁶² is a hydrogen atom, C _1-6 alkyl group or C _1-6 alkoxy group,

R ⁶³ are each independently C _1-6 alkylene group,

b3 is an integer from 1 to 6.

[4] The fluoropolyether group-containing polyoxyalkylene compound as described in the above [2] or [3], wherein R ⁶³ is a C _1-3 alkylene group.

[5] The fluoropolyether group-containing polyoxyalkylene compound as described in any one of the above [1] to [4], wherein X ^B is each independently a single bond or -(R ⁶⁷ ) _b1 -(R ⁶⁸ ) _b2- ,

In the formula:

R ⁶⁷ are each independently C _1-6 alkylene group,

R ⁶⁸ is independently an oxygen atom, a sulfur atom, CO, NR ⁶⁹ , CONR ⁶⁹ , NR ⁶⁹ CO or C _6-12 aryl group,

R ⁶⁹ are each independently a hydrogen atom or a C _1-6 alkyl group,

b1 is an integer from 0 to 6,

b2 is an integer from 0 to 6,

The total of b1 and b2 is 1 or more,

The order of existence of each repeating unit marked b1 or b2 and enclosed in parentheses is arbitrary in the formula.

[6] The fluoropolyether group-containing polyoxyalkylene compound as described in any one of the above [1] to [5], wherein X ^B is independently a single bond, C _1-6 alkylene group or -R ⁶⁴ -OR ^65- ,

R ⁶⁴ is a single bond or C _1-6 alkylene group,

R ⁶⁵ is a single bond or C _1-6 alkylene group.

[7] The polyoxyalkylene compound containing a fluoropolyether group as described in any one of the above [1] to [6], wherein R ^F are each independently a group represented by the following formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

In the formula:

R ^Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom,

a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. .

[8] The fluoropolyether group-containing polyoxyalkylene compound as described in any one of the above [1] to [7], wherein Rf ¹ is a C _1-16 perfluoroalkyl group,

Rf ² is C _1-6 perfluoroalkyl group,

R ^F are independently the basis represented by the following formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

In the formula:

a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. .

[9] The fluoropolyether group-containing polyoxyalkylene compound as described in any one of the above [1] to [8], wherein R ^F are independently represented by the following formulas (f1), (f2), (f3) ), (f4), (f5) or (f6):

-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)

In the formula, d is an integer from 1 to 200, and e is 0 or 1;

-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)

In the formula, c and d are independently integers from 0 to 30,

e and f are independently integers from 1 to 200,

The sum of c, d, e and f is an integer from 10 to 200,

The order of existence of each repeating unit marked c, d, e or f and enclosed in parentheses is arbitrary in the formula;

-(R ⁶ -R ⁷ ) _g - (f3)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups selected from these groups,

g is an integer from 2 to 100;

-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

R ^6' is OCF ₂ or OC ₂ F ₄ ,

R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

g is an integer from 2 to 100,

g’ is an integer from 2 to 100,

R ^r is the following formula:

In the formula, * represents the bonding position;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)

In the formula, e is an integer from 1 to 200, a, b, c, d and f are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)

In the formula, f is an integer from 1 to 200, a, b, c, d and e are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary.

[10] A surface treatment agent containing: component (A): a fluorine-containing polyether-based silane compound, and

Component (B): the fluorine-containing polyether-based polyoxyalkylene compound described in any one of [1] to [9] above.

[11] The surface treatment agent according to the above [10], wherein the fluorine-containing polyether group silane compound is a compound represented by the following formula (A1) or (A2):

R ^FA1 _α1 -X ^A -R ^Si _β1 (A1)

R ^Si _γ1 -X ^A -R ^FA2 -X ^A -R ^Si _γ1 (A2)

In the formula:

R ^FA1 are independently Rf ¹ -R ^F -O _q -,

R ^FA2 is -Rf ² _p -R ^F -O _q -,

R ^F are independently divalent fluoropolyether groups,

Rf ¹ is a C _1-16 alkyl group which may be substituted by 1 or more than 1 fluorine atom,

Rf ² is a C _1-6 alkylene group which may be substituted by 1 or more than 1 fluorine atom,

p is 0 or 1,

q is independently 0 or 1,

R ^Si is each independently a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a monovalent group,

At least one R ^Si is a univalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group,

X ^A are each independently a single bond or a valence base of 2 to 10,

α1 is an integer from 1 to 9,

β31 is an integer from 1 to 9,

γ1 is each independently an integer from 1 to 9.

[12] The surface treatment agent as described in the above [11], wherein in the formulas (A1) and (A2), R ^F are each independently a group represented by the following formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

In the formula:

R ^Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom,

a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. .

[13] The surface treatment agent as described in the above [11] or [12], wherein in formulas (A1) and (A2), Rf ¹ is a C _1-16 perfluoroalkyl group,

Rf ² is C _1-6 perfluoroalkyl group,

R ^F are independently the basis represented by the following formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

In the formula:

a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. .

[14] The surface treatment agent according to any one of the above [11] to [13], wherein in the formulas (A1) and (A2), R ^F is each independently represented by the following formula (f1), (f2) ), (f3), (f4), (f5) or (f6):

-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)

In the formula, d is an integer from 1 to 200, and e is 0 or 1;

-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)

In the formula, c and d are independently integers from 0 to 30,

e and f are independently integers from 1 to 200,

The sum of c, d, e and f is an integer from 10 to 200,

The order of existence of each repeating unit marked c, d, e or f and enclosed in parentheses is arbitrary in the formula;

-(R ⁶ -R ⁷ ) _g - (f3)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups selected from these groups,

g is an integer from 2 to 100;

-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

R ^6' is OCF ₂ or OC ₂ F ₄ ,

R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

g is an integer from 2 to 100,

g’ is an integer from 2 to 100,

R ^r is the following formula:

In the formula, * represents the bonding position;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)

In the formula, e is an integer from 1 to 200, a, b, c, d and f are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)

In the formula, f is an integer from 1 to 200, a, b, c, d and e are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary.

[15] The surface treatment agent according to any one of the above [11] to [14], wherein R ^Si is represented by the following formula (S1), (S2), (S3), (S4) or (S5) Representation basis:

- SiR ¹¹ _n1 R ¹² _3-n1 (S2)

- SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S3)

- CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S4)

- NR ^g1 R ^h1 (S5)

In the formula:

R ¹¹ are each independently a hydroxyl group or a hydrolyzable group,

R ¹² is each independently a hydrogen atom or a monovalent organic group,

n1 is an integer from 0 to 3 independently in each (SiR ¹¹ _n1 R ¹² _3-n1 ) unit,

X ¹¹ is independently a single bond or a divalent base,

R ¹³ is each independently a hydrogen atom or a monovalent organic group,

t is independently an integer above 2,

R ¹⁴ is independently a hydrogen atom, a halogen atom or -X ¹¹ -SiR ¹¹ _n1 R ¹² _3-n1 ,

R ¹⁵ is each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms,

R ^a1 are independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ;

Z ¹ are independently 2-valent bases,

R ²¹ are independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ;

R ²² are each independently a hydroxyl group or a hydrolyzable group,

R ²³ is each independently a hydrogen atom or a monovalent organic group,

p1 are independently integers from 0 to 3,

q1 are independently integers from 0 to 3,

r1 are independently integers from 0 to 3,

The total of p1, q1 and r1 in the unit (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) is 3,

Z ^1' are independently 2-valent bases,

R ^21' are independently -Z ^1” -SiR ^22” _q1” R ^23” _r1” ;

R ^22' are each independently a hydroxyl group or a hydrolyzable group,

R ^23' are each independently a hydrogen atom or a monovalent organic group,

p1’ are independently integers from 0 to 3,

q1’ are independently integers from 0 to 3,

r1’ are independently integers from 0 to 3,

The total of p1', q1' and r1' in the (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit is 3,

Z ^1” are independently 2-valent bases,

R ^22″ are each independently a hydroxyl group or a hydrolyzable group,

R ^23″ are each independently a hydrogen atom or a monovalent organic group,

q1” are independently integers from 0 to 3,

r1” are independently integers from 0 to 3,

The total of q1” and r1” in the unit (SiR ^22” _q1” R ^23” _r1” ) is 3,

R ^b1 are each independently a hydroxyl group or a hydrolyzable group,

R ^c1 are each independently a hydrogen atom or a monovalent organic group,

k1 are independently integers from 0 to 3,

l1 are independently integers from 0 to 3,

m1 are independently integers from 0 to 3,

The total of k1, l1 and m1 in the (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit is 3,

R ^d1 are independently -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 ;

Z ² are independently single bond and divalent base;

R ³¹ are independently -Z ^2' -CR ^32' _q2' R ^33' _r2' ;

R ³² are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 ,

R ³³ is independently a hydrogen atom, a hydroxyl group or a monovalent organic group,

p2 are independently integers from 0 to 3,

q2 are independently integers from 0 to 3,

r2 are independently integers from 0 to 3,

The total of p2, q2 and r2 in the unit (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) is 3,

Z ^2' is independently a single bond or a divalent base;

R ^32' are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 ,

R ^33' are each independently a hydrogen atom, a hydroxyl group or a monovalent organic group,

q2’ are independently integers from 0 to 3,

r2’ are independently integers from 0 to 3,

The total of q2' and r2' in the (CR ^32' _q2' R ^33' _r2' ) unit is 3,

Z ³ is independently a single bond or a divalent base;

R ³⁴ are each independently a hydroxyl group or a hydrolyzable group,

R ³⁵ is each independently a hydrogen atom or a monovalent organic group,

n2 are independently integers from 0 to 3,

R ^e1 are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 ,

R ^f1 are each independently a hydrogen atom, a hydroxyl group or a monovalent organic group,

k2 are independently integers from 0 to 3,

l2 are independently integers from 0 to 3,

m2 are independently integers from 0 to 3,

The total of k2, l2 and m2 in the (CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ) unit is 3,

R ^g1 and R ^h1 are independently -Z ⁴ -SiR ¹¹ _n1 R ¹² _3-n1 , -Z ⁴ -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 or -Z ⁴ -CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ,

Z ⁴ is independently a single bond or a divalent base,

However, in formulas (S1), (S2), (S3), (S4) and (S5), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group.

[16] The surface treatment agent according to any one of the above [11] to [15], wherein α1, β1 and γ1 are 1, and X ^A is a divalent group.

[17] The surface treatment agent as described in any one of the above [11] to [16], wherein X ^A is a single bond or a divalent group represented by the following formula:

-(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 -

In the formula:

R ⁵¹ is a single bond, -(CH ₂ ) _s5 - or o-, m- or p-phenylene group,

s5 is an integer from 1 to 20,

X ⁵¹ is -(X ⁵² ) _l5 -,

X ⁵² is independently selected from -O-, -S-, o-, m- or p-phenylene, -C(O)O-, -Si(R ⁵³ ) ₂ -, -(Si(R ⁵³ ) ₂ O) _m5 -The base of the group consisting of -Si(R ⁵³ ) ₂ -, -CONR ⁵⁴ -, -O-CONR ⁵⁴ -, -NR ⁵⁴ - and -(CH ₂ ) _n5 -,

R ⁵³ is independently phenyl, C _1-6 alkyl or C _1-6 alkoxy,

R ⁵⁴ is independently a hydrogen atom, a phenyl group or a C _1-6 alkyl group,

m5 are independently integers from 1 to 100,

n5 are independently integers from 1 to 20,

l5 is an integer from 1 to 10,

p5 is 0 or 1,

q5 is 0 or 1,

Here, at least one of p5 and q5 is 1, and the order of existence of the repeating units marked with p5 or q5 and enclosed in parentheses is arbitrary,

The right side is bonded to R ^Si .

[18] The surface treatment agent according to any one of the above [11] to [15], wherein X ^A is a group represented by the following formula:

In the formula, X ^a is a single bond or a divalent base.

[19] The surface treatment agent according to any one of the above [10] to [18], wherein the content of the component (B) is 1 to 70 mass based on the total of the component (A) and the component (B). %.

[20] The surface treatment agent according to any one of the above [10] to [19], wherein the content of the component (B) is 1 to 40 mass based on the total of the component (A) and the component (B). %.

[21] The surface treatment agent as described in any one of the above [10] to [20], which further contains one or more types selected from the group consisting of fluorine-containing oil, polysilicone oil, alcohol and catalyst. Other ingredients.

[22] The surface treatment agent according to any one of [10] to [21] above, which further contains a solvent.

[23] The surface treatment agent according to any one of the above [10] to [22], which is used as an antifouling coating agent or a waterproof coating agent.

[24] Particles containing the surface treatment agent described in any one of [10] to [23] above.

[25] An article comprising: a base material; and a layer formed on the base material by the surface treatment agent according to any one of the above [10] to [24].

[26] The article according to the above [25], wherein the base material is a glass base material.

[27] The article described in [25] above, which is an optical component.

According to the present disclosure, it is possible to provide a surface treatment agent capable of imparting a surface treatment layer with higher friction durability.

When used in this specification, the "monovalent organic group" means a monovalent group containing carbon. The monovalent organic group is not particularly limited and may be a hydrocarbon group or a derivative thereof. The so-called derivatives of hydrocarbon groups mean one or more N, O, S, Si, amide, sulfonyl, siloxane, carbonyl, carbonyloxy, etc. groups at the end of the hydrocarbon group or in the molecular chain. the foundation. When simply expressed as "organic group", it means a monovalent organic group. In addition, the "bivalent organic group" means a divalent group containing carbon. Examples of the divalent organic group include a divalent group obtained by detaching one more hydrogen atom from the organic group. The same applies to an organic group having a valence of 3 or more, and means a group obtained by detaching a predetermined number of hydrogen atoms from the organic group.

As used in this specification, "hydrocarbyl group" means a group containing carbon and hydrogen, and is a group obtained by removing a hydrogen atom from a hydrocarbon. The hydrocarbon group is not particularly limited, and examples thereof include C _1-20 hydrocarbon groups, such as aliphatic hydrocarbon groups, aromatic hydrocarbon groups, and the like. The above-mentioned "aliphatic hydrocarbon group" may be linear, branched, or cyclic, and may be saturated or unsaturated. In addition, the hydrocarbon group may contain one or more than one ring structure. The hydrocarbyl group may be substituted with 1 or more than 1 substituent.

When used in this specification, the substituent of the "hydrocarbyl group" is not particularly limited, and may include, for example, one or more groups selected from the following: halogen atom; C _1-6 alkyl, C 2-6 alkenyl, C _2-6 alkynyl, C _3-10 cycloalkyl, _{C 3-10 unsaturated} cycloalkyl, 5 to 10 membered hetero groups substituted by halogen atoms Silicon group, 5 to 10-membered unsaturated heterosilyl group, C _6-10 aryl group and 5 to 10-membered heteroaryl group.

The term "hydrolyzable group" used in this specification means a group that can undergo hydrolysis reaction, that is, a group that can be separated from the main skeleton of the compound through a hydrolysis reaction. Examples of hydrolyzable groups include: -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO, halogen (in this equation, R ^h1 represents substituted or unsubstituted Alkyl group having 1 to 4 carbon atoms), etc., preferably -OR ^h1 (that is, alkoxy group). Examples of R ^h1 include unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl, and isobutyl; and substituted alkyl groups such as chloromethyl. Among them, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred.

(surface treatment agent)

The surface treatment agent of the present disclosure contains: component (A): fluorine-containing polyether-based silane compound, and

Component (B): a fluoropolyether-based polyoxyalkylene compound represented by the following formula (B1) or (B2),

R ^FB1 -X ^B -R ^B (B1)

R ^B -X ^B -R ^FB2 -X ^B -R ^B (B2)

In the formula:

R ^FB1 is Rf ¹ -R ^F -O _q -,

R ^FB2 is -Rf ² _p -R ^F -O _q -,

R ^F are independently divalent fluoropolyether groups,

Rf ¹ may be a C _1-16 alkyl group substituted by 1 or more than 1 fluorine atom,

Rf ² may be a C _1-6 alkylene group substituted by 1 or more than 1 fluorine atom,

p is 0 or 1,

q is independently 0 or 1,

X ^B is independently a single bond or a divalent base,

R ^B are each independently an alkylene oxide-containing group.

The surface treatment agent disclosed in the present disclosure can provide a surface treatment layer with excellent friction durability by containing a polyoxyalkylene compound containing a fluorine-containing polyether group as component (B).

(Fluorinated polyether-based silane compound)

The above-mentioned fluoropolyether group-containing silane compound is a compound containing a fluoropolyether group and a hydrolyzable silane group.

In one aspect, the fluorine-containing polyether group-containing silane compound is a fluorine-containing polyether group-containing silane compound represented by the following formula (A1) or (A2):

R ^FA1 _α1 -X ^A -R ^Si _β1 (A1)

R ^Si _γ1 -X ^A -R ^FA2 -X ^A -R ^Si _γ1 (A2)

In the formula:

R ^FA1 is Rf ¹ -R ^F -O _q -,

R ^FA2 is -Rf ² _p -R ^F -O _q -,

R ^F are independently divalent fluoropolyether groups,

Rf ¹ is a C _1-16 alkyl group which may be substituted by 1 or more than 1 fluorine atom,

Rf ² is a C _1-6 alkylene group which may be substituted by 1 or more than 1 fluorine atom,

p is 0 or 1,

q is independently 0 or 1,

R ^Si is each independently a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a monovalent group,

At least one R ^Si is a univalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group,

X ^A are each independently a single bond or a valence base of 2 to 10,

α1 is an integer from 1 to 9,

β1 is an integer from 1 to 9,

γ1 is each independently an integer from 1 to 9.

