JP2010275540A - Delustering soil-resistant treating material for mortar applied surface, and soil-resistant finishing method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil-resistant treating material for a mortar applied surface, with which excellent soil resisting and removing properties are imparted to the mortar applied surface while maintaining a mortar function, and to provide a finishing method of the mortar applied surface using the same. <P>SOLUTION: The delustering soil-resistant treating material for the mortar applied surface includes a silicone resin emulsion, a wetting agent, a delustering agent, and a thickening agent, wherein the compounding ratio of the silicone resin emulsion is 2-30 mass% in terms of solid contents, and the compounding ratio of the wetting agent is 0.8-20 pts.mass with respect to 100 pts.mass of the solid contents of the silicone resin emulsion. It is desirable to use the delustering soil-resistant treating material for the mortar applied surface in such a way that the solid contents of the silicone resin emulsion is 2-25 g/m<SP>2</SP>. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is capable of imparting excellent antifouling / removal properties to the plaster coated surface while maintaining the function of the plaster, and finishing the plaster coated surface using the antifouling treatment material for the plaster coated surface Regarding the method.

Stucco is excellent in functions such as moisture control (moisture absorption and moisture release), anti-condensation and anti-mold properties in addition to a calm and solid finish, so it has long been used as an indoor / outdoor coating wall material for Japanese architecture. In recent years, it has been reviewed again as a natural material free from the harmful effects of chemical substances such as sick house syndrome.
However, plaster construction requires skilled plastering work, and it is easy for variations in the finish to occur due to the skill of the operator, and the construction efficiency is poor due to the necessity of multiple times of repeated construction (painting and iron scraping), There were drawbacks in that the construction period took a long time and the construction cost was high.

Therefore, various water-based paint compositions based on slaked lime, which is a component of a plaster wall material, have been proposed as in Patent Documents 1 to 4, and conventional painting operations such as brushes and rollers are performed by using these compositions. This makes it possible to easily form a plaster coating film.
However, although such a plaster coating surface is excellent in moisture absorption and desorption because it is porous, once liquid contaminants such as soy sauce and coffee adhere to the inside, it quickly penetrates into the interior, and its removal is very It was difficult. In addition, when painted on the outer wall of a building, the generated ephro (white flower) adheres to the surface and has a drawback that it cannot be removed by rubbing with a cloth many times. In order to solve the problem, there is a method of applying a clear paint such as Patent Document 5 on such a coating surface. However, this method has functions such as antibacterial property, antifungal property and humidity control property of the plaster coating film. In addition, the matte texture is liable to be deteriorated, and the anti-contamination property and removal performance are not necessarily sufficient.

JP 2000-313841 A JP 2000-313843 A JP 2001-187867 A JP 2001-187858 A JP 2005-15727 A

  The object of the present invention is to maintain the function of the plaster and to impart excellent antifouling property / removability to the plaster coated surface without impairing its texture, and an antifouling treatment material for the plaster coated surface and It is providing the finishing method of the plaster application surface using it. Moreover, an object of this invention is to provide the manufacturing method of the plaster coating material provided with the pollution prevention property and the removability.

The inventors of the present invention have made extensive studies in order to solve the above-mentioned problems. By using a silicone resin emulsion and a wetting agent in combination, not only the adhesion of dirt to the plaster coating surface can be prevented, but also the dirt adheres. Even if it does, it finds that it can be easily removed by a simple method such as wiping without completely contaminating the plaster coated surface, and the function of the plaster that the plaster coated surface has,
In particular, it was confirmed that the antibacterial and antifungal properties were not impaired. Also, by blending a matting agent, it is possible to maintain the plaster-specific texture of the plaster application surface, generally maintaining the function of the plaster, and having excellent anti-fouling properties on the plaster application surface without impairing the texture. -It was confirmed that removability can be imparted.
The present invention has been completed based on such findings and includes the following embodiments:

(I) Matting antifouling treatment material for plaster application surface (I-1) Silicone resin emulsion, wetting agent, matting agent and thickener are contained, and the blending ratio of the silicone resin emulsion is 2 to 30 in solid content. Matting antifouling treatment material for plaster coated surface, characterized in that the blending ratio of mass% and wetting agent is 0.8 to 20 parts by mass with respect to 100 parts by mass of the solid content of the silicone resin emulsion.
(I-2) Matting antifouling treatment material according to (I-1), wherein the blending ratio of the wetting agent in the matting antifouling treatment material is 0.1 to 2% by mass.
(I-3) The solid content of the silicone resin emulsion is ² to 25 g / m ^{2 with} respect to the plaster coating surface.
The matte antifouling treatment material described in (I-1) or (I-2).
(I-4) The matte antifouling treatment material according to any one of (I-1) to (I-3), wherein the viscosity is adjusted to 50 to 1000 mPa.
(I-5) At least one selected from inorganic powder, resin beads and waxes as a matting agent
The matte antifouling treatment material according to any one of (I-1) to (I-4), which contains a seed.
(I-6) Matting antifouling according to any one of (I-1) to (I-4), which contains at least one selected from silica powder, ceramic powder, lime and resin beads as a matting agent Treatment material.
(I-7) The matting ratio of the matting agent is 5 to 200 parts by mass with respect to 100 parts by mass of the solid content of the silicone resin emulsion contained in the matting antifouling treatment material. -1)
Thru | or the mat | matte antifouling processing material as described in any of (I-6).
(I-8) The wetting agent is at least one compound selected from the group consisting of a polyacrylic acid compound and a polyoxyethylene compound, and is described in any one of (I-1) to (I-7) Matte antifouling treatment material.
(I-9) The matte antifouling treatment material according to any one of (I-1) to (I-8), wherein the wetting agent is a nonionic surfactant.
(I-10) The thickener is at least one selected from the group consisting of water-soluble fiber derivatives, polysaccharides, polyvinyl alcohol and inorganic thickeners (I-1) to (I-9) The matte antifouling treatment material described in any of the above.

(II) Anti-fouling finishing method for plaster application surface (II-1) Matting antifouling treatment material for plaster application surface described in any of (I-1) to (I-10),
An antifouling finishing method for a plaster coated surface, characterized in that the plaster coated surface is coated.
(II-2) The coating is carried out at a rate of ^{20 to} 200 g / m ² so that the solid content of the silicone resin emulsion is ^{2 to} 25 g per 1 m ^{2 of the} coating surface. The antifouling finishing method of the plaster application surface to describe.
(II-3) The water contact angle of the coating film formed by the matte antifouling treatment material for plaster coated surface described in any of (I-1) to (I-10) is 100 ° or more. The antifouling finishing method for the plaster coated surface described in (II-1) or (II-2), which is characterized.

