JPH11140310A - Organic-inorganic polymer hybrid and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hybrid showing excellent transparency by dispersing an amphipathic polyoxazolidone block copolymer containing a hydrophilic organic polymer segment and a hydrophobic organic polymer segment uniformly dispersed in a metal oxide matrix. SOLUTION: An organic-inorganic polymer hybrid comprises a metal oxide matrix obtained by a sol-gel reaction of 10-5,000 pts.wt. of a hydrolysis- polymerizable metal compound such as a silica gel, an alumina gel, etc., and 100 pts.wt. of an amphipathic polyoxazolidone block copolymer represented by formula III uniformly dispersed in the matrix containing a hydrophilic organic polymer segment represented by formula I and a hydrophobic organic polymer segment represented by formula II (wherein R1 is a hydrogen or a 1-3C lower alkyl; R2 is an aryl, a not less than 4C long chain alkyl or a perfluoroalkyl; R3 is a divalent connecting group; and k, l, m and n are numbers of repeating units).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic-inorganic polymer hybrid, and more particularly, to an organic-inorganic polymer having excellent transparency in which an amphiphilic block copolymer is uniformly dispersed in a metal oxide matrix. Regarding hybrid. The present invention also relates to a method for producing an organic-inorganic polymer hybrid.

[0002]

2. Description of the Related Art In recent years, combinations of organic polymers and inorganic substances have been actively studied.
It has both organic and inorganic properties, and is attracting attention as a polymer composite material. In particular, an organic-inorganic polymer hybrid in which an organic polymer and an inorganic substance are combined at a molecular level is expected to have various industrial applications.

[0003] As such an organic-inorganic polymer hybrid, for example, JP-A-3-212451 discloses a method of hydrolyzing tetraalkoxysilane or the like in the presence of an amide bond-containing non-reactive polymer such as a polyoxazoline polymer. It describes that a polymerizable metal compound is hydrolyzed and polymerized to be gelled to obtain an organic-inorganic composite transparent homogeneous body in which a non-reactive polymer containing an amide bond is uniformly dispersed in a three-dimensional network structure of a metal oxide. Have been.

[0004] Japanese Patent Application Laid-Open No. 5-85860 discloses that
An organic-inorganic composite transparent homogeneous body in which a non-reactive polymer having a urethane bond or a urea bond is uniformly dispersed in an inorganic oxide matrix such as silica or alumina by a sol-gel method is described.

JP-A-5-310413 discloses a saccharide derivative having a urethane bond, a urea bond and / or an amide bond, for example, isoform of sucrose in an inorganic oxide matrix such as silica by a sol-gel method. An organic-inorganic composite transparent homogenous body in which a carbamate is uniformly dispersed is described.

As described above, the organic polymers in the organic-inorganic composites described in these publications are all hydrophilic polymers containing a hydrogen bond accepting group such as a urethane bond, a urea bond, an amide bond, and the like. It has been difficult to obtain an organic-inorganic composite in which a hydrophilic organic polymer is incorporated.

On the other hand, when a hydrophobic organic polymer is incorporated as the organic polymer in the organic-inorganic composite, characteristics that are not present in the organic-inorganic composite using the hydrophilic polymer as described in each of the above publications are exhibited. Be expected. However, it has been difficult to obtain an organic-inorganic composite in which a hydrophobic organic polymer is uniformly incorporated by a method in which an organic polymer coexists in a normal sol-gel reaction as described in each of the above publications.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide an organic-inorganic polymer hybrid (composite) in which a hydrophobic organic polymer segment is uniformly incorporated and which has excellent transparency. The object of the present invention is
An object of the present invention is to provide a method for producing an organic-inorganic polymer hybrid in which a hydrophobic organic polymer segment is uniformly incorporated.

[0009]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that an amphiphilic polyoxazoline block copolymer containing a hydrophilic organic polymer segment and a hydrophobic organic polymer segment is used as an organic polymer to form a sol. The inventors have found that an organic-inorganic polymer hybrid in which a hydrophobic organic polymer segment is uniformly dispersed in a metal oxide matrix can be obtained by performing a gel reaction, and have completed the present invention.