In formula (A1), R ^FA1 is Rf ¹ -R ^F -O _q -.

In formula (A2), R ^FA2 is -Rf ² _p -R ^F -O _q -.

In formulas (A1) and (A2), Rf ¹ is a C _1-16 alkyl group which may be substituted by 1 or more than 1 fluorine atom.

The "C _1-16 alkyl group" in the above-mentioned C _1-16 alkyl group which may be substituted by one or more fluorine atoms may be a straight chain or a branched chain, preferably a straight chain or a branched chain. The C _1-6 alkyl group, especially the C _1-3 alkyl group, is preferably a linear C _1-6 alkyl group, especially the C _1-3 alkyl group.

Rf ¹ is preferably a C _1-16 alkyl group substituted by one or more fluorine atoms, especially a CF ₂ HC _1-15 perfluoroalkyl group, and more preferably a C _1-16 perfluoro group. alkyl.

The above-mentioned C _1-16 perfluoroalkyl group can be a straight chain or a branched chain, preferably a straight chain or branched chain C _1-6 perfluoroalkyl group, especially a C _1-3 perfluoroalkyl group, especially It is a linear C _1-6 perfluoroalkyl group, especially a C _1-3 perfluoroalkyl group, specifically -CF ₃ , -CF ₂ CF ₃ or -CF ₂ CF ₂ CF ₃ .

In formulas (A1) and (A2), Rf ² is a C _1-6 alkylene group which may be substituted by one or more than one fluorine atom.

The "C _1-6 alkylene group" in the above-mentioned C _1-6 alkylene group which may be substituted by one or more fluorine atoms can be a straight chain or a branched chain, preferably a straight chain or a branched chain. The branched chain C _1-3 alkylene group is particularly preferably a linear C _1-3 alkylene group.

Rf ² is preferably a C _1-6 alkylene group substituted by one or more fluorine atoms, especially a C _1-6 perfluoroalkylene group, and more preferably a C _1-3 perfluoroalkylene group. alkyl.

The above-mentioned C _1-6 perfluoroalkylene group can be a straight chain or a branched chain, preferably a straight chain or branched chain C _1-3 perfluoroalkylene group, especially a straight chain C _1-3 perfluoroalkylene group. The fluoroalkylene group is specifically -CF ₂ -, -CF ₂ CF ₂ - or -CF ₂ CF ₂ CF ₂ -.

In the above formula, p is 0 or 1. In a state, p is 0. In other modalities, p is 1.

In the above formula, q is independently 0 or 1. In one state, q is 0. In other modalities, q is 1.

In formulas (A1) and (A2), R ^F is each independently a divalent fluoropolyether group.

R ^F is preferably a base represented by the following formula:

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -

In the formula:

R ^Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom,

a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. .

R ^Fa is preferably a hydrogen atom or a fluorine atom, particularly preferably a fluorine atom. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more.

It is preferable that a, b, c, d, e and f are each independently an integer from 0 to 100, particularly preferably an integer from 0 to 50.

The sum of a, b, c, d, e and f is preferably 5 or more, particularly 10 or more, more preferably 20 or more, for example, 25 or more or 30 or more. The sum of a, b, c, d, e and f is preferably 200 or less, especially 100 or less, more preferably 60 or less, for example, it can be 50 or less or 30 or less.

These repeating units may be linear or branched, and may also contain cyclic structures. For example, -(OC ₆ F ₁₂ )- can be -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ )CF ₂ )- , -(OCF ₂ CF ₂ CF ₂ CF ₂ CF(CF ₃ ))-etc. -(OC ₅ F ₁₀ )- can be -(OCF ₂ CF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ ) CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF(CF ₃ )CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ CF(CF ₃ ))-, etc. -(OC ₄ F ₈ )- can be -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ )- ,-(OCF ₂ CF ₂ CF(CF ₃ ))-,-(OC(CF ₃ ) ₂ CF ₂ )-,-(OCF ₂ C(CF ₃ ) ₂ )-,-(OCF(CF ₃ )CF( Any one of CF ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and -(OCF ₂ CF(C ₂ F ₅ ))-. -(OC ₃ F ₆ )- (that is, in the above formula, R ^Fa is a fluorine atom) can be -(OCF ₂ CF ₂ CF ₂ )-, -(OCF ₂ CF ₂ CF ₂ )- and -(OCF ₂ CF(CF ₃ )) - any of them. -(OC ₂ F ₄ )- may be any one of -(OCF ₂ CF ₂ )- and -(OCF(CF ₃ ))-.

The above-mentioned ring structure may be a three-member ring, a four-member ring, a five-member ring or a six-member ring as described below.

In the formula, * represents the bonding position.

The above-mentioned ring structure is preferably a four-member ring, a five-member ring or a six-member ring, and particularly preferably a four-member ring or a six-member ring.

The repeating unit having a ring structure is preferably the following unit.

In the formula, * represents the bonding position.

In one aspect, the repeating units are linear. By configuring the above repeating units into a linear chain, the surface smoothness, friction durability, etc. of the surface treatment layer can be improved.

In one aspect, the repeating units are in the form of branched chains. By configuring the above repeating units in a branched chain shape, the dynamic friction coefficient of the surface treatment layer can be increased.

In one form, R ^F are each independently a base represented by any one of the following formulas (f1) to (f6).

-(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1)

In the formula, d is an integer from 1 to 200, e is 0 or 1, preferably 0;

-(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2)

In the formula, c and d are each independently an integer from 0 to 30, e and f are each independently an integer from 1 to 200,

The sum of c, d, e and f is 2 or more,

The order of existence of each repeating unit marked c, d, e or f and enclosed in parentheses is arbitrary in the formula;

-(R ⁶ -R ⁷ ) _g - (f3)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

g is an integer from 2 to 100;

-(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4)

In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ ,

R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

R ^6' is OCF ₂ or OC ₂ F ₄ ,

R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups,

g is an integer from 2 to 100,

g’ is an integer from 2 to 100,

R ^r is the following formula:

In the formula, * represents the bonding position;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5)

In the formula, e is an integer from 1 to 200, a, b, c, d and f are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary;

-(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6)

In the formula, f is an integer from 1 to 200, a, b, c, d and e are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary.

In the above formula (f1), d is preferably an integer of 5 to 200, particularly 10 to 100, more preferably 15 to 50, for example, 25 to 35. OC ₃ F ₆ in the above formula (f1) is preferably (OCF ₂ CF ₂ CF ₂ ), (OCF (CF ₃ )CF ₂ ) or (OCF ₂ CF (CF ₃ )), especially (OCF ₂ CF ₂ CF ₂ ). In one state, e is 0. In other modalities, e is 1. (OC ₂ F ₄ ) in the above formula (f1) is preferably (OCF ₂ CF ₂ ) or (OCF (CF ₃ )), particularly preferably (OCF ₂ CF ₂ ).

In the above formula (f2), e and f are preferably each independently an integer of 5 to 200, particularly preferably an integer of 10 to 200. In addition, the sum of c, d, e and f is preferably 5 or more, particularly 10 or more, and may be 15 or more or 20 or more, for example. In one form, the above formula (f2) is preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _c -(OCF ₂ CF ₂ CF ₂ ) _d -(OCF ₂ CF ₂ ) _e -(OCF ₂ ) _f -The basis represented. In other aspects, formula (f2) may be a base represented by -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f -.

In the above formula (f3), R ⁶ is preferably OC ₂ F ₄ . In the above (f3), R ⁷ is preferably a group selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F ₈ or a combination of 2 or 3 groups independently selected from these groups, particularly preferably is OC ₃ F ₆ or OC ₄ F ₈ . The combination of 2 or 3 groups independently selected from OC ₂ F ₄ , OC ₃ F ₆ and OC ₄ F ₈ is not particularly limited, and examples thereof include: -OC ₂ F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ -, -OC ₃ F ₆ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₄ F ₈ -, -OC ₄ F ₈ OC ₄ F ₈ - , -OC ₄ F ₈ OC ₃ F ₆ -, -OC ₄ F ₈ OC ₂ F ₄ -, -OC ₂ F ₄ OC 2 F ₄ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₂ F _{4 OC 4 F 8} -, -OC ₂ F ₄ OC ₃ F ₆ OC ₂ F ₄ -, -OC ₂ F ₄ OC ₃ F ₆ OC ₃ F ₆ -, -OC ₂ F ₄ OC ₄ F ₈ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₂ F ₄ -, -OC ₃ F ₆ OC ₂ F ₄ OC ₃ F ₆ -, -OC ₃ F ₆ OC ₃ F ₆ OC ₂ F ₄ -and-OC ₄ F ₈ OC ₂ F ₄ OC ₂ F ₄ -etc. In the above formula (f3), g is preferably an integer of 3 or more, and particularly preferably 5 or more. The above g is preferably an integer of 50 or less. In the above formula (f3), OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ may be either linear or branched chains, and linear chains are preferred. In this aspect, the above formula (f3) is preferably -(OC ₂ F ₄ -OC ₃ F ₆ ) _g - or -(OC ₂ F ₄ -OC ₄ F ₈ ) _g -.

In the above-mentioned formula (f4), R ⁶ , R ⁷ and g have the same meaning and the same aspect as those described in the above-mentioned formula (f3). R ^6' , R ^7' and g' respectively have the same meaning and form as R ⁶ , R ⁷ and g described in the above formula (f3). R ^r is preferably the following formula:

In the formula, * represents the bonding position;

Particularly preferred is the following formula:

In the formula, * represents the bonding position.

In the above formula (f5), e is preferably an integer of not less than 1 and not more than 100, particularly preferably not less than 5 and not more than 100. The sum of a, b, c, d, e and f is preferably 5 or more, particularly 10 or more, for example, 10 or more and 100 or less.

In the above formula (f6), f is preferably an integer of not less than 1 and not more than 100, and particularly preferably not less than 5 and not more than 100. The sum of a, b, c, d, e and f is preferably 5 or more, particularly 10 or more, for example, 10 or more and 100 or less.

In one aspect, R ^F is a base represented by the above formula (f1).

In one aspect, R ^F is a base represented by the above formula (f2).

In one aspect, R ^F is a base represented by the above formula (f3) or (f4).

In one aspect, the above-mentioned R ^F is a base represented by the above-mentioned formula (f3).

In one aspect, the above-mentioned R ^F is a base represented by the above-mentioned formula (f4).

In one aspect, R ^F is a base represented by the above formula (f5).

In one aspect, R ^F is a base represented by the above formula (f6).

In R ^F , the ratio of e to f (hereinafter referred to as "e/f ratio") is preferably 0.1 to 10, more preferably 0.2 to 5, more preferably 0.2 to 2, still more preferably 0.2 to 1.5 , the best value is 0.2 to 0.85. By setting the e/f ratio to 10 or less, the smoothness, friction durability, and chemical resistance (for example, durability against artificial sweat) of the surface treatment layer obtained from this compound are further improved. The smaller the e/f ratio, the smoother and frictional durability of the surface treatment layer are improved. On the other hand, by setting the e/f ratio to 0.1 or more, the stability of the compound can be further improved. The larger the e/f ratio, the more stable the compound is.

In one aspect, from the viewpoint of heat resistance, the e/f ratio is preferably 1.0 or more, and more preferably 1.0 to 2.0.

In the above-mentioned silane compound containing a fluorine-containing polyether group, the number average molecular weight of the R ^FA1 and R ^FB2 parts is not particularly limited, but is, for example, 500 to 30,000, preferably 1,500 to 30,000, and particularly preferably 2,000 to 10,000. In this specification, the number average molecular weight of R ^FA1 and R ^FA2 is the value measured by ¹⁹ F-NMR.

In the formulas (A1) and (A2), R ^Si is each independently a monovalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a monovalent group, and at least one R ^Si is a monovalent group containing a hydroxyl group. Or the monovalent group of the Si atom bonded to the hydrolyzable group.

In a preferred embodiment, R ^Si is a monovalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group, and particularly preferably a monovalent group containing a Si atom bonded to a hydrolyzable group.

In a preferred embodiment, R ^Si is a group represented by the following formula (S1), (S2), (S3), (S4) or (S5).

- SiR ¹¹ _n1 R ¹² _3-n1 (S2)

- SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S3)

- CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S4)

- NR ^g1 R ^h1 (S5)

In the above formula, R ¹¹ is each independently a hydroxyl group or a hydrolyzable group.

R ¹¹ is preferably each independently a hydrolyzable group.

R ¹¹ is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted C _1-4 alkyl), especially -OR ^h1 (that is, alkoxy). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl and isobutyl; substituted alkyl groups such as chloromethyl. Among these, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred. In one form, R ^h1 is methyl. In other forms, R ^h1 is ethyl.

In the above formula, R ¹² is each independently a hydrogen atom or a monovalent group. This univalent group is a univalent group excluding the above-mentioned hydrogen atom, hydroxyl group and hydrolyzable group.

The above-mentioned monovalent group is preferably a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In R ¹² , the monovalent group is preferably a C _1-20 alkyl group, particularly preferably a C _1-6 alkyl group, and more preferably a methyl group.

In the above formula, n1 is an integer from 0 to 3 independently in each (SiR ¹¹ _n1 R ¹² _3-n1 ) unit. However, when R ^Si is a base represented by formula (S1) or (S2), the R ^Si portion at the end of formula (A1) and formula (A2) (hereinafter also only referred to as formula (A1) and formula (A1)) In the "terminal part" of (A2)), there is at least one (SiR ¹¹ _n1 R ¹² _3-n1 ) unit in which n1 is 1 to 3. That is, in this terminal part, all n1 will not be 0 at the same time. In other words, at least one Si atom bonded to a hydroxyl group or a hydrolyzable group exists in the terminal portion of formula (A1) and formula (A2).

n1 in each (SiR ¹¹ _n1 R ¹² _3-n1 ) unit is preferably independently an integer of 1 to 3, more preferably 2 or 3, more preferably 3.

In the above formula, X ¹¹ is each independently a single bond or a divalent group. The divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group. The divalent group is preferably a divalent organic group. The divalent organic group is preferably -R ²⁸ -O _x -R ²⁹ - (in the formula, R ²⁸ and R ²⁹ are each independently a single bond or a C _1-20 alkylene group, and x is 0 or 1). The C _1-20 alkylene group can be a straight chain or a branched chain, preferably a straight chain. The C _1-20 alkylene group is preferably a C _1-10 alkylene group, particularly preferably a C _1-6 alkylene group, and more preferably a C _1-3 alkylene group.

In one aspect, X ¹¹ is each independently -C _1-6 alkylene-OC _1-6 alkylene- or -OC _1-6 alkylene-. The right side of X ¹¹ is bonded to Si.

In _a preferred _embodiment ^, A linear C _1-2 alkylene group, more preferably a linear C _1-2 alkylene group.

In the above formula, R ¹³ is each independently a hydrogen atom or a monovalent organic group. The monovalent organic group is preferably a C _1-20 alkyl group. The C _1-20 alkyl group can be a straight chain or a branched chain, preferably a straight chain.

In a preferred embodiment, R ¹³ is independently a hydrogen atom or a linear C _1-6 alkyl group, preferably a hydrogen atom or a linear C _1-3 alkyl group, preferably a hydrogen atom or a methyl group. .

In the above formula, t is each independently an integer of 2 or more.

It is preferable that t is an integer of 2 to 10 independently, and it is especially preferable that it is an integer of 2 to 6.

In the above formula, R ¹⁴ is each independently a hydrogen atom, a halogen atom or -X ¹¹ -SiR ¹¹ _n1 R ¹² _3-n1 . The halogen atom is preferably an iodine atom, a chlorine atom or a fluorine atom, and is particularly preferably a fluorine atom. In a preferred embodiment, R ¹⁴ is a hydrogen atom.

In the above formula, each time R ¹⁵ appears, it is independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms. In the alkyleneoxy group, the alkylene group is bonded to the carbon atom having R ¹³ .

In one aspect, each occurrence of R ¹⁵ is independently an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms.

In a preferred form, R ¹⁵ is a single bond.

In one aspect, formula (S1) is the following formula (S1-a).

In the formula,

R ¹¹ , R ¹² , R ¹³ , X ¹¹ and n1 have the same meaning as in the above formula (S1),

t1 and t2 are each independently an integer above 0, preferably an integer above 1, especially an integer from 1 to 10, more preferably an integer from 2 to 10, for example, an integer from 1 to 5 or an integer from 2 to 5. Integer, the total of t1 and t2 is 2 or more,

The order of existence of the repeating units marked t1 and t2 and enclosed in parentheses is arbitrary in the formula.

In a preferred aspect, formula (S1) is the following formula (S1-b).

In the formula, R ¹¹ , R ¹² , R ¹³ , X ¹¹ , n1 and t have the same meanings as in the above formula (S1).

In the above formula, R ^a1 is each independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 .

Z ¹ are each independently a divalent base. The right side of the structure described below as Z ¹ is bonded to (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ).

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

In a preferred embodiment, Z ¹ is a divalent organic group.

In a preferred embodiment, Z ¹ does not contain a siloxane bond with the Si atom to which Z ¹ is bonded. In formula (S3), (Si-Z ¹ -Si) preferably does not contain siloxane bonds.

