JP3169085B2 - Emulsion paint for building interior and exterior - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel and useful emulsion paint for interior and exterior of buildings. More specifically, the present invention relates to an emulsion paint for interior and exterior of buildings, which contains a synthetic resin emulsion as a binder and is obtained by using an emulsifier mainly containing a specific compound such as polyoxyalkylenestyrenated phenyl ether.

[0002]

2. Description of the Related Art Heretofore, many types of emulsion paints for building interiors and exteriors using a synthetic resin emulsion as a binder component have been used for the purpose of cosmetics and surface protection.

[0003] These conventional emulsion paints for interior and exterior of buildings are largely classified into a thin film coating type and a thick film coating type. Since the thin film coating type is mainly used as a finish coating material, the toning property and the like are emphasized, so that the coating workability tends to be inferior.

[0004] Conversely, those having excellent coating workability tend to have poor tonality. In addition, the thick film coating type after underblowing,
They are often used with a pattern, but none satisfy both.

[0005] Further, even when only the pattern is formed, the coating workability is insufficient. Although these thin-film and thick-film paints can be improved to some extent by the choice of additives in the paint formulation, they can never be an essential solution.

[0006]

As described above, as far as the prior art is concerned, there is no thin film coating type which satisfies both the toning property and the coating workability.

[0007] In addition, the thick-film coating type is incompletely used. By the way, recently, the coating workability, which has been supplemented by the coating technique of the coating technician, has become more and more compelling due to the shortage of the coating technician.

[0008] In reality, there is a demand for an emulsion paint for interior and exterior of buildings having good finish even if the skill level is low. However, the present inventors have attempted to solve various problems or disadvantages in the conventional technology as described above,
We worked diligently to solve the problem.

[0009] Therefore, the object of the present invention is to provide a thin-film coating type which has excellent coating workability without impairing the toning property. An object of the present invention is to provide an emulsion paint for interior and exterior use of a building, which is excellent in coating workability including attachment.

[0010]

Means for Solving the Problems Accordingly, the present inventors have:
Focusing on the problems to be solved by the invention as described above, as a result of diligent and intensive studies, focusing on the type and ratio of the emulsifier used in the synthetic resin emulsion, and appropriately balancing the particle diameter and the surface tension. By starting,
They have found that they can be solved, and have now completed the present invention.

That is, the present invention provides a synthetic resin emulsion obtained by emulsion-polymerizing a vinyl monomer in the presence of an emulsifier comprising a polyoxyalkylenestyrenated phenyl ether and an anionic emulsifier. The particle size is 120-350 nanometers,
Another object of the present invention is to provide an extremely novel emulsion paint for interior and exterior of buildings, characterized by using a synthetic resin emulsion having a surface tension of 42 to 49 dynes / cm as a binder.

The polyoxyalkylenestyrenated phenyl ether used in the present invention is selected from ethylene oxide, propylene oxide and the like as the alkylene oxide, and preferably has an average addition mole number of 2 to 130 moles. But preferably,
Those having a range of 5 to 100 mol are suitable, and these may be used alone or in combination of two or more.

When emulsion polymerization was carried out using a polyoxyalkylenestyrenated phenyl ether out of the above-mentioned specific range, all resulted in the formation of aggregates, and a favorable emulsion could not be obtained.

An emulsifier which is mainly composed of polyoxyalkylenestyrenated phenyl ether and which can be used in combination is an anionic emulsifier. If only typical representative examples of such anionic emulsifiers are given, examples thereof include alkali metal salts of alkyl benzene sulfonic acid, alkali metal salts of alkyl sulphate and alkali metal salts of polyoxyethylene alkyl phenol sulphate. Those which show an emulsifying action by copolymerizing a salt or styrene sulfonate are also included.

[0015] The polyoxyalkylene styrenated phenyl ether and the anionic emulsifier are generally used in a weight ratio of solids, that is, polyoxyalkylene styrenated phenyl ether / anionic emulsifier = 50 to 95/5.
It is used at a solid content weight ratio of 0-5.

When the ratio of the polyoxyalkylene styrenated phenyl ether is 50 or less, a good emulsion can be obtained by carrying out emulsion polymerization.
An emulsion paint using it as a binder is inconvenient because it does not exhibit favorable coating workability, although it is excellent in toning.

When the ratio of the polyoxyalkylene styrenated phenyl ether is 95 or more, it is difficult to obtain an emulsion in a good state such as an increase in aggregates even if emulsion polymerization is carried out. Even if it is used, the coating workability of an emulsion paint using this as a binder is excellent, but the toning property becomes inferior.