That is, the organic-inorganic polymer hybrid of the present invention contains a compound of the formula (1)

[0011]

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(In the formula, R ₁ represents a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms which may have a substituent.)
A hydrophilic organic polymer segment comprising a structural unit represented by the following formula:

[0013]

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(Wherein R ₂ represents an aryl group which may have a substituent, a long-chain alkyl group having 4 or more carbon atoms, or a perfluoroalkyl group). An amphiphilic polyoxazoline block copolymer containing a polymer segment is uniformly dispersed.

It is known that amphiphilic block copolymers form various forms of aggregates depending on the environment in which they exist, and that organic polymers form interesting hydrophobic domains in a metal oxide matrix. There is expected.

Further, the method for producing an organic-inorganic polymer hybrid of the present invention comprises hydrolyzing and polymerizing a hydrolyzable polymerizable metal compound in the presence of an amphiphilic block copolymer.

In this specification, the term "organic-inorganic polymer hybrid" is used to mean any of a sol, a wet gel, and a dry gel. Hereinafter, the present invention will be described in detail.

The matrix of the metal oxide in the organic-inorganic polymer hybrid of the present invention can be obtained by a sol-gel reaction of a hydrolyzable polymerizable metal compound. The hydrolysis-polymerizable metal compound is a metal compound having a hydrolyzable organic group. The metal contained in such a metal compound is not particularly limited, and 2
Metals having a valency or higher, such as alkaline earth metals, transition metals, rare earth metals, and metals belonging to Groups III to V of the periodic table. Preferred metals are generally those of Group IIIb or I of the Periodic Table.
Examples of metals belonging to Group V include metals belonging to Group IIIb, such as Al, and examples of metals belonging to Group IV include Ti, Zr, etc. belonging to Group IVa, and Si, etc. belonging to Group IVb. Among these metals, Al and Si are preferable, and the matrix of the metal oxide is silica gel and / or
Alternatively, an organic-inorganic polymer hybrid which is an alumina gel is obtained. In the present invention, Si is particularly preferred.

The hydrolyzable organic group contained in the hydrolyzable polymerizable metal compound is not particularly limited. For example, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, pentyloxy, hexyl And alkoxy groups such as oxy. Of these, a lower alkoxy group having 1 to 4 carbon atoms is preferable, and methoxy, ethoxy, propoxy and the like are particularly preferable. The hydrolyzable polymerizable metal compound has at least two hydrolyzable organic groups for hydrolytic polymerization.

As the hydrolysis-polymerizable metal compound containing Al, for example, trimethoxyaluminum, triethoxyaluminum, tripropoxyaluminum and the like can be mentioned. Examples of the hydrolytic polymerizable metal compound containing Ti include, for example, trimethoxytitanium, tetramethoxytitanium, triethoxytitanium, tetraethoxytitanium, tetrapropoxytitanium, chlorotrimethoxytitanium, chlorotriethoxytitanium, ethyltrimethoxytitanium, methyl Triethoxy titanium, ethyl triethoxy titanium,
Examples thereof include diethyldiethoxytitanium, phenyltrimethoxytitanium, and phenyltriethoxytitanium. Z
Examples of the hydrolyzable polymerizable metal compound containing r include zirconates respectively corresponding to the above titanates.

The hydrolytic polymerizable metal compound containing Si is a silicon compound and can be suitably used in the present invention. This silicon compound is represented by the following formula (4). (R ₁₁ ) _n Si (OR ₁₂ ) _4-n (4) In this formula, R ₁₁ represents a lower alkyl group which may have a substituent or an aryl group which may have a substituent; R ₁₂ represents a lower alkyl group, and R ₁₁ and R ₁₂ represent n
May be different. n represents an integer of 0 or 1. The lower alkyl group represented by R ₁₁ and R ₁₂ is usually an alkyl group having about 1 to 4 carbon atoms, and examples thereof include a methyl, ethyl, propyl, isopropyl, butyl, isobutyl, and sec-butyl group.