The above Z ¹ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1 -O-(CH ₂ ) _z2 -(in the formula, z1 is an integer from 0 to 6, for example, it is an integer from 1 to 6, z2 is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z3 -phenylene-(CH ₂ ) _z4 -(where z3 is an integer from 0 to 6, for example, 1 to 6 an integer, z4 is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from the group consisting of fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ¹ is C _1-6 alkylene group or -(CH ₂ ) _z3 -phenylene group -(CH ₂ ) _z4 -, preferably -phenylene group -(CH ₂ ) _z4 - . When Z ¹ is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ¹ is a C _1-3 alkylene group. In one aspect, Z ¹ can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ¹ can be -CH ₂ CH ₂ -.

R ²¹ is each independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _r1' .

The above-mentioned Z ^1' are each independently a divalent base. The right side of the structure described below with Z ^1' is bonded to (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ).

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

In a preferred embodiment, Z ^1' is a divalent organic group.

In a preferred embodiment, Z ^1' does not contain a siloxane bond with the Si atom to which Z ^1' is bonded. In formula (S3), (Si-Z ^1' -Si) preferably does not contain siloxane bonds.

The above Z ^1' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1' -O-(CH ₂ ) _z2' -(in the formula, z1' is an integer from 0 to 6, for example, 1 to 6 an integer, z2' is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z3' -phenyl-(CH ₂ ) _z4' -(in the formula, z3' is 0 to 6 is an integer, for example, an integer from 1 to 6, z4' is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from the group consisting of fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ^1' is C _1-6 alkylene or -(CH ₂ ) _z3' -phenylene-(CH ₂ ) _z4' -, preferably -phenylene-(CH ₂ ) _z4' -. When Z ^1' is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ^1' is a C _1-3 alkylene group. In one aspect, Z ^1' can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ^1' can be -CH ₂ CH ₂ -.

R ^21' are independently -Z ^1" -SiR ^22" _q1" R ^23" _r1" .

The above-mentioned Z ^1″ are each independently a divalent group. The following is bonded to (SiR ^22″ _q1″ R ^23″ _r1″ ) from the right side of the structure described by Z ^1″ .

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

In a preferred embodiment, Z ^1″ is a divalent organic radical.

In a preferred embodiment, Z ^1″ does not contain a siloxane bond with the Si atom to which Z ^1″ is bonded. In formula (S3), (Si-Z ^1″ -Si) preferably does not contain siloxane bonds.

The above Z ^1” is preferably a C _1-6 alkylene group, -(CH ₂ ) _z1” -O-(CH ₂ ) _z2” - (in the formula, z1” is an integer from 0 to 6, for example, 1 to 6 an integer, z2″ is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z3″ -phenyl-(CH ₂ ) _z4″ -(where z3″ is 0 to 6 is an integer, such as an integer from 1 to 6, z4″ is an integer from 0 to 6, such as an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably straight chain Chain. These groups can be substituted by one or more substituents selected from, for example, fluorine atom, C _1-6 alkyl, C _2-6 alkenyl and C _2-6 alkynyl, preferably Non-replacement.

In a preferred embodiment, Z ^1” is C _1-6 alkylene or -(CH ₂ ) _z3” -phenylene-(CH ₂ ) _z4” -, preferably -phenylene-(CH ₂ ) _z4” -. When Z ^1″ is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ^1″ is a C _1-3 alkylene group. In one embodiment, Z ^1″ can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ^1″ can be -CH ₂ CH ₂ -.

R ^22″ is each independently a hydroxyl group or a hydrolyzable group.

R ^22″ is preferably each independently a hydrolyzable group.

R ^22″ is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted Substituted C _1-4 alkyl), especially -OR ^h1 (i.e. alkoxy). Examples of R ^h1 include: methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, etc. Unsubstituted alkyl; substituted alkyl such as chloromethyl. Among these, alkyl is preferred, especially unsubstituted alkyl, and methyl or ethyl is particularly preferred. In one form, R ^h1 is methyl, in In other forms, R ^h1 is ethyl.

R ^23″ is each independently a hydrogen atom or a monovalent organic group. The monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In one aspect, the monovalent organic group is a C _1-20 alkyl group, preferably a C _1-6 alkyl group, and more preferably a methyl group.

q1″ are each independently an integer from 0 to 3, and the above r1″ are each independently an integer from 0 to 3. The total of q1” and r1” in the unit (SiR ^22” _q1” R ^23” _r1” ) is 3.

The above q1" in each (SiR ^22" _q1" R ^23" _r1" ) unit is preferably independently an integer of 1 to 3, more preferably 2 to 3, more preferably 3.

R ^22' is each independently a hydroxyl group or a hydrolyzable group.

R ^22' is preferably each independently a hydrolyzable group.

R ^22' is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted Substituted C _1-4 alkyl), especially -OR ^h1 (that is, alkoxy). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl and isobutyl; substituted alkyl groups such as chloromethyl. Among these, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred. In one aspect, R ^h1 is methyl, and in the other aspect, R ^h1 is ethyl.

R ^23' is each independently a hydrogen atom or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In one aspect, the monovalent organic group is a C _1-20 alkyl group, preferably a C _1-6 alkyl group, and more preferably a methyl group.

The above-mentioned p1' are each independently an integer from 0 to 3, q1' are each independently an integer from 0 to 3, and r1' are each independently an integer from 0 to 3. The sum of P', q1' and r1' is 3 in each (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit.

In one state, p1’ is 0.

In one form, p1' in each (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit is independently an integer from 1 to 3, and may be an integer from 2 to 3 or 3. In the preferred form, p1' is 3.

In one form, q1' in each (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit is independently an integer from 1 to 3, preferably 2 or 3, especially 3 .

In a state, p1' is 0, and q1' in each (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit is independently an integer from 1 to 3, preferably 2 or 3 , preferably 3.

R ²² is each independently a hydroxyl group or a hydrolyzable group.

R ²² is preferably each independently a hydrolyzable group.

R ^22' is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted Substituted C _1-4 alkyl), especially -OR ^h1 (that is, alkoxy). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl and isobutyl; substituted alkyl groups such as chloromethyl. Among these, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred. In one aspect, R ^h1 is methyl, and in the other aspect, R ^h1 is ethyl.

R ²³ is each independently a hydrogen atom or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In one aspect, the monovalent organic group is a C _1-20 alkyl group, preferably a C _1-6 alkyl group, and more preferably a methyl group.

The above-mentioned p1 are each independently an integer from 0 to 3, q1 are each independently an integer from 0 to 3, and r are each independently an integer from 0 to 3. The total of p1, q1 and r1 is 3 in the (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit.

In one state, p1 is 0.

In one state, p1 is independently an integer from 1 to 3, an integer from 2 to 3, or 3 in each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit. In the preferred configuration, p1 is 3.

In one aspect, q1 in each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit is independently an integer from 1 to 3, preferably 2 or 3, particularly preferably 3.

In one state, p1 is 0, and q1 in each (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) unit is independently an integer from 1 to 3, preferably 2 or 3, more preferably 3.

In the above formula, R ^b1 is each independently a hydroxyl group or a hydrolyzable group.

R ^b1 is preferably each independently a hydrolyzable group.

R ^b1 is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted C _1-4 alkyl), especially -OR ^h1 (that is, alkoxy). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl and isobutyl; substituted alkyl groups such as chloromethyl. Among these, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred. In one aspect, R ^h1 is methyl, and in the other aspect, R ^h1 is ethyl.

In the above formula, R ^c1 is each independently a hydrogen atom or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In one aspect, the monovalent organic group is a C _1-20 alkyl group, preferably a C _1-6 alkyl group, and more preferably a methyl group.

The above k1 are each independently an integer from 0 to 3, l1 is each independently an integer from 0 to 3, and m1 is each independently an integer from 0 to 3. The sum of k1, l1 and m1 is 3 in each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit.

In a state, k1 in each (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit is independently an integer from 1 to 3, preferably 2 or 3, particularly preferably 3. In the preferred configuration, k1 is 3.

In formulas (A1) and (A2), when R ^Si is a group represented by formula (S3), it is preferable that at least 2 are present in the terminal portion of formula (A1) and formula (A2). A Si atom bonded to a hydroxyl group or a hydrolyzable group.

In a preferred aspect, the base represented by formula (S3) has -Z ¹ -SiR ²² _q1 R ²³ _r1 (in the formula, q1 is an integer from 1 to 3, preferably 2 or 3, particularly preferably 3, r1 is an integer from 0 to 2), -Z ^1' -SiR ^22' _q1' R ^23' _r1' (wherein, q1' is an integer from 1 to 3, preferably 2 or 3, especially 3 , r1' is an integer from 0 to 2) or -Z ^1” -SiR ^22” _q1” R ^23” _r1” (wherein, q1” is an integer from 1 to 3, preferably 2 or 3, especially 3 , r1″ is any one of the integers from 0 to 2). ^{Z 1} , Z ^1′ , Z ^1″ , R ²² , R ²³ , R ^22′ , R ^23′ , R ^22″ , and R ^23″ are the same as the above have the same meaning.

In a preferred aspect, when R ^21' is present in formula (S3), q1" is an integer from 1 to 3, preferably 2, in at least one, preferably all, R ^21' Or 3, preferably 3.

In a preferred aspect, when R ²¹ exists in formula (S3), p1' is 0, and q1' is an integer from 1 to 3 in at least one, preferably all, R ²¹ , preferably The best is 2 or 3, especially 3.

In a preferred aspect, when there is R ^a1 in the formula (S3), p1 is 0, and q1 is an integer from 1 to 3 in at least one, preferably all, R ^a1 , preferably 2 or 3, preferably 3.

In a preferred aspect, in formula (S3), k1 is 2 or 3, preferably 3, p1 is 0, and q1 is 2 or 3, preferably 3.

In one aspect, formula (S3) contains no siloxane bonds.

R ^d1 are each independently -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 .

Z ² is independently a single bond or a divalent base. The right side of the structure described in Z ² below is bonded to (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ).

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

It is preferable that ^Z2 is independently an oxygen atom or a divalent organic group, and it is particularly preferable that it is a divalent organic group.

The above Z ² is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5 -O-(CH ₂ ) _z6 -(in the formula, z5 is an integer from 0 to 6, for example, it is an integer from 1 to 6, z6 is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z7 -phenylene-(CH ₂ ) _z8 -(where z7 is an integer from 0 to 6, for example, 1 to 6 an integer, z8 is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from the group consisting of fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ² is C _1-6 alkylene group or -(CH ₂ ) _z7 -phenylene group -(CH ₂ ) _z8 -, preferably -phenylene group -(CH ₂ ) _z8 - . When Z ² is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ² is a C _1-3 alkylene group. In one aspect, Z ² can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ² can be -CH ₂ CH ₂ -.

R ³¹ is each independently -Z ^2' -CR ^32' _q2' R ^33' _r2 .

Z ^2' is independently a single bond or a divalent base. The right side of the structure described below Z ^2' is bonded to (CR ^32' _q2' R ^33' _r2' ).

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

Z ^2' is preferably each independently an oxygen atom or a divalent organic group, particularly preferably a divalent organic group.

The above Z ^2' is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5' -O-(CH ₂ ) _z6' -(in the formula, z5' is an integer from 0 to 6, for example, 1 to 6 an integer, z6' is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z7' -phenyl-(CH ₂ ) _z8' -(where z7' is 0 to 6 is an integer, for example, an integer from 1 to 6, z8' is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from the group consisting of fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ^2' is C _1-6 alkylene or -(CH ₂ ) _z7' -phenylene-(CH ₂ ) _z8' -, preferably -phenylene-(CH ₂ ) _z8' -. When Z ^2' is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ^2' is a C _1-3 alkylene group. In one aspect, Z ^2' can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ^2' can be -CH ₂ CH ₂ -.

R ^32' is each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 .

The above Z ³ are each independently a single bond or a divalent group. The right side of the structure described below as ^Z3 is bonded to (SiR ³⁴ _n2 R ³⁵ _3-n2 ).

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

Preferably, Z ³ is each independently an oxygen atom or a divalent organic group, particularly preferably a divalent organic group.

In one state, Z ³ is an oxygen atom.

In one form, Z ³ is a divalent organic group.

The above Z ³ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5” -O-(CH ₂ ) _z6” - (in the formula, z5” is an integer from 0 to 6, for example, from 1 to 6 Integer, z6" is an integer from 0 to 6, for example, an integer from 1 to 6) or -(CH ₂ ) _z7" -phenyl-(CH ₂ ) _z8" - (in the formula, z7" is an integer from 0 to 6 An integer, for example, an integer from 1 to 6, z8″ is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from the group consisting of fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ³ is C _1-6 alkylene or -(CH ₂ ) _z7” -phenylene-(CH ₂ ) _z8” -, preferably -phenylene-(CH ₂ ) _z8” -. When Z ³ is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ³ is a C _1-3 alkylene group. In one aspect, Z ³ can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ³ can be -CH ₂ CH ₂ -.

R ³⁴ is each independently a hydroxyl group or a hydrolyzable group.

R ³⁴ is preferably each independently a hydrolyzable group.

R ³⁴ is preferably independently -OR ^h1 , -OCOR ^h1 , -ON=CR ^h1 ₂ , -NR ^h1 ₂ , -NHR ^h1 , -NCO or halogen (in this equation, R ^h1 represents substituted or unsubstituted C _1-4 alkyl), especially -OR ^h1 (that is, alkoxy). Examples of R ^h1 include: unsubstituted alkyl groups such as methyl, ethyl, propyl, isopropyl, n-butyl and isobutyl; substituted alkyl groups such as chloromethyl. Among these, an alkyl group is preferred, particularly an unsubstituted alkyl group, and a methyl or ethyl group is particularly preferred. In one aspect, R ^h1 is methyl, and in the other aspect, R ^h1 is ethyl.

R ³⁵ is each independently a hydrogen atom or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In R ³⁵ , the monovalent organic group is preferably a C _1-20 alkyl group, especially a C _1-6 alkyl group, and more preferably a methyl group.

In the above formula, n2 in each (SiR ³⁴ _n2 R ³⁵ _3-n2 ) unit is independently an integer from 0 to 3. However, when R ^Si is a base represented by formula (S4), there is at least one n2 of 1 to 3 in the terminal part of formula (A1) and formula (A2) (SiR ³⁴ _n2 R ³⁵ _3-n2 ) unit. That is, in this terminal part, all n2 will not be 0 at the same time. In other words, at least one Si atom bonded to a hydroxyl group or a hydrolyzable group exists in the terminal portion of formula (A1) and formula (A2).

n2 in each (SiR ³⁴ _n2 R ³⁵ _3-n2 ) unit is preferably independently an integer of 1 to 3, more preferably 2 or 3, more preferably 3.

R ^33' is each independently a hydrogen atom, a hydroxyl group or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In R ^33' , the univalent organic group can preferably be a C _1-20 alkyl group or R ^41' -(OR ^42' ) _y1' -O _y2' -(in the formula, R ^41' is a hydrogen atom or C _1-6 alkyl group, R ^42' is each independently a C _1-6 alkyl group, y1' is an integer from 1 to 30, y2' is a group represented by 0 or 1).

In one state, R ^41' is a hydrogen atom.

In other aspects, R ^41' is C _1-6 alkyl, preferably C _1-3 alkyl.

R ^42' is each independently a C _1-6 alkylene group, preferably a C _1-3 alkylene group, especially a C _2-3 alkylene group.

y1' is an integer from 1 to 30, preferably an integer from 1 to 20, especially an integer from 1 to 10, and more preferably an integer from 2 to 10, such as an integer from 2 to 6, or an integer from 2 to 4. , an integer from 3 to 6 or an integer from 4 to 6.

In one form, R ^33' is hydroxyl.

In other aspects, R ^33' is a C _1-20 alkyl group, especially a C _1-6 alkyl group.

In other forms, R ^33' is R ^41' -(OR ^42' ) _y1' -O _y2' -.

The above q2' are each independently an integer from 0 to 3, and the above r2' are each independently an integer from 0 to 3. The sum of q2' and r2' is 3 in each (CR ^32' _q2' R ^33' _r2' ) unit.

q2' in each (CR ^32' _q2' R ^33' _r2' ) unit is preferably independently an integer of 1 to 3, more preferably 2 or 3, more preferably 3.

R ³² is each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 . -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 has the same meaning as described in the above-mentioned R ^32' .

R ³³ is each independently a hydrogen atom, a hydroxyl group or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In R ³³ , the monovalent organic group is preferably a C _1-20 alkyl group or R ⁴¹ -(OR ⁴² ) _y1 -O _y2 -(in the formula, R ⁴¹ is a hydrogen atom or a C _1-6 alkyl group, R ⁴² is each independently a C _1-6 alkylene group, y1 is an integer from 1 to 30, and y2 is a group represented by 0 or 1).

In one state, R ⁴¹ is a hydrogen atom.

In other aspects, R ⁴¹ is C _1-6 alkyl, preferably C _1-3 alkyl.

R ⁴² is each independently a C _1-6 alkylene group, preferably a C _1-3 alkylene group, and particularly preferably a C _2-3 alkylene group.

y1 is an integer from 1 to 30, preferably an integer from 1 to 20, especially an integer from 1 to 10, and more preferably an integer from 2 to 10, such as an integer from 2 to 6, an integer from 2 to 4, An integer from 3 to 6 or an integer from 4 to 6.

In one form, R ³³ is hydroxyl.

In other aspects, R ³³ is a C _1-20 alkyl group, especially a C _1-6 alkyl group.

In other forms, R ³³ is R ⁴¹ -(OR ⁴² ) _y1 -O _y2 -.

