JPH09221613A - Paint for forming multi color pattern, production of paint for forming multicolor pattern and coating film having multicolor pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject paint containing a water base dispernt and particles derived from a specific solvent base paint, having high dispersion stability of the particles and giving a coating film having good texture. SOLUTION: This coating material contains (A) a water-based dispersing medium and (B) particles of solvent-based coating materials having two or more colors and dispersed in the component A. The component B contains (i) a film-forming resin, (ii) an organic solvent, (iii) a colorant and (iv) balloons. Preferably, the component B has a specific gravity higher than that of the component A, the specific gravity difference between the component A and the component B is >=0.15, the content of nonvolatile component is 50.0-70.0wt.% and the component (iv) is balloons free from liquid-impregnating property. The coating material is preferably produced by preparing the component B containing the component (i) to the component (iv) and dispersing the component B in the component A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint, a method for producing the same, and a coating film, and more particularly, to a paint for forming a multicolor pattern, a method for producing a paint for forming a multicolor pattern, and a multicolor paint film.

[0002]

2. Description of the Related Art In many cases, the inner wall and outer wall of a building are designed with a multicolored paint film. Here, the multicolored coating film refers to a coating film having a multicolored and multicolored non-uniform color pattern, such as a sandstone tone pattern such as granite. A paint for forming a multicolor pattern for forming such a multicolor pattern coating film is usually one in which colored paint particles of several kinds of colors are dispersed in an aqueous dispersion medium, and the mixing ratio of the color paint particles is By adjusting, it is possible to form multicolored coating films of various design tones. The colored paint particles are usually solvent-based paints that mainly contain a film-forming resin, an organic solvent, and a colorant.

By the way, the above-mentioned multicolor pattern forming paint is
Usually, it is applied by a spray coating method in which colored paint particles can be randomly sprayed onto an object to be coated such as an inner wall and an outer wall of a building. For this reason, in the multicolor pattern forming coating material, the colored coating material particles need to be uniformly and stably dispersed throughout the dispersion medium. This is because, for example, when the colored paint particles tend to settle in the dispersion medium, it is difficult to stably apply the colored paint particles during spray coating, and the desired multicolor pattern coating film is not formed or coating unevenness occurs. This is because the appearance of the multi-colored coating film is often impaired due to the occurrence of defects.

Therefore, in the conventional multicolor pattern forming paint, the ratio of the organic solvent contained in the colored paint particles is increased to reduce the difference between the specific gravity of the colored paint particles and the specific gravity of the dispersion medium, and the colored paint particles are dispersed. It is designed to be stably dispersed in the medium.

However, if the ratio of the organic solvent contained in the colored paint particles is increased as described above, the ratio of the components, which are important for forming a coating film, such as the film-forming resin and the colorant, contained in the colored paint particles is increased. Since it decreases, it becomes difficult to form a multicolored coating film having a sense of volume and high texture.

An object of the present invention is to improve the dispersion stability of paint particles in a dispersion medium in a paint for forming a multicolor pattern, and at the same time, to form a multicolor pattern coating film having a high texture.

[0007]

The multicolor pattern forming coating composition according to the present invention contains an aqueous dispersion medium and particles of two or more colors of solvent coating composition dispersed in the dispersion medium. The solvent-based paint contains a film-forming resin, an organic solvent, a colorant and a balloon.

The solvent-based paint has a nonvolatile content of, for example, 50.0 to 70.0% by weight. Further, the solvent-based paint has, for example, a specific gravity larger than that of the dispersion medium and a difference in specific gravity from the dispersion medium of 0.15 or less. Further, the balloon contained in the solvent-based paint is, for example, a balloon that does not exhibit liquid impregnation property.

The method for producing a multicolor pattern forming coating composition according to the present invention comprises a step of preparing a solvent coating composition containing a film-forming resin, an organic solvent, a colorant and a balloon, and the solvent coating composition in an aqueous dispersion medium. And the step of dispersing it into

In this manufacturing method, for example, the solvent-based paint is prepared so that the specific gravity is larger than that of the dispersion medium and the difference in specific gravity from the dispersion medium is 0.15 or less.