Specific examples of such a silicon compound include, for example, trimethoxysilane, triethoxysilane, tripropoxysilane, tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, Propyltrimethoxysilane, methyltriethoxysilane,
Ethyltriethoxysilane, propyltriethoxysilane, γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltripropoxysilane, and the like.

Among these silicon compounds, preferred are, for example, tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltrimethoxysilane, Phenyltriethoxysilane and the like can be mentioned.

In the present invention, in addition to the above-mentioned silicon compound, if necessary, in order to adjust the hardness and flexibility of the gelled hybrid, n =
It is also possible to use two silicon compounds. As such, for example, dimethyldimethoxysilane,
Dimethyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane and the like can be mentioned.

These hydrolysis-polymerizable metal compounds may be partially polymerized. As the hydrolysis-polymerizable metal compound, only one kind may be used, or two or more kinds may be used in combination.

In the present invention, the amphiphilic polyoxazoline block copolymer comprises a hydrophilic organic polymer segment (hydrophilic polyoxazoline) comprising the structural unit represented by the formula (1) and a structural unit represented by the formula (2) It is a block copolymer containing a hydrophobic organic polymer segment (hydrophobic polyoxazoline) composed of units.

[0027]

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[0028]

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In the formula (1), R ₁ represents a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms which may have a substituent. Specific examples of the lower alkyl group represented by R ₁ include a methyl, ethyl, propyl, and isopropyl group. Methyl and ethyl groups are preferred because of their low hydrophobicity. As the number of carbon atoms in the alkyl group increases, the hydrophobicity increases. Examples of the substituent which the lower alkyl group represented by R ₁ may have include, for example, a lower alkoxy group having about 1 to 3 carbon atoms, a lower alkoxycarbonyl group, and the like.

This hydrophilic polyoxazoline can be obtained by ring-opening polymerization of the corresponding oxazoline. As the oxazoline, specifically, 2-oxazoline, 2-oxazoline
Methyl-2-oxazoline, 2-ethyl-2-oxazoline, 2-propyl-2-oxazoline, 2-isopropyl-2-oxazoline. Of these,
Preferred are 2-oxazoline, 2-methyl-2-
Oxazoline and 2-ethyl-2-oxazoline.

In addition to the hydrophilic polyoxazoline segment comprising the structural unit represented by the formula (1), poly (N
-Vinylpyrrolidone), and a hydrophilic segment such as poly (N, N-dimethylacrylamide) may be contained within a range not to impair the object of the present invention.

In the above formula (2), R ₂ represents an aryl group which may have a substituent, a long-chain alkyl group having 4 or more carbon atoms, or a perfluoroalkyl group. Examples of the aryl group represented by R ₂ include a phenyl and naphthyl group. Examples of the substituent that the aryl group may have include, for example, halogen atoms such as fluorine, chlorine, and bromine, a hydroxyl group, a carboxyl group, an alkyl group, an alkoxy group, and an alkoxycarbonyl group. Care must be taken because the introduction of a hydroxyl group or a carboxyl group weakens the hydrophobicity.

Examples of the long-chain alkyl group having 4 or more carbon atoms represented by R ₂ include butyl, isobutyl, sec-butyl,
t-butyl, hexyl, decyl, dodecyl groups and the like. Among these, from the viewpoint of hydrophobicity, the number of carbon atoms is 6 to 12.
A degree of alkyl group is preferred. Further, the aryl group may have the same substituent as the substituent which the aryl group may have. Examples of the perfluoroalkyl group represented by R ₂ include a trifluoromethyl group and a trifluoroethyl group.

This hydrophobic polyoxazoline can also be obtained by ring-opening polymerization of the corresponding oxazoline as in the case of hydrophilic polyoxazoline. Specific examples of oxazolines include, for example, 2-phenyl-2-oxazoline, 2-p-toluyl-2-oxazoline, 2-butyl-
2-oxazoline, 2-decyl-2-oxazoline, 2
-Trifluoromethyl-2-oxazoline and the like.

As a special case of the block copolymer containing the hydrophilic polyoxazoline and the hydrophobic polyoxazoline, there is an amphiphilic polyoxazoline block copolymer represented by the formula (3).

