JPH10101967A - Primer composition for forming wall surface of building and method for forming wall surface of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a primer composition used for forming the wall surface of a building, reduced in the time and labor required to apply a finish coating putty and being nonproblematic in environmental pollution and to provide a method for forming the wall surface of a building. SOLUTION: This composition contains 10-90wt.% synthetic resin emulsion having a particle diameter of 0.1-1μm. The emulsion has a viscosity of 100-100,000 cP, a PVC content of 40-80wt.%, a P/B of 100/100 to 1,000/100, and such high build-up properties that the dry film thickness is 0.2mm or above. The method for forming the wall surface of a building by using building boards comprises treating the joint between boards (b) with putties 2, 3 and 4 and applying the primer composition 101 over the entire surfaces of the boards to enable finish coating without applying putties over the entire surfaces of the boards and without polishing the surfaces of the applied putties.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base coating composition for forming a building wall and a method for forming a building wall.
More specifically, by providing a groundbreaking paint preparation composition and a method for forming architectural walls in the paint finishing of architectural walls, the technical issues of putty construction in conventional architectural painting have been solved, It is an object of the present invention to provide a base adjustment paint composition for forming a building wall surface and a method for forming a building wall surface, in which the steps and operation time are significantly reduced, the work labor is reduced, and the environmental pollution source is significantly reduced.

[0002]

2. Description of the Related Art Paint finishing work on the wall surfaces of ordinary houses, apartment houses and middle and high rise buildings is usually performed in the following ten steps. The outline of the process will be described with reference to FIGS. 1 to 4 which schematically show the state of the cross section at each stage of this work process.

[Step (1)] A building board b, such as a calcium silicate plate or plaster board (gypsum board), is attached to a building frame (not shown) (FIG. 1). [Step (2)] A joint tape 1 made of glass fiber or the like (having a side of about several mm) made of glass fiber or the like is applied to the joints of the boards b and b. Material (undercoat putty) 2 is painted using a spatula,
A base treatment is performed (FIG. 1). [Step (3)] After the undercoat putty is dried, the putty treatment 3 is further performed on the thin part (the part where the moisture of the putty has evaporated) 21 (FIG. 2). [Step (4)] Polishing is performed with sandpaper in order to smooth the seam portion that has been subjected to the above processing. [Step (5)] Since the above-mentioned undercoat putty has a rough coating surface, the middle coat putty 4 is coated with a spatula (FIG. 3). [Step (6)] To adjust the coating surface of the intermediate coating putty 4, polishing is performed with sandpaper. [Step (7)] An overcoat putty 5 is applied to the entire surface of the board including the middle coat putty 4 with a spatula (FIG. 4). [Step (8)] After drying, polishing is performed with sandpaper. In this polishing, the overcoat putty 5 is polished to a thickness of about half.
4 in FIG. 4 shows the surface of the overcoated putty after polishing. [Step (9)] In order to prevent the suction of the top coating paint and to improve the adhesion to the top coating putty, a sealer coating 7 is performed on the top coating putty (FIG. 5). [Step (10)] Finally, the top coat 8 is applied (FIG. 5).

The above steps will be described in more detail. In step (7), the overcoat putty conventionally used is a synthetic resin emulsion putty whose main composition is a vinyl acetate emulsion, and a copolymer of vinyl acetate and acrylic. Polymerized emulsion, solid content 60% by weight or more, viscosity 200,000 cp, P
/ B 1,000 / 100 or more is common. this is,
Since it is a paste, it is usually coated with a spatula to a thickness of about 0.5 mm to fill dents and irregularities on the painted surface.
This spatula painting requires a lot of labor, especially
In (7), a large amount of labor is required to apply a spatula to the entire board. In addition, drying takes about 4 hours or more.

[0005] After drying, in step (8), the entire surface is polished with sandpaper to smooth the surface.
Polished to about 1/2 the thickness of the overcoat putty. The required time is approximately 2 to ² per worker per 100m2 of wall area.
It takes three hours. Also, the thickness of this overcoat putty is
The paint is applied with a thickness of 0.5 mm as described above, but the overcoat putty solid content of about half the thickness (about 0.25 mm thickness) is polished. Assuming that the specific gravity is 2.8, about 70 kg of the topcoat putty solids per 100 m ^{2 of} the wall area will be diffused as dust around the work area. This will significantly damage the surrounding environment and will also adversely affect the health of the workers.