(III) Manufacturing method of a plaster coated product having a plaster coated surface with antifouling / removability (III-1) Matte for plaster coated surface described in any of (I-1) to (I-10) The manufacturing method of the stucco coating which has a process which coats the antifouling processing material on the stucco application surface of a stucco application material, and has a stucco application surface provided with antifouling and removability.
(III-2) The matte antifouling treatment material for plaster application surface described in any of (I-1) to (I-10), the solid content of the silicone resin emulsion is ^{2 to} 25 g per 1 m ^{2 of the} application surface. The manufacturing method described in (III-1) is characterized in that the plaster coating surface of the plaster coating is coated at a rate of ^{20 to} 200 g / m ² .
(III-3) In (III-1) or (III-2), the plaster coating is a building material such as a board, panel, sheet, or wallpaper for building interior and exterior that is painted or printed with a plaster composition Manufacturing method to be described.

  According to the finishing method using the matte antifouling treatment material of the present invention, the antibacterial and antifungal properties of the plaster are maintained, and the surface of the plaster is contaminated without deteriorating its texture. It is possible to impart antifouling property and removability so that it is difficult to adhere an object and can be easily removed even when a contaminant is adhered. Furthermore, even if efflorescence (white flower) occurs on the plaster application surface, it can be easily removed.

  The matte antifouling treatment material of the present invention and the finishing method using the same can be applied to an existing plaster application surface, and a plaster application surface is formed using a plaster composition containing lime, a binder and water. After that, it can be used as a finishing material and a finishing method for the plaster coated surface. That is, by using the antifouling treatment material of the present invention and the finishing method using the same, it is possible to eliminate the difficulty of removing dirt, which has been a conventional problem on the plaster coating surface, while maintaining the function of the plaster. This makes it possible to widely apply the plaster composition to the interior and exterior of various buildings.

(1) Matte antifouling treatment material for plaster application surface The matte antifouling treatment material for plaster application surface of the present invention (hereinafter simply referred to as “antifouling treatment material”) maintains the function of stucco and has a texture. It is used to provide anti-contamination and removability so that it can be easily removed even when contaminants adhere to the plaster coated surface without damaging the surface. A finishing material exclusively for the plaster application surface, characterized by containing a silicone resin emulsion, a matting agent, a wetting agent and a thickening agent.

  As the silicone resin emulsion, conventionally known ones can be used without particular limitation. For example, (1) an emulsion in which polyorganosiloxanes obtained by polycondensation of an alkoxysilane compound or a condensate thereof are dispersed, emulsified or dissolved in an aqueous medium. (2) a copolymer emulsion obtained by copolymerizing an alkoxysilyl group-containing vinyl monomer with another vinyl monomer as required; (3) an emulsion obtained by combining a polyorganosiloxane with an organic polymer; Can be mentioned.

In the above (1), examples of the alkoxysilane compound that is a constituent component of the polyorganosiloxane include methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, tert-butoxy group, pentyl. The silane compound which has C1-C6 alkoxy groups, such as an oxy group and a hexyloxy group, can be mentioned. Such an alkoxy group may be substituted with a halogen atom such as a chlorine atom or a fluorine atom.

The alkoxysilane compound may further have an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, an alkanol group, or an aralkyl group. Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, an n-pentyl group, an isopentyl group, a neopentyl group, and a t-pentyl group. , N-hexyl group, n-heptyl group, n-octyl group, isooctyl group, 2,2,4-trimethylpentyl group, n-nonyl group, n-decyl group, n-dodecyl group, etc. There may be mentioned 20 linear or branched alkyl groups. A part of the alkyl group may be substituted with a halogen atom such as a chlorine atom or a fluorine atom, an acryloxy group, a methacryloxy group, a mercapto group, or an epoxycyclohexyl group.

  Examples of the cycloalkyl group include a cyclopentyl group and a cyclohexyl group. The cycloalkyl group may be partially substituted with a lower alkyl group having 1 to 6 carbon atoms, and examples of the cycloalkyl group include 4-ethylcyclohexyl group. Examples of the alkenyl group include vinyl group, allyl group, n-5-hexenyl group, 4-vinylcyclohexenyl group; examples of the aryl group include phenyl group, biphenylyl group, napthyl group, anthryl group, and phenanthryl group. Alkanol groups include o-, m-, p-tolyl groups, xylyl groups, and ethylphenyl groups; aralkyl groups include benzyl groups, α-, and β-phenylethyl groups, and the like. .

  Examples of the alkoxysilane compound having such a substituent include tetramethoxysilane, tetraethoxysilane, methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, n-propyltrimethoxysilane, n- Propyltriethoxysilane, i-propyltrimethoxysilane, i-propyltriethoxysilane, γ-chloropropyltrimethoxysilane, γ-chloropropyltriethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 3, 3,3-trifluoropropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxyp Pyrtriethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, 3,4-epoxycyclohexylethyltrimethoxysilane, 3,4-epoxycyclohexylethyltriethoxysilane, vinyltrimethoxysilane, vinyltri Ethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, di-n-propyldimethoxysilane, di-n-propyldiethoxysilane, di- i-propyldimethoxysilane, di-i-propyldiethoxysilane, divinyldimethoxysilane, divinyldiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxy Silane, and the like can be given. These may be used alone or in any combination of two or more.

  The polyorganosiloxanes used in the present invention include those composed of a plurality of different alkoxysilane compounds. Two or more different polyorganosiloxanes can be used in any combination.

Specific examples of commercially available emulsions made of polyorganosiloxane include, but are not limited to, for example, “WACKER BS 45”, “WACKER BS 1306”, “WACKER BSR 50”,
"WACKER 290", "WACKER SMK 1311", and "WACKER SMK 2101" (all manufactured by Asahi Kasei Wacker Silicone Co., Ltd.), "TEGO Phobe 1000S", "TEGO Phobe 1400", "TEGO Phobe 1500N", "TEGO Phobe 1600 And “TEGO Phobe 1650” (both manufactured by Evonik Degussa).

On the other hand, examples of the alkoxysilyl group-containing vinyl monomer in the emulsion (2) include vinyltrimethoxysilane, vinylmethyldimethoxysilane, vinyltriethoxysilane, vinylmethyldiethoxysilane, vinyltris (2-methoxyethoxy) silane, and vinyl. Triisopropoxysilane, γ- (meth) acryloyloxypropyltrimethoxysilane, γ- (meth) acryloyloxypropylmethyldimethoxysilane, γ- (meth) acryloyloxypropyltriethoxysilane, γ- (meth) acryloyloxypropylmethyl Diethoxysilane, γ- (meth) acryloyloxypropyltri-n-propoxysilane, γ- (meth) acryloyloxypropyltriisopropoxysilane, vinyltriacetoxy Emissions, beta-(meth) acryloyloxyethyl trimethoxysilane and the like. These may be used alone or in combination of two or more.