[0036]

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[0037] Equation (3), R ₁ is the same meaning as R ₁ in the above (1), R ₂ is R in the formula (2)
It has the same meaning as ₂ , and R ₃ represents a divalent linking group. k, l,
m and n represent the number of repeating units. The divalent linking group represented by R ₃ is derived from the initiator of the ring-opening polymerization of oxazoline. For example, when p-dibromoxylene is used as the initiator, it becomes a p-xylylene group. Similarly, as a divalent linking group, m-xylylene group, o-xylylene group, ethylene group, propylene group, butylene group,-
CH ₂ CH = CHCH ₂ - (derived from 1,4-dibromo-2-butene), and the like. Of course, it is not limited only to these.

The amphiphilic polyoxazoline block copolymer represented by the formula (3) can be synthesized, for example, according to the following scheme. R ₃ represents the case of a p-xylylene group.

[0039]

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Starting from p-dibromoxylene, 2
Ring-opening polymerization of an oxazoline having a substituent R ₂ at
A living polymer (5) into which a hydrophobic organic polymer segment is introduced is obtained. Subsequently, the substituent R ₁ is further substituted at the 2-position.
Is subjected to ring-opening polymerization to obtain a polymer (6) into which a hydrophilic organic polymer segment is introduced, and hydrolyze the polymer growing terminal. Thus, the amphiphilic polyoxazoline block copolymer (3) can be synthesized.

In the organic-inorganic polymer hybrid of the present invention, although it differs depending on the type of the amphiphilic polyoxazoline block copolymer or the metal oxide, generally, it is 1%.
00 parts by weight of the amphiphilic polyoxazoline block copolymer is 10 to 5000 as the hydrolyzable polymerizable metal compound.
It is preferably dispersed in parts by weight of a metal oxide matrix. With such a weight ratio, the amphiphilic polyoxazoline block copolymer is uniformly dispersed in the metal oxide matrix, and the transparency and homogeneity of the organic-inorganic polymer hybrid can be secured. A more preferable ratio is 50 to 2,000 parts by weight of a metal oxide matrix as a hydrolyzable polymerizable metal compound based on 100 parts by weight of the amphiphilic block copolymer.

The organic-inorganic polymer hybrid of the present invention may contain, if necessary, various kinds of known plasticizers, antioxidants, ultraviolet absorbers, antistatic agents, flame retardants, coloring agents, surfactants and the like. It is also possible to add additives.

Next, a method for producing the organic-inorganic polymer hybrid of the present invention will be described. The method for producing the organic-inorganic polymer hybrid of the present invention is not particularly limited, but usually it is desirable to produce it using a sol-gel method.

That is, the method for producing an organic-inorganic polymer hybrid of the present invention comprises hydrolyzing and polymerizing a hydrolyzable polymerizable metal compound in the presence of the above-mentioned amphiphilic polyoxazoline block copolymer. By this sol-gel method, an organic-inorganic hybrid in which an amphiphilic polyoxazoline block copolymer is uniformly dispersed in a metal oxide matrix formed by hydrolysis polymerization of a hydrolysis-polymerizable metal compound is obtained. Can be.

This hydrolysis polymerization reaction can be carried out under the same operation and conditions as in the conventional sol-gel method. For example, the reaction is carried out by dissolving the amphiphilic polyoxazoline block copolymer and the hydrolysis-polymerizable metal compound in an appropriate good solvent to form a homogeneous solution, dropping an appropriate acid catalyst into the solution, and stirring the solution. It can be carried out.

Examples of such a solvent include water;
Alcohols such as methanol, ethanol, propanol, isopropanol, and butanol; ethers such as diethyl ether, dioxane, dimethoxyethane, and tetrahydrofuran; N-methylpyrrolidone, acetonitrile, dimethylformamide, dimethylacetamide, dimethylsulfoxide, acetone, benzene, and the like. Can be Any of these may be appropriately selected in consideration of the hydrophilicity / hydrophobicity of the amphiphilic polyoxazoline block copolymer. Alternatively, a mixed solvent thereof can be used.