[0006]

As described above, in the conventional method, a lot of work time and labor are required in the steps (7) and (8) relating to the above-mentioned putty putty, and a large amount of dust can be added. The outbreak causes environmental pollution. Then
An object of the present invention is to provide a base adjustment paint composition for forming a building wall surface and a method for forming a building wall surface, which eliminates the work time and labor concerning an overcoat putty and does not cause a problem of environmental pollution. More specifically, the above steps (7) (8) (9)
More desirably, the steps (5), (6), (7), (8) and (9) are completed in one step, so that a large amount of work time, labor and coating cost can be reduced, and generation of dust due to polishing can be reduced. It is an object of the present invention to provide a rational base adjustment coating composition and a method for forming a building wall surface which are prevented.

[0007]

According to the present invention, there is provided a method comprising:
(1) to (4) are unavoidable steps, but the steps (7) and (8) for the overcoat putty, and more preferably the steps (5), (6), (7) and (8) for the middle coat putty and the topcoat putty If it can be omitted, many problems concerning putty painting and polishing can be solved. The inventors of the present application have paid attention to this point, and as a result of intensive research, discovered that the purpose can be achieved by using a synthetic resin emulsion composition having certain physical properties comprehensively, Based on this discovery, the present invention has been completed. The paint containing the emulsion is referred to as “base adjustment paint” in the present invention, and the present invention provides a base adjustment paint composition and a method for forming a building wall using the base adjustment paint composition.

In the first invention of the present application, the particle diameter is 0.1 to 1
μ, wherein the viscosity of the synthetic resin emulsion is 100 to 10
A base adjustment coating composition for forming a building wall, characterized in that the coating has a thickness of 000 cp and a thickness of 0.1 mm or more when dried. Here, the term “thickness indicating that the film thickness when dried is 0.1 mm or more” means a property that a coating film having a film thickness when dried is 0.1 mm or more can be formed by one application. I do.

According to a second aspect of the present invention, there is provided an undercoat paint composition for forming a building wall according to the first aspect.
It contains 10 to 90% by weight of acrylic emulsion, vinyl acetate emulsion, styrene / acrylic copolymer emulsion or acrylic / vinyl acetate copolymer emulsion, 40 to 80% by weight of PVC and 100/10 of P / B.
0 to 1,000 / 100, and the film thickness when dried is 0.2
2. A material having a thickness of not less than mm.
A ground conditioning coating composition for forming a building wall according to the above description. Here, the term “thickness” in which the film thickness when dried is 0.2 mm or more means the property that a coating film having a film thickness when dried is 0.2 mm or more can be formed by one application. I do.

[0010] The third invention of the present application is the base adjustment paint composition for forming a building wall according to the first invention,
10-90% by weight acrylic emulsion, styrene /
Contains acrylic copolymer emulsion or acrylic / vinyl acetate copolymer emulsion, 60% by weight or more of fixed component, 45-70% by weight of PVC, 200/10 of P / B
The ground conditioning coating composition for forming a building wall according to claim 1, wherein the composition is 0 to 700/100.

According to a fourth aspect of the present invention, in a method of forming a building wall using a building board, a putty treatment is performed on a joint portion of the board, and the first and second embodiments of the present invention are applied to the entire surface of the board including the putty treated portion. By performing the coating using the base adjustment coating composition according to the second or third invention, it is possible to perform a top coating without performing a putty coating on the entire board and a polishing step of the putty coated surface. Provided is a method for forming a building wall using a building board.

The undercoat coating composition according to the present invention having the above physical properties has a thickness of at least 0.1 mm, preferably at least 0.2 mm.
Thickness greater than or equal to the thickness can be provided, and the smoothness of the coating film surface can be equal to that of the conventional sealer coating. As a result, without applying both the top coat putty, and more preferably both the middle coat putty and the top coat putty, the base coat is only applied by a paint application method such as brush, roller, spraying, etc. It is possible to perform a base adjustment equivalent to a painted state.

As the emulsion resin used in the present invention, various emulsion resins such as an acrylic emulsion, a vinyl acetate emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion can be used. Particularly, an acrylic emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion is preferred.

The radical polymerizable monomers used in these emulsion resins include, for example, methyl (meth)
Acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, acrylonitrile, 2-hydroxyethyl (meth) acrylate, divinylbenzene, styrene, methylstyrene, vinyl chloride, Examples include, but are not limited to, vinyl acetate, acrylic acid, methacrylic acid, and the like.