The above-mentioned p2 is each independently an integer from 0 to 3, q2 is each independently an integer from 0 to 3, and r2 is each independently an integer from 0 to 3. The total of p2, q2 and r2 is 3 in the unit (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ).

In one state, p2 is 0.

In one aspect, p2 can be independently an integer from 1 to 3, an integer from 2 to 3, or 3 in each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit. In the preferred configuration, p2 is 3.

In one form, q2 in each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit is independently an integer from 1 to 3, preferably 2 or 3, particularly preferably 3.

In a state, p2 is 0, and q2 in each (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) unit is independently an integer from 1 to 3, preferably 2 or 3, more preferably 3.

R ^e1 is each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 . -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 has the same meaning as described in the above-mentioned R ^32' .

R ^f1 is each independently a hydrogen atom, a hydroxyl group or a monovalent organic group. This monovalent organic group is a monovalent organic group excluding the above-mentioned hydrolyzable group.

In R ^f1 , the univalent organic group is preferably a C _1-20 alkyl group or R ⁴³ -(OR ⁴⁴ ) _y3 -O _y4 -(in the formula, R ⁴³ is a hydrogen atom or a C _1-6 alkyl group, R ⁴⁴ is each independently a C _1-6 alkylene group, y3 is an integer from 1 to 30, and y4 is a group represented by 0 or 1).

In one state, R ⁴³ is a hydrogen atom.

In other aspects, R ⁴³ is C _1-6 alkyl, preferably C _1-3 alkyl.

R ⁴⁴ is each independently a C _1-6 alkylene group, preferably a C _1-3 alkylene group, especially a C _2-3 alkylene group.

y3 is an integer from 1 to 30, preferably an integer from 1 to 20, especially an integer from 1 to 10, and more preferably an integer from 2 to 10, such as an integer from 2 to 6, an integer from 2 to 4, An integer from 3 to 6 or an integer from 4 to 6.

In one form, R ^f1 is hydroxyl.

In other aspects, R ^f1 is a C _1-20 alkyl group, especially a C _1-6 alkyl group.

In other aspects, R ^f1 is R ⁴³ -(OR ⁴⁴ ) _y3 -O _y4 -.

The above k2 is an integer from 0 to 3 independently, l2 is an integer from 0 to 3 independently, and m2 is an integer from 0 to 3 independently. The sum of k2, l2 and m2 is 3 in each (CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ) unit.

In formulas (A1) and (A2), when R ^Si is a group represented by formula (S4), it is preferable that at least 2 are present in the terminal portion of formula (A1) and formula (A2). A Si atom bonded to a hydroxyl group or a hydrolyzable group.

In one state, when R ^Si is a base represented by formula (S4), n2 is 1 to 3, preferably 2 or 3, particularly preferably 3 (SiR ³⁴ _n2 R ³⁵ _3-n2 ) There are more than 2 units in each terminal part of formula (A1) and formula (A2), for example, 2 to 27 units, preferably 2 to 9 units, particularly preferably 2 to 6 units, more preferably 2 to 3, preferably 3.

In a preferred aspect, when R ^32' is present in formula (S4), n2 is an integer from 1 to 3, preferably 2 or more, in at least one, preferably all, R ^32'. 3, preferably 3.

In a preferred aspect, when R ³² is present in formula (S4), n2 is an integer from 1 to 3, preferably 2 or 3, in at least one, preferably all, R ³² . The best number is 3.

In a preferred aspect, when there is R ^e1 in formula (S4), n2 is an integer from 1 to 3, preferably 2 or 3, in at least one, preferably all, R ^a1 . The best number is 3.

In a preferred aspect, in formula (S4), k2 is 0, l2 is 2 or 3, preferably 3, and n2 is 2 or 3, preferably 3.

In one aspect, formula (S4) contains no siloxane bonds.

R ^g1 and R ^h1 are independently -Z ⁴ -SiR ¹¹ _n1 R ¹² _3-n1 , -Z ⁴ -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 , and -Z ⁴ -CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 . Here, R ¹¹ , R ¹² , R ^a1 , R ^b2 , R ^c1 , R ^d1 , R ^e1 , R ^f1 , n1, k1, l1, m1, k2, l2 and m2 have the same meanings as above.

In a preferred embodiment, R ^g1 and R ^h1 are independently -Z ⁴ -SiR ¹¹ _n1 R ¹² _3-n1 .

The above-mentioned Z ⁴ are each independently a single bond or a divalent group. (SiR ¹¹ _n1 R ¹² _3-n1 ) is bonded to the right side of the structure described in Z ⁴ below.

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, and particularly preferably an oxygen atom or a divalent organic group.

It is preferable that ^Z4 is independently an oxygen atom or a divalent organic group, and it is particularly preferable that it is a divalent organic group.

In one state, Z ⁴ is an oxygen atom.

In one form, Z ⁴ is a divalent organic radical.

The above Z ⁴ is preferably a C _1-6 alkylene group, -(CH ₂ ) _z5” -O-(CH ₂ ) _z6” - (in the formula, z5” is an integer from 0 to 6, for example, from 1 to 6 Integer, z6” is an integer from 0 to 6, for example, it is an integer from 1 to 6) or -(CH ₂ ) _z7” -phenyl-(CH ₂ ) _z8” - (in the formula, z7” is an integer from 0 to 6 An integer, for example, an integer from 1 to 6, z8″ is an integer from 0 to 6, for example, an integer from 1 to 6). The C _1-6 alkylene group can be a straight chain or a branched chain, preferably a straight chain. These groups may be substituted by one or more substituents selected from, for example, fluorine atom, C _1-6 alkyl group, C _2-6 alkenyl group and C _2-6 alkynyl group, preferably unsubstituted .

In a preferred embodiment, Z ⁴ is C _1-6 alkylene or -(CH ₂ ) _z7” -phenylene-(CH ₂ ) _z8” -, preferably -phenylene-(CH ₂ ) _z8” -. When Z ⁴ is the base, the light resistance, especially the ultraviolet resistance, can be further improved.

In other preferred embodiments, the above-mentioned Z ⁴ is a C _1-3 alkylene group. In one aspect, Z ⁴ can be -CH ₂ CH ₂ CH ₂ -. In other aspects, Z ⁴ can be -CH ₂ CH ₂ -.

In one aspect, R ^Si is a radical represented by formula (S2), (S3), (S4) or (S5). These compounds can form surface treatment layers with high surface smoothness.

In one aspect, R ^Si is a group represented by formula (S1), (S3), (S4) or (S5). Since these compounds have a plurality of hydrolyzable groups at one end, they can adhere strongly to the substrate and form a surface treatment layer with high friction durability.

In one aspect, R ^Si is a radical represented by formula (S1), (S3) or (S4). Since these compounds have a plurality of hydrolyzable groups at one end, they can adhere strongly to the substrate and form a surface treatment layer with high friction durability.

In one aspect, R ^Si is a base represented by formula (S3) or (S4). Since these compounds can have a plurality of hydrolyzable groups branched from one Si atom or C atom at one end, they can form a surface treatment layer with higher friction durability.

In one aspect, R ^Si is a base represented by formula (S1).

In one form, R ^Si is a base represented by formula (S2).

In one form, R ^Si is a base represented by formula (S3).

In one form, R ^Si is a base represented by formula (S4).

In one form, R ^Si is a base represented by formula (S5).

In formula (A1), α1 is an integer from 1 to 9, and β1 is an integer from 1 to 9. These α1 and β1 can change according to the valence of X ^A. The sum of α1 and β1 is the same as the valence of X ^A. For example, when X ^A is a 10-valent base, the sum of α1 and β1 is 10. For example, α1 can be 9 and β1 can be 1, α1 can be 5 and β1 can be 5, or α1 can be 1 and β1 can be 9. In addition, when X ^A is a divalent base, α1 and β1 are 1.

In formula (A2), γ1 is an integer from 1 to 9. γ1 can change according to the valence of X ^A. In other words, γ1 is the value obtained by subtracting 1 from the valence of X ^A.

In formulas ( ^{A1 )} and ( ^A2 ), (R ^Si ) A linking group for connection. Therefore, X ^A may be a single bond or any group as long as the compounds represented by formulas (A1) and (A2) can exist stably.

X ^A are each independently a single bond or a valence base of 2 to 10.

Preferably, X ^A is independently a single bond or an organic group with 2 to 10 valence.

In one state, X ^A contains no siloxane bonds (-Si-O-Si-).

The valence base of 2 to 10 in the above-mentioned X ^A is preferably a valence base of 2 to 8. In one aspect, the 2- to 10-valent base is preferably a 2- to 4-valent base, and particularly preferably a 2-valent base. In other forms, the 2-10 valency base is preferably a 3-8 valency base, particularly preferably a 3-6 valency base.

In one state, X ^A is a single bond or a divalent group, α1 is 1, and β1 is 1.

In one state, X ^A is a single bond or a divalent base, and γ1 is 1.

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, more preferably an oxygen atom or a divalent organic group, and more preferably a divalent organic group.

In one form, X ^A is a 3- to 6-valent group, preferably a 3 to 6-valent organic group, α1 is 1, and β1 is 2 to 5.

In one form, X ^A is a 3- to 6-valent radical, preferably a 3- to 6-valent organic radical, and γ1 is from 2 to 5.

In one form, X ^A is a trivalent radical, preferably a trivalent organic radical, α1 is 1, and β1 is 2.

In one form, X ^A is a trivalent radical, preferably a trivalent organic radical, and γ1 is 2.

When X ^A is a single bond or a divalent group, formulas (A1) and (A2) are represented by the following formulas (A1') and (A2').

R ^F1 -X ^A -R ^Si (A1')

R ^Si -X ^A -R ^F2 -X ^A -R ^Si (A2')

In one state, X ^A is a single bond.

In other aspects, X ^A is a divalent organic group.

In one form, X ^A can include, for example, a single bond or a divalent organic group represented by the following formula:

-(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 -

In the formula:

R ⁵¹ represents a single bond, -(CH ₂ ) _s5 - or o-, m- or p-phenylene group, preferably -(CH ₂ ) _s5 -,

s5 is an integer from 1 to 20, preferably an integer from 1 to 6, particularly preferably an integer from 1 to 3, and more preferably 1 or 2,

X ⁵¹ means -(X ⁵² ) _l5 -,

^{Each of} _{_} ^_ ₂ O) _m5 -Si(R ⁵³ ) ₂ -, -CONR ⁵⁴ -, -O-CONR ⁵⁴ -, -NR ⁵⁴ - and -(CH ₂ ) _n5 -, the group consisting of,

R ⁵³ independently represents phenyl, C _1-6 alkyl or C _1-6 alkoxy, preferably phenyl or C _1-6 alkyl, especially methyl,

R ⁵⁴ each independently represents a hydrogen atom, phenyl or C _1-6 alkyl group (preferably methyl),

Each time m5 appears, it is independently an integer from 1 to 100, preferably an integer from 1 to 20.

Each occurrence of n5 is independently an integer from 1 to 20, preferably an integer from 1 to 6, particularly preferably an integer from 1 to 3,

l5 is an integer from 1 to 10, preferably an integer from 1 to 5, particularly preferably an integer from 1 to 3,

p5 is 0 or 1,

q5 is 0 or 1,

Here, at least one of p5 and q5 is 1, and the order of existence of the repeating units marked with p5 or q5 and enclosed in parentheses is arbitrary,

The right side is bonded to R ^Si .

Here, X ^A (typically the hydrogen atom of X ^A ) may be substituted by one or more substituents selected from a fluorine atom, a C _1-3 alkyl group and a C _1-3 fluoroalkyl group. . In a preferred form, X ^A is unsubstituted by these groups.

In a preferred aspect, the above-mentioned X ^A are independently -(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 -R ⁵² -. R ⁵² represents a single bond, -(CH ₂ ) _t5 - or o-, m- or p-phenylene group, preferably -(CH ₂ ) _t5 -. t5 is an integer from 1 to 20, preferably an integer from 2 to 6, particularly preferably an integer from 2 to 3. Here, R ⁵² (typically the hydrogen atom of R ⁵² ) may be substituted by one or more substituents selected from a fluorine atom, a C _1-3 alkyl group and a C _1-3 fluoroalkyl group. . In a preferred form, R ⁵⁶ is unsubstituted by these groups.

The above X ^A can preferably be independently:

single key,

C _1-20 alkylene group,

-R ⁵¹ -X ⁵³ -R ⁵² -, or

-X ⁵⁴ -R ⁵ -

In the formula, R ⁵¹ and R ⁵² have the same meaning as above;

X ⁵³ means:

-O-、

-S-、

-C(O)O-、

-CONR ⁵⁴ -,

-O-CONR ⁵⁴ -,

-Si(R ⁵³ ) ₂ -,

-(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -Si(R ⁵³ ) ₂ -O-Si(R ⁵³ ) ₂ -CH ₂ CH ₂ -Si(R ⁵³ ) ₂ -O-Si(R ⁵³ ) ₂ -,

-O-(CH ₂ ) _u5 -Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -N(R ⁵⁴ )-, or

-CONR ⁵⁴ -(o-, m- or p-phenyl)-Si(R ⁵³ ) ₂ -

In the formula, R ⁵³ , R ⁵⁴ and m5 have the same meaning as above, u5 is an integer from 1 to 20, preferably an integer from 2 to 6, especially preferably an integer from 2 to 3;

X ⁵⁴ means:

-S-、

-C(O)O-、

-CONR ⁵⁴ -,

-O-CONR ⁵⁴ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -(Si(R ⁵⁴ ) ₂ O) _m5 -Si(R ⁵⁴ ) ₂ -,

-CONR ⁵⁴ -(CH ₂ ) _u5 -N(R ⁵⁴ )-, or

-CONR ⁵⁴ -(o-, m- or p-phenyl)-Si(R ⁵⁴ ) ₂ -

In the formula, each symbol has the same meaning as above.

The above-mentioned X ^A preferred series are independently:

single key,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -、

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -,

-X ⁵⁴ -, or

-X ⁵⁴ -(CH ₂ ) _t5 -

In the formula, X ⁵³ , X ⁵⁴ , s5 and t5 have the same meanings as above.

The above X ^A can preferably be independently:

single key,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -, or

-X ⁵⁴ -(CH ₂ ) _t5 -

In the formula, each symbol has the same meaning as above.

In a preferred embodiment, the above X ^A can be independently:

single key,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -X ⁵³ -, or

-(CH ₂ ) _s5 -X ⁵³ -(CH ₂ ) _t5 -

In the formula,

X ⁵³ is -O-, -CONR ⁵⁴ - or -O-CONR ⁵⁴ -,

R ⁵⁴ each independently represents a hydrogen atom, a phenyl group or a C _1-6 alkyl group,

s5 is an integer from 1 to 20,

t5 is an integer from 1 to 20.

In a preferred embodiment, the above X ^A can be independently:

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -

-CONR ⁵⁴ -(CH ₂ ) _t5 -

In the formula,

R ⁵⁴ each independently represents a hydrogen atom, phenyl group or C _1-6 alkyl group,

s5 is an integer from 1 to 20,

t5 is an integer from 1 to 20.

In a state, the above X ^A are independently:

single key,

C _1-20 alkylene group,

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -,

-(CH ₂ ) _s5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _t5 -,

-(CH ₂ ) _s5 -O-(CH ₂ ) _u5 -(Si(R ⁵³ ) ₂ O) _m5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _t5 -, or

-(CH ₂ ) _s5 -O-(CH ₂ ) _t5 -Si(R ⁵³ ) ₂ -(CH ₂ ) _u5 -Si(R ⁵³ ) ₂ -(C _v H _2v )-

In the formula, R ⁵³ , m5, s5, t5 and u5 have the same meaning as above, and v5 is an integer from 1 to 20, preferably an integer from 2 to 6, particularly preferably an integer from 2 to 3.

In the above formula, -(C _v H _2v )- can be a straight chain or a branched chain, for example, it can be -CH ₂ CH ₂ -, -CH ₂ CH ₂ CH ₂ -, -CH(CH ₃ )-, -CH (CH ₃ )CH ₂ -.

^The _{above - mentioned} replaced by base. In one state, X ^A is unsubstituted.

In one form, X ^A can each independently be other than -OC _1-6 alkylene group.

In other aspects, X ^A may include, for example, the following groups:

In the formula, R ⁴¹ is independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms or a C _1-6 alkoxy group, preferably a methyl group,

D is a basis selected from the following formulas:

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(Ph)-(CH ₂ ) ₃ -(where Ph means phenyl), and

In the formula, R ⁴² independently represents a hydrogen atom, a C _1-6 alkyl group or a C _1-6 alkoxy group, preferably a methyl group or a methoxy group, especially a methyl group;

E is -(CH ₂ ) _n -(n is an integer from 2 to 6),

D is R ^FA1 or R ^FA2 bonded to the main chain of the molecule, and E is bonded to R ^Si .

