JP2003082288A - Stain-resistant coating material composition for wall paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stain-resistant coating material composition excellent in stain-resistant properties and processability. SOLUTION: This stain-resistant coating material composition for wall paper comprises a synthetic resin emulsion (A), a wax (B) and an inorganic filler (C). The glass transition temperature (average Tg) of (A) is 20-60 deg.C. The lowest membrane forming temperature (abbreviated as MFT) is <=20 deg.C. The (A) has a core-shell structure. The Tg of the core part is 40-150 deg.C. The Tg of the shell part is -30-10 deg.C.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an antifouling coating composition for wallpaper. More specifically, it relates to an antifouling coating agent composition for wallpaper which is excellent in antifouling property, blocking property and workability.

[0002]

2. Description of the Related Art Conventionally, as a means for imparting antifouling property to wallpaper, a method of applying a synthetic resin emulsion having antifouling property has been known. Examples of such a method include:
A method of coating a fluorine-containing emulsion obtained by copolymerizing a monomer having a water- and oil-repellent fluoroalkyl group (JP-A-3-269184, JP-A-11-
No. 172190), a method of applying a synthetic resin emulsion in which a polyorganosiloxane and an acrylic resin are composited (JP-A-8-151550), and a method of applying an aqueous dispersion of an ethylene-vinyl alcohol copolymer (JP-A-6-151550).
No. 57692), a method of applying a vinyl resin emulsion and a melamine resin and crosslinking them (Patent No. 85698).
Etc.

However, it is difficult to synthesize a stable emulsion in the above-mentioned fluorine-containing emulsion because the monomer containing a fluoroalkyl group is hydrophobic, and the obtained emulsion is poor in mechanical stability and long-term stability. There is a drawback that it is extremely difficult to obtain practical physical properties, such as the need for heat treatment at high temperature due to poor film forming properties.

The synthetic resin emulsion in which polyorganosiloxane is complexed and the aqueous dispersion of ethylene-vinyl alcohol copolymer have a drawback that the polymerization method is extremely complicated and it is difficult to obtain a stable emulsion.

In addition, in the method of forming a crosslinked coating film with a melamine resin, although some degree of antifouling property can be expressed by crosslinking, there is a problem of generation of formalin, which is one of the causative substances of "sick house syndrome". However, it is not practical.

Further, in particular, in a paper wallpaper using paper as a decorative paper, the pot life is short when the wall is coated with a construction glue, or the joint gap is likely to appear after the construction. It had drawbacks and it was extremely difficult to obtain a practical paper wallpaper.

[0007]

Accordingly, an object of the present invention is to provide an antifouling coating agent composition for wallpaper, particularly paper wallpaper, which is excellent in antifouling property and also in construction workability. With the goal.

[0008]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a synthetic resin composition containing a specific synthetic resin emulsion has not only antifouling properties but also They have found that the blocking property and further the workability can be greatly improved, and have completed the present invention.

That is, in the present invention, the synthetic resin emulsion (A) has an average glass transition temperature (average Tg) of 20 to 60.
C., the minimum film-forming temperature (abbreviation: MFT) of the emulsion (A) is 20 ° C. or less, the emulsion (A) has a core-shell structure, and the Tg of the core portion is 40 to 150. And the Tg of the shell is -30 to
It relates to an antifouling coating agent composition for wallpaper, which is at 10 ° C.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, necessary items for carrying out the present invention will be specifically described below.

The synthetic resin emulsion (A) used in the present invention is a synthetic resin emulsion obtained by emulsion-polymerizing an ethylenically unsaturated monomer, and particularly, emulsion-polymerizing in the presence of a reactive emulsifier. The resulting substantially soap-free synthetic resin emulsion is preferred.

