JP2023065827A - Multicolor pattern-formable coating, method for depositing multicolor pattern-formable coating, coated article, and method for producing multicolor pattern-formable coating - Google Patents

Abstract

To achieve a multicolor pattern-formable coating or the like which easily achieves a coating layer excelling in a glaring, powerful brightness or the like.SOLUTION: A multicolor pattern-formable coating comprises a binder resin, first colored flakes, second colored flakes that are different in color tone from the first colored flakes, and a glitter comprising glass flakes as a substrate, wherein, the first and second colored flakes are 150 μm or less in thickness.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a paint for forming a multicolored pattern, a method for forming a film of the paint for forming a multicolored pattern, a coated article, and a method for producing a paint for forming a multicolored pattern.

Conventionally, multicolored pattern paints have been used for exterior wall painting. Multicolor paint is a paint that is often used on the outer walls of houses, etc. JIS K-5667 states, "Multicolor paint is a suspension of two or more color droplets in liquid or gel form. JIS K 5567-2003 1. Scope of application, remarks).

Further, in recent years, various paints containing glittering materials have been proposed for the purpose of realizing more vivid designs.

For example, Patent Literature 1 describes "a multicolored pattern paint comprising a dispersion medium and colored dispersed particles dispersed in the dispersion medium in an undissolved state, and in addition to the colored dispersed particles, a composition that does not impair transparency It is disclosed as a granite-like pattern-forming paint characterized by containing scale-like pigments having an average diameter of 1 to 10 mm in the upward direction of the plate coated on the surface with a resin film. It is possible to form a cracked textured pattern coating film with a partially glittering feeling similar to that of granite." Examples of scale-like pigments include mica flakes, plastic film flakes, and glass flakes.

Japanese Patent Application Laid-Open No. 08-151541 (claim 1, claim 2, paragraph 0013)

Among glittering materials, those based on glass flakes have a feature of high surface smoothness, so that they have a glaring and powerful glittering feeling, and can make the design of the coating film more vivid. There has been a demand for a multicolored pattern paint that utilizes the characteristics of such glass flakes.

However, in the multicolor pattern paint described in Patent Document 1, when glass flakes are used as the scale-like pigment, in the state of being a coating film, the glaring and powerful feeling of brilliance peculiar to glass flakes and the three-dimensional effect of the surface to be coated. was not fully utilized.

The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a coating material for forming a multicolored pattern that easily realizes a coating film excellent in glaring and strong luster.

In order to solve the above problems, a binder resin, a first colored flake, a second colored flake having a color tone different from that of the first colored flake, and a glittering material based on glass flakes (glittering pigment ) and a paint for forming a multicolored pattern containing.
Here, the paint of the present invention is defined as "a paint for forming a multicolored pattern" because the paint of the present invention does not correspond to "a liquid or gel with particles of two or more colors suspended". , Strictly speaking, it is considered that it does not belong to the category of "colorful paint" defined in JIS K-5667.

This paint for forming a multicolored pattern makes it easy to realize a multicolored pattern coating film excellent in glaring and strong luster.
The inventors of the present application have devoted themselves to research and development in order to solve the above problems. Surprisingly, the inventors have found that the above problems can be solved by replacing the colored gel particles used in the multicolor paint with colored flakes. The possible mechanisms for this are explained below.

As described above, the multicolored pattern paint is formed by suspending liquid or gel particles of two or more colors (hereinafter referred to as colored gel particles, etc.), so that a scattered pattern can be formed in one application. It is a feature. At this time, in order to express the "scattered pattern" as a design, it was necessary to include large colored gel particles or the like. In recent years, in particular, there has been a growing interest in the design of natural stones, in which each colored portion is large and the multicolored pattern can be clearly recognized even from a short distance. Therefore, in order to form such a large pattern, it was necessary to use a multicolored pattern paint containing large colored gel particles having a size of several millimeters.

However, when glass flakes are blended into such a multicolored pattern paint, there are cases in which the peculiar glare and strong luster of glass flakes cannot be fully utilized.
Such a phenomenon is caused by the fact that the direction of the glass flakes becomes difficult to align when the film is formed, and the reflected light is scattered. It was caused by clouding.

In other words, the whole or the end of the glass flake may run on a large colored gel particle or the like and become slanted, and this slanting may remain even after the coating film dries.
Some of the colored gel particles had a substantially spherical shape, and when these particles dried, they tended to have a shape in which the central part was raised. As a result, the glass flakes that are entirely on the colored gel particles tend to tilt as well.
In the past, due to such a phenomenon, the direction of the glass flakes was not aligned and the reflected light was scattered, and there were cases where the peculiar glaring and powerful luster of the glass flakes could not be fully utilized.