Specific examples of the above-mentioned X ^A include, for example:

single key,

-CH ₂ OCH ₂ -,

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CH ₂ O(CH ₂ ) ₄ -,

-CH ₂ O(CH ₂ ) ₅ -,

-CH ₂ O(CH ₂ ) ₆ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF (CF ₃ )CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF (CF ₃ )CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CF ₂ CF ₂ OCF (CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ -,

-CH ₂ OCH ₂ CHFCF ₂ OCF(CF ₃ )CF ₂ OCF ₂ CF ₂ CF ₂ -,

-CH ₂ OCF ₂ CHFOCF ₂ CF ₂ CF ₂ -C(O)NH-CH ₂ -,

-CH ₂ OCH ₂ (CH ₂ ) ₇ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₃ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₃ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₃ ) ₂ OSi(OCH ₃ ) ₂ (CH ₂ ) ₂ -,

-CH ₂ OCH ₂ CH ₂ CH ₂ Si(OCH ₂ CH ₃ ) ₂ OSi(OCH ₂ CH ₃ ) ₂ (CH ₂ ) ₂ -,

-(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -,

-CH ₂ -,

-(CH ₂ ) ₂ -,

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-(CH ₂ ) ₅ -,

-(CH ₂ ) ₆ -,

-CO-、

-CONH-、

-CONH-CH ₂ -,

-CONH-(CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₅ -,

-CONH-(CH ₂ ) ₆ -,

-CON(CH ₃ )-CH ₂ -,

-CON(CH ₃ )-(CH ₂ ) ₂ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₄ -,

-CON(CH ₃ )-(CH ₂ ) ₅ -,

-CON(CH ₃ )-(CH ₂ ) ₆ -,

-CON(Ph)-CH ₂ -(where Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₂ -(where Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₃ -(where Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₄ -(where Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₅ -(where Ph means phenyl),

-CON(Ph)-(CH ₂ ) ₆ -(where Ph means phenyl),

-CONH-(CH ₂ ) ₂ NH(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₆ NH(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₃ -,

-CH ₂ O-CONH-(CH ₂ ) ₆ -,

-S-(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ S(CH ₂ ) ₃ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ OSi(CH ₃ ) ₂ OSi(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₃ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₁₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-CONH-(CH ₂ ) ₃ Si(CH ₃ ) ₂ O(Si(CH ₃ ) ₂ O) ₂₀ Si(CH ₃ ) ₂ (CH ₂ ) ₂ -,

-C(O)O-(CH ₂ ) ₃ -,

-C(O)O-(CH ₂ ) ₆ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -(CH ₂ ) ₃ -,

-CH ₂ -O-(CH ₂ ) ₃ -Si(CH ₃ ) ₂ -(CH ₂ ) ₂ -Si(CH ₃ ) ₂ -CH(CH ₃ )-CH ₂ -,

-OCH ₂ -,

-O(CH ₂ ) ₃ -,

-OCFHCF ₂ -, and

wait.

In other aspects, X ^A are each independently a base represented by the formula: -(R ¹⁶ ) _x1 -(CFR ¹⁷ ) _y1 -(CH ₂ ) _z1 -. In the formula, x1, y1 and z1 are each independently an integer from 0 to 10, and the sum of x1, y1 and z1 is more than 1. The order of existence of the repeating units enclosed in brackets is arbitrary in the formula.

In the above formula, R ¹⁶ is independently an oxygen atom, a phenyl group, a carbazolyl group (Carbazolylene), -NR ¹⁸ - (in the formula, R ¹⁸ represents a hydrogen atom or an organic group) or a divalent organic group. R ¹⁸ is preferably an oxygen atom or a divalent polar group.

The above "divalent polar group" is not particularly limited, and examples thereof include -C(O)-, -C(=NR ¹⁹ )- and -C(O)NR ¹⁹ - (in this equation, R ¹⁹ represents a hydrogen atom or lower alkyl). The "lower alkyl group" is, for example, an alkyl group having 1 to 6 carbon atoms, such as methyl, ethyl, n-propyl, which may be substituted by one or more fluorine atoms.

In the above formula, R ¹⁷ is each independently a hydrogen atom, a fluorine atom or a lower fluoroalkyl group, preferably a fluorine atom. The "lower fluoroalkyl group" is, for example, a fluoroalkyl group having 1 to 6 carbon atoms, preferably a fluoroalkyl group having 1 to 3 carbon atoms, preferably a perfluoroalkyl group having 1 to 3 carbon atoms, especially trifluoromethyl, Pentafluoroethyl, more preferably trifluoromethyl.

The left side of each of the above X ^A formulas is bonded to R ^FA1 or R ^FA2 , and the right side is bonded to R ^Si .

In other aspects, examples of X ^A include the following radicals:

In the formula,

R ⁴¹ is independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms or a C _1-6 alkoxy group, preferably a methyl group,

In each X ^A group, any number of T is the following group of R ^FA1 or R ^FA2 bonded to the main chain of the molecule:

-CH ₂ O(CH ₂ ) ₂ -,

-CH ₂ O(CH ₂ ) ₃ -,

-CF ₂ O(CH ₂ ) ₃ -,

-(CH ₂ ) ₂ -、

-(CH ₂ ) ₃ -,

-(CH ₂ ) ₄ -,

-CONH-(CH ₂ ) ₃ -,

-CON(CH ₃ )-(CH ₂ ) ₃ -,

-CON(Ph)-(CH ₂ ) ₃ -(where Ph means phenyl), or

In the formula, R ⁴² independently represents a hydrogen atom, a C _1-6 alkyl group or a C _1-6 alkoxy group, preferably a methyl group or a methoxy group, especially a methyl group;

In the case where several other T's are bonded to R ^Si in the main chain of the molecule, the remaining T's are independently methyl, phenyl, C _1-6 alkoxy, free radical trapping groups or ultraviolet rays Absorbent base.

The radical trapping group is not particularly limited as long as it can trap free radicals generated by light irradiation. Examples thereof include benzophenones, benzotriazoles, benzyl esters, and salicyl benzene. Residual groups of esters, crotonic acids, malonates, organic acrylates, hindered amines, hindered phenols or triazines.

酮(Benzoxazinone)類、苯并

唑(Benzoxazole)類的殘餘基。 The ultraviolet absorbing group is not particularly limited as long as it can absorb ultraviolet rays, and examples thereof include benzotriazoles, hydroxydiphenylketones, esters of substituted and unsubstituted benzyl acid or salicylic acid compounds, acrylates, and cinnamon. Acid alkoxyesters, oxamides, oxanilides, benzo

Ketones (Benzoxazinone), benzo

Residual groups of Benzoxazoles.

In a preferred embodiment, preferred free radical trapping groups or ultraviolet absorbing groups include the following structural formulas.

In this aspect, X ^A can independently range from 3 to 10 valence bases.

In other aspects, examples of X ^A include the following radicals:

In the formula, R ²⁵ , R ²⁶ and R ²⁷ are independently 2 to 6 valent organic groups,

R ²⁵ is bonded to at least one R ^FA1 or R ^FA2 , and R ²⁶ and R ²⁷ are each bonded to at least one R ^Si .

In one form, R ²⁵ is a single bond, C _1-20 alkylene group, C _3-20 cycloalkylene group, C _5-20 aryl group, -R ⁵⁷ -X ⁵⁸ -R ⁵⁹ -, -X ⁵⁸ -R ⁵⁹ - or -R ⁵⁷ -X ⁵⁸ -. The above-mentioned R ⁵⁷ and R ⁵⁹ are each independently a single bond, a C _1-20 alkylene group, a C _3-20 cycloalkylene group or a C _5-20 aryl group. The above X ⁵⁸ is -O-, -S-, -CO-, -O-CO- or -COO-.

In one aspect, R ²⁶ and R ²⁷ are each independently a hydrocarbon, or a group having at least 1 atom selected from N, O and S in the terminal or main chain of the hydrocarbon, preferably C _{1- 6} alkyl, -R ³⁶ -R ³⁷ -R ³⁶ -, -R ³⁶ -CHR ³⁸ ₂ -, etc. Here, R ³⁶ is each independently a single bond or an alkyl group having 1 to 6 carbon atoms, preferably an alkyl group having 1 to 6 carbon atoms. R ³⁷ is N, O or S, preferably N or O. R ³⁸ is -R ⁴⁵ -R ⁴⁶ -R ⁴⁵ -, -R ⁴⁶ -R ⁴⁵ - or -R ⁴⁵ -R ⁴⁶ -. Here, R ⁴⁵ is each independently an alkyl group having 1 to 6 carbon atoms. R ⁴⁶ is N, O or S, preferably O.

In this aspect, X ^A can independently range from 3 to 10 valence bases.

In another aspect, X ^A is a radical represented by:

In the formula, X ^a is a single bond or a divalent organic group.

The above-mentioned X ^a is a single bond or a divalent linking group directly bonded to the isocyanuric acid ring. X ^a is preferably a divalent group containing a single bond, an alkylene group, or at least one bond selected from the group consisting of an ether bond, an ester bond, an amide bond and a sulfide bond, and particularly preferably bond, an alkylene group having 1 to 10 carbon atoms, or a divalent hydrocarbon group having 1 to 10 carbon atoms that is at least one bond selected from the group consisting of an ether bond, an ester bond, an amide bond, and a sulfide bond.

X ^a is more preferably a base represented by the following formula:

-(CX ¹²¹ X ¹²² ) _x1 -(X ^a1 ) _y1 -(CX ¹²³ X ¹²⁴ ) _z1 -

In _the ^{formula ,} X ^{121 to}

The above X ^a1 is -C(=O)NH-, -NHC(=O)-, -O-, -C(=O)O-, -OC(=O)-, -OC(=O)O- or -NHC(=O)NH-(the left side of each bond is bonded to CX ¹²¹ X ¹²² ),

x1 is an integer from 0 to 10, y1 is 0 or 1, and z1 is an integer from 1 to 10.

The above-mentioned X ^a1 is preferably -O- or -C(=O)O-.

The above-mentioned X ^a is preferably a base represented by the following formula:

-(CF ₂ ) _m11 -(CH ₂ ) _m12 -O-(CH ₂ ) _m13 -

In the formula, m11 is an integer from 1 to 3, m12 is an integer from 1 to 3, and m13 is an integer from 1 to 3; or

The basis represented by the following formula:

-(CF ₂ ) _m14 -(CH ₂ ) _m15 -O-CH ₂ CH(OH)-(CH ₂ ) _m16 -

In the formula, m14 is an integer from 1 to 3, m15 is an integer from 1 to 3, and m16 is an integer from 1 to 3; or

The basis represented by the following formula:

-(CF ₂ ) _m17 -(CH ₂ ) _m18 -

In the formula, m17 is an integer from 1 to 3, m18 is an integer from 1 to 3; or

The basis represented by the following formula:

-(CF ₂ ) _m19 -(CH ₂ ) _m20 -O-CH ₂ CH(OSi(OCH ₃ ) ₃ )-(CH ₂ ) _m21 -

In the formula, m19 is an integer from 1 to 3, m20 is an integer from 1 to 3, m21 is an integer from 1 to 3; or

The basis represented by the following formula:

-(CH ₂ ) _m22 -

In the formula, m22 is an integer from 1 to 3.

The above-mentioned X ^a is not particularly limited, and specific examples include:

-CH ₂ -, -C ₂ H ₄ -, -C ₃ H ₆ -, -C ₄ H ₈ -, -C ₄ H ₈ -O-CH ₂ -, -CO-O-CH ₂ -CH(OH) -CH ₂ -, -(CF ₂ ) _n5 -(n5 is an integer from 0 to 4), -(CF ₂ ) _n5 -(CH ₂ ) _m5 -(n5 and m5 are independently an integer from 0 to 4), -CF ₂ CF ₂ CH ₂ OCH ₂ CH(OH)CH ₂ -, -CF ₂ CF ₂ CH ₂ OCH ₂ CH(OSi(OCH ₃ ) ₃ )CH ₂ -etc.

In this aspect, X ^A can be independently a 2- or 3-valent base.

In one aspect, the fluorine polyether group-containing silane compound represented by formula (A1) or formula (A2) does not contain a siloxane bond (-Si-O-Si-).

The fluorine polyether group-containing silane compound represented by formula (A1) or formula (A2) is not particularly limited, and may have a number average molecular weight of 5×10 ² to 1×10 ⁵ . Within this range, those having a number average molecular weight of 2,000 to 32,000, particularly preferably 2,500 to 12,000 are preferred from the viewpoint of friction durability. The number average molecular weight of the silane compound containing a fluorine polyether group is a value measured by ¹⁹ F-NMR.

In one aspect, the number average molecular weight of the fluorine-containing polyether group silane compound represented by formula (A1) or formula (A2) is 500 to 30,000, preferably 1,000 to 20,000, particularly preferably 2,000 to 15,000, and further More preferably, it is 2,000 to 10,000, for example, it can be 3,000 to 6,000.

In other aspects, the number average molecular weight of the fluorine-containing polyether group silane compound represented by formula (A1) or formula (A2) is 4,000 to 30,000, preferably 5,000 to 10,000, particularly preferably 6,000 to 10,000 .

In one aspect, in the surface treatment agent of the present disclosure, the silane compound containing a fluoropolyether group is a compound represented by formula (A1).

In other aspects, in the surface treatment agent of the present disclosure, the silane compound containing a fluoropolyether group is a compound represented by formula (A2).

In other aspects, in the surface treatment agent of the present disclosure, the fluorine-containing polyether group silane compound is a compound represented by formula (A1) and a compound represented by formula (A2).

In other aspects, in the surface treatment agent of the present disclosure, the compound represented by formula (A1) and the compound represented by formula (A2) may be separately or partially condensed with each other. That is, between compounds represented by formula (A1), between compounds represented by formula (A2), or between compounds represented by formula (A1) and compounds represented by formula (A2), also Can exist in a partially condensed state. Therefore, the surface treatment agent of the present disclosure may contain: a compound represented by formula (A1) A partial condensate of a compound represented by formula (A2), or a partial condensate of a compound represented by formula (A1) and a compound represented by formula (A2).

In the surface treatment agent of the present disclosure, the compound represented by formula (A2) is preferably 0.1 mol% or more 35 based on the total of the compound represented by formula (A1) and the compound represented by formula (A2). Mol% or less. The lower limit of the content of the compound represented by formula (A2) is preferably 0.1 mol%, particularly preferably 0.2 mol%, based on the total of the compound represented by formula (A1) and the compound represented by formula (A2). %, more preferably 0.5 mol%, still more preferably 1 mol%, particularly preferably 2 mol%, especially 5 mol%. The upper limit of the content of the compound represented by formula (A2) is preferably 35 mol%, particularly preferably 30 mol%, relative to the total of the compound represented by formula (A1) and the compound represented by formula (A2). %, preferably 20 mol%, and even more preferably 15 mol% or 10 mol%. The compound represented by formula (A2) is preferably 0.1 mol% or more and 30 mol% or less based on the total of the compound represented by formula (A1) and the compound represented by formula (A2), and particularly preferably 0.1 mol% or more and 20 mol% or less, more preferably 0.2 mol% or more and 10 mol% or less, still more preferably 0.5 mol% or more and 10 mol% or less, particularly preferably 1 mol% or more and 10 mol% or less. % or less, for example, 2 mol% or more and 10 mol% or less or 5 mol% or more and 10 mol% or less. By setting the compound represented by formula (A2) within this range, friction durability can be further improved.

The compound represented by the formula (A1) or (A2) can be obtained, for example, by the method described in the above-mentioned Patent Document 1, Japanese International Publication No. 2006/10708, Japanese Patent Application Laid-Open No. 2019-183160, and the like.

(Fluorinated polyether-based polyoxyalkylene compound)

The above-mentioned fluoropolyether group-containing polyoxyalkylene compound is a compound containing a polyoxyalkylene group and a fluoropolyether group.

In addition to the fluorine-containing polyether-based silane compound of the component (A), the surface treatment agent of the present disclosure also contains the fluorine-containing polyether-based polyoxyalkylene compound of the component (B), so that the friction durability is further improved.

In one aspect, the above-mentioned fluorine-containing polyether group polyoxyalkylene compound is a compound represented by the following formula (B1) or (B2):

R ^FB1 -X ^B -R ^B (B1)

R ^B -X ^B -R ^FB2 -X ^B -R ^B (B2)

In the formula:

R ^FB1 is Rf ¹ -R ^F -O _q -,

R ^FB2 is -Rf ² _p -R ^F -O _q -,

R ^F are independently divalent fluoropolyether groups,

Rf ¹ may be a C _1-16 alkyl group substituted by 1 or more than 1 fluorine atom,

Rf ² may be a C _1-6 alkylene group substituted by 1 or more than 1 fluorine atom,

p is 0 or 1,

q is independently 0 or 1,

X ^B is independently a single bond or a divalent base,

R ^B are each independently an alkylene oxide-containing group.

In formula (B1), R ^FB1 is Rf ¹ -R ^F -O _q -.

In formula (B2), R ^FB2 is -Rf ² _p -R ^F -O _q -.

R ^FB1 and R ^FB2 in formulas (B1) and (B2) respectively correspond to R ^FA1 and R ^FA2 in formulas (A1) and (A2). Rf ¹ -R ^F -O _q -and -Rf ² _p -R ^F -O _q - in formulas (B1) and (B2) and Rf ¹ -R ^F -O _q in formulas (A1) and (A2) - and -Rf ² _p -R ^F -O _q - have the same meaning and may have the same form. Among the surface treatment agents, R ^FB1 and R ^FA1 and R ^FA2 and R ^FB2 may be the same or different, respectively.

In formulas (B1) and (B2), X ^B is independently a single bond or a divalent group. In the following, the left side of X ^B is bonded to R ^FB1 or R ^FB2 .

The above-mentioned divalent group is preferably an oxygen atom, a sulfur atom, NH, CO or a divalent organic group, more preferably an oxygen atom or a divalent organic group, and particularly preferably a divalent organic group.