Other vinyl monomers copolymerized with the alkoxysilyl group-containing vinyl monomer as necessary include methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate , 2-ethylherate; hydroxyl-containing (meth) acrylate such as 2-hydroxyethyl (meth) acrylate;
Carboxyl group-containing (meth) acrylates such as meth) acrylic acid; Amino group-containing (meth) acrylates such as dimethylaminoethyl (meth) acrylate and dimethylaminopropyl (meth) acrylate; (meth) acrylamide, ethyl (meth) acrylamide, etc. Amide-containing (meth) acrylate; Nitrile group-containing (meth) acrylate such as acrylonitrile; Epoxy group-containing (meth) acrylate such as glycidyl (meth) acrylate; Aromatic hydrocarbons such as styrene, methylstyrene, chlorostyrene, vinyltoluene -Based vinyl monomers; ethylenically unsaturated carboxylic acids such as maleic acid, itaconic acid, crotonic acid, fumaric acid and citraconic acid; sulfonic acid-containing vinyl monomers such as styrene sulfonic acid and vinyl sulfonic acid; Maleic acid, include acid anhydrides such as itaconic anhydride, which can be used alone or in combination.

  Examples of the emulsion of (3) above include copolymer emulsions obtained by copolymerizing the alkoxysilyl group-containing vinyl monomer of (2) with other vinyl monomers as necessary, as listed in (1) above. An emulsion obtained by silicone modification using an alkoxysilane compound; when polymerizing the other vinyl monomer described in (2) above, using an alkoxysilane compound listed in (1) during or after the polymerization The emulsion etc. which modify | denatured polyorganosiloxane can be mentioned.

  As the silicone resin emulsion in the present invention, the emulsion described in (1) can be preferably used, and as the polyorganosiloxane, specifically, an emulsion containing polydimethylsiloxane, polydiphenylsiloxane or polymethylphenylsiloxane is particularly suitable. ing.

  The content ratio of the silicone resin emulsion is 2 to 30% by mass (solid content), preferably 3 to 25% by mass (solid content), more preferably 4 to 20% by mass (solid content) in the antifouling treatment material. More preferably, it is 5-15 mass% (solid content). When the content ratio is much less than 2% by mass, the water contact angle of the formed coating film due to the antifouling treatment material is lowered, so that the contamination easily penetrates the plaster coating film and is difficult to remove, and the removal of Efro (white flower) is also difficult. It becomes easy to become. On the other hand, if it greatly exceeds 30% by mass, functions such as antibacterial and antifungal properties of the plaster coated surface tend to be impaired, which is not preferable. In addition, here, when the antifouling treatment material is an antifouling treatment material used by diluting in the field, the content ratio of the silicone resin emulsion (solid content) is in the antifouling treatment material actually used. It means the content ratio (hereinafter the same applies to other components). Accordingly, when the antifouling treatment material is used after being diluted with water or the like, it is the content ratio of the silicone resin emulsion (solid content) in the diluted antifouling treatment material.

As the matting agent in the present invention, conventionally known matting agents can be used without particular limitation, for example, inorganic powders such as silica powder, ceramic powder and lime; resin beads such as acrylic beads, polyethylene beads and urethane beads; polyolefin wax and its Derivatives, montan wax and derivatives thereof, and waxes such as paraffin wax and derivatives thereof. Among these, at least one selected from silica powder, ceramic powder, lime, and resin beads is particularly preferable from the viewpoint of improving the matte feeling on the plaster coated surface, and usually has a particle diameter of 1 to 20 μm. Those having the following are preferred.

  Here, the lime includes slaked lime mainly composed of calcium hydroxide and quick lime mainly composed of calcium oxide. The antifouling treatment material contains lime, which can impart anti-bacterial and anti-mold properties such as antibacterial and anti-mold properties and a matte feel to the plaster coating surface without impairing the anti-contamination and decontamination properties of the treatment film. .

  The matting agent has a coating film concealment rate of 30% or less, so that the 85 degree specular gloss of the coating film formed by the antifouling treatment material is 15 or less, preferably 10 or less, preferably 5 or less. It is appropriate to blend so as to be preferably 20% or less, more preferably 10% or less. In order to obtain such a specular gloss and a concealment rate, although it varies depending on the type of matting agent used, the matting agent is usually 5 to 200 parts by mass with respect to 100 parts by mass of the solid content of the silicone resin emulsion. It is suitable to mix in a range. Preferably it is 10-100 mass parts, More preferably, it is 10-50 mass parts.

In this specification, the specular gloss of the coating film formed with the antifouling treatment material is a value measured according to the specular gloss of JIS K5600-4-7 (1999). In addition, the concealment rate (%) of the formed coating film is in accordance with JIS K 56004-1 Method B (Concealment rate test paper), white (Y _W ) and black ( Y _B ) can be obtained by randomly selecting four locations on each of them, measuring the tristimulus values at those locations, and calculating the average tristimulus values Y _W and Y _B. A value obtained by calculating 100% of Y _B / Y _W obtained by such calculation is defined as a concealment rate.

  As the wetting agent in the present invention, those usually used as a wetting agent or a wetting agent for paint applications can be used without limitation. For example, alkylnaphthalene sulfonate soda formalin condensate, polyacrylate, styrene-maleic acid copolymer, olefin / maleic anhydride copolymer, polystyrene sulfonate, acrylamide / acrylic acid copolymer, sodium alginate, isostearin Acid polyoxyethylene glyceryl, fatty acid ester of polyoxyethylene, alkylphenol ether, sulfosuccinic acid derivative such as sodium dioctylsulfosuccinate, block polymer of polyethylene oxide and polypropylene oxide, alkylene oxide silane compound, acetylene alcohol or acetylene dialcohol or Those polyether products can be mentioned. Preferred are nonionic and anionic surfactants commonly used as wetting agents in water-based paints. Nonionic surfactants include ester types (or polyhydric alcohol types) in which fatty acids and fatty acids such as glycerin, sorbitol, and sucrose are ester-bonded; ethylene oxide on a base material having a hydroxyl group such as higher alcohols or alkylphenols. Or ether type prepared by adding propylene oxide or the like (POE alkyl ether, POE alkyl phenyl ether, polyoxyethylene polyoxypropylene glycol); ester ether type in which ethylene oxide is added to fatty acid or polyhydric alcohol fatty acid ester; And fatty acid alkanolamide type surfactants. Of these, polyoxyethylene-based nonionic surfactants such as polyoxyethylene alkyl ether are preferred. Such polyoxyethylene nonionic surfactants include, but are not limited to, polyoxyethylene octyl phenyl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, and poly (oxyethylene / oxypropylene) methylpolysiloxane. Examples thereof include polymers, polyoxyethylene hydrogenated castor oil, polyoxyethylene stearamide, and polyoxyethylene polyoxypropylene glycol.