In addition, the colored gel particles have the property of easily settling during storage. Such sedimented multicolor paint must be thoroughly stirred before application to uniformly disperse the colored particles. However, during stirring, the glass flakes pierce the colored gel particles and the colored gel particles are destroyed, and the pigments in the colored gel particles diffuse into the dispersion medium, causing the color to blur and become cloudy, resulting in the glare peculiar to glass flakes. In some cases, the powerful feeling of glitter cannot be fully utilized (obstructed).

The paint for forming a colorful pattern of the present invention uses colored flakes instead of colored gel particles, etc., and incorporates a glittering material based on glass flakes into the paint, thereby solving such problems.
That is, in the paint for forming a multicolored pattern of the present invention, the direction of the glass flakes is easily aligned, so even with a relatively small amount, it is easy to realize a multicolored pattern coating film excellent in glaring and strong brightness. Become.
In addition, when stirring before painting, the pigment of the colored flakes does not diffuse into the dispersion medium, causing the color to blur and become cloudy.
Furthermore, when a film is formed on an engraved panel, it becomes easier to realize a multi-patterned coating film that takes advantage of the three-dimensional appearance of the engraved panel.
In addition, even if the glass flakes stick into the colored flakes during stirring, it is difficult for the pigments and the like to bleed out from inside, making the pattern unclear or reducing the size of the colored flakes.

It is also preferable that the first colored flakes and the second colored flakes have a thickness of 150 μm or less and are a paint for forming a multicolored pattern.

With this paint for forming a colorful pattern, even if the edge of the glass flakes runs over the first colored flakes or the second colored flakes, the glass flakes are less inclined with respect to the panel. As a result, the specularly reflected light to the panel is efficiently reflected by the glass flakes, so that the glitter can be felt strongly.
The thickness of the first colored flakes and the second colored flakes is more preferably 20-120 μm, still more preferably 40-100 μm, and most preferably 60-90 μm.

It is also preferable that the first colored flakes and the second colored flakes are paints for forming a multicolored pattern, including those that do not pass through a sieve with an opening size of 1.3 mm.

This multi-colored pattern-forming paint contains large colored flakes, so that it is easy to express a so-called "scattered pattern" as a design.

It is preferable that the luster material is a paint for forming a multicolored pattern having an average particle size of 15 to 800 μm.

Glittering materials using glass flakes as a base material have improved glittering feeling as the average particle diameter increases. However, if the average particle size of the glitter material exceeds 800 μm, the glitter may be impaired. The average particle size of the glittering material is more preferably 80-800 μm, still more preferably 230-800 μm, and most preferably 480-600 μm.
Here, the average particle size is determined as the median diameter (d50, volume basis) based on the cumulative distribution from the particle size distribution measured by the laser diffraction/scattering method using a commercially available laser diffraction/scattering particle size distribution analyzer. be able to.

It is also preferable that the luster material is a paint for forming a colorful pattern, in which the thickness of the base material, glass flakes, is 0.1 to 10 μm.

A luster material using glass flakes having such a thickness as a base material has improved luster and can be suitably used as a paint for forming a multicolored pattern. The thickness of the glass flakes is more preferably 0.2-10 μm, still more preferably 0.5-6 μm, and most preferably 1-5 μm.

It is also preferable to use a paint for forming a multicolored pattern in which the luster material is contained in the solid content of the paint for forming a multicolored pattern in an amount of 0.5 to 5.0% by weight. This paint for forming a multicolored pattern makes it easier to realize a multicolored pattern coating film excellent in glaring and strong luster.

The ratio of the glittering material contained in the solid content of the paint for forming a multicolored pattern is more preferably 0.7 to 4.0% by weight, more preferably 1.0 to 3.5% by weight, and most preferably 1.2 to 2.0% by weight.

It is also preferable that the first colored flakes and the second colored flakes contain an acrylic silicone resin and a pigment in a paint for forming a multicolored pattern.

Acrylic silicone resins are particularly excellent in weather resistance. Therefore, by using the colored flakes containing the acrylic silicone resin and the pigment, the color tone of the colored flakes changes little over time, and a coating film having excellent durability can be formed.