The polymer resin constituting the main component of the synthetic resin emulsion according to the present invention may be any polymer of a vinyl monomer capable of emulsion polymerization, and is not particularly limited. Just to illustrate,
An acrylate resin, an acrylate copolymer resin, a styrene copolymer resin, a vinyl acetate resin, a vinyl acetate copolymer resin or an ethylene-vinyl acetate copolymer resin, etc., which are particularly suitable for the properties of the resulting film. is there.

Specific examples of the vinyl monomers used in these resins include various kinds of acrylic acid or methacrylic acid such as methyl acrylate, butyl acrylate, 2-ethylhexyl acrylate and methyl methacrylate. (Meth) acrylic esters; various vinyl halides, such as vinyl bromide, vinyl chloride or vinylidene chloride; various vinyl esters, such as vinyl acetate or vinyl propionate; various, such as styrene or vinyl toluene Vinyl aromatic monomers (aromatic vinyl monomers); various monoolefins or conjugated diolefins such as ethylene or butadiene;

2-hydroxyethyl (meth) acryle
2-hydroxypropyl (meth) acrylate, 3
-Hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 3-chloro-2-hydroxypropyl ( (Meth) acrylate or polyethylene glyco-
Various hydroxyl-containing monomers, such as lumono (meth) acrylate;

Various carboxylic acid amides represented by (meth) acrylamide, N, N-dimethyl (meth) acrylamide, N-alkoxymethylated (meth) acrylamide, diacetone acrylamide or N-methylol (meth) acrylamide Group-containing monomers;
Various tertiary amino group-containing monomers, such as N, N-dimethylaminoethyl (meth) acrylate or N, N-dialkylaminoalkyl (meth) acrylates;
(Meth) Cyano group-containing monomers represented by acrylonitrile and the like; or various unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, maleic acid or fumaric acid, depending on the application, It is a matter of course that one kind or a combination of two or more kinds may be used.

Further, if desired, various monomers having two or more unsaturated double bonds in one molecule, such as diallyl phthalate, divinylbenzene, allyl acrylate or trimethylolpropane triacrylate;
Various vinyl alkoxy such as vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropylmethoxysilane or γ-glycidoxypropylmethyldiethoxysilane Silanes; alternatively, glycidoxyalkoxysilanes can also be used.

In the preparation of the emulsion paint for interior and exterior of buildings of the present invention, only typical examples of polymerization initiators used in the emulsion polymerization are exemplified. Various water-soluble peroxides or persulfates such as ammonium sulfate, sodium persulfate or hydrogen peroxide; various organic peroxides such as cumene hydroperoxide or benzoyl peroxide; or azobisisobutyro Various azo compounds such as nitriles,

If necessary, various reducing agents such as sodium bisulfite, ascorbic acid, tartaric acid or sodium thiosulfate may be used in combination with metal ions such as iron and copper.

These polymerization initiators are used in the range of 0.1 to 2% by weight based on the total amount of monomers. As a method for producing the synthetic resin emulsion of the present invention, a conventionally known emulsion polymerization means that forms particles having a homogeneous structure, an intermittent multilayer structure, or a continuous multilayer structure can be applied.

That is, for example, a polyoxyalkylenestyrenated phenyl ether and an anionic emulsifier are used in an amount of 0.5 to 10% by weight based on the total weight of the monomers (total monomer weight). At a temperature in the range from room temperature to 95 ° C., the solid content is usually 40 to 70.
%, And the viscosity is not particularly limited.

If necessary, a pH adjuster or a polymerization degree adjuster may be used. They are appropriately added and used depending on the use. The particle size of the synthetic resin emulsion used in the present invention is usually from 120 to 350.
Used within the nanometer range.

[0028] The particle diameter referred to here refers to a particle diameter measured by an adaptive light scattering method using laser light as a light source. [“Coulter Counter (C
When the particle size is less than 120 nanometers, the emulsion paint using this as a binder becomes a thixotropic state and does not exhibit desired coating workability. On the other hand, when the particle size exceeds 350 nanometers, the shelf stability of the emulsion itself is poor, and further, the pigment miscibility of the emulsion paint obtained using such an emulsion as a binder is poor, and the toning property is extremely poor. In any case, it is not preferable.