As anionic surfactants, polyoxyethylene aryl ether sulfate,
Polyoxyethylene surfactants such as polyoxyethylene polycyclic phenyl ether sulfate, polyoxyethylene alkyl ether sulfate, polyoxyethylene castor oil ether sulfate, polyoxyethylene alkyl ether phosphate; Examples thereof include polyacrylic acid surfactants such as sodium acrylate. Examples of such anionic surfactants include DISPER BYK-180, DISPER BYK-183, DISPER BYK-184, DISPER BYK-185, DISPER BYK-190, DISPER BYK-191, and "DISPER BYK-194" (above, trade name, manufactured by BYK Chemie) and "EFKA-4550", "EFKA-4560", "EFKA-4570", "EFKA-4590" (above, trade name, Chiba Specialty Chemicals) ) Etc. can also be used.

  In particular, polyacrylic acid type wetting agents, polyoxyethylene type wetting agents, and the like are wetting agents that can be suitably used from the viewpoint of improving the wettability to the plaster coating film surface when the treatment material is applied.

  The wetting agent is desirably blended at a ratio of 0.8 to 20 parts by mass with respect to 100 parts by mass of the solid content of the silicone resin emulsion contained in the antifouling treatment material. By blending in this range, the contamination of the plaster coating surface (antibacterial and antifungal properties) on the plaster coating surface covered with the antifouling treatment material is not significantly impaired, and the contaminants adhere to the coating and penetrate into the coating. Can be suppressed. Moreover, by mix | blending in the said range, even when contaminants, such as soy sauce, adhere to a coating film, the attached contaminant can be removed easily. In particular, by setting the ratio of the wetting agent to 100 parts by mass of the solid content of the silicone resin emulsion to 1 part by mass or more, preferably 2 parts by mass or more, it is possible to impart excellent dirt removal properties while maintaining the stucco function. Yes (see Table 3).

  From the viewpoint of antifouling property, the blending ratio of the wetting agent to the solid content of 100 parts by mass of the silicone resin emulsion in the antifouling treatment material is preferably 1 to 17 parts by mass, more preferably 1 to 12 parts by mass, and still more preferably. 1-10 mass parts, More preferably, it is 1-9 mass parts, Most preferably, 1-8 mass parts can be mentioned.

  Moreover, 0.1-2 mass% can be mentioned as a ratio of the wetting agent in 100 mass% of antifouling processing materials. Preferably it is 0.1-1 mass%, More preferably, it is 0.2-0.8 mass%, More preferably, it is 0.4-0.7 mass%.

  As the thickener in the present invention, those usually used as a thickener in paint applications and the like can be used without limitation, for example, water-soluble such as carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose, etc. Fibrin derivatives; polysaccharides such as guar gum, xanthan gum and locust bean gum; inorganic thickeners such as bentonite, montmorillonite, colloidal alumina; polyvinyl alcohol, polyvinyl pyrrolidone, sodium polyacrylate, polyacrylate Examples thereof include a polymer, a polyether dialkyl ester, a partial ester of vinyl methyl ether-maleic anhydride copolymer, and sodium alginate. Among these, water-soluble fiber derivatives and polysaccharides, such as water-soluble fiber derivatives, polysaccharides, polyvinyl alcohol, and inorganic thickeners, can be preferably used from the viewpoint of coating workability.

  The thickener is suitably blended so that the final viscosity of the antifouling treatment material can be adjusted within the range of 50 to 1000 mPa, preferably 50 to 300 mPa. In order to obtain such a viscosity, it usually depends on the type of thickener used, but normally, a thickener is blended so that it is about 0.02 to 1% by mass in 100% by mass of the antifouling treatment material. Is suitable from the viewpoint of viscosity adjustment and water resistance of the formed coating film.

In the present invention, the viscosity of the antifouling treatment material is 1 at 60 rpm at 23 ° C. using a Brookfield rotary viscometer (Toki Sangyo, TVB-10M type, rotor number No. 2 or 3). It is the value obtained by measuring for minutes. When the viscosity of the antifouling treatment material is significantly lower than 50 mPa, the thickening effect is insufficient, and the storage stability of the antifouling treatment material tends to decrease. Further, when the antifouling treatment material is used for finishing the plastered surface of the ceiling or wall of a building, there is a tendency that sagging is likely to occur. On the other hand, when the viscosity greatly exceeds 1000 mPa, uniform coating on the plaster application surface becomes difficult, and there is a tendency that it is difficult to uniformly impart contamination prevention / removability to the entire plaster application surface.

  In the antifouling treatment material of the present invention, if necessary, for example, a resin component such as an acrylic resin, a polyester resin, a fluororesin, a urethane resin, a pigment component other than the matting agent, a film forming aid, an ultraviolet absorber , Paint additives such as light stabilizers, surface conditioners, antifoaming agents, preservatives and the like can be appropriately blended. In addition, it is preferable that the antifouling processing material of this invention is an aqueous composition which does not contain an organic solvent. However, as long as the object of the present invention is achieved, 100% of the organic solvent is not excluded.

Of these, the resin component is compatible with the silicone resin emulsion and is in the form of an emulsion.
For example, in the case of an acrylic resin emulsion, it is suitable that the glass transition temperature of the resin is in the range of -40 to 40 ° C, particularly 5 to 30 ° C.
The glass transition temperature of the resin of the acrylic resin emulsion can be calculated by the following formula.
[Equation 1]
1 / Tg (° K) = (W ₁ / T ₁ ) + (W ₂ / T ₂ ) +
Tg (° C.) = Tg (° K) -273

In each formula, W ₁ , W ₂ ,... Represent the respective mass% of the monomer used for copolymerization, and T ₁ , T ₂ ,... Represent the Tg (° K) of the monomer homopolymer, respectively. T ₁ , T ₂ ,... Are values according to Polymer Hand Book (Second Edition, edited by J. Brandup / EHImmergut) pages III-139 to 179. The glass transition temperature (° C.) when the Tg of the monomer homopolymer is not clear is a static glass transition temperature, for example, using a differential scanning calorimeter “DSC-220U” (manufactured by Seiko Instruments Inc.), Take the sample in a measuring cup, remove the solvent completely by vacuum suction, measure the change in calorie in the range of -20 ° C to + 200 ° C at a rate of temperature rise of 3 ° C / min. The change point was defined as the static glass transition temperature.

When the antifouling treatment material of the present invention contains the above resin component in addition to the silicone resin emulsion, the use ratio thereof is 10/90 to 90/10, particularly 15 for the above silicone resin emulsion / resin component (solid content mass ratio). In the range of / 85 to 85/15, it is appropriate from the viewpoint of the film formability of the treatment material, the contamination prevention property, and the decontamination property.
The antifouling treatment material of the present invention can be prepared by mixing the above components together with water as necessary, for example, using a mixing device such as a mixer, shaker, mill, kneader.