The multicolored coating film according to the present invention contains an aqueous dispersion medium and particles of a solvent-based paint of two or more colors dispersed in the dispersion medium, and the solvent-based paint is a film-forming resin,
It is formed by using a multicolor pattern forming paint containing an organic solvent, a coloring agent and a balloon.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Multicolored Pattern Forming Paint The aqueous dispersion medium contained in the multicolored film forming paint of the present invention is water or a mixture of water and an organic solvent miscible with water. As the organic solvent miscible with water, for example,
Examples thereof include alcohols.

The paint for forming a multicolored coating film according to the present invention contains oil droplet-like particles of a solvent-based paint dispersed in the above-mentioned aqueous dispersion medium. Here, the solvent-based paint mainly contains a film-forming resin, an organic solvent, a colorant, and a balloon.

The film-forming resin contained in the solvent-based paint is a component for forming a coating film. As the film-forming resin, various resins similar to those used for general solvent-based paints can be used as long as they are incompatible with the above-mentioned aqueous dispersion medium. Specific examples of the film-forming resin that can be used include acrylic resins, vinyl acetate resins, urethane resins, epoxy resins, alkyd resins, polyester resins and polybutadiene resins. Among these, it is preferable to use an acrylic resin from the viewpoint of compatibility with an odorless or low-odor solvent described later.

The organic solvent contained in the solvent-based paint dissolves or disperses the above-mentioned film-forming resin, colorant and the like to adjust the handleability and coatability of the solvent-based paint and at the same time in the above-mentioned dispersion medium. It is a component for forming oil droplets by solvent-based paint. The organic solvent, as long as it can dissolve the film-forming resin and is not miscible with water,
Various materials conventionally used for paints can be used. Specifically, for example, aliphatic and aromatic hydrocarbons, alcohols, ketones, ethers and esters are used. When the paint for forming a multicolored coating film of the present invention is used for coating the inside of a building, it is preferable to use an odorless or low odor solvent such as a naphthene-based solvent.

The colorant contained in the solvent-based paint is a component for imparting a desired color to the solvent-based paint. As a colorant, in addition to general paint color pigments such as titanium oxide,
Dyes can also be used.

The balloon contained in the solvent-based paint is a hollow, fine-grained weight-reducing agent, so that the solvent-based paint can be uniformly and stably dispersed in the dispersion medium by adjusting the specific gravity of the solvent-based paint. It is an ingredient for

The preferred balloons used in the present invention are those which do not exhibit liquid impregnation properties. When a liquid-impregnated balloon is used, it becomes difficult to adjust the specific gravity using the balloon. Examples of the balloon that does not exhibit liquid impregnating properties include ceramic balloons, glass balloons,
Examples include perlite and resin balloons. The ceramic balloon is obtained by heating and expanding volcanic glass particles containing alumina as a main component, and usually has a spherical shape. Further, the glass balloon is a glass material that is heated and foamed, and is usually spherical. Further, perlite is pearlite crushed and fired. As the resin balloons, spherical minute hollow bodies made of various synthetic resins are preferably used, but those made of vinylidene chloride-acrylonitrile-based copolymer resin are particularly preferable.

The specific gravity (true specific gravity) of the above-mentioned balloon is 0.
It is preferably 5 or less, more preferably 0.2 or less. When the specific gravity is greater than 0.5, the specific gravity of the solvent-based paint becomes large, and it becomes difficult to uniformly and stably disperse the oil droplets of the solvent-based paint in the dispersion medium. The particle size of the balloon is 2
00 μm or less is preferable, and 60 μm or less is more preferable. If the particle size exceeds 200 μm, the appearance of the coating film and the design of the coating film may be impaired.

In addition to the above-mentioned various components, solvent-based paints include various kinds of curing agents, extender pigments, bone agents, thickeners, dispersants, defoamers, film-forming aids, antiseptic / antifungal agents, etc. Additives may be included.

In the above solvent-based paint, the weight of the non-volatile component,
That is, the total weight of the solid content of the film-forming resin, the colorant, the balloon and the other additives is 50.
It is preferably set so as to be 0 to 70.0% by weight.
When the weight of the nonvolatile content is less than 50.0% by weight, the multi-color pattern coating film obtained by the coating composition for multi-color pattern formation of the present invention may have poor volume feeling and texture, and the design property of the coating film may deteriorate. is there. On the contrary, if the weight of the non-volatile component exceeds 70.0% by weight, it becomes difficult to manufacture the paint itself,
Further, the coating workability of the coating material of the present invention may be deteriorated.