Examples of the ethylenically unsaturated monomer include
For example, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, (meth)
I-Propyl acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, t-butyl (meth) acrylate, n-amyl (meth) acrylate, i-amyl (meth) acrylate N-hexyl (meth) acrylate, cyclohexyl (meth) acrylate, (meth)
N-heptyl acrylate, 2-ethylhexyl (meth) acrylate, octyl (meth) acrylate, i-nonyl (meth) acrylate, t-butylcyclohexyl (meth) acrylate, decyl (meth) acrylate, (meth ) Dodecyl acrylate, alkyl (meth) acrylates such as stearyl (meth) acrylate; aliphatic conjugated dienes such as 1,2-butadiene, 1,3-butadiene, isoprene, chloroprene; styrene, α-methyl Ethylenically unsaturated aromatic monomers such as styrene, vinyltoluene, chlorostyrene and 2,4-dibromostyrene; ethylenically unsaturated nitriles such as acrylonitrile and methacrylonitrile; acrylic acid, methacrylic acid, crotonic acid, Ethylenic acid such as maleic acid and its anhydride, fumaric acid and itaconic acid Saturated carboxylic acids; monomethyl maleate, monoethyl fumarate, unsaturated dicarboxylic acid monoalkyl esters and itaconic acid mono n- butyl, vinyl acetate, vinyl esters such as vinyl propionate;
Vinylidene halides such as vinylidene chloride and vinylidene bromide; 2-hydroxyethyl (meth) acrylate,
Hydroxyalkyl esters of ethylenically unsaturated carboxylic acids such as 2-hydroxypropyl (meth) acrylate; glycidyl esters of ethylenically unsaturated carboxylic acids such as glycidyl (meth) acrylate; (meth) acrylamide, N-methylol ( (Meth) acrylamide, N-
Examples thereof include radically polymerizable monomers such as butoxymethyl (meth) acrylamide and diacetone acryl amide.

The term "(meth) acrylic acid" as used in the present invention means both methacrylic acid and acrylic acid, unless otherwise specified.

As the emulsifier used for producing the synthetic resin emulsion (A) used in the present invention, any conventionally known emulsifier can be used, but the reactive emulsifier is particularly preferable in the present invention. Examples of such reactive emulsifiers include -SO3X group, -SO3NH4 group, -O.
SO3X group, -OSO3NH4 group (X is an alkali metal, preferably Na or K), or at least one hydrophilic group selected from ethylene oxide chains,
Examples of the emulsifier having a polymerizable ethylenically unsaturated group include, for example, sodium styrenesulfonate, sodium vinylsulfonate, Latemur S-180A (manufactured by Kao Corporation), Eleminol JS-2 (manufactured by Sanyo Kasei Co., Ltd.). ), Aqualon H
S-10, HS-1025 (manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.),
ADEKA RIASOAP SE-10N (manufactured by Asahi Denka Co., Ltd.),
Japanese Patent Publication No. 49-46291 and Japanese Patent Laid-Open No. 54-144.
317, JP-A-55-115419, JP-A-58-203960, and JP-A-62-34947.
JP-A-62-104802 and JP-A-4-104802.
Examples thereof include compounds described in Japanese Patent No. 53802.

The amount of these reactive emulsifiers used is the total amount of the ethylenically unsaturated monomers in consideration of the chemical stability, mechanical stability, antifouling property and workability of the synthetic resin emulsion (A). The amount is preferably 0.5 to 5 parts by weight with respect to 100 parts by weight.

Further, without using an emulsifier, the skeleton of the synthetic resin contains a carboxyl group, a —SO3X group and a —SO3NH4 group.
Group, -OSO3X group, -OSO3NH4 group (X is an alkali metal, preferably Na or K), anionic group, cationic group such as quaternary ammonium salt group, nonionic group such as ethylene oxide chain The self-emulsifying type synthetic resin aqueous dispersion containing the functional group can also be used as a dispersant. As the synthetic resin aqueous dispersion, a soap-free type synthetic resin emulsion or water-soluble polymer obtained by using the ethylenically unsaturated carboxylic acid, reactive emulsifier and the like as essential components, or an aqueous polyester resin, an aqueous urethane resin, an aqueous solution Examples thereof include polyamide resin and water-based epoxy resin.