(2) Finishing method of plaster coated surface using matte antifouling treatment material for plaster coated surface The antifouling treated material of the present invention described above is exclusively for imparting antifouling and decontaminating properties to the plaster coated surface. Used as a finishing material for plastered surfaces. Thus, the stucco-coated surface finished with the antifouling treatment material of the present invention is more contaminated (for example, soy sauce, coffee, aqueous pen, etc.) than the untreated stucco-coated surface. , Oily contaminants such as crayons) and penetration into the interior thereof are remarkably suppressed, and even if they adhere, they can be easily removed.

Coating of the antifouling treatment material of the present invention on the plaster coating surface can be performed by a conventionally known coating method without particular limitation, for example, a method such as roller, brush, spray, roll coating or flow coating. The solid content at the time of application is adjusted to 40% by mass or less, preferably 3 to 30% by mass, more preferably 3 to 20% by mass, and the application amount is usually about ²⁰ to 200 g / m ² , preferably 50. it is appropriate to to 150 g / m ² range of about.

A silicone resin emulsion contained in the coating film formed from the antifouling treatment material in order to exhibit the antifouling property and the decontamination property while maintaining the function (antibacterial and antifungal properties) of the plaster coating surface. it is preferable that the solid content of adjusting the coating amount in a range such that the coated surface 1 m ² per 2~25g / ^{m 2.} More preferably, it is 2-20 g / m < ² >, More preferably, it is 6-15 g / m < ² >.

  Examples of the water contact angle for the coating film formed of the antifouling treatment material to exhibit the antifouling property more effectively include 100 ° or more. Preferably it is 100-140 degrees. In this specification, the water contact angle is defined as the contact angle meter CA using a microsyringe to drop one drop (about 15 μl) of deionized water on a coating surface in a 20 ° C. atmosphere. -X150 "(trade name, manufactured by Kyowa Chemical Co., Ltd.).

  The antifouling treatment material and the finishing method of the present invention are applied to a plaster coated surface, which is an aqueous composition in which lime such as plaster, dolomite, or plaster paint is mixed with water (in the present invention, these are collectively referred to as “stucco composition”). It is the coating film surface formed using. Not limited to this, the plaster application surface includes plaster formed on building materials such as interior and exterior boards and panels, in addition to the plaster application surface formed on the inner and outer walls and ceilings of buildings, and walls It also includes a coated surface and a plaster coated surface formed on an interior / exterior cloth or sheet such as wallpaper.

In addition, the antifouling treatment material and the finishing method of the present invention can be applied to (1) an existing plaster coating surface as long as it is a plaster coating surface formed using a plaster composition, and (2) a plaster composition After forming the plaster coated surface using, it can be used for the finishing treatment.
Here, examples of the stucco composition include an aqueous composition containing lime and water, as described above, but may further include a binder and a pigment.

As said lime, what is used as a stucco material can be mentioned widely. Specific examples include slaked lime mainly composed of calcium hydroxide, and other components such as quick lime and calcium carbonate mainly composed of calcium oxide (calcite, aragonite, vaterite, basic calcium carbonate and amorphous carbonate) Precipitated calcium carbonate such as calcium, heavy calcium carbonate) and dolomite (CaMg (CO ₃ ) ₂ ) may be contained.

  Although the compounding quantity of the said lime is not restrict | limited in particular, Usually, it is 30-75 mass% in solid content of a stucco composition, Preferably it is 40-70 mass%, More preferably, it shall be in the range of 45-65 mass%. From the viewpoint of film formability and film strength.

  The binder used in the plaster composition is not particularly limited. For example, natural glue (funori, seaweed glue, ginkgo glue, etc.), synthetic glue (polyvinyl alcohol or cellulose-based chemical glue) and synthetic resin, respectively. Can be used arbitrarily. The synthetic resin is preferably a water-soluble or water-dispersible resin, such as epoxy resin, alkyd resin, acrylic resin, urethane resin, polyvinyl alcohol resin, polyester resin, fluorine resin, and silicon resin. These may be used alone or in combination of two or more. Among these, particularly acrylic resin systems can be selected from various production methods such as emulsion polymerization, unnecessary organic solvents can be easily removed, and can be suitably used from the viewpoint of alkali resistance of the formed film.

When using a binder, the blending amount is not particularly limited, but is usually in the range of 2 to 50% by mass, preferably 5 to 30% by mass, more preferably 5 to 20% by mass in the solid content of the stucco composition. It is preferable to use the inside from the viewpoint of painting workability and film formability.

  In the case of using a pigment, a conventionally known pigment can be used without particular limitation, and usually includes extender pigments and colored pigments.

Examples of the colored pigment include mainly white pigments and colored pigments other than white, and can be appropriately selected and used without particular limitation.
The white pigment may be an organic pigment or an inorganic pigment, but is preferably an inorganic white pigment. Specific examples include at least one inorganic white pigment selected from the group consisting of titanium oxide, zinc white, zinc sulfide, lithopone, lead white, antimony white and zirconia. These may be used alone or in combination of two or more. Preferred is titanium oxide, or a combination of titanium oxide and another white pigment. Titanium oxide can be used in any form of rutile, anatase and brookite as long as it is used as a white pigment, but is preferably rutile.

  When using a white pigment, the compounding amount is not particularly limited, but is usually 0.5 to 25% by mass, preferably 2.5 to 20% by mass, and more preferably 4 to 15% by mass in the solid content of the stucco composition. % Is preferable from the viewpoint of film formability and concealability.

  As colored pigments other than white, for example, black pigments such as carbon black and iron oxide (iron black); red pigments such as cadmium red, red rose (red iron oxide), molybdenum red and red lead; yellow lead (chrome yellow), Titanium yellow, cadmium yellow, yellow iron oxide (yellow iron), tan, antimony yellow, vanadium tin yellow, vanadium zirconium yellow yellow pigment; chromium oxide, viridian, titanium cobalt green, cobalt green, cobalt chrome green, Victoria green, phthalocyanine Examples thereof include green pigments such as green; blue pigments such as ultramarine, bitumen, cobalt blue, cerulean blue, cobalt silica blue, and cobalt zinc silica blue. Preferably, it is an alkali-resistant color pigment, more preferably, iron oxide such as black iron oxide (iron black), red bean (red iron oxide), or yellow iron oxide (yellow iron) or a metal oxide such as ultramarine, or It is a coloring pigment mainly composed of carbon black. In addition, these may combine 1 type or 2 types or more, and can adjust a combination and a mixture ratio suitably so that it may become a desired color.

  Examples of the extender pigment include barita powder, precipitated barium sulfate, barium carbonate, calcium carbonate, gypsum, clay, silica, white carbon, diatomaceous earth, talc, magnesium carbonate, aluminum hydroxide, and gloss white. These can be used alone or in combination of two or more. Glass beads and aggregates can also be used in combination. When the extender pigment is blended, the blending amount is not particularly limited, but is usually in the range of 1 to 50% by mass, preferably 5 to 40% by mass, more preferably 5 to 20% by mass in the solid content of the stucco composition. It is preferable from the viewpoint of film formation and economy.