As the emulsifier, anionic, nonionic, a combination of anionic and nonionic, cationic and amphoteric emulsifiers can be used. Examples of the anionic emulsifier include higher alcohol sulfate sodium salt, alkylbenzene sulfonate sodium salt, dialkyl succinate sodium sulfonate, and alkyl diphenyl ether disulfonate. Examples of the nonionic emulsifier include polyoxyethylene alkyl allyl ether and the like, and examples of the cationic emulsifier include alkylpyridinyl chloride and alkylammonium chloride. Further, a reactive emulsifier or the like may be used. The emulsifier is used in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the polymerizable monomer.

As the polymerization initiator, water-soluble persulfate,
For example, potassium persulfate, sodium persulfate, ammonium persulfate and the like are used. Other examples of the oil-soluble polymerization initiator include, for example, 2,2′-azobisisobutyronitrile and 2,2′-azobis (4-methoxy-2,4
-Dimethyl valeronitrile) and the like, and organic oxidative polymerization initiators such as benzoyl peroxide and butyl peroxide.

The base coating composition according to the present invention includes:
As the extender, calcium carbonate, magnesium hydroxide, aluminum hydroxide, barium sulfate, mica, talc, kaolin, silicic acid, silicate, magnesium carbonate, and the like, and combinations thereof are used. Further, titanium oxide, iron oxide, carbon black and various organic pigments are used as the coloring pigment.

In some cases, as a primary rust inhibitor or a rust preventive pigment such as sodium benzoate for rust prevention of nails or the like,
Zinc chromate, strontium chromate, aluminum phosphate, barium metaborate, and the like, and combinations thereof can also be used. In addition, in addition to the above, an antifoaming agent, a thickening agent, a dispersing agent, an antifreezing agent, a film-forming aid, a preservative, a fungicide, and the like can be used in the base coating composition.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, a method for forming a building wall surface using a base coating composition according to the present invention will be described with reference to the drawings. It should be noted that the same steps as those in the related art are referred to the drawings described in the above-described related art.

[Step (1)] Calcium silicate board, plaster board (gypsum board), plywood and other construction boards b,
b is attached to a building framework (not shown) (FIG. 1). [Step (2)] A joint tape 1 made of glass fiber or the like is applied to the joint between the boards b and b, and a joint treatment material for gypsum board (undercoat putty) 2 is applied from above using a spatula. A base treatment is performed (FIG. 1). [Step (3)] After the undercoat putty is dried, the putty treatment 3 is further performed on the thinned portion 21 (the thinned portion of the putty due to evaporation of moisture) (FIG. 2). [Step (4)] Polishing is performed with sandpaper in order to smooth the seam portion that has been subjected to the above processing. [Step (5)] Since the above-mentioned undercoat putty has a rough coating surface, the middle coat putty 4 is coated with a spatula (FIG. 3). [Step (6)] To adjust the coating surface of the intermediate coating putty 4, polishing is performed with sandpaper.

The above steps are the same as the conventional steps.
Next, as a specific process of the present invention, the above-mentioned base adjustment paint 101 is applied by a paint application method such as brush, roller, spraying or the like (FIG. 6). Thereby, as shown in Examples described later, it is possible to obtain a coating film having a thickness of about 0.25 mm, which is comparable to the thickness of both the conventional overcoat putty and the sealer coating, and has a smoothness equivalent to that of the sealer coating. It was possible to obtain something with the property.

Finally, similarly to the conventional process (10), the top coat 8 is applied to complete the painting of the building wall (FIG. 6). In the above example, steps (5), (6)
After performing the process for the intermediate coating putty, the base adjustment paint was applied.However, it is also possible to apply the base adjustment paint on the undercoat putty by omitting the steps (5) and (6) regarding the intermediate coating putty. is there.

[0023]

[Test method] As described above, the base adjustment paint composition according to the present invention is applied by the method described in the above-described embodiment and the like, thereby omitting the putting process using a spatula and the polishing step. What you want to do. Therefore, in this coating composition, the coating film has a thickness of 100 μm.
The above thickness is indispensable, and more preferably, the thickness is preferably 200 μm or more, and the state of the coated surface must be smooth and uniform. The upper limit of the coating is not particularly limited, but does not need to exceed about 400 μm. In addition, from the place where performance suitable for groundwork adjustment at the construction site is required, we decided to conduct tests with the following unusual test items and compare and evaluate their suitability. .

