JP2000309729A - Coating for forming multicolor pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating for forming a multicolor pattern which can form a coated film having a uniform multicolor pattern exhibiting soft feeling and heat insulating properties even by means of roller coating or brush application. SOLUTION: The title coating comprises a binder resin having incorporated therein, as its ingredients, (A) 30-200 pts. by wt. of granular colored aggregate having an average particle size of 10-500 nm, (B) 2-100 pts. by wt. of scaly colored aggregate having an average major axis of 0.1-5.0 mm and an average thickness of 10-500 μm and (C) 2-100 pts. by wt. of hollow particles having an average particle size of 10-500 μm, each based on 100 pts. by wt. of the binder resin. The total amount of (A), (B) and (C) is 45-350 pts. by wt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint for forming a colorful pattern, which has a soft feeling and a heat insulating property, and can form a uniform colorful pattern film by means such as roller coating or brush coating.

[0002]

2. Description of the Related Art As a conventional method of forming a multicolored paint film, a method of forming a multicolored paint film by applying a paint containing a granular colored aggregate is known as a typical one (for example, a method of forming a multicolored paint film). Japanese Patent Publication No. 7-88488,
Nos. 9-172557 and JP-A-8-60043).

[0003]

However, the multi-colored coating film formed by these methods does not have a soft touch feeling when touched by hand due to the unevenness of the granular colored aggregates appearing on the coating film surface. In addition, since the contour of the pattern made of the granular colored aggregate was clear, it was visually inferior to a warm soft feeling. Furthermore, there is a problem that it is difficult to form a uniform multi-colored pattern coating film due to the movement of the granular colored aggregate because the shearing force is applied when coating with a coating means that applies a shearing force such as roller coating or brush coating. Was. Further, a method of forming a large-sized multi-colored coating film by applying a paint containing a scaly colored aggregate instead of or in combination with the granular colored aggregate is also known (for example, Japanese Patent Application Laid-Open No. -319
No. 3, JP-A-7-247450).

[0004] However, when the multi-colored coating film formed by these methods is applied by a coating means that applies a shearing force such as roller coating or brush coating, the scale-like colored aggregate becomes
Difficult to distribute in the horizontal direction in the coating film, distributed in the random direction in the coating film, so that the scaly colored aggregates cue the surface of the coating film, it is difficult to form a natural and soft coating film There were some problems.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, as a filler, a granular colored aggregate having a specific particle size, a flaky colored aggregate, By using hollow particles having a smaller specific gravity together with the mixed colored aggregate consisting of, there is a natural and soft feeling even in the coating means such as roller coating or brush coating, and the granular colored aggregate and flaky colored aggregate are The inventors have obtained the knowledge that mixed multi-colored coating films can be formed, and completed the present invention. That is, in the present invention, (A) 30 to 200 parts by weight of a granular colored aggregate having an average particle diameter of 10 to 500 μm, and (B) an average major axis of 0.1 to 5.0 mm, based on 100 parts by weight of the binder resin. 2 to 100 parts by weight of a flaky colored aggregate having an average thickness of 10 to 500 μm, and (C) 2 to 100 parts by weight of hollow particles having an average particle size of 10 to 500 μm, and (A) The total amount of (B) and (C) is 45 to 350 parts by weight,
Provide a paint for forming a colorful pattern.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
Examples of the paint used in the present invention include conventionally known water-soluble paints, aqueous emulsion paints, and organic solvent-type paints in which components such as a binder resin are dispersed or dissolved in a solvent. That is, a binder resin such as an acrylic resin type, a vinyl acetate resin type, a polyurethane resin type, an acrylic silicone resin type, a fluororesin type, an alkyd resin type, an epoxy resin type, water for stably dispersing or dissolving the resin, It is composed of a solvent comprising an organic solvent or a mixture of these, and, if necessary, a curing agent, a thickener, a dispersant, an antifoaming agent, a film forming aid, various additives such as a fungicide, and the like. You.