The above-mentioned non-volatile content is usually represented by% by weight of the residue remaining after heating the solvent-based paint at 105 ° C. for 3 hours.

Further, the solvent-based paint is preferably adjusted so that it has a larger specific gravity than the above-mentioned dispersion medium and a difference in specific gravity from the dispersion medium is 0.15 or less. When the specific gravity of the solvent-based paint is smaller than the specific gravity of the dispersion medium, particles of the solvent-based paint are likely to collect in the upper layer of the dispersion medium, and the dispersion stability of the solvent-based paint is reduced. As a result, the multi-color pattern forming coating composition of the present invention is likely to cause uneven discharge during spray coating, making it difficult to form a uniform multi-color pattern coating film. On the other hand, when the specific gravity difference between the solvent-based paint and the dispersion medium exceeds 0.15, the particles of the solvent-based paint tend to settle below the dispersion medium. As a result, the multicolor pattern forming coating material of the present invention is
The solvent-based paint may easily cause fusion between particles, which may reduce storage stability.

The specific gravity of the solvent-based paint can be appropriately adjusted by adjusting the amount of balloons contained therein.

The multicolor pattern forming coating material of the present invention contains particles of two or more colors of the above solvent-based coating material in the above dispersion medium. Here, the reason why the particles of the solvent-based paint of two or more colors are included is that a multicolor pattern coating film cannot be formed when only the particles of the solvent-based paint of one color are included. The particle size of the solvent-based paint is usually about 0.1.
mm-3.0 mm is preferable. If the particle size is out of this range, the desired multicolored coating film may not be obtained.

Further, in the multicolor pattern forming coating material of the present invention, the total amount of particles (B) of the dispersion medium (A) and the solvent type coating material.
It is preferable to set the weight ratio (A / B) to 30/70 to 60/40. If this weight ratio is less than 30/70, the stability of the multicolor pattern forming coating composition may decrease. On the other hand, if it exceeds 60/40, the coating efficiency on the object to be coated may decrease during coating.

The multicolor pattern forming coating composition of the present invention comprises, in addition to the above-mentioned components, a thickening agent for enhancing the dispersion stability of particles by a solvent-based coating composition, and an antiseptic agent for preventing alteration of the thickening composition. Agents or antifungal agents may be included.

Method for Producing Paint for Forming Multicolored Pattern When producing the paint for forming multicolored pattern of the present invention, first,
Prepare the solvent-based paint described above. The solvent-based paint can be prepared according to the usual method for producing a solvent-based paint,
Since it is necessary to maintain the hollow state of the balloon without breaking it, it is preferable that the balloon is added and mixed at the end.

Next, the prepared solvent-based paint is dispersed in a dispersion medium. Here, a dispersion medium is charged in a predetermined tank, and the solvent-based paint is dropped therein with stirring. At this time, the particle size of the solvent-based paint can be set to a desired particle size by appropriately adjusting the stirring speed.

The multicolor pattern-forming paint may be produced by simultaneously (or sequentially) dispersing two or more solvent-based paints in a dispersion medium, or a dispersion in which each color solvent-based paint is dispersed. It may be produced by mixing media.

Multicolored Paint Film The multicolored paint film of the present invention is formed by using the above-mentioned multicolored pattern forming coating material. Here, according to the number of colors of the solvent-based paint contained in the multi-color pattern forming coating material, various multi-color pattern coating films such as a sandstone pattern such as granite can be formed.

When a multicolor pattern coating film is formed using the multicolor pattern forming coating composition described above, various coating methods can be adopted, but in general, a spray coating method is preferably used. In a coating method other than the spray coating method, for example, a coating method using a brush or a roller, it is often difficult to uniformly apply the solvent-based paint contained in the multi-color pattern forming coating,
In addition, the particles of the solvent-based paint adhere to the coating tool in many cases, making efficient coating difficult. In addition, it is preferable that the coating for forming a multicolored pattern after coating is left as it is and naturally dried.