The surface tension of the synthetic resin emulsion is as follows:
Used in the range of 42-49 dynes / centimeter. The surface tension referred to here refers to the value of a 5% synthetic resin emulsion when the value of water measured at 20 ° C. with a platinum plate is 72.8 dynes / cm. . [That is, a fully automatic parallel electro-surface tensiometer “ESB” manufactured by Kyowa Chemical Co., Ltd.
This is the value measured with type IV. When the surface tension is less than 42 dynes / centimeter, an emulsion paint using this as a binder inevitably generates many bubbles at the time of coating and at the time of coating.
This is where the toning property and the coating workability are significantly reduced. On the other hand, when the surface tension exceeds 49 dynes / centimeter, the emulsion paint using this as a binder tends to have poor wettability with the pigment, and furthermore, the tonality and the stability of the paint are lowered. Become.

The thus-obtained emulsion paint for building interior and exterior according to the present invention contains, in addition to the essential component, the synthetic resin emulsion, if necessary, a pigment, a dispersant, a wetting agent, and a film-forming aid. , A solvent, a plasticizer, an antifreezing agent, a preservative, a fungicide, an antifoaming agent, a thickener or a short fiber, and the like, and the paint of the present invention may be obtained by a conventional method. It is.

The pigments include heavy calcium carbonate, light calcium carbonate, magnesium carbonate, precipitated barium sulfate, mica, titanium oxide, and the like.
Inorganic pigments or extender pigments (fillers) such as cold water powder, rice powder, kaolin, clay, calcined clay, talc, silica sand, silica lime, ultrafine silica, white carbon, dolomite powder, zinc white or carbon black; or And organic pigments such as phthalocyanine, azo or quinacridone, and their dispersed pigments are particularly representative.

As the above-mentioned dispersants, salts of various phosphoric acid derivatives such as pyrophosphoric acid, tripolyphosphoric acid or hexametaphosphoric acid; or salts of polycarboxylic acids or salts of naphthalenesulfonic acid are particularly representative. Are listed.

Examples of the above-mentioned wetting agent include various anionic or nonionic surfactants. Also,
As the above-mentioned film-forming aid, "Chisso Sizer CS-1"
2 "[manufactured by Chisso Corporation], butyl carbitol acetate, butyl cellosolve, carbitol, hexylene glycol, cellosolve, dibutyl glycol phthalate, dibutyl phthalate, benzyl alcohol or diisopropyl succinate, and the like. Can be

The above-mentioned solvents include methanol, ethanol, propanol, ethyl acetate, butyl acetate, methyl ethyl ketone, methyl isobutyl ketone, toluene,
Xylene, hexane, heptane, cellosolve acetate, mineral spirit or terpen oil, etc.
Particularly typical ones are mentioned.

Examples of the plasticizer include various phthalic esters such as dioctyl phthalate; various aliphatic dibasic esters such as isodecyl succinate or dioctyl adipate; and tricresyl phosphate. Various phosphate esters such as diethylene glycol benzoate; various glycol esters such as epoxidized soybean oil; various epoxy plasticizers such as epoxidized soybean oil; and chlorinated paraffins are particularly representative. This is a typical example.

Further, as the above-mentioned antifreezing agent, ethylene glycol, propylene glycol, glycerin and the like are particularly representative. As the above-mentioned preservatives, organic iodine-based, organic bromine-based or thiazole-based preservatives are particularly typical.

As the above-mentioned fungicides, compounds such as benzimidazoles are particularly typical examples. As the above-mentioned antifoaming agent, silicones, higher alcohols, mineral oils or fatty acid amides are particularly typical examples, and as the above-mentioned thickener, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, xanthan gum, pol Ether polyurethane or polycarboxylates are particularly typical examples, and as the short fibers mentioned above, asbestos, pulp or glass wool, polyethylene fibers and the like are particularly typical examples.

The above-mentioned various additives are examples of particularly typical forms to the last, and are by no means limited to these. In addition, the amount of these additives, depending on the conditions and purpose of use,
It is determined as appropriate.

The emulsion paint for building interior and exterior according to the present invention includes concrete, mortar, ALC board, gypsum board,
It can be used as a general building material such as slate, calcium silicate board, hard board, asbestos cement board, iron board or aluminum board, as well as various basic equipment such as veneers and other wood materials. Depending on the case, it is also possible to apply the undercoating agent before coating.

As a coating method, if necessary, a general method such as brush coating, roller coating, air spray coating or airless spray coating can be applied after diluting to an appropriate viscosity with water.