  The above-mentioned plaster composition further includes a pigment dispersant, a surfactant, a curing catalyst, an antifoaming agent, a thickener, a film-forming aid, an antiseptic, an antifungal agent, an antifreezing agent, and a pH adjuster as necessary. These additives can be blended alone or in combination of two or more.

In the case of the latter (2) (after forming the stucco coating surface using the stucco composition, and subsequently using the antifouling treatment material for the finishing treatment), after applying the above stucco composition to the coated surface, The antifouling treatment material of the present invention described above is coated on the formed plaster application surface.

The plaster composition can be applied without particular limitation using a conventionally known application method such as a trowel coating, a roller, a brush, a spray, a flow coater, and various printing techniques. The application amount is not particularly limited as long as the formed plaster application surface is a range in which the function of the plaster is exhibited. As an example, the ratio of plaster composition on coated surface, in terms of solid content, 100 to 500 g / ^{m 2,} preferably can be mentioned range of 150 to 300 g / ^{m 2.}

  The coated surface of the stucco composition is not particularly limited, and is a material for ceilings and walls (inner and outer walls) of various buildings, nonwoven fabrics or woven fabrics (fibrous sheets) made of various fibers, and The material surface of various boards, the old paint film surface already painted thereon, and the old cloth tension surface can be mentioned. The coated surface may be subjected to various processes such as a sealer process. The paper may be any of Japanese paper, western paper (high quality paper, medium quality paper), kraft paper, thin paper, backing paper, resin impregnated paper, cardboard, cardboard, etc., for example, flame-treated paper In addition, those suitable for wallpaper construction, such as flame-retardant backing paper and non-combustible paper, are also included. Examples of the fibrous sheet include natural fibers; glass fibers; or porous woven fabrics, nonwoven fabrics, knitted fabrics, and the like obtained by using synthetic fibers such as polypropylene, acrylic, nylon, polyester, polyamide, and vinylon. it can. In addition, the said raw material can be used individually by 1 type, or can also be used in combination of 2 or more types arbitrarily. As a board, the board used for interior (for example, an indoor wall, a ceiling, etc.) and exterior for construction can be mentioned widely, for example. Specifically, wood board, plywood, medium density fiber board, plastic board, cement mortar, concrete board, PC panel, ALC panel, asbestos slate, gypsum board, particle board, foam cement board, wood cement board, calcium silicate A board etc. can be illustrated. Gypsum board, gypsum particle board, wood board, medium density fiber board, plastic board and the like are preferable.

It is appropriate to remove dust and dirt from the coated surface using a brush, sandpaper, waste cloth, or the like as necessary.
Further, the coated surface may be coated with a sealer as necessary before the above-mentioned plaster composition is coated. As the sealer, a conventionally known water-based or solvent-type sealer can be used. For example, acrylic resin-based, vinyl resin-based, epoxy resin-based, natural rubber resin-based, synthetic rubber resin-based, silicone resin-based, polyester Resins such as those containing resin as a film forming component can be used. Of these, epoxy resins can be used preferably. In addition to the above-mentioned pigments, the sealer further includes pigment dispersants, surfactants, curing catalysts, antifoaming agents, thickeners, film-forming aids, preservatives, antifungal agents, antifreeze agents, pH adjusters, etc. These additives can be appropriately selected and blended.

The sealer can be applied by a conventionally known coating method, for example, a roller, a brush, a spray, or the like without any particular limitation. The coating amount (in terms of solid content) is usually about 50 to 300 g / m ² , and preferably about 80 to 200 g / m ² .
Moreover, in this invention, after coating the said sealer, you may apply | coat the water-based top coat as needed on the sealer application surface before the coating of the above-mentioned stucco composition. As the water-based top coat, it is possible to use a conventionally known top coat, such as acrylic resin, urethane resin, vinyl chloride resin, fiber resin, silicone resin, polyester resin, alkyd resin, fluorine. Water-based paints such as resin systems and two or more kinds of these modified resin systems and blend resin systems can be used. In addition to the above-mentioned pigments, water-based top coating materials further include pigment dispersants, surfactants, curing catalysts, antifoaming agents, thickeners, film-forming aids, preservatives, antifungal agents, antifreeze agents, and pH adjustments. An additive such as an agent can be appropriately selected and blended.

The water-based top coating can be applied by a conventionally known coating method, for example, a roller, a brush, a spray, or the like without any particular limitation. The coating amount (in terms of solid content) is usually about 100 to 500 g / m ² , preferably about 150 to 300 g / m ² .

(3) Manufacturing method of stucco coating with antifouling / removability As described above, the antifouling treatment material of the present invention is used to impart antifouling and decontaminating properties to the plaster coated surface. . Therefore, by using the antifouling treatment material, it is possible to produce a plaster coated material having antifouling properties and decontamination properties.

  Here, the plaster coated material broadly means those which are painted, coated or printed with the plaster composition described in (2). As an object to be painted, coated or printed with a plaster composition, a sheet material (wallpaper or the like) used for manufacturing an interior for buildings (interior walls, ceilings, etc.) or an interior building material (for example, interior panels); Joinery (for example, board doors, lattice doors, shoji screens, lanterns, flush doors, pier doors, coffin doors, etc.), furniture (for example, clothes holders, chests, desks, bookcases and clogs), lighting fixtures, furniture around water (For example, sinks and washstands), office tools (for example, partitions, bookcases, desks, etc.), and sheet materials used for decorative finishing of these members; non-woven fabrics or woven fabrics (fibrous sheets) composed of various fibers; and Examples include boards and panels used for architectural interiors (interior walls, ceilings, etc.) and exteriors.

  The antifouling treatment material of the present invention can be coated on the plaster coated surface of the plaster coated material according to the method described in (2). Thus, a stucco coating having a stucco coating surface with antifouling and decontamination properties can be prepared.

  Hereinafter, the present invention will be described in more detail with reference to experimental examples and examples. Hereinafter, “parts” and “%” represent “parts by mass” and “% by mass”, respectively.

Experimental example 1
Production Example 1
(1) Manufacture of stucco composition (1-1) Manufacture of stucco composition (I) 20 parts of acrylic resin emulsion with a solid content of 40%, 30 parts of slaked lime, 8 parts of titanium oxide, 10 parts of calcium carbonate, defoaming agent 0 .5 parts, 0.5 part of thickener and 31 parts of water were added to the mixer for coating material preparation and dispersed and mixed to produce a stucco composition (i) having a solid content of 57%.

Production Example 2
(1-2) Manufacture of stucco composition (b) 20 parts of acrylic resin emulsion having a solid content of 40%, 30 parts of slaked lime, 8 parts of titanium oxide, 1 part of red iron oxide, 9 parts of calcium carbonate, 0.5 defoamer Part, 0.5 part of thickener, and 31 parts of water were added to the mixer for coating material preparation and dispersed and mixed to produce a stucco composition (b) having a solid content of 57%.