In the paint for forming a colorful pattern of the present invention, a filler composed of (A) a granular colored aggregate, (B) flaky colored aggregate, and (C) hollow particles is dispersed in such a paint. It is a paint that has been included. The granular colored aggregate of (A) has an average particle diameter of 10 to 500 μm, preferably 20 to 200 μm from the viewpoint of stability in paint, easy recognition of a dot pattern, and the like.
Use those. As such granular colored aggregate,
As long as it does not dissolve in the solvent used in the paint, various inorganic or organic granular colored aggregates conventionally used in paints for forming colorful patterns can be used without any particular limitation. Specific examples include colored silica sand, marble powder, granite powder, fluorite particles, crushed ceramic particles, and plastic particles. As the scaly colored aggregate (B), those having an average major axis of 0.1 to 5.0 mm, preferably 0.3 to 3.0 mm, and a thickness of 10 to 500 μm, preferably 15 to 100 μm are used. With the size in this range, the distribution of the scaly colored aggregate of (B) can be recognized in the dot pattern of the granular colored aggregate of (A), thereby forming a large-sized colorful pattern such as stone-like tone, In addition, stability in paint and prevention of cracking during painting can be achieved.

Further, in order to obtain a nearly natural multi-colored coating film in which granular colored aggregates and flaky colored aggregates are mixed, the average particle diameter of the latter is more than twice the average particle diameter of the former, preferably, Three times or more is preferable. As such scaly colored aggregates, as with the granular colored aggregates, various inorganic and organic materials and metal scaly colored bones conventionally used in paints for forming a colorful pattern, as long as they do not dissolve in a solvent. The material can be used without any particular restrictions. Specific examples include colored mica, glass flakes, ceramic pieces, plastic film pieces, and aluminum flakes. The hollow particles (C) have a function as a cushioning material. Therefore, even when the particles are coated by a coating method such as roller coating or brush coating, uneven movement of the granular colored aggregates and flaky colored aggregates is prevented. It is possible to suppress cueing of the scaly colored aggregate from the surface of the coating film and to form a uniform, soft, multi-colored coating film. Furthermore, since the hollow particles provide heat insulation, it is possible to form a coating film in which dew condensation or the like is unlikely to occur.

The particle size of the hollow particles is preferably from 10 to 50 in order to exhibit the above-mentioned effects and further from the viewpoint of coating workability.
0 μm, preferably 30 to 200 μm, is suitable. Further, the hollow particles have no solvent impregnating property so as to be mainly distributed on the surface of the coating film, and have a true specific gravity of 0.1 to 0.8, preferably 0.2 to 0.5. Is suitable from the viewpoint of soft touch feeling. The hollow particles are suitably transparent or translucent in order to make the formed coating film have a deep and soft color tone. Representative examples of such hollow particles include hollow glass beads and plastic hollow particles such as an acrylate-styrene copolymer and a vinylidene chloride-acrylonitrile copolymer.

[0010] The paint for forming a colorful pattern of the present invention contains the above-mentioned three types of fillers, and the mixing ratio thereof is such that 30 parts of the particulate colored aggregate (A) is added to 100 parts by weight of the binder resin. -200 parts by weight, preferably 35-150 parts by weight;
2 to 100 parts by weight, preferably 20 to 70 parts by weight of the scaly colored aggregate of (B); 2 to 100 parts by weight of the hollow particles of (C)
Suitably, parts by weight, preferably 20 to 60 parts by weight, are suitable. In addition, when the granular colored aggregate of (A) is less than 30 parts by weight,
If the fine dot pattern is inconspicuous and exceeds 200 parts by weight, it is necessary to reduce the scale-like colored aggregate (B) relatively from the viewpoint of the coating film strength, and it becomes difficult to obtain a beautiful colorful pattern.

If the scale-like colored aggregate (B) is less than 2 parts by weight, the large-sized colorful pattern is not conspicuous, and if it exceeds 100 parts by weight, the large-sized pattern is conspicuous and the balance of the pattern is poor. The coating strength also decreases. If the amount of the hollow particles (C) is less than 2 parts by weight, the uniformity of the multicolored pattern is deteriorated, and the softness of the coating film is lost from the viewpoint of touch and sight. If it exceeds, not only the improvement of the compounding effect is not recognized, but also the granular colored aggregate of (A) and the flaky colored aggregate of (B) need to be relatively reduced from the viewpoint of the coating film strength. Appearance becomes worse.

The total amount of these three types of fillers is
45 to 350 parts by weight, based on 100 parts by weight of the binder resin,
Preferably, the amount is 60 to 250 parts by weight. If the total amount of the filler is less than 45 parts by weight, the colorful pattern becomes non-uniform, and if it exceeds 350 parts by weight, the strength of the coating film deteriorates, which is not preferable. The weight ratio of the scaly colored aggregate of (B) and the hollow particles of (C) is preferably (100: 20 to 300) from the viewpoint of softness and uniformity of the colorful pattern, and more preferably (100: 50). To 200) are suitable.