In the synthetic resin emulsion (A) used in the present invention, other emulsifiers can be used in combination within the range not impairing the effects of the present invention. Examples of such emulsifiers include conventionally known anionic surfactants, nonionic surfactants, cationic surfactants and amphoteric surfactants. For example, as anionic surfactants, Nonionic surfactants such as polyoxyethylene alkyl ether sulphate, polyoxyethylene alkyl ethers and the like, cationic surfactants such as alkyltrimethylammonium chloride, and zwitterionic surfactants such as alkyl Examples include betaine.

The synthetic resin emulsion (A) used in the present invention can be produced under conventionally known polymerization conditions, for example, in the presence of the emulsifier and the free-radical generating catalyst, the above-mentioned monomer 40 to 8 body mixture
It can be obtained by thermal polymerization or redox polymerization at 0 ° C. Examples of the free radical generating catalyst include potassium persulfate (K2S2O8), sodium persulfate (Na2S2O8), and ammonium persulfate ((NH4)).
2S2O8), an aqueous catalyst such as hydrogen peroxide solution, an oily catalyst such as t-butyl hydroperoxide, cumene hydroperoxide, etc. can be used, and in some cases, acidic sodium sulfite, rongalit, L-ascorbine can be used for these catalysts. Redox polymerization can also be carried out by using a reducing agent such as an acid or an amine together.

The synthetic resin emulsion (A) used in the present invention preferably has an average Tg in the range of 20 to 60 ° C and an MFT of preferably 20 ° C or less. It is preferable that the average Tg and the MFT satisfy these conditions at the same time, and under these conditions, excellent antifouling property, blocking property and workability can be obtained.

As the synthetic resin emulsion (A) having a high Tg and a low MFT used in the present invention, an emulsion having a "core shell structure" is particularly preferable, in which case the Tg of the core portion is 40 to 150 ° C, and , T of shell
It is particularly preferable that g is -30 to 10 ° C.

The synthetic resin emulsion (A) having such a core-shell structure may be produced by any conventionally known method. For example, among the ethylenically unsaturated monomers, the hydrophobic monomer forming the core portion is used. After emulsion-polymerizing mainly, the method of subsequently emulsion-polymerizing the hydrophilic monomer forming the shell portion, or conversely after emulsion-polymerizing the hydrophilic monomer forming the shell portion, the core portion Examples thereof include a method of emulsion-polymerizing the hydrophobic monomer to be formed.

In the present invention, the solid content ratio of the core portion and the shell portion is preferably core portion / shell portion = 20 /
80 to 80/20 parts by weight. When the solid content ratio of the core part and the shell part is within such a range, excellent antifouling property, blocking property and workability can be obtained.

As the ethylenically unsaturated monomer forming the core part and the shell part, the above-mentioned ethylenically unsaturated monomers can be used in any combination within the range of Tg. In the invention, it is particularly preferable from the viewpoint of matting effect that the ethylenically unsaturated monomer is selected so that the core portion and the shell portion are substantially incompatible with each other.

The particle size of the synthetic resin emulsion (A) used in the present invention is preferably 0.5 μm or less, more preferably 0.3 μm or less. When the particle size of the synthetic resin emulsion (A) is within such a range, excellent antifouling property, blocking property and workability can be obtained.

The antifouling coating agent composition for wallpaper of the present invention may further contain a wax (B).

The wax (B) used in the present invention is preferably a crystalline paraffin wax which has been separated and purified from petroleum, and is preferably used with an emulsifier or a water-soluble or water-dispersible resin. It is preferably used and emulsified and dispersed in water.

The wax (B) used in the present invention preferably contains 90% by weight or more of normal paraffin.
By using a wax having such a purity, excellent antifouling property can be obtained.

The wax (B) used in the present invention
Is preferably a paraffin wax having a melting point of 50 to 80 ° C. When the melting point of the wax (B) is in such a range, the wax is deposited on the surface of the protective film of the present invention and exhibits sufficient antifouling property, which is preferable.