In a state, X ^B are independently a single bond or a base represented by -(R ⁶⁷ ) _b1 -(R ⁶⁸ ) _b2 -,

In the formula:

R ⁶⁷ are each independently C _1-6 alkylene group,

R ⁶⁸ is independently an oxygen atom, a sulfur atom, CO, NR ⁶⁹ , CONR ⁶⁹ , NR ⁶⁹ CO or C _6-12 aryl group,

R ⁶⁹ are each independently a hydrogen atom or a C _1-6 alkyl group,

b1 is an integer from 0 to 6,

b2 is an integer from 0 to 6,

The total of b1 and b2 is 1 or more,

The order of existence of each repeating unit marked b1 or b2 and enclosed in parentheses is arbitrary in the formula.

X ^B are preferably each independently a single bond, C _1-6 alkylene group or -R ⁶⁴ -OR ⁶⁵ -. R ⁶⁴ is a single bond or C _1-6 alkylene group; R ⁶⁵ is a single bond or C _1-6 alkylene group.

In one form, X ^B are each independently a single bond or a C _1-6 alkylene group.

In other forms, X ^B are independently single bonds.

In other aspects, X ^B are each independently a C _1-6 alkylene group.

_{The above} ^- _mentioned replaced by base. In one state, X ^B is non-substituted.

In formulas (B1) and (B2), R ^B are each independently an oxyalkylene-containing group.

The above-mentioned oxyalkylene-containing group means a group containing an oxyalkylene group (-O-alkylene group).

The above-mentioned oxyalkylene-containing group is preferably a group represented by the following formula:

-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² , or

-X ^E (-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² ) _r2

In the formula:

R ⁶¹ is a single bond or C _1-6 alkylene group,

R ⁶² is a hydrogen atom, C _1-6 alkyl group or C _1-6 alkoxy group,

R ⁶³ are each independently C _1-6 alkylene group,

X ^E is 3 to 10 price base,

r2 is an integer from 2 to 9, and is 1 less than the valence of X ^E.

In a preferred embodiment, the above-mentioned oxyalkylene-containing group is -R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² .

In other forms, the above-mentioned oxyalkylene-containing group is -X ^E (-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² ) _r2 .

In the above formula, R ⁶¹ is a single bond or C _1-6 alkylene group.

In one form, R ⁶¹ is a single bond.

In other aspects, R ⁶¹ is C _1-6 alkylene.

The C _1-6 alkylene group in the above-mentioned R ⁶¹ may be a straight chain or a branched chain. In one form, the C _1-6 alkylene group in R ⁶¹ is a straight chain. In other aspects, the C _1-6 alkylene group in R ⁶¹ is a branched chain.

The C _1-6 alkylene group in the above-mentioned R ⁶¹ is preferably a C _1-4 alkylene group, and particularly preferably a C _1-3 alkylene group.

In the above formula, R ⁶² is each independently a hydrogen atom, a C _1-6 alkyl group or a C _1-6 alkoxy group.

In one state, R ⁶² is a hydrogen atom.

In other aspects, R ⁶² is C _1-6 alkyl.

In other aspects, R ⁶² is C _1-6 alkoxy.

The C _1-6 alkyl group in the above-mentioned R ⁶² may be a straight chain or a branched chain. In one form, the C _1-6 alkyl group in R ⁶² is a straight chain. In other aspects, the C _1-6 alkyl group in R ⁶² is a branched chain.

The C _1-6 alkyl group in the above-mentioned R ⁶² is preferably a C _1-4 alkyl group, especially a C _1-3 alkyl group.

The C _1-6 alkoxy group in the above R ⁶² may be a straight chain or a branched chain. In one form, the C _1-6 alkoxy group in R ⁶² is a straight chain. In other aspects, the C _1-6 alkoxy group in R ⁶² is a branched chain.

The C _1-6 alkoxy group in the above-mentioned R ⁶² is preferably a C _1-4 alkoxy group, and particularly preferably a C _1-3 alkoxy group.

In the above formula, R ⁶³ is each independently a C _1-6 alkylene group.

The C _1-6 alkylene group in R ⁶³ may be a straight chain or a branched chain. In one form, the C _1-6 alkylene group in R ⁶³ is a straight chain. In other aspects, the C _1-6 alkylene group in R ⁶³ is a branched chain.

The above-mentioned C _1-6 alkylene group is preferably a C _1-3 alkylene group, and particularly preferably a C _2-3 alkylene group.

b3 is an integer from 1 to 6, preferably an integer from 1 to 4, for example, it can be an integer from 1 to 3, 1 to 2 or 2 to 4.

In the above formula, X ^E is a 3- to 10-valent base, preferably a 3- to 6-valent base.

The above-mentioned 3- to 10-valent hydrocarbon groups are preferably 3 to 10-valent hydrocarbon groups, particularly preferably 3 to 6-valent hydrocarbon groups.

^Preferably _{, _ _ _ _ _ _ _ _ _ _} base.

In the above formula, r2 is a value smaller than the valence of X ^E by 1, and is an integer from 2 to 9, preferably an integer from 2 to 6, such as 3 or 4.

The number average molecular weight of the fluoropolyether group-containing polyoxyalkylene compound represented by formula (B1) or (B2) is not particularly limited, and may have a number average molecular weight of 5×10 ² to 1×10 ⁵ . Within this range, those having a number average molecular weight of 1,000 to 20,000, particularly preferably 2,000 to 10,000 are preferred from the viewpoint of friction durability. The number average molecular weight of the fluoropolyether group-containing polyoxyalkylene compound is a value measured by ¹⁹ F-NMR.

The above-mentioned fluoropolyether group-containing polyoxyalkylene compounds represented by formulas (B1) and (B2) can be synthesized, for example, by the following method.

The compound represented by the following formula (1a) or (2a):

^RFB1 - ^XB -OH (1a)

HOOC-X ^B -R ^FB2 -X ^B -OH (2a)

[In the formula, each symbol has the same meaning as above];

Together with the base and the following formula:

R ^H R ^B

[In the formula:

R ^H is a halogen atom, preferably a bromine atom,

R ^B has the same meaning as above];

Obtained by reaction.

Examples of the base include sodium hydroxide, sodium hydride, and the like.

In one aspect, in the surface treatment agent of the present disclosure, the polyoxyalkylene compound containing a fluoropolyether group is a compound represented by formula (B1).

In other aspects, in the surface treatment agent of the present disclosure, the fluoropolyether-based polyoxyalkylene compound is a compound represented by formula (B2).

In other aspects, in the surface treatment agent of the present disclosure, the fluorine-containing polyether group polyoxyalkylene compound is a compound represented by formula (B1) and a compound represented by formula (B2).

In other aspects, in the surface treatment agent of the present disclosure, the compound represented by formula (B1) and the compound represented by formula (B2) may be separately or partially condensed with each other. That is, between compounds represented by formula (B1), between compounds represented by formula (B2), or between compounds represented by formula (B1) and compounds represented by formula (B2), or between compounds represented by formula (B1) and compounds represented by formula (B2). Can exist in a partially condensed state. Therefore, the surface treatment agent of the present disclosure may contain: a partial condensate of a compound represented by formula (B1), a partial condensate of a compound represented by formula (B2), or a compound represented by formula (B1) A partial condensate of a compound represented by formula (B2).

The content of component (B) is preferably 1 mass% or more, more preferably 5 mass% or more, and more preferably 10 mass% or more based on the total of component (A) and component (B). In addition, the content of component (B) is preferably 70 mass% or less, more preferably 60 mass% or less, more preferably 35 mass% or less, based on the total of component (A) and component (B), and still more preferably 25% by mass or less, preferably 20% by mass or less. By containing component (B) in the above-mentioned amount, a surface-treated layer having excellent friction durability can be obtained.

In one aspect, the content of component (B) is preferably 1 to 70 mass%, more preferably 1 to 40 mass%, more preferably 5 to 40 mass%, based on the total of component (A) and component (B). %.

In the surface treatment agent, the total concentration of component (A) and component (B) is preferably 0.1 to 99.9 mass%, more preferably 1.0 to 50 mass%, more preferably 5.0 to 30 mass%, and more preferably Preferably, it is 5.0 to 15% by mass.

In the surface treatment agent of the present disclosure, component (A) and component (B) may also exist in a partially condensed state. That is, the surface treatment agent of the present disclosure may contain a partial condensate of component (A) and component (B).

(other ingredients)

The surface treatment agent of the present disclosure may contain: solvents, alcohols, (non-reactive) fluoropolyether compounds that can be understood as fluorine-containing oils, preferably perfluoropolyether compounds (hereinafter collectively referred to as "fluorine-containing oils") , which can be understood as (non-reactive) polysilicone compounds (hereinafter referred to as "polysilicone oil"), compatibilizers, catalysts, surfactants, polymerization inhibitors, sensitizers, etc. .

烷(Dioxane)等環狀醚類；N,N-二甲基甲醯胺、N,N-二甲基乙醯胺等醯胺類；甲基溶纖劑、溶纖劑、異丙基溶纖劑、丁基溶纖劑、二乙二醇單甲醚等醚醇類；二乙二醇單乙醚乙酸酯；1,1,2-三氯-1,2,2-三氟乙烷、1,2-二氯-1,1,2,2-四氟乙烷、二甲基亞碸、1,1-二氯-1,2,2,3,3-五氟丙烷(HCFC 225)、1,1,2,2,3,3,4-七氟環戊烷(例如Zeorora H)、全氟丁基甲醚(C₄F₉OCH₃)(例如HFE7100)、全氟丁基乙醚(C₄F₉OC₂H₅)(例HFE 7200)、全氟己基甲醚(C₂F₅CF(OCH₃)C₃F₇)(例如HFE7300)、CF₃CH₂OH、CF₃CF₂CH₂OH、(CF₃)₂CHOH、1,1,2,3,3,3-六氟丙基甲醚(CF₃CFHCF₂OCH₃)(HFE-356mec)等含氟溶劑等。或是此等之2種以上的混合溶劑等。 Examples of the above-mentioned solvent include aliphatic hydrocarbons such as hexane, cyclohexane, heptane, octane, nonane, decane, undecane, dodecane, and mineral spirits; benzene, toluene, xylene, naphthalene, etc. , solvent oil and other aromatic hydrocarbons; methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isopropyl acetate, isobutyl acetate, cellosolve acetate, propylene glycol methyl ether acetate, card acetate Bitol, diethyl oxalate, ethyl pyruvate, ethyl butyrate-2-hydroxy ester, ethyl acetyl acetate, amyl acetate, methyl lactate, ethyl lactate, methyl 3-methoxypropionate , ethyl 3-methoxypropionate, methyl 2-hydroxyisobutyrate, ethyl 2-hydroxyisobutyrate and other esters; acetone, butanone, methyl isobutyl ketone, 2-hexanone, cyclohexanone Ketones such as ketone, methylamine ketone, 2-heptanone; ethyl cellosolve, methyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether, propylene glycol Glycol ethers such as monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, dipropylene glycol dimethyl ether, ethylene glycol monoalkyl ether; methanol , ethanol, isopropanol, n-butanol, isobutanol, tertiary butanol, second butanol, 3-pentanol, octanol, 3-methyl-3-methoxybutanol, tertiary pentanol Alcohols such as ethylene glycol, propylene glycol and other glycols; Tetrahydrofuran (Tetrahydrofuran), Tetrahydropyran (Tetrahydropyran), diols

Dioxane and other cyclic ethers; N,N-dimethylformamide, N,N-dimethylacetamide and other amides; methyl cellosolve, cellosolve, isopropyl Cellulose agent, butyl cellosolve, diethylene glycol monomethyl ether and other ether alcohols; diethylene glycol monoethyl ether acetate; 1,1,2-trichloro-1,2,2-trifluoroethane, 1 ,2-Dichloro-1,1,2,2-tetrafluoroethane, dimethylstyrene, 1,1-dichloro-1,2,2,3,3-pentafluoropropane (HCFC 225), 1,1,2,2,3,3,4-Heptafluorocyclopentane (such as Zeorora H), perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) (such as HFE7100), perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) (e.g. HFE 7200), perfluorohexyl methyl ether (C ₂ F ₅ CF (OCH ₃ ) C ₃ F ₇ ) (e.g. HFE7300), CF ₃ CH ₂ OH, CF ₃ CF ₂ CH ₂ Fluorine-containing solvents such as OH, (CF ₃ ) ₂ CHOH, 1,1,2,3,3,3-hexafluoropropyl methyl ether (CF ₃ CFHCF ₂ OCH ₃ ) (HFE-356mec), etc. Or a mixed solvent of two or more of these.

The above-mentioned alcohols are, for example, alcohols with 1 to 6 carbon atoms that may be substituted by one or more fluorine atoms. Examples include: methanol, ethanol, isopropyl alcohol, tert-butanol, CF ₃ CH ₂ OH , CF ₃ CF ₂ CH ₂ OH, (CF ₃ ) ₂ CHOH, H(CF ₂ CF ₂ )CH ₂ OH, H(CF ₂ CF ₂ ) ₂ CH ₂ OH, H(CF ₂ CF ₂ ) ₃ CH ₂ OH . By adding these alcohols to the surface treatment agent, the stability of the surface treatment agent is improved, and the compatibility between component (A) and component (B) and the solvent is improved.

In a preferred aspect, the surface treatment agent of the present disclosure contains a solvent and alcohol.

The alcohol content is preferably 0.1 to 50% by mass, more preferably 0.5 to 30% by mass, more preferably 1.0 to 20% by mass, and still more preferably 2.0 to 10% by mass relative to the total of the solvent and alcohol.

The fluorine-containing oil is not particularly limited, and examples thereof include compounds represented by the following general formula (3) (perfluoropolyether compounds).

Rf ⁵ -(OC ₄ F ₈ ) _a' -(OC ₃ F ₆ ) _b' -(OC ₂ F ₄ ) _c' -(OCF ₂ ) _d' -Rf ⁶ ‧‧‧(3)

In the formula, Rf ⁵ represents an alkyl group having 1 to 16 carbon atoms (preferably a C _1-16 perfluoroalkyl group) which may be substituted by one or more fluorine atoms, and Rf ⁶ represents an alkyl group which may be substituted by one or more fluorine atoms. An alkyl group having 1 to 16 carbon atoms (preferably C _1-16 perfluoroalkyl group), fluorine atom or hydrogen atom substituted by more than 1 fluorine atom, preferably Rf ⁵ and Rf ⁶ are independently C _1-3 perfluoroalkyl.

a', b', c' and d' respectively represent the number of four repeating units of the perfluoropolyether constituting the main skeleton of the polymer, and are independently integers from 0 to 300. a', b', c The sum of ' and d' is at least 1, preferably 1 to 300, particularly preferably 20 to 300. The order of existence of each repeating unit marked with the subscript a', b', c' or d' and enclosed in parentheses is arbitrary in the formula. In these repeating units, -(OC ₄ F ₈ )- is -(OCF ₂ CF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ CF ₂ )-, -(OCF ₂ CF(CF ₃ )CF ₂ )-,-(OCF ₂ CF ₂ CF(CF ₃ ))-,-(OC(CF ₃ ) ₂ CF ₂ )-,-(OCF ₂ C(CF ₃ ) ₂ )-,-(OCF Any one of (CF ₃ )CF(CF ₃ ))-, -(OCF(C ₂ F ₅ )CF ₂ )- and (OCF ₂ CF(C ₂ F ₅ ))-, preferably -(OCF ₂ CF ₂ CF ₂ CF ₂ )-. -(OC ₃ F ₆ )- is any one of -(OCF ₂ CF ₂ CF ₂ )-, -(OCF(CF ₃ )CF ₂ )- and (OCF ₂ CF(CF ₃ ))-, preferably -(OCF ₂ CF ₂ CF ₂ )-. -(OC ₂ F ₄ )- is any one of -(OCF ₂ CF ₂ )- and (OCF(CF ₃ ))-, and preferably -(OCF ₂ CF ₂ )-.

Examples of the perfluoropolyether compound represented by the general formula (3) include compounds represented by any one of the following general formulas (3a) and (3b) (which may be one type or a mixture of two or more types) ).

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ ) _b” -Rf ⁶ ‧‧‧(3a)

Rf ⁵ -(OCF ₂ CF ₂ CF ₂ CF ₂ ) _a” -(OCF ₂ CF ₂ CF ₂ ) _b” -(OCF ₂ CF ₂ ) _c” -(OCF ₂ ) _d” -Rf ⁶ ‧‧‧(3b )

In this equation, Rf ⁵ and Rf ⁶ are as explained above; in formula (3a), b” is an integer from 1 to 100; in formula (3b), a” and b” are independently 0 or more Integers below 30, c” and d” are independently integers above 1 and below 300. The subscripts a”, b”, c”, d” are marked and the order of existence of each repeating unit enclosed in parentheses is in the formula is arbitrary.

In addition, from another point of view, the fluorine-containing oil may be a compound represented by the general formula Rf ³ -F (in the formula, Rf ³ is a C _5-16 perfluoroalkyl group). In addition, it may also be a chlorotrifluoroethylene oligomer.

The above-mentioned fluorine-containing oil may have an average molecular weight of 500 to 10,000. The molecular weight of fluorinated oil can be determined using GPC.

Relative to the surface treatment agent of the present disclosure, the fluorine-containing oil may contain, for example, 0 to 50 mass%, preferably 0 to 30 mass%, and particularly preferably 0 to 5 mass%. In one aspect, the surface treatment agent of the present disclosure contains substantially no fluorine-containing oil. The term “substantially does not contain fluorinated oil” means that it does not contain fluorinated oil at all or contains a very small amount of fluorinated oil.