[0041]

EXAMPLES The present invention will be described more specifically with reference examples, examples and comparative examples, but the present invention is not limited to only the following examples. In the following, parts and percentages are by weight unless otherwise specified.

Reference Example 1 (Preparation Example of Synthetic Resin Emulsion) 2-ethylhexyl acrylate 33 parts Methyl methacrylate 24.5 parts Styrene 40 parts Acrylic acid 2 parts Itaconic acid 0.5 part

Γ-methacryloyloxypropyltrimethoxysilane 0.2 part Polyoxyalkylenestyrenated phenyl ether (n = 10) 0.5 part Polyoxyalkylenestyrenated phenyl ether (n = 50) 3.5 parts Polyoxyethylene Nonylphenol ether (n = 6) sulfate soda 0.5 part Sodium styrene sulfonate 0.2 part

Ion-exchanged water 100.6 parts Ammonium persulfate 0.5 part Sodium bisulfite 0.5 part

In a 4-neck flask, 40 parts of ion-exchanged water was charged, the temperature was raised to 80 ° C. in a nitrogen stream, a polymerization initiator was added, and the polymerization monomer was dissolved in an aqueous emulsifier solution dissolved in the remaining water. The mixture was added dropwise over 3 hours with emulsification of the class.

At this time, the reaction temperature was controlled at 78 to 82 ° C. After the completion of the dropping, while maintaining the same temperature range for 2 hours,
The reaction was continued with stirring, then cooled and the pH was adjusted to 8-9 with 14% aqueous ammonia so that the solid content was 50.4%.
Thus, a stable synthetic resin emulsion having a particle diameter of 174 nanometers and a surface tension of 48 dynes / cm was prepared.

Reference Example 2 (same as above) 2.0 parts of polyoxyalkylenestyrenated phenyl ether (n = 10), 3.4 parts of polyoxyalkylenestyrenated phenylether (n = 50),
Except replacing sodium dodecylbenzenesulfonate with 3.6 parts and ion exchange water with 105.9 parts
The reaction was carried out in the same manner as in Reference Example 1.

As a result, a stable synthetic resin emulsion having a solid content of 50.0%, a particle diameter of 124 nanometers, and a surface tension of 42 dynes / cm could be prepared.

Reference Example 3 (same as above) 2-ethylhexyl acrylate 53.5 parts Butyl acrylate 20 parts Styrene 24.5 parts Acrylic acid 2 parts γ-methacryloyloxypropyltrimethoxysilane 0.1 part

Polyoxyethylene styrenated phenyl ether (n = 10) 1.0 part Polyoxyethylene styrenated phenyl ether (n = 50) 1.0 part Polyoxyethylene nonylphenol ether (n = 6) sulfate soda 0 copies

Ion-exchanged water 67.2 parts Ammonium persulfate 0.5 part Sodium sulfite 0.5 part

A four-neck flask was charged with 30 parts of ion-exchanged water, heated to 80 ° C. in a nitrogen stream, added with polymerization initiators, and further polymerized with an emulsifier aqueous solution dissolved in the remaining water. -Were emulsified and the mixture was added dropwise over 3 hours.

At this time, the reaction temperature was controlled at 78 to 82 ° C. After the completion of the dropping, while maintaining the same temperature range for 2 hours,
The reaction was continued with stirring, then cooled and the pH was adjusted to 8-9 with 14% aqueous ammonia so that the solid content was 60.5%.
A stable synthetic resin emulsion having a particle diameter of 300 nanometers and a surface tension of 46 dynes / cm was prepared.

Reference Example 4 (same as above) In each case, 2.0 parts of polyoxyalkylenestyrenated phenyl ether (n = 10), 3.0 parts of polyoxyalkylenestyrenated phenyl ether (n = 50) and dodecyl were used. 2.0 parts of sodium benzenesulfonate,
The reaction was performed by replacing 69.1 parts of ion-exchanged water.

As a result, a stable synthetic resin emulsion having a solid content of 60.3%, a particle diameter of 260 nanometers and a surface tension of 43 dynes / cm was prepared.