Examples of the acid catalyst include inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid; formic acid, acetic acid, trichloroacetic acid, trifluoroacetic acid, propionic acid, methanesulfonic acid, ethanesulfonic acid and p-toluene. Organic acids such as sulfonic acid are exemplified.

Although the hydrolysis polymerization reaction depends on the reactivity of the hydrolysis-polymerizable metal compound, it can be generally carried out at room temperature, and is carried out at a temperature of about 0 to 150 ° C., preferably at room temperature to 50 ° C.
It can be performed at a temperature of about ° C. The reaction time may be appropriately determined depending on the reaction temperature, but is about 1 to 240 hours. The reaction may be performed in an inert atmosphere such as nitrogen gas, or may be performed under reduced pressure of about 0.5 to 1 atm while removing the alcohol generated in the polymerization reaction.

The organic-inorganic polymer hybrid of the present invention can be obtained by such a method. In the sol-gel reaction, the amphiphilic block copolymer and the metal oxide do not undergo phase separation through the sol state and the gel state, and maintain a uniform transparent state. This is considered to be because the hydrogen bond accepting group of the hydrophilic organic polymer segment of the amphiphilic polyoxazoline block copolymer and the hydroxyl group of the metal oxide formed by hydrolysis polymerization form a hydrogen bond.

The organic-inorganic polymer hybrid of the present invention is excellent in uniformity and transparency, and can be applied to various uses in which characteristics of both the organic component and the inorganic component are desired to be exhibited. For example, application to a fiber, a coating film, a film, a sheet, a sphere, a rod, and the like can be considered. This molding may be performed according to a known molding method according to various purposes, such as a casting method, a coating method, an extrusion molding method, a press molding method,
It is appropriately selected from a centrifugal molding method, a casting molding method, and the like.

Further, the amphiphilic block copolymer is removed from the obtained various molded products by solvent extraction or calcination.
It is also possible to convert to an inorganic porous body. The inorganic porous material can be used as a filter, a catalyst carrier, an adsorbent, and the like.

[0052]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. (Synthesis example of amphiphilic polyoxazoline block copolymer) According to the above-described scheme, p-dibromoxylene was used as an initiator, poly (2-methyloxazoline) was used as a hydrophilic organic polymer segment, and poly (2-methyloxazoline) was used as a hydrophobic organic polymer segment. 2-phenyloxazoline) and an amphiphilic block copolymer (7) were synthesized.

[0053]

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164 mg of p-dibromoxylene (0.6
21 mmol) and 2-phenyloxazoline 3.16
g (21.5 mmol) was stirred at 80 ° C. for 48 hours and subjected to ring-opening polymerization to obtain a living polymer. Furthermore, 3.38 g (39.7 mmol) of 2-methyloxazoline was added to the reaction system.
1) was added and stirred at 80 ° C. for 24 hours to effect ring-opening polymerization. Thereafter, 0.5 cc of water was added to the reaction system to stop the reaction. The obtained block copolymer (7) is ¹ H-
As a result of NMR analysis, the degree of polymerization of poly (2-phenyloxazoline) was m + n = 18.3, and the degree of polymerization of poly (2-methyloxazoline) was k + 1 = 26.5.

[Example] Under a nitrogen gas atmosphere, 100 parts by weight of the block copolymer (7) was dissolved in distilled ethanol and stirred for 10 minutes. To this, 1100 parts by weight of tetraethoxysilane (TEOS) was added and stirred for 10 minutes. Subsequently, one drop of 0.1N HCl aqueous solution was added, and the mixture was stirred for 1 hour to obtain a uniform sol-gel reaction solution. This solution was kept in a desiccator at 50 ° C. for 7 days,
A gel reaction was performed to obtain an organic-inorganic hybrid. Next, with respect to 100 parts by weight of the block copolymer (7), tetraethoxysilane was added to each of 360 parts by weight and 210 parts by weight.
A sol-gel reaction was carried out in the same manner except for using 120 parts by weight, 50 parts by weight, and an organic-inorganic hybrid was obtained.