"Roller skin test" This is intended to observe the leveling property and smoothness after coating. The state of finish after roller coating is observed, and the degree of the finish is evaluated in the order of △ x. Hereinafter, the evaluation procedure is the same.

"Substrate suction test" The base putty at the joint part of the plaster board has a strong suction property, and after coating, unevenness occurs on this part of the wall surface. The appearance of this is observed and evaluated. This is affected by the P / B and the film thickness. If the P / B is small, it is difficult to absorb the film, but if the P / B is too small, the film thickness cannot be obtained.

"Coating workability test" When coating with a roller or brush, the larger the amount of paint contained in the roller or brush, the wider the area can be coated at once and the better the coating workability. This depends on the thixotropic properties of the paint. If the thixotropic coefficient is too high, the amount of paint contained in the roller or brush decreases. Also, it will not be possible if it is too low.

"Underground fluffiness test" In the case of a plaster board, paper is stuck on the surface of the plaster side. When the putty at the joint is polished, the paper becomes sprinkled. However, if the thickness of the paint applied on this is small, the fluffing remains. The presence or absence of this fluff is observed.

"Film thickness" Depends on P / B, the larger the P / B value, the larger the coated surface, but at the same time, the leveling property tends to decrease. In the evaluation, ○ indicates that a film thickness of 200 μ or more was obtained during drying, and △ indicates that a thickness of 100 μ
X means that a film thickness of less than μ was obtained, and X means that a film could not be formed or a film thickness of less than 100 μ was obtained.

[0029]

EXAMPLES Table 1 shows the monomer composition ratios of the synthetic resin emulsions A to F used for the base preparation paint. In the description of the examples, parts or% indicate parts by weight or% by weight, unless otherwise specified. In addition, the unit of the numerical value of the blending amount in each table is parts by weight. The synthetic resin emulsion A shown in Table 1 was used.
To F have a solid content of 50% and an average particle size of the emulsion of 0.1 to 1 μm.

[0030]

[Table 1]

Polymerization Method (Part 1) With respect to emulsions A to D in Table 1, a polymerization reaction was carried out by the following method. Attach a stirrer and a thermometer to the four-necked flask, and add 50 parts of water, 0.2 parts of sodium dodibenzenebenzenesulfonate, 0.2 parts of polyoxyethylene nonyl ferfether.
8 parts, 0.3 parts of potassium persulfate were charged, and under a stream of N ₂ gas,
The mixture was heated with stirring at 80 ° C., and the monomers shown in Table 1 were mixed at the respective composition ratios and the solid content after the completion of the reaction was 50%.
Is reacted dropwise at 80 ° C. over 3 hours. After completion of the dropwise addition, the mixture is heated and aged at 80 ° C. for 2 hours. After cooling, 0.1 part of aqueous ammonia was added, and the mixture was filtered through a 200 mesh wire net to obtain an emulsion having an average particle size of about 0.3 μm.

Polymerization Method (Part 2) Emulsions E and F in Table 1 were reacted under the same conditions as above, but 0.5 part of hydroxyethyl cellulose was added as a protective colloid. The reaction was carried out as described above to obtain an emulsion having an average particle size of about 0.5μ.

Base Adjustment Paint Table 2 shows the compositions of the base adjustment paints prepared by using the above emulsions A to F and adding pigments and various additives thereto. In addition, Table 3 comparing the effect of the resin composition on the performance of the base preparation paint shows the performance test results when the type of pigment was changed. Table 4 shows the relationship between the P / B and PVC values and the performance test results.

The undercoat paints having the compositions shown in Tables 2 to 4 (Examples 1 to 13 and Comparative Examples 1 to 6) were applied to the step (6) (intermediate putty 4) shown in the embodiment of the invention described above. The entire surface of the building board (plaster board) including the surface of the intermediate coating putty 4 which had been subjected to polishing with sandpaper for adjusting the coating surface was coated with a roller. The thickeners to defoamers shown in Tables 3 and 4 are the same as the thickeners to defoamers in Table 2, and are listed in the respective columns from the thickeners to defoamers in Table 2. Adekanol UH-462 is Asahi Denki, High Metroise 65-SH-4000 is Shin-Etsu Chemical, Demol E
P is Kao product, STP is Mitsui Chemicals product, Suraoff 72N
Is a Takeda Pharmaceutical product, Texanol is an Eastman Chemical product, and Nopco 8034 is a San Nopco product.