The subject includes a binder resin, first colored flakes, second colored flakes having a color tone different from that of the first colored flakes, and a glitter material having glass flakes as a base material, and the first The colored flakes and the second colored flakes include those that have a thickness of 150 μm or less and do not pass through a sieve with an opening size of 1.3 mm, and the glitter material has an average particle size of 15 to 800 μm and a thickness is 0.1 to 10 μm, and the glitter material is contained in the solid content of the paint for forming a multicolored pattern in an amount of 0.5 to 5.0% by weight. be.

In addition, the above-mentioned problems include an enamel coating film forming process in which an enamel paint is applied to the surface of a surface to be coated such as an outer wall to form a film, and the surface of the enamel coating film formed in this enamel coating film forming process. and a step of forming a multi-colored pattern coating film by applying the multi-colored pattern forming coating composition according to any one of the above. .
The enamel coating described here is a coating in which a coloring pigment is dispersed in a clear coating composed of a resin solution to ensure hiding power. Unless otherwise specified, the same applies hereafter.

Furthermore, the above-mentioned problems are also solved by a coated article in which a multi-color pattern coating film is formed from any one of the multi-color pattern forming paints described above. The above object is also solved by a coated article in which a multi-color pattern coating film is formed on the surface side of a panel using any one of the multi-color pattern forming paints described above.

In addition, the above-mentioned problem is achieved by mixing a binder resin, first colored flakes, second colored flakes having a color tone different from that of the first colored flakes, and a luster material based on glass flakes. The problem is also solved by a method of manufacturing a paint for forming a multicolored pattern, which includes a paint-forming step of forming a paint by using a method.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to realize a coating material for forming a multicolored pattern, which can easily form a coating film excellent in brilliance and strong brightness.

Embodiments of the present invention are described below by way of illustration. A paint for forming a multicolored pattern includes a binder resin, first colored flakes, second colored flakes, and a luster material.
Although the present invention will be exemplified below with reference to specific embodiments and examples, the present invention is not limited to the following embodiments.

1. Binder Resin The binder resin is a resin that disperses the first colored flakes, the second colored flakes and the luster material.

The binder resin is not particularly limited. For example, binder resins include known synthetic resins such as acrylic resins, ethylene-acrylic resins, vinyl acetate-acrylic resins, styrene-acrylic resins, urethane resins, silicone resins, urethane-acrylic resins, acrylic-silicone resins, and chloroprene latex. , acrylic butadiene latex, and the like can be used. Among them, acrylic silicone resins are preferably used from the viewpoint of weather resistance. For example, acrylic silicone resins and ceramic-modified acrylic silicone resins are suitable. Examples of acrylic silicone resins include "Polydurex G-625" manufactured by Asahi Kasei Corporation.

The binder resin is usually used as a binder resin solution. For example, it can be dissolved in a solvent or used in the form of a resin emulsion dispersed in a solvent (especially a water solvent).

2. First Colored Flakes The first colored flakes are colored flake-like powder. The flake shape includes plate shapes such as plate shapes and scale shapes. The colored flakes preferably contain a resin and a pigment.

Such colored flakes are obtained, for example, by thinly applying a liquid raw material containing a resin and a pigment to a releasable substrate or the like, drying it, peeling it from the substrate or the like and pulverizing it.
A method for producing the first colored flakes is illustrated below.

First, a liquid raw material is prepared as a source of colored flakes. A liquid raw material that contains a synthetic resin, a solvent, a coloring pigment as a coloring component, and the like can be used. In addition, it may contain extender pigments, aggregates, thickeners, leveling agents, and the like.

Various synthetic resins and rubber latex can be used for the synthetic resin. Among them, acrylic silicone resins are preferably used from the viewpoint of weather resistance. For example, acrylic silicone resins and ceramic-modified acrylic silicone resins are suitable. Examples of acrylic silicone resins include "Polydurex H-7650" manufactured by Asahi Kasei Corporation.

The synthetic resin can be dissolved in a solvent or used in the form of a resin emulsion dispersed in a solvent (especially a water solvent).

Examples of color pigments that can be used include titanium oxide, yellow iron oxide, red iron oxide (ferric oxide: red iron oxide), phthalocyanine blue, ocher, ultramarine blue, carbon black, and black iron oxide. Examples of extender pigments that can be used include calcium carbonate, clay, talc, kaolin, bentonite, silica powder, diatomaceous earth, and white carbon.

As the aggregate, in addition to fine grains such as silica sand at the time of production, for example, fine grains obtained by pulverizing natural stones such as Kansui stone, granite, and marble, glass beads, plastic beads, Kansui sand, or silica sand can be used. A core coated with paint or coated with glaze can be used.