Reference Example 5 (Example of preparing synthetic resin emulsion for control) 2-ethylhexyl acrylate 33 parts Methyl methacrylate 24.5 parts Styrene 40 parts Acrylic acid 2 parts Itaconic acid 0.5 part γ-methacryloyl Oxypropyltrimethoxysilane 0.2 parts

Polyoxyalkylene styrenated phenyl ether (n = 10) 0.6 part Polyoxyalkylene styrenated phenyl ether (n = 50) 4.0 parts Sulfate soda of polyoxyethylene nonyl phenol ether (n = 6) 1 part Sodium styrene sulfonate 0.1 part

Ion-exchanged water 101.8 parts Ammonium persulfate 0.5 part Sodium bisulfite 0.5 part

In a 4-neck flask, 40 parts of ion-exchanged water was charged, the temperature was raised to 80 ° C. in a nitrogen stream, a polymerization initiator was added, and further, a polymerizable monomer was dissolved in an aqueous solution of an emulsifier dissolved in the remaining water. -Emulsified and the mixture was added dropwise over 3 hours.

At this time, the reaction temperature was controlled at 78 to 82 ° C. After the completion of the dropping, while maintaining the same temperature range for 2 hours,
The reaction was continued with stirring, then cooled and the pH was adjusted to 8-9 with 14% aqueous ammonia to give 49.7% solids.
Thus, a synthetic resin emulsion having a particle diameter of 470 nanometers and a surface tension of 51 dynes / cm was prepared.

Reference Example 6 (same as above) Polyoxyalkylene styrenated phenyl ether (n = 10) was added to 1.4 parts, polyoxyalkylene styrenated phenyl ether (n = 50) was added to 2.2 parts, and dodecyl was used. 5.2 parts of sodium benzenesulfonate
The reaction was performed by replacing 106.1 parts of ion-exchanged water.

As a result, it was possible to prepare a synthetic resin emulsion having a solid content of 50.0%, a particle diameter of 100 nanometers, and a surface tension of 37 dynes / cm.

Reference Example 7 (same as above) 2-ethylhexyl acrylate 53.5 parts Butyl acrylate 20 parts Styrene 24.5 parts Acrylic acid 2 parts γ-methacryloyloxypropyltrimethoxysilane 0.1 part

Polyoxyethylene styrenated phenyl ether (n = 10) 0.5 part Polyoxyethylene styrenated phenyl ether (n = 50) 1.0 part Sulfate soda of polyoxyethylene nonyl phenyl ether (n = 6) 2 5.5 parts Ion-exchanged water 67.2 parts Ammonium persulfate 0.5 part Sodium sulfite 0.5 part

A 30-neck flask was charged with 30 parts of ion-exchanged water, the temperature was raised to 80 ° C. in a nitrogen stream, a polymerization initiator was added, and a polymerizable monomer was dissolved in an emulsifier aqueous solution dissolved in the remaining water. -Emulsified and the mixture was added dropwise over 3 hours.

At this time, the reaction temperature was controlled at 78 to 82 ° C. After the completion of the dropping, while maintaining the same temperature range for 2 hours,
The reaction was continued with stirring, then cooled and the pH was adjusted to 8-9 with 14% aqueous ammonia, resulting in a solids content of 59.6%.
Thus, a synthetic resin emulsion having a particle diameter of 100 nanometers and a surface tension of 40 dynes / cm was prepared.

Reference Example 8 (same as above) Polyoxyalkylene styrenated phenyl ether (n = 10) was added to 3.0 parts, polyoxyalkylene styrenated phenyl ether (n = 50) was added to 3.7 parts, and decyl The reaction was carried out by replacing 0.3 parts of sodium benzenesulfonate with 69.1 parts of ion-exchanged water.

As a result, a synthetic resin emulsion having a solid content of 59.5%, a particle diameter of 420 nanometers, and a surface tension of 50 dynes / cm could be prepared.

Examples 1 to 4 and Comparative Examples 1 to 4 Each of the synthetic resin emulsions obtained in Reference Examples 1 to 8 was formed into a paint with the composition shown in Table 1.

Thereafter, the paint was evaluated in the following manner. The results are, collectively,
It is shown in the table.

[0071]

[Table 1]

[0072]

[Table 2]

Color development: After coating on Kent paper with a 3 mil applicator, it was immediately rubbed with a finger, and after drying, the difference in color between the portion not rubbed and the color was compared.

：: There is almost no color difference. X: There is a remarkable color difference. Tonality ..... A slate plate with only half a sealer, and a paint diluted to about 70 KU with water. After pillowing with a brush and drying, it was coated twice with a roller.
Further, after the surface was dried, touch-up was performed on the sealer portion and the portion without the sealer with a brush, respectively, and one day later, comprehensive evaluation was made based on color unevenness and roller marks.