The amount of the wax (B) used in the present invention is such that the total solid content of the synthetic resin emulsion (A) is 100.
It is preferably in the range of 3 to 50 parts by weight with respect to the solid content relative to the parts by weight. When the amount of the wax (B) used is in such a range, excellent antifouling property, adhesiveness with the substrate, and workability can be obtained.

In the present invention, as a method for combining the wax (B) and the synthetic resin emulsion (A), the wax (B) may be mixed with the synthetic resin emulsion (A) as an emulsified dispersion and used. Alternatively, a method of emulsion-polymerizing the synthetic resin emulsion (A) in the presence of the wax (B) during the emulsion-polymerization may be used, and the method is not particularly limited.

Further, the antifouling coating agent composition for wallpaper of the present invention preferably contains an inorganic filler (C) in addition to the above (A) and (B).

Examples of the inorganic filler (C) used in the present invention include calcium carbonate, aluminum hydroxide, titanium oxide, clay, talc, kaolin, silicon dioxide and the like, and these may be used alone or in combination. it can.

The average particle size of the inorganic filler (C) used in the present invention is preferably in the range of 1 to 20 μm from the viewpoint of compounding stability, coating property, antifouling property, workability and the like.

The amount of the inorganic filler (C) used in the present invention is preferably 5 to 200 parts by weight based on 100 parts by weight of the total solid content of the synthetic resin emulsion (A). When the amount of the inorganic filler (C) used is in such a range, it is possible to obtain a good matting effect and excellent coatability, antifouling property and workability.

The antifouling coating agent composition for wallpaper of the present invention is a composition containing a synthetic resin emulsion (A), a wax (B) and an inorganic filler (C). The average Tg is in the range of 20 to 60 ° C.,
And the minimum film forming temperature (MFT) of (A) is 20 ° C. or lower, the Tg of the core portion of (A) is 40 to 150 ° C.,
Further, the Tg of the shell portion is -30 to 10 ° C, the wax (B) is a paraffin wax having a melting point of 50 to 80 ° C, and the inorganic filler (C) is calcium carbonate, aluminum hydroxide, titanium oxide, clay. An antifouling coating agent composition for wallpaper, which is at least one selected from the group consisting of talc, kaolin, and silicon dioxide.

The antifouling coating agent composition for wallpaper of the present invention comprises
Further, if necessary, an aqueous pigment, a wetting agent, a defoaming agent, a thickener, a dispersant for an inorganic filler, and the like can be added.

The antifouling coating agent composition for wallpaper of the present invention is used by being applied to wallpaper base materials such as vinyl chloride, paper, non-woven fabric and woven fabric.

The method for applying the antifouling coating agent composition for wallpaper of the present invention is not particularly limited and can be appropriately selected according to the substrate to be applied. For example, a gravure coater, a bar coater, a blade coater. Coating with various coaters such as a roll coater, an air knife coater, a screen coater and a curtain coater can be mentioned.

The coating amount of the antifouling coating agent composition for wallpaper of the present invention is preferably 5 to 80 g / m ^{2 in} terms of solid content.
And more preferably in the range of 15 to 70 g / m ² . When the coating amount is in such a range, excellent antifouling property and workability can be obtained.

As a drying method after applying the antifouling coating agent composition of the present invention, a conventionally known method can be used and is not particularly limited. Among them, hot air drying is preferable, and the drying temperature is Usually, it is preferably in the range of 50 to 150 ° C, more preferably in the range of 80 to 140 ° C. The drying time can be appropriately set, but usually, a sufficient time for completely drying to at least 1 minute or more,
To be dried.

As described above, the aspect of the present invention is the antifouling coating agent composition for wallpaper containing the synthetic resin emulsion (A), and the average glass transition temperature (average Tg) of the synthetic resin emulsion (A). ) Is in the range of 20 to 60 ° C., and the minimum film forming temperature (abbreviation: MFT) of the emulsion (A) is 20 ° C. or lower. Is.

As another aspect of the present invention,
The synthetic resin emulsion (A) has a core-shell structure,
The present invention relates to the above antifouling coating agent composition for wallpaper, in which the Tg of the core part is 40 to 150 ° C and the Tg of the shell part is -30 to 10 ° C.