As a method for producing colored flakes, for example, a liquid raw material is coated on a flat, peelable base material by a coating means (for example, a film applicator: JIS-K5101) that can ensure a constant film thickness, and dried. can be considered. At this time, it is preferable to apply the coating so that the dry thickness is 150 μm or less. Most preferably, it is applied in a thickness such that the dry thickness is 75 μm±15 μm.
Thereafter, the coating film is peeled off from the substrate and pulverized by a pulverizing means to obtain colored flakes.

The colored flakes thus obtained can be passed through a sieve having a predetermined mesh size, and the flakes that have passed through the sieve can be used as the first colored flakes. For example, the flakes passed through a sieve with an opening size of 2.38 mm can be used as the first colored flakes.

In addition, as will be described later, the obtained colored flakes are sieved to be classified into large-diameter colored flakes, medium-diameter colored flakes, small-diameter colored flakes, and the like, and these are mixed in an arbitrary ratio to obtain the first colored flakes. It can also be used as

The first colored flakes can consist of colored flakes of a single color. For example, white colored flakes alone, gray colored flakes alone, and black colored flakes alone.

3. second colored flake
The second colored flakes are also colored flake-like powder, like the first colored flakes. However, the second colored flakes should be a different shade than the first colored flakes. A different color tone means that any of hue, saturation, and lightness is different to such an extent that it can be discerned at a glance. For example, the color difference ΔE between both colored flakes can be greater than 10. The color difference ΔE between two colors can be expressed as (ΔL ² +Δa ² +Δb ² ) ^−1/2 using their lightness (L value), redness (a value) and yellowness (b value). ΔL is the difference between the L values of the two colors, Δa is the difference between the a values of the two colors, and Δb is the difference between the b values of the two colors.

Since the method for producing the second colored flakes is the same as the method for producing the first colored flakes, the description is omitted, but as described above, since the color tone is different from that of the first colored flakes, the type of coloring pigment and the blending ratio thereof must be different from that of the first colored flakes.

4. Brilliant material The luminous material is based on glass flakes. Glittering materials containing glass flakes as a base material are superior in surface smoothness to lustering materials containing aluminum flakes or mica as a base material, and therefore have a glaring and powerful luster.

Various coatings are preferably applied to the surfaces of the glass flakes. For example, a metal coating such as gold or silver or a metal oxide coating can be used.
The metal oxide used for coating is not particularly limited as long as it can exhibit glitter. Examples of metal oxides include titanium oxide, iron oxide, zinc oxide, tin oxide, aluminum oxide, silicon oxide, copper oxide, nickel oxide, and cobalt oxide. These metal oxides can be used singly or in combination of two or more.

Among them, it is preferable that the metal oxide used for the coating is composed of at least one of titanium oxide and iron oxide. In this case, the production cost of the luster material is low, and good luster can be exhibited at low cost.

The average particle size of the luster material is preferably 15 to 800 μm. Within this average particle size range, particularly excellent luster is exhibited. In addition, it is preferable that, among the glittering materials, those having a size that does not pass through a sieve with an opening size of 300 μm are contained in an amount of 20% by weight or more of the entire glittering material.

Further, the thickness of the glass flakes as the substrate is preferably 0.1 to 10 μm. Within this average particle size range, particularly excellent luster is exhibited.

3. Method for Producing Paint for Forming Multicolored Pattern Using the binder resin, the first colored flakes, the second colored flakes and the luster material, a paint for forming a multicolored pattern is produced. Specifically, in the coating process, a binder resin solution such as an emulsion resin solution, the first colored flakes, the second colored flakes and the luster material are mixed and dispersed in a predetermined ratio to form a coating.

As the first colored flakes and the second colored flakes, as described above, the flakes passed through a sieve with an opening size of 2.38 mm can be used.
Also, the first colored flakes and the second colored flakes can be classified into large-diameter colored flakes, medium-diameter colored flakes and small-diameter colored flakes, and these can be blended in an arbitrary ratio. For example, a paint for forming a multicolored pattern by blending 1.5 to 2.5 medium-diameter colored flakes and 2.5 to 3.5 small-diameter colored flakes with respect to 1 large-diameter colored flake, in terms of weight ratio. can be blended into At this time, a mixture of large-diameter colored flakes, medium-diameter colored flakes and small-diameter colored flakes in a predetermined ratio may be prepared in advance.