The multicolor pattern coating film formed in this manner is appropriately set in the range in which the non-volatile content of the solvent-based paint contained in the multicolor pattern forming paint is relatively high as described above. A good texture with a feeling can be realized. At the time of painting, in order to achieve a better texture or film thickness, the multicolor pattern forming paint may be applied multiple times. In addition, the coating amount of the multi-color pattern forming coating material required for realizing a preferable multi-color pattern coating film is usually 0.
1 to 0.5 kg / m ² .

[0034]

EXAMPLES Production Example 1 (Production of White Paint Particle Dispersion A) 23 parts by weight of powdered acrylic resin and Exol D-4 in a container.
0 (Low odor naphthenic solvent manufactured by Exxon Corporation) 40
By weight, 9.5 parts by weight of titanium oxide and 27 parts by weight of an extender pigment were added and dispersed by stirring. To this, 0.5 part by weight of a balloon (Microsphere MFL80GST, which is a hollow particle manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) was added and stirred,
A white solvent-based paint was obtained. 60 parts by weight of this solvent-based paint was added dropwise to 40 parts by weight of water containing a thickener, a preservative and a fungicide (hereinafter referred to as an aqueous dispersion medium) while stirring,
A white paint particle dispersion A was obtained. In this white paint particle dispersion liquid A, the specific gravity of the white solvent-based paint was larger than that of the aqueous dispersion medium, and the specific gravity difference was 0.07. The non-volatile content of the white solvent-based paint was 60% by weight.

Production Example 2 (Production of Blue Paint Particle Dispersion B) Except that in Production Example 1, the amount of titanium oxide was changed to 9 parts by weight and 0.5 part by weight of the blue-colored primary color paint was added. A blue solvent-based coating material was obtained in the same manner as in Production Example 1, and a blue coating particle dispersion liquid B was obtained from this blue solvent-based coating material in the same manner as in Production Example 1. In this blue paint particle dispersion liquid B, the specific gravity of the blue solvent-based paint was larger than that of the aqueous dispersion medium, and the difference in specific gravity was 0.08. The non-volatile content of the blue solvent-based paint was 61% by weight.

Production Example 3 (Production of White Paint Particle Dispersion C) 22 parts by weight of powdered acrylic resin and Exol D-4 in a container.
0 (Low odor naphthenic solvent manufactured by Exxon Co., Ltd.) 57
Parts by weight, titanium oxide 10 parts by weight and extender pigment 11 parts by weight were added and stirred and dispersed. 60 parts by weight of the white solvent-based paint thus obtained was dropped into 40 parts by weight of the same aqueous dispersion medium as used in Production Example 1 with stirring to obtain a white paint particle dispersion C. This white paint particle dispersion C is
The specific gravity of the white solvent-based paint was larger than that of the aqueous dispersion medium, and the specific gravity difference was 0.06. The non-volatile content of the white solvent-based paint was 43% by weight.

Production Example 4 (Production of Blue Paint Particle Dispersion D) In Production Example 3, the amount of titanium oxide was changed to 9.5 parts by weight, and 0.5 part by weight of a blue colored primary color paint was added. Except for this, the same procedure as in Production Example 3 was carried out to obtain a blue solvent-based coating material, and from this blue solvent-based coating material, a blue coating particle dispersion D was obtained in the same manner as in Production Example 3. In this blue paint particle dispersion liquid D, the specific gravity of the blue solvent-based paint was larger than that of the aqueous dispersion medium, and the specific gravity difference was 0.07. The non-volatile content of the blue solvent-based paint was 44% by weight.

Production Example 5 (Production of White Paint Particle Dispersion E) 22 parts by weight of powdered acrylic resin and Exol D-4 in a container.
0 (Low odor naphthenic solvent manufactured by Exxon Corporation) 40
Parts by weight, titanium oxide 9.5 parts by weight and extender pigment 27.
5 parts by weight was added and dispersed by stirring. 60 parts by weight of the white solvent-based paint thus obtained was dropped into 40 parts by weight of the same aqueous dispersion medium as used in Production Example 1 while stirring,
White paint particle dispersion E was obtained. In this white paint particle dispersion E, the specific gravity of the white solvent-based paint was larger than that of the aqueous dispersion medium, and the difference in specific gravity was 0.17. The non-volatile content of the white solvent-based paint was 60% by weight.