As another aspect of the present invention,
Further, the present invention relates to the above antifouling coating composition for wallpaper containing the wax (B).

As another aspect of the present invention,
The wax (B) is a paraffin wax having a melting point of 50 to 80 ° C. and is related to the above antifouling coating agent composition for wallpaper.

According to another aspect of the present invention,
Furthermore, the present invention relates to the above-mentioned antifouling coating agent composition for wallpaper containing an inorganic filler (C).

As another aspect of the present invention,
An antifouling coating agent composition for wallpaper containing a synthetic resin emulsion (A), a wax (B) and an inorganic filler (C), wherein the synthetic resin emulsion (A) has an average Tg of 20 to 20.
It is in the range of 60 ° C and the minimum film forming temperature (MF) of (A)
T) is 20 ° C. or lower, and Tg of the core portion of (A) is 4
0 to 150 ° C., and Tg of the shell part is −30 to
The wax (B) is a paraffin wax having a melting point of 50 to 80 ° C., and the inorganic filler (C) is selected from calcium carbonate, aluminum hydroxide, titanium oxide, clay, talc, kaolin, and silicon dioxide. The present invention relates to at least one antifouling coating composition for wallpaper.

[0047]

EXAMPLES The present invention will be described in more detail below with reference to Examples and Comparative Examples, but the present invention is not limited thereto. Unless otherwise specified, "part" and "%" in the examples mean "part by weight" and "% by weight", respectively.
The various properties of the antifouling wallpaper obtained using the antifouling coating agent composition for wallpaper of the present invention were evaluated by the methods outlined below.

[Synthesis Example 1 of Synthetic Resin Emulsion] A polymerization vessel equipped with a stirrer was charged with 420 parts of ion-exchanged water, and the inside of the reaction vessel was stirred for 8 hours while feeding nitrogen gas.
The temperature was raised to 0 ° C. After the temperature was raised, the following monomer emulsion (a-
1) and the aqueous initiator solution were dropped into the reaction vessel to carry out polymerization. The dropping time was 2 hours for the monomer emulsion (a-1) and 4.5 hours for the aqueous initiator solution. After the addition of the monomer emulsion (a-1) was completed, the monomer mixture (a-2) was subsequently added dropwise and the polymerization was completed while maintaining 80 ° C. After completion of the polymerization, the pH was adjusted with aqueous ammonia to obtain a synthetic resin emulsion having a solid content of 45% and a pH of 8.5 (average calculation Tg: 23 ° C., hereinafter referred to as emulsion A-1). The compounding composition is shown in Table 1. Polymerization composition of monomer emulsion (a-1); calculation Tg =
-6 ° C (shell part) 2-ethylhexyl acrylate 170 parts Methyl methacrylate 125 parts 80% Methacrylic acid 6.25 parts Lauryl mercaptan 1.5 parts Eleminol JS-2 (manufactured by Sanyo Kasei Co., Ltd.) 10 parts Ion-exchanged water 100 parts Polymerization composition of monomer mixture (a-2); Calculation Tg =
81 ° C (core part) Styrene 185 parts 2-Ethylhexyl acrylate 15 parts Initiator aqueous solution Ammonium persulfate 1.5 parts Ion-exchanged water 75 parts

[Synthesis Example 2 of Synthetic Resin Emulsion] The same procedure as in Synthesis Example 1 except that the following monomer emulsion (mixture) and aqueous initiator solution are used, solid content 45%, pH 8.5.
A synthetic resin emulsion (average Tg = 25 ° C., hereinafter referred to as emulsion A-2) was obtained. The compounding composition is shown in Table 1. Polymerization composition of monomer emulsion (b-1); Calculation Tg =
-6 ° C (shell part) 2-ethylhexyl acrylate 180 parts Methyl methacrylate 125 parts 80% Methacrylic acid 12.5 parts Eleminol JS-2 (manufactured by Sanyo Kasei Co., Ltd.) 10 parts Ion-exchanged water 100 parts Monomer mixture (b-2) Polymerization composition of); Calculation Tg =
101 ° C (core part) Styrene 160 parts t-Butyl methacrylate 25 parts Initiator aqueous solution ammonium persulfate 1.5 parts Ion-exchanged water 75 parts