○: Almost no color unevenness and roller mark ×: Remarkable color unevenness and roller mark are recognized Coating workability 1... After being formed into a paint without the coloring pigment, white paint was applied. A slate plate diluted to about 72 KU and half-sealed was brush-applied, and comprehensively determined from fogging, brush weight, leveling, and the like.

：: The weight of the brush was heavy, and the fogging and leveling were good. X: The weight of the brush was light, the fogging was bad, and the leveling was remarkably bad. Coating workability 2: diluted to about 25,000 cps The paint is applied to a seamless slate plate with a sealer with a high-viscosity tile gun (caliber = 6 mm; air pressure = 4 kg / square centimeter), and the seamless portion is painted at a rate of about 1 kg / sq. Judging comprehensively from the surface smoothness after drying.

：: No sagging, smooth surface ×: Slight sagging, and uneven surface Coating workability 3: A slate plate similar to that of coating workability 2 is set upright Then, using a high-viscosity tile gun (calibration = 8 mm; air pressure = 2 kg / cm 2), paint diluted to about 35,000 cps was applied to about 1
The paint was applied at a rate of kilograms / square centimeter, and the overall evaluation was made from both dust and patterns.

：: Slight dust and slight convex pattern Δ: Slight dust but low mountain pattern due to sagging ×: Lots of dust and , Has a low pattern of uneven mountains

The components described in Table 1 are as follows. Dispersant 1 "DKS Discoat N-14"
[Daiichi Kogyo Seiyaku Co., Ltd.] Dispersant 2 ... "Demol EP" [Kao Corporation] Preservatives ... "Best Side FX" [Dainippon Ink Chemical Industry Co., Ltd.] Antifoaming agent: "SN Deformer 373" (product of San Nopco Co., Ltd.) Titanium oxide 1 "Taipec R-930" (product of Ishihara Sangyo Co., Ltd.) Titanium oxide 2 ... "Titanic" SU JR600 ”[product of Teikoku Chemical Industry Co., Ltd.] Calcium carbonate 1…“ Carbon Cal NS100 ”[product of Nitto Powder Co., Ltd.] Calcium carbonate 2…“ carbon char SS30 ”[product of Nitto Powder Co., Ltd.] Fibers …………… “Cell Top HP103”
[Kojin Products Co., Ltd.] Thickener 1 3% “Cellosize QP4400
H "(product of Union Carbide Co., Ltd.) Thickener 2 15%" ADEKANOL UH43 "
8 "[Asahi Denka Co., Ltd. product] Thickener 3 5%" High Metrose 90SH4 "
000 "[product of Shin-Etsu Chemical Co., Ltd.] Film-forming aid:" Texanol "(Eastman) Color pigment:" Disperse color "(black / red / yellow = 1/1/1) [Products of Dainippon Ink and Chemicals, Inc.]

As is clear from the table, the emulsion paint for building interior and exterior according to the present invention has a thin film coating type.
It is known that the coating workability is excellent without impairing the toning property, and that the thick film coating type is excellent in coating workability including patterning.

[0081]

The emulsion paint for building interior and exterior according to the present invention, in the case of a thin film coating type, does not impair the toning property at all, and is particularly excellent in coating workability and the like. The film coating type has excellent finishability, especially when used as a coating material for interior and exterior of buildings because of its excellent coating workability including patterning. Unlike an emulsion paint for building interior and exterior, it does not require a skilled painting technique, is easy to paint, and has excellent finish.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-55176 (JP, A) JP-A-4-298573 (JP, A) WO 91/2775 (WO, A1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) C09D 5/02 B01F 17/42-17/48 C08F 2/30 C09D 171/02-171/03

Claims (2)

(57) [Claims] 1. A synthetic resin emulsion obtained by emulsion-polymerizing a vinyl monomer in the presence of an emulsifier comprising a polyoxyalkylenestyrenated phenyl ether and an anionic emulsifier, wherein the synthetic resin has an average particle size of 1%.
20 to 350 nanometers and a surface tension of 42
An emulsion paint for interior and exterior of buildings, characterized by using a synthetic resin emulsion of up to 49 dynes / centimeter as a binder. 2. The emulsifier according to claim 1, wherein the polyoxyalkylene styrenated phenyl ether / anionic emulsifier = 50.
The emulsion paint for interior and exterior of buildings according to claim 1, wherein the mixture is a mixture having a solid content weight ratio of from 95 to 50/5.