In one aspect, the average molecular weight of the fluorine-containing oil can be set to be greater than the average molecular weight of the silane compound containing the fluorine-containing polyether group. By setting the average molecular weight to this value, particularly when the surface treatment layer is formed by vacuum evaporation, more excellent friction durability and surface smoothness can be obtained.

In one aspect, the average molecular weight of the fluorine-containing oil may be smaller than the average molecular weight of the silane compound containing the fluorine-containing polyether group. By setting the average molecular weight to this, it is possible to form a cured product having high friction durability and high surface smoothness while suppressing the decrease in transparency of the surface treatment layer obtained from the compound.

Fluorine-containing oil is beneficial to improving the surface smoothness of the layer formed by the surface treatment agent of the present disclosure.

As the polysiloxane oil, for example, a linear or cyclic polysiloxane oil having a siloxane bond number of 2,000 or less can be used. Linear polysilicone oil can be so-called pure polysilicone oil and modified polysilicone oil. Examples of pure polysilicone oil include dimethyl polysilicone oil, methylphenyl polysilicone oil, and methyl hydrogen polysilicone oil. Modified polysilicone oils include those that modify pure polysilicone oil through alkyl groups, aralkyl groups, polyethers, higher fatty acid esters, fluoroalkyl groups, amine groups, epoxy groups, carboxyl groups, alcohols, etc. . Examples of the cyclic polysiloxane oil include cyclic dimethylsiloxane oil.

In the surface treatment agent of the present disclosure, relative to a total of 100 parts by mass of the fluorine-containing polyether group silane compound of the present disclosure (in the case of two or more cases, the total of these, the same applies below), the polysiloxane The oil can be contained in, for example, 0 to 300 parts by mass, preferably 50 to 200 parts by mass.

Polysilicone oil is beneficial to improve the surface smoothness of the surface treatment layer.

Examples of the above-mentioned compatibilizing agents include: 2,2,2-trifluoroethanol, 2,2,3,3,3-pentafluoro-1-propanol or 2,2,3,3,4,4,5,5 -Fluorine-substituted alcohols such as octafluoro-1-pentanol, preferably fluorine-substituted alcohols with CF ₂ H at the end; fluorine-substituted aryl groups such as 1,3-bis(trifluoromethyl)benzene, preferably fluorine-substituted benzene wait.

Examples of the above catalyst include acids (such as acetic acid, trifluoroacetic acid, etc.), bases (such as ammonia, triethylamine, diethylamine, etc.), transition metals (such as Ti, Ni, Sn, etc.).

The catalyst promotes the hydrolysis and dehydration condensation of the fluorine-containing polyether group silane compound, thereby promoting the formation of the layer formed by the surface treatment agent of the present disclosure.

In addition to the above, examples of other components include: tetraethoxysilane, methyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, and methyltriethoxysilane. Oxysilane, etc.

The composition of the present disclosure (such as surface treatment agent) can be impregnated with porous materials, such as porous ceramic materials, or metal fibers, such as steel wool, which are solidified into cotton-like shapes and formed into particles. The particles can be used, for example, in vacuum evaporation.

In addition to the above-mentioned components, the surface treatment agent of the present disclosure may also contain trace amounts of impurities such as Pt, Rh, Ru, 1,3-divinyltetramethyldisiloxane, triphenylphosphine, NaCl, and KCl. , condensates of silane, etc.

(thing)

The following describes the items disclosed.

The article of the present disclosure includes: a substrate; and a layer (surface treatment layer) formed by the surface treatment agent of the present disclosure on the surface of the substrate.

The substrates that can be used in the present disclosure can be made of, for example, glass, resin (natural or synthetic resin, such as general plastic materials), metal, ceramics, semiconductors (silicon, germanium, etc.), fibers (fabrics, non-woven fabrics, etc.), fur, It is composed of any suitable material such as leather, wood, ceramics, stone, etc., building components, etc., and sanitary products.

For example, when the article to be manufactured is an optical component, the material constituting the surface of the base material may be a material for optical components, such as glass or transparent plastic. In addition, when the article to be manufactured is an optical component, a certain layer (or film), such as a hard coating layer or an anti-reflective layer, may be formed on the surface (outermost layer) of the base material. As the anti-reflection layer, either a single-layer anti-reflection layer or a multi-layer anti-reflection layer can be used. Examples of inorganic substances that can be used in the anti-reflective layer include: SiO ₂ , SiO, ZrO ₂ , TiO ₂ , TiO, Ti ₂ O ₃ , Ti ₂ O ₅ , Al ₂ O ₃ , Ta ₂ O ₅ , Ta ₃ O ₅ , Nb ₂ O ₅ , HfO ₂ , Si ₃ N ₄ , CeO ₂ , MgO, Y ₂ O ₃ , SnO ₂ , MgF ₂ , WO ₃ , etc. These inorganic substances can be used individually or in combination of 2 or more types (for example, a mixture). In the case of a multi-layer anti-reflection layer, it is preferable to use SiO ₂ and/or SiO in the outermost layer. When the article to be manufactured is an optical glass component for a touch panel, a transparent electrode may be provided on part of the surface of the base material (glass), for example, a thin film using indium tin oxide (ITO) or indium zinc oxide. . In addition, the base material can have an insulating layer, an adhesive layer, a protective layer, a decorative frame layer (I-CON), an atomized film layer, a hard coating layer, a polarizing film, a phase difference film, and a liquid crystal display according to the specific specifications. Modules etc.

The shape of the above-mentioned substrate is not particularly limited, and may be, for example, plate-shaped, film-shaped, or other shapes. In addition, the surface area of the base material on which the surface treatment layer should be formed only needs to be at least a part of the surface of the base material, and can be appropriately determined according to the use and specific specifications of the article to be manufactured.

In one aspect, the substrate may be one in which at least part of its surface is composed of a material that originally has hydroxyl groups. Examples of the material include glass, metals (especially base metals), ceramics, and semiconductors having natural oxide films or thermal oxide films formed on the surface. Or when there are hydroxyl groups, such as resins, but they are not sufficient, or when there are no hydroxyl groups in the first place, hydroxyl groups are introduced or added to the surface of the base material by subjecting the base material to some kind of pretreatment. Its quantity. Examples of this pretreatment include plasma treatment (such as corona discharge) or ion beam irradiation. Since plasma treatment can introduce or increase the amount of hydroxyl groups on the surface of the substrate and clean the surface of the substrate (removing foreign matter, etc.), it can also be used appropriately. In addition, other examples of this pretreatment can include: using the LB method (Langmuir-Blodgett method) or chemical adsorption method, etc., to pre-treat carbon in the form of a monomolecular film. -The interfacial adsorbent of carbon unsaturated bonding group is formed on the surface of the substrate, and then the unsaturated bond is cracked in an environment containing oxygen or nitrogen.

In other aspects, the substrate may also be composed of at least a surface part of a polysiloxy compound having one or more other reactive groups, such as Si-H groups, or a material containing alkoxysilane.

In a preferred aspect, the substrate is glass. The glass is preferably sapphire glass, soda-lime glass, alkali aluminosilicate glass, borosilicate glass, alkali-free glass, crystallized glass, quartz glass, and particularly preferably chemically strengthened soda-lime glass, chemically strengthened alkali glass Aluminosilicate glass, and chemically bonded borosilicate glass.

The article of the present disclosure can be formed by forming a layer of the surface treatment agent of the present disclosure on the surface of the above-mentioned substrate, and then post-processing the layer if necessary to form a layer composed of the surface treatment agent of the present disclosure.

The layer of the surface treatment agent disclosed in the present disclosure can be formed by applying the above-mentioned surface treatment agent on the surface of the substrate in a manner to cover the surface. The covering method is not particularly limited. For example, a wet coating method and a dry coating method can be used.

Examples of wet coating methods include dip coating, spin coating, flow coating, spray coating, roll coating, gravure coating and similar methods.

Examples of dry coating methods include evaporation (usually vacuum evaporation), sputtering, CVD and similar methods. Specific examples of evaporation methods (usually vacuum evaporation methods) include resistance heating, electron beams, high-frequency heating using microwaves, ion beams, and similar methods. Specific examples of the CVD method include plasma CVD, optical CVD, thermal CVD and similar methods.

Furthermore, it can also be coated by the normal pressure plasma method.

When a wet coating method is used, the surface treatment agent of the present disclosure can be applied on the surface of the substrate after being diluted with a solvent. From the viewpoint of the stability of the surface treatment agent and the volatility of the solvent of the present disclosure, the following solvents are suitable for use: perfluoroaliphatic hydrocarbons with 5 to 12 carbon atoms (such as perfluorohexane, perfluoromethylcyclohexane alkane and perfluoro-1,3-dimethylcyclohexane); polyfluorinated aromatic hydrocarbons (such as bis(trifluoromethyl)benzene); polyfluorinated aliphatic hydrocarbons (such as C ₆ F ₁₃ CH ₂ CH ₃ ( For example, Asahiklin (registered trademark) AC-6000 manufactured by Asahi Glass Co., Ltd.), 1,1,2,2,3,3,4-heptafluorocyclopentane (such as Zeorora (registered trademark) manufactured by Zeon Japan Co., Ltd. H); hydrofluoroether (HFE) (such as perfluoropropyl methyl ether (C ₃ F ₇ OCH ₃ ) (such as Novec (trademark) 7000 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) (for example, Novec (trademark) 7100 manufactured by Sumitomo 3M Co., Ltd.), perfluorobutyl ether (C ₄ F ₉ OC ₂ H ₅ ) (for example, Novec (trademark) 7200 manufactured by Sumitomo 3M Co., Ltd.), _{Alkyl perfluoroalkyl} ethers _{( perfluoroalkyl and} alkyl It can be linear or branched), or CF ₃ CH ₂ OCF ₂ CHF ₂ (for example, Asahiklin (registered trademark) AE-3000 manufactured by Asahi Glass Co., Ltd.)), etc. These solvents can be used alone or as two types A mixture of the above is used. Among them, hydrofluoroether is preferred, and perfluorobutyl methyl ether (C ₄ F ₉ OCH ₃ ) and/or perfluorobutyl ethyl ether (C ₄ F ₉ OC ₂ H ₅ ) is particularly preferred.

When a dry coating method is used, the surface treatment agent of the present disclosure can be used directly in the dry coating method, or can be used in the dry coating method after being diluted with the above solvent.

The layer formation of the surface treatment agent is preferably carried out in such a manner that the surface treatment agent of the present disclosure is present together with a catalyst for hydrolysis and dehydration condensation in the layer. Simply speaking, when it is carried out by the wet coating method, after diluting the surface treatment agent of the present disclosure with a solvent, a catalyst can be added to the surface treatment agent of the present disclosure shortly before applying it to the surface of the substrate. diluent. at When the dry coating method is used, the surface treatment agent disclosed in this disclosure with a catalyst added can be directly subjected to evaporation (usually vacuum evaporation), or the surface treatment agent disclosed in this disclosure with a catalyst added can be used. The agent is impregnated into a porous metal such as iron or copper to form a granular material, and then the granular material is used for evaporation (usually vacuum evaporation).

Any suitable acid or alkali can be used as the catalyst. As the acid catalyst, for example, acetic acid, formic acid, trifluoroacetic acid, etc. can be used. In addition, ammonia, organic amines, etc. can be used as an alkali catalyst, for example.

Articles of the present disclosure contain surface treatments that provide high friction durability. In addition, in addition to high friction durability, the above-mentioned surface treatment layer may also have water repellency, oil repellency, and antifouling properties (for example, preventing the adhesion of dirt such as fingerprints), depending on the composition of the surface treatment agent used. Water resistance (preventing water from penetrating into electronic parts, etc.), surface smoothness (or lubricity, such as the ability to wipe away dirt such as fingerprints or excellent touch against fingers), chemical resistance, etc., can be suitable for use as Functional films.

That is, the present disclosure further relates to an optical material having the above-mentioned surface treatment layer in the outermost layer.

In addition to the optical materials related to displays and the like exemplified below, the optical materials are also suitable for various optical materials: for example, cathode ray tubes (CRT (Cathode Ray Tube); for example, personal computer monitors), liquid crystal displays, electronic Displays such as slurry displays, organic EL displays, inorganic thin film EL dot matrix displays, rear projection displays, fluorescent display tubes (VFD: Vacuum Fluorescent Display), field emission displays (FED; Field Emission Display) or the protective boards of these displays , or applying anti-reflective coating treatment to their surfaces.

The object of the present disclosure is not particularly limited and may be an optical component. Examples of optical components include: lenses for glasses, etc.; front protective plates, anti-reflection panels for displays such as PDP and LCD, etc. panels, polarizing plates, anti-glare plates; touch panels for mobile phones, portable information terminals and other machines; disc surfaces for Blu-ray (registered trademark) discs, DVD discs, CD-R, MO and other discs ; Optical fiber; display surface of clocks, etc.

In addition, the items disclosed herein may also be medical machines or medical materials.

The thickness of the above layer is not particularly limited. In the case of an optical member, the thickness of the above-mentioned layer is 1 to 50 nm, 1 to 30 nm, preferably 1 to 15 nm, from the viewpoint of optical performance, friction durability and antifouling properties.

The above has been a detailed description of the use of the surface treatment agents and articles disclosed herein. However, the surface treatment agents and articles disclosed in this disclosure are not limited to those illustrated above.

[Example]

The surface treatment agent of the present disclosure is described below in examples, but the present disclosure is not limited to the following examples. In this embodiment, the order of the repeating units constituting the fluoropolyether and the polyether is arbitrary, and the chemical formula shown below represents the average composition.

(ingredient (A))

The following compounds (a1) and (a2) were prepared as fluorine-containing polyether group silane compounds.

‧Compound (a1): m=15, n=16

‧Compound (a2): m=21, n=36

(ingredient (B))

The following compound (b) was prepared as a fluorine-containing polyether group polyoxyalkylene compound.

‧Compound (b): m=23.1, n=39.4, number average molecular weight=5620

Synthesis example (b)

The average composition will be HOCH ₂ CF ₂ O (CF ₂ CF ₂ ) _23.1 (CF ₂ O) _39.4 CF ₂ CH ₂ OH (but the mixture also contains trace amounts of the following compounds: trace amounts of (CF ₂ CF ₂ CF ₂ O ) and/or (a compound with a repeating unit of CF ₂ CF ₂ CF ₂ CF ₂ O)), 2 g of perfluoropolyether modified alcohol body, 4 g of 1,3-bis(trifluoromethyl)benzene, and hydrogen 0.1 g of sodium oxide was put into a 50 mL three-neck flask equipped with a reflux cooler, a thermometer and a stirrer, and stirred at 60°C for 2 hours. Then, 0.3 g of 1-bromo-2-(2-methoxyethoxy)ethane was added and stirred at 60° C. for 2 hours. Then, the washing operation with 3N hydrochloric acid through a separatory funnel was performed three times (more specifically, the fluorine-based compound was maintained in the 1,3-bis(trifluoromethyl)benzene phase, and the non-fluorine-based compound was Separate into hydrochloric acid layer (water system). Then, volatile components were distilled off under reduced pressure, thereby obtaining 1.3 g of a polyoxyalkylene compound (b) containing a perfluoropolyether group.

CH ₃ OCH ₂ CH ₂ OCH ₂ CH ₂ -OCH ₂ CF ₂ O(CF ₂ CF ₂ ) _20.4 (CF ₂ O) _34.5 CF ₂ CH ₂ O-CH ₂ CH ₂ OCH ₂ CH ₂ OCH ₃ (b)

Examples 1 to 3

(Preparation of surface treatment agent)

The fluorine-containing polyether group-containing silane compound (component A) and the fluorine-containing polyether group-containing polyoxyalkylene compound (component B) shown in Table 1 were mixed so as to achieve the ratios shown in Table 1. The obtained mixture was diluted with hydrofluoroether (Novec 7200, manufactured by 3M Company) so that the total concentration of component A and component B became 20% by mass, and a surface treatment agent was prepared.

Comparative Examples 1 to 2

A surface treatment agent was prepared in the same manner as in the above-described embodiment except that component B was not used.

[Table 1]

(Formation of surface treatment layer)

The surface treatment agents prepared above (Examples 1 to 3 and Comparative Examples 1 to 2) were vacuum evaporated on chemically strengthened glass ("Gorilla" glass manufactured by Corning Co., Ltd., thickness 0.7 mm). The processing conditions of vacuum evaporation were set to a pressure of 3.0×10 ^-3 Pa. First, a silica film was formed on the surface of the chemically strengthened glass, and then 400 mg of the surface treatment agent was evaporated to form a surface treatment layer.

(Measurement of initial contact angle)

For the surface treatment layer obtained from the surface treatment agent of Examples 1 to 3 and Comparative Examples 1 to 2, the static contact angle (degree) of water was measured at 5 places and the average value (degree) was taken, and it was set as The value of the initial contact angle (degrees) (the number of frictions is 0).

(Eraser (ER) friction durability test)

The base material on which the surface treatment layer was formed was arranged horizontally, and an eraser (manufactured by Minoan, model: MB006004, diameter 0.6cm) was brought into contact with the surface of the surface treatment layer, and then a load of 1000gf was applied to the top, and then the The eraser is moved back and forth at a speed of 20 mm/second under load to conduct an eraser friction durability test. Whenever the number of back and forth is 100, the static contact angle (degrees) of water at 5 locations is measured and the average value (degrees) is taken. The test was stopped when the average contact angle (degrees) did not reach 100 degrees, and the number of back and forth times when the contact angle exceeded 100 degrees was used as the value (times) of the eraser friction durability, and is shown in the table below.