[Synthesis Example 3 of Synthetic Resin Emulsion] The same procedure as in Synthesis Example 1 except that the following monomer emulsion (mixture) and aqueous initiator solution were used, solid content 45%, pH 8.5.
A synthetic resin emulsion (average Tg = 10 ° C., hereinafter referred to as emulsion A-3) was obtained. The compounding composition is shown in Table 1. Polymerization composition of monomer emulsion (c-1); Calculation Tg =
-20 ° C (shell part) 2-ethylhexyl acrylate 200 parts Methyl methacrylate 95 parts 80% Methacrylic acid 1.25 parts Eleminol JS-2 (manufactured by Sanyo Kasei Co., Ltd.) 10 parts Ion-exchanged water 100 parts Monomer mixture (c-2) Polymerization composition of); Calculation Tg =
69 ° C (core part) Styrene 175 parts 2-Ethylhexyl acrylate 25 parts Initiator aqueous solution Ammonium persulfate 1.5 parts Ion-exchanged water 75 parts

[Synthesis Example 4 of Synthetic Resin Emulsion] A polymerization vessel equipped with a stirrer was charged with 420 parts of ion-exchanged water, and the inside of the reaction vessel was heated to 8 while stirring while feeding nitrogen gas.
The temperature was raised to 0 ° C. After the temperature was raised, the following monomer emulsion (d) and initiator aqueous solution were dropped into the reaction vessel to carry out polymerization. The dropping time was 4 hours for the monomer emulsion (d) and 4.5 hours for the aqueous initiator solution. The temperature in the system during dropping is 80
The polymerization was completed while maintaining the temperature at 0 ° C. After completion of the polymerization, the pH was adjusted with aqueous ammonia to obtain a synthetic resin emulsion having a solid content of 45% and a pH of 8.5 (average Tg = 23 ° C., hereinafter referred to as emulsion A-4). The compounding composition is shown in Table 1. Polymerization composition of monomer emulsion (d) 2-ethylhexyl acrylate 185 parts Methyl methacrylate 125 parts Styrene 185 parts 80% Methacrylic acid 6.25 parts Lauryl mercaptan 1.5 parts Eleminol JS-2 (manufactured by Sanyo Chemical Co., Ltd.) 10 parts Ion-exchanged water 100 parts Initiator aqueous solution Ammonium persulfate 1.5 parts Ion-exchanged water 75 parts

<< Examples 1 and 2 >> and << Comparative Examples 1 and 2 >> The obtained synthetic resin emulsion was blended with an emulsion of paraffin wax and an inorganic filler as shown in Table 2 to prepare an antifouling coating agent composition for wallpaper. The material was adjusted and coated on the surface of a paper wallpaper made of pulp with a bar coater, and subsequently dried in a hot air dryer at 120 ° C. for 2 minutes to obtain an antifouling wallpaper. The antifouling wallpaper thus obtained was evaluated for antifouling property, blocking property and workability by the following test methods. The evaluation results are shown in Table 2.

From the results shown in Table 2, with respect to the antifouling coating agent composition for wallpaper of Example 1 and Example 2 of the present invention, satisfactory results were obtained in all of the antifouling properties, blocking properties and workability. However, it is understood that the antifouling coating composition for wallpaper of Comparative Example 1 and Comparative Example 2 has a poor balance of antifouling property, blocking property and workability.