[0035]

[Table 2]

[0036]

[Table 3]

[0037]

[Table 4]

From the results of these tests, the coating compositions of the examples can form a coating film of 100 μm or more, and all of them can be used as the base coating composition of the present invention. Above all, those using an acrylic emulsion are capable of forming a coating film of 200 μ or more, and particularly contain a styrene / acrylic copolymer emulsion,
PVC is 45-70%, P / B is 200 / 100-70
It was confirmed that the ratio was preferably 0/100.

[0039]

According to the first invention of the present application, it has been possible to provide a base adjustment paint composition for forming a building wall surface which eliminates the work time and labor concerning the overcoat putty and does not cause a problem of environmental pollution. Things. According to the second invention of the present application, it is possible to form a coating film having a thickness of 0.2 mm or more, which is comparable to the thickness of a conventional top coating putty, eliminating the work time and labor related to the top coating putty, and also causing a problem of environmental pollution. The present invention has been able to provide a primer-adjusting coating composition for forming an architectural wall surface without any problem. The third invention of the present application is capable of forming a coating film having a film thickness of 0.2 mm or more comparable to the film thickness of the conventional top coating putty and also having an extremely good coating surface condition. It is an object of the present invention to provide a base adjustment paint composition for forming a building wall surface which saves time and effort and does not cause a problem of environmental pollution.
In addition, the fourth invention of the present application aims to reduce a great amount of work time, labor and coating cost, and furthermore, a method for forming a building wall surface using a reasonable ground preparation paint composition which prevents generation of dust due to polishing. It was something that could be provided.

[Brief description of the drawings]

FIG. 1 is a schematic view showing steps (1) and (2) of a conventional method for forming a building wall.

FIG. 2 is a schematic view showing steps (3) and (4) of a conventional method for forming a building wall.

FIG. 3 is a schematic view showing steps (5) and (6) of a conventional method for forming a building wall.

FIG. 4 is a schematic view showing steps (7) and (8) of a conventional method for forming a building wall.

FIG. 5 is a schematic view showing steps (9) and (10) of a conventional method for forming a building wall.

FIG. 6 is a schematic view showing a main part of a method for forming a building wall according to the present invention.

[Explanation of symbols]

 b Building Board 1 Joint Tape 2, 3 Undercoat Putty 4 Intermediate Putty 5 Topcoat Putty 7 Sealer Painting 8 Topcoat Painting 101 Base Adjustment Paint

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI C09D 131/04 C09D 131/04 Z 133/06 133/06 E04F 13/02 E04F 13/02 K (72) Inventor Keiichiro Zen Tokyo 2-37-2 Minamisuna, Koto-ku, Tokyo Rock Paint Co., Ltd. Tokyo Branch (72) Inventor Hiroshi Matsui 2-37-2 Minamisuna, Koto-ku, Tokyo Rock Paint Co., Ltd. Tokyo Branch

Claims (4)

[Claims] 1. A coating composition containing a synthetic resin emulsion having a particle diameter of 0.1 to 1 μm, wherein the synthetic resin emulsion has a viscosity of 100 to 100,000 cp and a dry film thickness of 0.1. A base adjustment paint composition for forming architectural wall surfaces, having a thickness of 1 mm or more. 2. An acrylic emulsion, a vinyl acetate emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion containing 10 to 90% by weight of PVC, 40 to 80% by weight of PVC,
2. The base adjustment for forming a building wall according to claim 1, wherein the coating has a thickening property such that / B is from 100/100 to 1,000 / 100 and the film thickness when dried is 0.2 mm or more. Paint composition. 3. An acrylic emulsion, a styrene / acrylic copolymer emulsion or an acrylic / vinyl acetate copolymer emulsion in an amount of 10 to 90% by weight, wherein the fixed content is 60% by weight or more, PVC is 45 to 70% by weight, P
The base coating composition for forming a building wall according to claim 1, wherein / B is from 200/100 to 700/100. 4. A method of forming a building wall using a building board, wherein a putty treatment is performed on a joint portion of the board, and the underlay adjustment according to claim 1, 2 or 3 is performed on the entire surface of the board including the putty treatment portion. A method for forming an architectural wall surface using an architectural board, characterized in that by applying a coating using a paint composition, it is possible to apply a top coat without performing a putty coating on the entire board and a polishing step of the putty coated surface. .