Production Example 3
(1-3) Manufacture of stucco composition (c) 20 parts of an acrylic resin emulsion having a solid content of 40%, 30 parts of slaked lime, 7 parts of titanium oxide, 2 parts of yellow iron oxide, 9 parts of calcium carbonate, 0.5% of antifoaming agent Part, 0.5 part of thickener, and 31 parts of water were added to a mixer for coating material preparation and dispersed and mixed to produce a stucco composition (c) having a solid content of 57%.

Examples 1-11 and Comparative Examples 1-2
(2) Preparation of matte antifouling treatment material Various matting antifouling treatment materials (A) to (M) were obtained by stirring and mixing with the composition shown in Table 1. (Note 1) to (Note 13) in Table 1 are as follows.
(Note 1) Silicone resin emulsion A: 28 parts of polydimethylsiloxane and 20 parts of polymethylsiloxane are blended in 2 parts of isotridecyl alcohol polyglycol ether and 50 parts of water, and then emulsified with a high-speed stator rotor agitator. An emulsion obtained. Solid content 50%.
(Note 2) “WACKER BS 45”: manufactured by Asahi Kasei Wacker Silicone, silicone resin emulsion, solid content 50%.
(Note 3) “WACKER BS 1306”: manufactured by Asahi Kasei Wacker Silicone, modified silicone resin emulsion, solid content 55%.
(Note 4) “TEGO Phobe 1600”: Silicone resin emulsion (containing polydimethylsiloxane), 50% solid content, manufactured by Evonik Degussa.
(Note 5) “TEGO Phobe 1000”: Evonik Degussa, silicone resin emulsion (containing polymethyl-phenylsiloxane), solid content 50%.
(Note 6) Acrylic resin emulsion: methyl methacrylate / butyl methacrylate / 2 ethylhexyl acrylate composition, Tg 15 ° C., average particle diameter 180 nm, solid content 45%. (Note 7) Silica powder: hydrous amorphous silicon dioxide powder, average particle size 4 μm, specific gravity 2.15.
(Note 8) Ceramic powder: spherical ceramic (silica / alumina) powder, average particle diameter 1.8 μm, specific gravity 2.3.
(Note 9) Resin beads: polymethyl methacrylate beads, average particle size 8 μm, specific gravity 1.15.
(Note 10) Slaked lime: Special slaked lime (JIS R 9001)
(Note 11) Methylcellulose: The number of methoxy groups in the glucose ring of cellulose is 1.8 and the viscosity of a 2% aqueous solution is about 8000 cps.
(Note 12) Polyacrylic acid type wetting agent: Trade name “EFKA4550” (manufactured by Chiba Specialty Chemicals)
(Note 13) Polyoxyethylene wetting agent: Trade name “Neuken ET-15” (Daiichi Kogyo Seiyaku Co., Ltd.)

(3) Finishing treatment with matte antifouling treatment material (3-1) Preparation of finish test coating plate
Example 12
On a slate plate (90 × 60 × 0.5 cm), “Vindelux 300 White” (JIS K 5663, 1 type, water-based paint manufactured by Kansai Paint Co., Ltd.) is roller-coated to a coating amount of 120 g / m ² for 2 hours. It dried at normal temperature (20 degreeC). Using the coating roller (medium roller, fiber material: acrylic, hair length: 12 mm) on the coated surface, the above-mentioned stucco composition (I) was applied at a coating amount of 200 g / m ² , and the room temperature ( After drying at 20 ° C., the stucco composition (I) was applied to the half of the coated surface at a coating amount of 200 g / m ² and dried at room temperature (20 ° C.) for 24 hours.

Next, the matte antifouling treatment material A was applied to the coated surface (entire surface) at a coating amount of 80 g / m ² and dried at room temperature (20 ° C.) for 24 hours to obtain a finished test coated plate.
The test plate for measuring the 85 ° gloss was measured with a BYK trigloss meter after coating each treatment material on a glass plate with a 6 mil blade and drying at room temperature for 24 hours. Further, the hiding ratio was measured after applying a required amount of white / black hiding ratio test paper with a brush and drying at room temperature for 24 hours.

Examples 13-22 and Comparative Examples 3-4
Each finish test coated plate was obtained in the same manner as in Example 12 except that the plaster composition (I) (B) or (C) and the matte antifouling treatment materials B to M shown in Table 2 were used.

Example 23
In Example 1, instead of the matte antifouling treatment material A, the matte antifouling treatment material G was diluted with 100% water to make the viscosity of the antifouling treatment material 180 mPa (matte antifouling treatment material G ′), a finish test coated plate was obtained in the same manner as in Example 12 except that the coating amount was 90 g / m ² . In the matte antifouling treatment material G ′, the silicone resin emulsion is 35% (solid content: 17.5%), the matting agent is 2.25%, the thickener is 0.11%, and the wetting agent is 0.00. 3% is included. The ratio of the wetting agent to the solid content of 100 parts of the silicone resin emulsion is about 0.9 parts, and the solid content of the silicone resin emulsion in the coating film formed from the matte antifouling treatment material G ′ is 15.75 g / m ^2. It becomes.

(3-2) Evaluation of Finishing Test Coating Plate (1) 85 degree specular gloss, (2) Concealment ratio (2) Concerning the painted surface of each finishing test coating plate, according to the method described in the “Mode for carrying out the invention” column %), And (3) Measure the water contact angle (°) and, according to the following test method, (a) antifouling / removability, (b) retention of stucco function, (c) wet abrasion resistance , (D) washing resistance, (e) gloss unevenness, (f) white flower removal property were evaluated.

(A) Antifouling / Removability : Soy sauce was dropped on each test coating plate and left at room temperature for 24 hours in an oblique 45 ° state. Then, the soy sauce adhering to the coating surface of a test coating board was wiped off and removed with the cloth wetted with water. The removability was visually evaluated according to the following criteria.

◎: Immediately removed, no contaminants are seen, including stains ○: Immediately removed, contaminants (stains) are almost removed ◇: Contaminants (stains) are almost removed, but removal Time required Δ: Some contaminants (stains) remain ×: Contaminants (stains) are hardly removed.

(B) Retaining property of the stucco function : The antifungal property and antibacterial property of the stucco application surface are based on the fact that the stucco application surface is alkaline. For this reason, the elution rate of the alkali from each test coating plate surface was used as an index for evaluating the retention of the stucco function (antifungal and antibacterial properties) on the plaster coating surface. Specifically, a pH test paper moistened with water was placed on the surface of each test coating plate, and the time until it reached a color (red) indicating pH 12 was measured and visually evaluated according to the following criteria.

A: Immediate red coloration (less than 30 seconds)
○: The color gradually turns red (30 seconds to less than 1 minute)
Δ: Slowly reddish (1 to less than 5 minutes)
X: Not very red (5 minutes or more).