[Table 2]

‧Evaluation of friction durability of steel wool (SW)

The steel wool friction durability was evaluated on the base material on which the surface treatment layer was formed. Specifically, the base material on which the surface treatment layer was formed was arranged horizontally, steel wool (number #0000, size 5 mm × 10 mm × 10 mm) was brought into contact with the surface treatment layer of the base material, and then 1,000 gf was applied on top of the base material. Load is applied, and then the steel wool is moved back and forth at a speed of 140mm/second while the load is applied. The static contact angle (degree) of water is measured every time the number of back and forth is 1000, and the evaluation is stopped when the measured value of the contact angle does not reach 100 degrees. The number of back and forth when the final contact angle exceeds 100 degrees is shown in the table below (in the table, the mark "-" indicates that it was not measured). The test was terminated when the number of back and forth times reached 20,000.

[table 3]

From the above results, it was confirmed that the surface treatment agent disclosed herein containing a silane compound containing a fluorine-containing polyether group and a polyoxyalkylene compound containing a fluorine-containing polyether group can form a surface treatment layer having excellent friction durability.

[Industrial applicability]

The disclosed article is suitable for application in various applications, such as as optical components such as touch panels.

Claims (27)

A fluoropolyether-based polyoxyalkylene compound, which is component (B) represented by the following formula (B1) or (B2): R ^FB1 -X ^B -R ^B (B1) R ^B -X ^B -R ^FB2 -X ^B -R ^B (B2) In the formula: R ^FB1 is Rf ¹ -R ^F -O _q -, R ^FB2 is -Rf ² _p -R ^F -O _q -, R ^F are independently divalent fluoropolyether groups, Rf ¹ is a C _1-16 alkyl group which may be substituted by 1 or more than 1 fluorine atom, Rf ² is a C _1-6 alkylene group which may be substituted by 1 or more than 1 fluorine atom, p is 0 or 1, q is independently 0 or 1, X ^B is independently a single bond or a divalent base, R ^B are each independently an alkylene oxide-containing group. The polyoxyalkylene compound containing fluoropolyether groups as claimed in claim 1, wherein the aforementioned oxyalkylene-containing groups are independently groups represented by the following formula: -R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² , or -X ^E (-R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² ) _r2 In the formula: R ⁶¹ are each independently a single bond or C _1-6 alkylene group, R ⁶² are each independently a hydrogen atom, C _1-6 alkyl group or C _1-6 alkoxy group, R ⁶³ are each independently C _1-6 alkylene group, b3 are independently integers from 1 to 6, X ^E is 3 to 10 price base, r2 is an integer from 2 to 9, and is 1 less than the valence of X ^E. The polyoxyalkylene compound containing fluoropolyether groups as claimed in claim 1 or 2, wherein the aforementioned oxyalkylene-containing groups are independently represented by the following formula: -R ⁶¹ -(OR ⁶³ ) _b3 -R ⁶² In the formula: R ⁶¹ is a single bond or C _1-6 alkylene group, R ⁶² is a hydrogen atom, C _1-6 alkyl group or C _1-6 alkoxy group, R ⁶³ are each independently C _1-6 alkylene group, b3 is an integer from 1 to 6. The polyoxyalkylene compound containing fluoropolyether group as described in claim 2 or 3, wherein R ⁶³ is a C _1-3 alkylene group. The fluoropolyether-based polyoxyalkylene compound as described in any one of claims 1 to 4, wherein X ^B is independently a single bond or -(R ⁶⁷ ) _b1 -(R ⁶⁸ ) _b2 -, In the formula: R ⁶⁷ are each independently C _1-6 alkylene group, R ⁶⁸ is independently an oxygen atom, a sulfur atom, CO, NR ⁶⁹ , CONR ⁶⁹ , NR ⁶⁹ CO or C _6-12 aryl group, R ⁶⁹ are each independently a hydrogen atom or a C _1-6 alkyl group, b1 is an integer from 0 to 6, b2 is an integer from 0 to 6, The total of b1 and b2 is 1 or more, The order of existence of each repeating unit marked b1 or b2 and enclosed in parentheses is arbitrary in the formula. The fluoropolyether-based polyoxyalkylene compound as described in any one of claims 1 to 5, wherein X ^B is independently a single bond, C _1-6 alkylene group or -R ⁶⁴ -OR ⁶⁵ -, R ⁶⁴ is a single bond or C _1-6 alkylene group, R ⁶⁵ is a single bond or C _1-6 alkylene group. The polyoxyalkylene compound containing fluoropolyether groups as described in any one of claims 1 to 6, wherein R ^F are independently groups represented by the following formula: -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - In the formula: R ^Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. . The fluoropolyether-based polyoxyalkylene compound as described in any one of claims 1 to 7, wherein Rf ¹ is a C _1-16 perfluoroalkyl group, Rf ² is C _1-6 perfluoroalkyl group, R ^F are independently the basis represented by the following formula: -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - In the formula: a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. . The fluoropolyether-based polyoxyalkylene compound as described in any one of claims 1 to 8, wherein R ^F are independently represented by the following formulas (f1), (f2), (f3), (f4), The basis represented by (f5) or (f6): -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1) In the formula, d is an integer from 1 to 200, and e is 0 or 1; -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2) In the formula, c and d are independently integers from 0 to 30, e and f are independently integers from 1 to 200, The sum of c, d, e and f is an integer from 10 to 200, The order of existence of each repeating unit marked c, d, e or f and enclosed in parentheses is arbitrary in the formula; -(R ⁶ -R ⁷ ) _g - (f3) In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups selected from these groups, g is an integer from 2 to 100; -(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4) In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups, R ^6' is OCF ₂ or OC ₂ F ₄ , R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups, g is an integer from 2 to 100, g’ is an integer from 2 to 100, R ^r is the following formula:

In the formula, * represents the bonding position; -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5) In the formula, e is an integer from 1 to 200, a, b, c, d and f are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary; -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6) In the formula, f is an integer from 1 to 200, a, b, c, d and e are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary. A surface treatment agent containing: component (A): fluorine-containing polyether-based silane compound, and Component (B): the fluorine-containing polyether-based polyoxyalkylene compound as described in any one of claims 1 to 9. The surface treatment agent according to claim 10, wherein the silane compound containing fluorine polyether group is a compound represented by the following formula (A1) or (A2): R ^FA1 _α1 -X ^A -R ^Si _β1 (A1) R ^Si _γ1 -X ^A -R ^FA2 -X ^A -R ^Si _γ1 (A2) In the formula: R ^FA1 are independently Rf ¹ -R ^F -O _q -, R ^FA2 is -Rf ² _p -R ^F -O _q -, R ^F are independently divalent fluoropolyether groups, Rf ¹ is a C _1-16 alkyl group which may be substituted by 1 or more than 1 fluorine atom, Rf ² is a C _1-6 alkylene group which may be substituted by 1 or more than 1 fluorine atom, p is 0 or 1, q is independently 0 or 1, R ^Si is each independently a univalent group containing a Si atom bonded to a hydroxyl group, a hydrolyzable group, a hydrogen atom or a univalent group, At least one R ^Si is a univalent group containing a Si atom bonded to a hydroxyl group or a hydrolyzable group, X ^A are each independently a single bond or a valence base of 2 to 10, α1 is an integer from 1 to 9, β1 is an integer from 1 to 9, γ1 is each independently an integer from 1 to 9. The surface treatment agent as claimed in claim 11, wherein in the formulas (A1) and (A2), R ^F are each independently a base represented by the following formula: -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ R ^Fa ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - In the formula: R ^Fa are each independently a hydrogen atom, a fluorine atom or a chlorine atom, a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. . The surface treatment agent as described in claim 11 or 12, wherein in formulas (A1) and (A2), Rf ¹ is a C _1-16 perfluoroalkyl group, Rf ² is C _1-6 perfluoroalkyl group, R ^F are independently the basis represented by the following formula: -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - In the formula: a, b, c, d, e and f are each independently an integer from 0 to 200. The sum of a, b, c, d, e and f is more than 1. Mark a, b, c, d, e or f The order of existence of each repeating unit enclosed in parentheses is arbitrary in the formula. However, when all R ^Fa are hydrogen atoms or chlorine atoms, at least one of a, b, c, e and f is 1 or more. . The surface treatment agent as described in any one of claims 11 to 13, wherein in the formulas (A1) and (A2), R ^F is independently the following formula (f1), (f2), (f3), The basis represented by (f4), (f5) or (f6): -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e - (f1) In the formula, d is an integer from 1 to 200, and e is 0 or 1; -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f2) In the formula, c and d are independently integers from 0 to 30, e and f are independently integers from 1 to 200, The sum of c, d, e and f is an integer from 10 to 200, The order of existence of each repeating unit marked c, d, e or f and enclosed in parentheses is arbitrary in the formula; -(R ⁶ -R ⁷ ) _g - (f3) In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups selected from these groups, g is an integer from 2 to 100; -(R ⁶ -R ⁷ ) _g -R ^r -(R ^7' -R ^6' ) _g' - (f4) In the formula, R ⁶ is OCF ₂ or OC ₂ F ₄ , R ⁷ is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups, R ^6' is OCF ₂ or OC ₂ F ₄ , R ^7' is a group selected from OC ₂ F ₄ , OC ₃ F ₆ , OC ₄ F ₈ , OC ₅ F ₁₀ and OC ₆ F ₁₂ or a combination of 2 or 3 groups independently selected from these groups, g is an integer from 2 to 100, g’ is an integer from 2 to 100, R ^r is the following formula:

In the formula, * represents the bonding position; -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f5) In the formula, e is an integer from 1 to 200, a, b, c, d and f are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary; -(OC ₆ F ₁₂ ) _a -(OC ₅ F ₁₀ ) _b -(OC ₄ F ₈ ) _c -(OC ₃ F ₆ ) _d -(OC ₂ F ₄ ) _e -(OCF ₂ ) _f - (f6) In the formula, f is an integer from 1 to 200, a, b, c, d and e are each independently an integer from 0 to 200. Label a, b, c, d, e or f and enclose it in brackets. The order of existence of each repeating unit in the formula is arbitrary. The surface treatment agent according to any one of claims 11 to 14, wherein R ^Si is a group represented by the following formula (S1), (S2), (S3), (S4) or (S5):

- SiR ¹¹ _n1 R ¹² _3-n1 (S2) - SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 (S3) - CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 (S4) - NR ^g1 R ^h1 (S5) In the formula: R ¹¹ are each independently a hydroxyl group or a hydrolyzable group, R ¹² is each independently a hydrogen atom or a monovalent organic group, n1 is an integer from 0 to 3 independently in each (SiR ¹¹ _n1 R ¹² _3-n1 ) unit, X ¹¹ is independently a single bond or a divalent base, R ¹³ is each independently a hydrogen atom or a monovalent organic group, t is independently an integer above 2, R ¹⁴ is independently a hydrogen atom, a halogen atom or -X ¹¹ -SiR ¹¹ _n1 R ¹² _3-n1 , R ¹⁵ is each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms, R ^a1 are independently -Z ¹ -SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ; Z ¹ are independently 2-valent bases, R ²¹ are independently -Z ^1' -SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ; R ²² are each independently a hydroxyl group or a hydrolyzable group, R ²³ is each independently a hydrogen atom or a monovalent organic group, p1 are independently integers from 0 to 3, q1 are independently integers from 0 to 3, r1 are independently integers from 0 to 3, The total of p1, q1 and r1 in the unit (SiR ²¹ _p1 R ²² _q1 R ²³ _r1 ) is 3, Z ^1' are independently 2-valent bases, R ^21' are independently -Z ^1” -SiR ^22” _q1” R ^23” _r1” ; R ^22' are each independently a hydroxyl group or a hydrolyzable group, R ^23' are each independently a hydrogen atom or a monovalent organic group, p1’ are independently integers from 0 to 3, q1’ are independently integers from 0 to 3, r1’ are independently integers from 0 to 3, The total of p1', q1' and r1' in the (SiR ^21' _p1' R ^22' _q1' R ^23' _r1' ) unit is 3, Z ^1” are independently 2-valent bases, R ^22″ are each independently a hydroxyl group or a hydrolyzable group, R ^23″ are each independently a hydrogen atom or a monovalent organic group, q1” are independently integers from 0 to 3, r1” are independently integers from 0 to 3, The total of q1” and r1” in the unit (SiR ^22” _q1” R ^23” _r1” ) is 3, R ^b1 are each independently a hydroxyl group or a hydrolyzable group, R ^c1 are each independently a hydrogen atom or a monovalent organic group, k1 are independently integers from 0 to 3, l1 are independently integers from 0 to 3, m1 are independently integers from 0 to 3, The total of k1, l1 and m1 in the (SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 ) unit is 3, R ^d1 are independently -Z ² -CR ³¹ _p2 R ³² _q2 R ³³ _r2 ; Z ² are independently single bond and divalent base; R ³¹ are independently -Z ^2' -CR ^32' _q2' R ^33' _r2' ; R ³² are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 , R ³³ is independently a hydrogen atom, a hydroxyl group or a monovalent organic group, p2 are independently integers from 0 to 3, q2 are independently integers from 0 to 3, r2 are independently integers from 0 to 3, The total of p2, q2 and r2 in the unit (CR ³¹ _p2 R ³² _q2 R ³³ _r2 ) is 3, Z ^2' is independently a single bond or a divalent base; R ^32' are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 , R ^33' are each independently a hydrogen atom, a hydroxyl group or a monovalent organic group, q2’ are independently integers from 0 to 3, r2’ are independently integers from 0 to 3, The total of q2' and r2' in the (CR ^32' _q2' R ^33' _r2' ) unit is 3, Z ³ is independently a single bond or a divalent base; R ³⁴ are each independently a hydroxyl group or a hydrolyzable group, R ³⁵ is each independently a hydrogen atom or a monovalent organic group, n2 are independently integers from 0 to 3, R ^e1 are each independently -Z ³ -SiR ³⁴ _n2 R ³⁵ _3-n2 , R ^f1 are each independently a hydrogen atom, a hydroxyl group or a monovalent organic group, k2 are independently integers from 0 to 3, l2 are independently integers from 0 to 3, m2 are independently integers from 0 to 3, The total of k2, l2 and m2 in the (CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 ) unit is 3, R ^g1 and R ^h1 are independently -Z ⁴ -SiR ¹¹ _n1 R ¹² _3-n1 , -Z ⁴ -SiR ^a1 _k1 R ^b1 _l1 R ^c1 _m1 or -Z ⁴ -CR ^d1 _k2 R ^e1 _l2 R ^f1 _m2 , Z ⁴ is independently a single bond or a divalent base, However, in formulas (S1), (S2), (S3), (S4) and (S5), there is at least one Si atom bonded to a hydroxyl group or a hydrolyzable group. The surface treatment agent as described in any one of claims 11 to 15, wherein α1, β1 and γ1 are 1, and X ^A is a divalent base. The surface treatment agent as described in any one of claims 11 to 16, wherein X ^A is a single bond or a divalent radical represented by the following formula: -(R ⁵¹ ) _p5 -(X ⁵¹ ) _q5 - In the formula: R ⁵¹ is a single bond, -(CH ₂ ) _s5 - or o-, m- or p-phenylene group, s5 is an integer from 1 to 20, X ⁵¹ is -(X ⁵² ) _l5 -, X ⁵² is independently selected from -O-, -S-, o-, m- or p-phenylene, -C(O)O-, -Si(R ⁵³ ) ₂ -, -(Si(R ⁵³ ) ₂ O) _m5 -The base of the group consisting of -Si(R ⁵³ ) ₂ -, -CONR ⁵⁴ -, -O-CONR ⁵⁴ -, -NR ⁵⁴ - and -(CH ₂ ) _n5 -, R ⁵³ is independently phenyl, C _1-6 alkyl or C _1-6 alkoxy, R ⁵⁴ is independently a hydrogen atom, a phenyl group or a C _1-6 alkyl group, m5 are independently integers from 1 to 100, n5 are independently integers from 1 to 20, l5 is an integer from 1 to 10, p5 is 0 or 1, q5 is 0 or 1, Here, at least one of p5 and q5 is 1, and the order of existence of the repeating units marked with p5 or q5 and enclosed in parentheses is arbitrary, The right side is bonded to R ^Si . The surface treatment agent according to any one of claims 11 to 15, wherein X ^A is a base represented by the following formula:

In the formula, X ^a is a single bond or a divalent base. The surface treatment agent according to any one of claims 10 to 18, wherein the content of the component (B) is 1 to 70% by mass relative to the total of the component (A) and the component (B). The surface treatment agent according to any one of claims 10 to 19, wherein the content of the component (B) is 1 to 40% by mass relative to the total of the component (A) and the component (B). The surface treatment agent as described in any one of claims 10 to 20, further contains one or more than one other component selected from the group consisting of fluorine-containing oil, polysiloxane oil, alcohol and catalyst. The surface treatment agent according to any one of claims 10 to 21, further containing a solvent. The surface treatment agent according to any one of claims 10 to 22, which is used as an antifouling coating agent or a waterproof coating agent. A particle containing the surface treatment agent as described in any one of claims 10 to 23. An article includes: a base material; and a layer formed on the base material by the surface treatment agent described in any one of claims 10 to 23. The article of claim 25, wherein the aforementioned substrate is a glass substrate. The article according to claim 25, which is an optical component.