[Test method for antifouling property] Various stains (water-based pen, crayon, coffee, soy sauce) were applied to the surface of the antifouling wallpaper and allowed to stand at room temperature for 24 hours.
The stains after wiping with absorbent cotton soaked with a double-diluted aqueous solution were visually evaluated relative to each other according to the following criteria. 5: Can be completely removed. 4: A little stain remains, but it can be almost removed. 3: About half the dirt can be removed. 2: A part of the dirt can be removed, and almost all the dirt remains. 1: cannot be removed at all

[Testing Method for Blocking Property] Two antifouling wallpapers, one having the front side and the other with the backside, are sandwiched between two glass plates, and a load is applied to the thermostatic chamber at 40 ° C. and a relative humidity of 65%. After standing for 3 days, the antifouling wallpaper was peeled off and the blocking state was visually evaluated for comparison. ○: No blocking at all. Δ: There is some blocking. X: There is blocking.

[Test method for workability] When the antifouling wallpaper was applied to a wall using a commercially available work paste, floating, peeling, and joint gap were evaluated by visual observation. ○: No floating, peeling, or joint gap. Δ: There is no floating or peeling, but there is some joint gap. X: Floating, peeling, and joint gap.

[0057]

[Table 1]

[0058]

[Table 2]

Paraffin wax: E-0136 (solid content 40%, melting point 60 ° C., manufactured by Nippon Seiro Co., Ltd.) Aluminum hydroxide: C-303 (average particle diameter 2 μm,
Sumitomo Light Metal Co., Ltd.) Calcium carbonate: NS-100 (average particle size 3μ
m, manufactured by Nitto Koka Co., Ltd.)

[0060]

INDUSTRIAL APPLICABILITY The present invention is an antifouling coating agent composition for wallpaper which comprises a synthetic resin emulsion having a core-shell structure of a specific Tg, a wax and an inorganic filler, and has not only excellent antifouling performance but also excellent antifouling performance. It is also extremely useful because of its excellent blocking property and workability.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C09D 151/00 C09D 151/00 191/00 191/00 (72) Inventor Yoshifumi Tamaki Fujisawadai, Tomitabayashi-shi, Osaka 2-2 379 F-term (reference) 4F100 AA08B AA19B AA20B AA21B AC10B AK01B AK25 BA02 BA07 CA19B CA23B CC00B DG10A EH46 GB08 JA05B JL01 JL06B 4J 226 HA221 HA121CH01 CH011 CP011 CH011 CH011 CH011 CH011 CP011 CH011 CH011 CH011 HA536 JA02 KA08 KA09 KA20 MA10 MA13 NA04 NA10 NA23 PA18 PB05 PC08 PC10

Claims (6)

[Claims] 1. An antifouling coating agent composition for wallpaper, comprising a synthetic resin emulsion (A), wherein the synthetic resin emulsion (A) has an average glass transition temperature (average Tg) of 20 to 6.
The antifouling coating agent composition for wallpaper, which has a minimum film forming temperature (abbreviation: MFT) of 20 ° C. or lower in the range of 0 ° C. 2. The synthetic resin emulsion (A) has a core-shell structure, Tg of the core part is 40 to 150 ° C., and Tg of the shell part is -30 to 10 ° C.
The antifouling coating agent composition for wallpaper as described above. 3. The antifouling coating agent composition for wallpaper according to claim 1, which further contains a wax (B). 4. The antifouling coating agent composition for wallpaper according to claim 3, wherein the wax (B) is a paraffin wax having a melting point of 50 to 80 ° C. 5. The antifouling coating agent composition for wallpaper according to claim 4, which further comprises an inorganic filler (C). 6. An antifouling coating agent composition for wallpaper containing a synthetic resin emulsion (A), a wax (B) and an inorganic filler (C), wherein the synthetic resin emulsion (A) has an average Tg of 20 to 20. It is in the range of 60 ° C., the minimum film forming temperature (MFT) of (A) is 20 ° C. or lower, the Tg of the core part of (A) is 40 to 150 ° C., and the Tg of the shell part is − The wax (B) is a paraffin wax having a melting point of 50 to 80 ° C., and the inorganic filler (C) is calcium carbonate, aluminum hydroxide, titanium oxide, clay, talc, kaolin, or silicon dioxide. An antifouling coating agent composition for wallpaper, which is at least one selected.