(C) Wet abrasion resistance : The surface of each test coating plate was rubbed 5 times with a 200 g load with a cloth wetted with water, and the wet abrasion resistance of the test coating plate surface was evaluated according to the following criteria.

(Double-circle): The plaster coating film piece has not adhered to the wet cloth used for the abrasion test at all.
○: The plaster coating film piece hardly adheres to the wet cloth used in the abrasion test.
(Triangle | delta): The plaster coating film piece has adhered slightly to the wet cloth used for the abrasion test.
X: Many plaster coating film pieces have adhered to the wet cloth used for the abrasion test.

(D) Washing resistance : The surface of each test coated plate was washed 500 times with a washing tester based on JIS K 5663, the antifouling property of the surface was confirmed, and the washing resistance was evaluated. Evaluation criteria conformed to antifouling properties.

(E) Gloss unevenness evaluation : (Distinction between stucco composition once coated surface side and twice coated surface side)
◎: Cannot be discriminated at all ◯: If the light is not applied obliquely, it is hardly understood. Δ: When the light is applied obliquely, the gloss unevenness is clearly understood. ×: The central portion is clearly visible.

(F) efflorescence removability: each test coated plate was at an angle of 45 degrees, 1 drop of cold water (about 5 ° C.) (about 15 [mu] l) was added dropwise and allowed to stand for 1 hour at 5 ° C., wiping it, water contact surface The presence or absence (white traces) of the white flower phenomenon was visually evaluated according to the following criteria.
A: The trace of the water drop is not known at all. O: The trace of the water drop is hardly understood. Δ: The trace of the water drop is slightly understood. X: The trace of the water drop is clearly understood.

  The results are shown in Table 2.

From this result, the solid content of the silicone resin emulsion contained in the coating film formed of the antifouling treatment material is ² to 25 g / m ² , preferably ^{2 to 20} g / m ² , more preferably 6 to 16 g / m ^2. By applying an antifouling treatment material to the plaster coated surface and finishing it, the antifouling and decontamination properties (with antibacterial and antifungal properties) on the plaster coated surface are maintained ( It can be seen that antifouling / removability can be imparted. In addition, it was confirmed that the coating film formed by the above method had wet abrasion resistance, and the surface was not significantly damaged even when wiped with water when dirt was adhered.

  In addition, it was confirmed that the finishing test coating board created in Examples 12-23 has moderate water absorption, and the surface dries rapidly after water absorption. From this, even if the plaster coated surface is coated with the antifouling treatment material of the present invention, it is considered that the humidity control property is not greatly impaired.

Experimental example 2
(1) Preparation of matte antifouling treatment material As shown in Table 3, as with the prescription of the matte antifouling treatment material H (Example 7) prepared in Experimental Example 1, as a silicone resin emulsion, “WACKER BS 1306 ”, And“ silica powder ”as a matting agent and a polyoxyethylene nonionic surfactant (trade name“ Neugen ET-15 ”manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) as a wetting agent. In order to be in the range of 0.8 to 20 parts with respect to 100 parts of the solid content of the emulsion, the matting ratio in the matting antifouling treatment material is 0.1 to 1%, and matting prevention Soil treatment materials (N to T) were prepared.

Examples 24-30
(2) Finishing treatment with matte antifouling treatment material and its evaluation Using the plaster composition (ii) prepared by the same method as described in Production Example 1, a finishing test coated plate was prepared in the same manner as in Example 12. The matte antifouling treatment materials N to T described in Table 3 are applied at a coating amount of 120 g / m ² and dried at room temperature (20 ° C.) for 24 hours to obtain finished test coated plates N to T. Obtained.

  With respect to each test coated plate N to T, (a) removal of contaminants, (b) retention of stucco function, and (c) wet abrasion resistance were evaluated in the same manner as in Example 12. In addition, (a) About the removal property of a contaminant, soy sauce, aqueous pen, and coffee were used as a contaminant. The results are shown in Table 3.

As shown in Table 3, by finishing the stucco coating surface with matte antifouling treatment materials N to T, it is possible to impart particularly excellent soil removability to soy sauce while maintaining the stucco function. (The ratio of the wetting agent to the solid content of 100 parts of the silicone resin emulsion contained in the antifouling treatment material: 1.2 to 12.1 parts, The ratio of the wetting agent in the antifouling treatment material: 0.1 1%).
As can be seen from Table 2, there was a tendency for the retention of the stucco function to decrease as the proportion of the wetting agent with respect to 100 parts of the silicone resin emulsion in the antifouling treatment material decreased, but there was no effect on the soil removability. (See Examples 13, 17, 19 and 20). On the other hand, as can be seen from Table 3, as the ratio of the wetting agent to the solid content of 100 parts of the silicone resin emulsion was increased, the soil removability with respect to the aqueous pen and coffee was observed to decrease. However, the soil removal property for soy sauce was not significantly affected.
From the results of Tables 1 to 3, the ratio of the wetting agent to 100 parts of the solid content of the silicone resin emulsion in the antifouling treatment material is 0.8 to 20 parts, preferably 1 to 17 parts, more preferably 1 to 1. It is thought that the removability with respect to the said stain | pollution | contamination can be improved by mix | blending so that it may become 12 parts, More preferably 1-10 parts, Most preferably 1-9 parts. Moreover, it is thought that the outstanding stain | pollution | contamination removal property can be provided, maintaining a stucco function by making the ratio of the wetting agent 2 parts or more with respect to 100 parts of silicone resin emulsion solid content.

Claims (7)

  Contains a silicone resin emulsion, wetting agent, matting agent and thickener, the blending ratio of the silicone resin emulsion is 2 to 30% by mass in the solid content, and the blending ratio of the wetting agent is 100 parts by mass of the solid content of the silicone resin emulsion. A matte antifouling treatment material for a plaster coated surface, characterized by being 0.8 to 20 parts by mass.   The matting antifouling treatment material according to claim 1, wherein the blending ratio of the wetting agent in the matting antifouling treatment material is 0.1 to 2% by mass. The matte antifouling treatment material according to claim 1 or 2, which is used so that the solid content of the silicone resin emulsion is ² to 25 g / m ² with respect to the plaster coating surface.   An antifouling finishing method for a plaster coated surface, wherein the matte coated surface is coated with the matte antifouling treatment material according to any one of claims 1 to 3. It coats in the ratio of application amount 20-200 g / m < ² > so that solid content of a silicone resin emulsion may be 2-25 g per application surface 1 m < ² >, The prevention of the plaster application surface of Claim 4 characterized by the above-mentioned. Dirty finishing method.   The antifouling finishing method for a plaster coated surface according to claim 4 or 5, wherein the water contact angle of the coating film formed of the matte antifouling treatment material is 100 ° or more.   The manufacturing method of the stucco coating thing provided with antifouling and removal property which has the process of coating the matt antifouling processing material as described in any one of Claims 1 thru | or 3 on the stucco coating surface of a stucco coating thing.