Comparative Example Poly (2-methyloxazoline) having a degree of polymerization of 11 and poly (2-phenyloxazoline) having a degree of polymerization of 5.6 were obtained by mixing the poly (2-methyloxazoline) in the block copolymer (7) with the poly (2-methyloxazoline). ) And poly (2-phenyloxazoline). With respect to 100 parts by weight of this homopolymer blend, tetraethoxysilane was used in the same manner as in Example except that 1100 parts by weight and 400 parts by weight were used, respectively.
A sol-gel reaction was performed to obtain an organic-inorganic hybrid.

The appearance of each of the obtained organic-inorganic hybrids was visually observed. Table 1 shows the results.

[0058]

[Table 1]

From Table 1, it can be seen that the block copolymer (7) 100
With respect to parts by weight, when only 50 parts by weight of tetraethoxysilane was used, slight turbidity was observed in the organic-inorganic hybrid, but when 120 parts by weight of tetraethoxysilane was used, completely transparent and uniform An organic-inorganic hybrid was obtained. As described above, it was possible to uniformly disperse approximately the same amount of the block copolymer in tetraethoxysilane to be a matrix.

On the other hand, in the case of the homopolymer blend having the same component ratio as that of the block copolymer (7), even if 400 parts by weight of tetraethoxysilane is used with respect to 100 parts by weight of the homopolymer blend, a transparent and uniform material is obtained. No hybrid was obtained.

From this, it is apparent that polyphenyloxazoline is converted to block copolymer (7) with polymethyloxazoline.
By doing so, the polyphenyloxazoline segment is successfully incorporated into the silica gel matrix,
That a transparent uniform organic-inorganic hybrid was obtained,
it is obvious.

[0062]

According to the organic-inorganic polymer hybrid of the present invention, since it is constituted as described above, the hydrophobic organic polymer segment of the amphiphilic polyoxazoline block copolymer is uniformly formed in the metal oxide matrix. And is excellent in homogeneity and transparency. According to the production method of the present invention, an organic-inorganic polymer hybrid having excellent homogeneity and transparency can be produced by a simple operation of hydrolysis polymerization.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Osamu Hamada, Inventor Osamu Yoshida-cho, Sakyo-ku, Kyoto City Yoshida Dormitory, Kyoto University

Claims (6)

[Claims] In a matrix of a metal oxide, a compound represented by the formula (1): (In the formula, R ₁ represents a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms which may have a substituent.) A hydrophilic organic polymer segment comprising a structural unit represented by the following formula: Embedded image (Wherein, R ₂ represents an aryl group which may have a substituent,
Represents a long-chain alkyl group or a perfluoroalkyl group having 4 or more carbon atoms. An organic-inorganic polymer hybrid in which an amphiphilic polyoxazoline block copolymer containing a hydrophobic organic polymer segment comprising a constitutional unit represented by the formula (1) is uniformly dispersed. 2. The organic-inorganic polymer hybrid according to claim 1, wherein the metal oxide matrix is obtained by a sol-gel reaction of a hydrolysis-polymerizable metal compound. 3. The organic-inorganic polymer hybrid according to claim 1, wherein the metal oxide matrix is silica gel and / or alumina gel. 4. An amphiphilic polyoxazoline block copolymer represented by the formula (3): (Wherein, R ₁ represents a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms which may have a substituent; R ₂ represents an aryl group optionally having a substituent; Represents a long-chain alkyl group or a perfluoroalkyl group, R ₃ represents a divalent linking group, and k, l, m, and n represent the number of repeating units.) Claim 1
4. The organic-inorganic polymer hybrid according to any one of items 3 to 3. 5. The method according to claim 2, wherein 100 parts by weight of the amphiphilic polyoxazoline block copolymer is dispersed as a hydrolytic polymerizable metal compound in 10 to 5000 parts by weight of a metal oxide matrix. The organic-inorganic polymer hybrid according to any one of the above. 6. A method for producing an organic-inorganic polymer hybrid, comprising hydrolyzing and polymerizing a hydrolysis-polymerizable metal compound in the presence of an amphiphilic polyoxazoline block copolymer.