As a method of applying the paint for forming a colorful pattern of the present invention, conventional spray coating and the like are naturally possible, but roller coating, which has conventionally been considered difficult to form a uniform colorful pattern, can be used.
Even with a coating method in which a shearing force such as brush coating is applied, a uniform and colorful pattern having a fine uneven surface can be formed by a single application. In addition, it is desirable that the viscosity of the paint is adjusted to 30 to 200 poise (25 ° C.), preferably 40 to 80 poise with a solvent or an additive from the viewpoint of coating workability.
The film thickness is not particularly limited, but is desirably 50 to 1000.
It is appropriate to apply the coating to a thickness of μm (dry film thickness). The coating is naturally dried or forcibly dried at a temperature at which the above-mentioned plastic filler is not melted to form a multi-colored coating film.

[0014]

The present invention will be described below in more detail with reference to examples and comparative examples. In the examples and comparative examples, “parts” and “%” are shown on a weight basis. <Examples 1 and 2 and Comparative Examples 1 to 3> The components shown in Table 1 were mixed and dispersed to prepare a paint for forming a colorful pattern. The paint obtained in each of the examples and comparative examples was applied to a ground-treated slate plate with a medium hair roller so as to have a dry film thickness of about 500 μm, and was naturally dried. The obtained pattern appearance, soft feeling and heat insulating property were examined, and the results are shown in Table 2. In addition, the test method was performed as follows.

<Pattern Appearance> The appearance of the coating film was visually judged. <Soft feeling> Judgment of soft feeling touched by hand and soft feeling of visual observation. ：: Soft feeling for both touch and visual feeling ×: Soft feeling for at least one of touch feeling and visual feeling

<Heat insulation property> Each paint was applied on the outer surface of a 4-liter round can to a dry film thickness of 500 µm and dried.
Two liters of 5 ° C. water was put into the round can, and the presence or absence of dew condensation on the coating film surface after 10 minutes was examined under an environment of a temperature of 20 ° C. and a humidity of 50%. : No condensation ×: Condensation

[0017]

[Table 1] Table 1 (Unit: parts)

Note 1) "Polytron E316" (trade name, manufactured by Asahi Kasei Corporation), solid content 45% Note 2) Average particle size 150 μm Note 3) Average particle size 150 μm Note 4) Average major axis 400 μm, average thickness 20 μm Note 5) Average long diameter 420 μm, average thickness 18 μm Note 6) Average particle diameter 60 μm, true specific gravity 0.2 Note 7) Average particle diameter 0.3 μm Note 8) (1: 3: 2) of thickener, dispersant and defoamer ) Additive

[0019]

[Table 2] Table 2

As is clear from Table 2, in Examples 1 and 2 using the paint for forming a colorful pattern of the present invention, a uniform colorful pattern was formed, and the soft feeling and the heat insulating property were good. . On the other hand, Comparative Examples 1 and 2 containing no hollow particles
All had uneven and colorful patterns, and both the soft feeling and the heat insulation were poor. Comparative Example 3, in which a normal pigment having a small particle size was blended, had a pattern without natural feeling.

The paint for forming a colorful pattern of the present invention has a soft feeling and heat insulating property, and can form a uniform paint film of a colorful pattern even by means such as roller coating or brush coating.

Continued on the front page F term (reference) 4J038 CC062 CD042 CD091 CF021 CG001 CG141 CG142 CG162 CJ022 CL001 DB001 DD001 EA012 HA066 HA436 HA486 HA546 HA556 KA20 KA21 MA02 MA04 MA06 MA08 MA09 MA10 NA01

Claims (2)

[Claims] 1. A method according to claim 1, wherein (A)
A granular colored aggregate having an average particle size of 10 to 500 μm
00 parts by weight, (B) 2 to 10 scaly colored aggregates having an average major axis of 0.1 to 5.0 mm and an average thickness of 10 to 500 μm.
0 parts by weight, and (C) 2 to 100 parts by weight of hollow particles having an average particle size of 10 to 500 μm, and (A)
A multicolor pattern forming paint, wherein the total amount of (B) and (C) is 45 to 350 parts by weight. 2. The weight ratio of the scaly colored aggregate of (B) and the hollow particles of (C) is (100: 20).
300), and the average major axis of the scaly aggregate of (B) is at least twice the average particle diameter of the granular colored aggregate of (A). paint.