Production Example 6 (Production of Blue Paint Particle Dispersion Liquid F) In Production Example 5, except that the amount of titanium oxide was changed to 9 parts by weight and 0.5 part by weight of the blue-colored primary color paint was added. A blue solvent-based coating material was obtained in the same manner as in Production Example 5, and a blue coating particle dispersion F was obtained from this blue solvent-based coating material in the same manner as in Production Example 5. In this blue paint particle dispersion F, the specific gravity of the blue solvent-based paint was larger than that of the aqueous dispersion medium, and the specific gravity difference was 0.18. The non-volatile content of the blue solvent-based paint was 61% by weight.

Example 1 50 parts by weight of the white paint particle dispersion A and 50 parts by weight of the blue paint particle dispersion B were mixed and stirred to prepare a multicolor pattern forming paint. This multi-color pattern forming paint was spray-painted on art paper using a spray, and naturally dried to obtain a multi-color pattern coating film. The resulting coating film was visually evaluated for its pattern state and volume feeling. Further, the state of the obtained multicolor pattern forming coating material after being stored at 40 ° C. for 1 week was visually evaluated to examine the stability of the coating material. The results are shown in Table 1.

[0041]Comparative Example 1  White paint particle dispersion C 50 parts by weight and blue paint particle dispersion
D50 parts by weight mixed and stirred to form multicolored pattern paint
Was adjusted. Examples of this multicolored pattern forming paint
The coating film and stability were evaluated in the same manner as in 1. Table of results
Shown in 1.

Comparative Example 2 50 parts by weight of the white paint particle dispersion E and 50 parts by weight of the blue paint particle dispersion F were mixed and stirred to prepare a multicolor pattern forming paint. With respect to the multicolor pattern forming coating material, a coating film and stability were evaluated in the same manner as in Example 1. The results are shown in Table 1.

[0043]

[Table 1]

[0044]

The multicolor pattern-forming coating material according to the present invention has a good dispersion stability of particles due to the solvent-based coating material, since the solvent-based coating material dispersed in an aqueous dispersion medium contains balloons. Moreover, it is possible to form a multicolored coating film having a high texture.

In the method for producing a multicolor pattern-forming coating material according to the present invention, a solvent-based coating material containing balloons is prepared and dispersed in an aqueous dispersion medium, so that the dispersion stability of particles by the solvent-based coating material is improved. It is possible to produce a multi-color pattern forming coating material which has a good quality and is capable of forming a multi-color pattern coating film having a high texture.

Since the multicolor pattern coating film according to the present invention is formed by using the above-mentioned multicolor pattern forming coating material, it has a good texture.

Claims (7)

[Claims] 1. A water-based dispersion medium, and particles of a solvent-based paint of two or more colors dispersed in the dispersion medium, wherein the solvent-based paint is a film-forming resin, an organic solvent, a colorant, and a balloon. A paint for forming multicolored patterns, which contains. 2. The solvent-based paint has a nonvolatile content of 50.0 to
The multicolor pattern-forming coating material according to claim 1, which is 70.0% by weight. 3. The multicolor pattern forming paint according to claim 1, wherein the solvent-based paint has a specific gravity larger than that of the dispersion medium and a difference in specific gravity from the dispersion medium of 0.15 or less. 4. The multicolor pattern forming coating composition according to claim 1, wherein the balloon is a balloon that does not exhibit liquid impregnation properties. 5. A step of preparing a solvent-based coating material containing a film-forming resin, an organic solvent, a colorant and a balloon, and a step of dispersing the solvent-based coating material in an aqueous dispersion medium,
A method for producing a paint for forming a multicolored pattern, including: 6. The production of a multicolor pattern-forming coating material according to claim 5, wherein the solvent-based coating material is prepared so that the specific gravity is larger than that of the dispersion medium and the specific gravity difference with the dispersion medium is 0.15 or less. Method. 7. A water-based dispersion medium and particles of a solvent-based paint of two or more colors dispersed in the dispersion medium, wherein the solvent-based paint comprises a film-forming resin, an organic solvent, a colorant and a balloon. A multicolor pattern coating film formed using a multicolor pattern forming coating material including