The mixing ratio of the first colored flakes and the second colored flakes is not particularly limited, and can be appropriately adjusted depending on the design of the multicolored pattern coating film to be obtained. Also, the combined amount of the first colored flakes and the second colored flakes (the total amount of the colored flakes) is not particularly limited. For example, it can be 20 to 60% by weight of the paint solids. The total amount of colored flakes is preferably 30-55% by weight of the solids of the paint, more preferably 35-50% by weight of the solids of the paint.

The blending ratio of the luster material is also not particularly limited, but it is preferable to blend it so that it is contained in the solid content of the paint for forming a multicolored pattern in an amount of 0.5 to 5.0% by weight. The paint for forming a multicolored pattern of the present invention can form a multicolored pattern coating film excellent in glaring and strong luster even when the amount of the luster material is relatively small.

Various fillers such as colored beads and mica may be added to the paint for forming a colorful pattern as long as the weather resistance and workability are not significantly impaired. Moreover, matting agents such as silica and acrylic beads, and various additives such as leveling agents and dispersing agents may be added.

4. Method for Forming Paint for Forming Multicolored Patterns As a method for forming a film for the paint for forming multicolored patterns thus obtained, it is possible to apply the coating directly to the surface to be coated such as an outer wall, but it is possible to apply a base coat. It is preferably applied to the surface of the undercoating film formed by application.
Exemplary exterior walls include panels made of concrete, lightweight cellular concrete (ALC), extruded cement slabs, gypsum boards, ceramic sandings, metal sidings, and resin sidings. The surface of these panels may be smooth or machined. By forming a colorful pattern coating film on the surface side of these panels, a feeling of glaring and powerful brightness can be obtained. In particular, when a film is formed on a panel that has been carved, it is easy to realize a multi-patterned coating film that takes advantage of the three-dimensional effect of the carved process.

As a method of forming a coating for forming a multicolored pattern, for example, an enamel coating film forming process of applying enamel paint to the surface of a surface to be coated such as an outer wall to form a base coating film, and this enamel coating film forming process. A multi-color pattern coating film forming process of applying a multi-color pattern forming paint to the surface of the enamel coating film formed in the process to form a multi-color pattern coating film. preferably. The enamel coating serves as a base coating.
The enamel coating applied to the surface of the coated surface hides defects such as stains and cracks on the coated surface and secures the effect of shielding ultraviolet rays, etc., and is used to form a multicolored pattern applied to the surface of the enamel coating. A high degree of designability is ensured by this paint.

EXAMPLES Next, the present invention will be specifically described with reference to Examples, but the present invention is not limited to these. In the examples, quantitative ratios and the like are values based on weight.

(Example 1)
In Example 1, white colored flakes were used as the first colored flakes, and gray colored flakes were used as the second colored flakes.

1. Preparation of first colored flakes and second colored flakes 1) Preparation of liquid raw material
A white liquid raw material for the first colored flakes and a gray liquid raw material for the second colored flakes were prepared based on the formulation shown in Table 1 below. An acrylic silicone resin (“Polydurex G-625” manufactured by Asahi Kasei Corporation) was used as the resin, and this was dispersed in water to form an acrylic resin emulsion. Titanium oxide (manufactured by Tayka Co., Ltd.: JR-701) and yellow iron oxide (manufactured by Toyocolor Co., Ltd.: Riofast Ocher RD-230) were used as coloring pigments, and calcium carbonate (manufactured by Toyo Fine Chemicals Co., Ltd.) was used as an extender pigment. : Whiten H) was used.

(Table 1) Mixing table of liquid raw materials

2) Film formation and pulverization of liquid raw materials Each of the obtained two types of liquid raw materials was applied onto a Teflon (registered trademark) sheet using a film applicator so that the film thickness after drying was 75±15 μm. After that, it was dried to form a film to obtain a dry coating film. The obtained dried coating film was peeled off from the Teflon sheet and finely pulverized using a pulverizer to obtain a white pulverized product (first colored flakes) and a gray pulverized product (second colored flakes).

3) Classification of Pulverized Matter In this example, the two types of pulverized matter (colored flakes) obtained were sieved and classified into large-diameter colored flakes, medium-diameter colored flakes and small-diameter colored flakes.

Specifically, for each of the two types of pulverized products (colored flakes), those that passed through a sieve with an opening size of 2.38 mm and did not pass through a sieve with an opening size of 1.30 mm were classified as large-diameter colored flakes. Those that passed through a sieve with an opening size of 1.09 mm and did not pass through a sieve with an opening size of 0.544 mm were designated as medium-diameter colored flakes, and those that passed through a sieve with an opening size of 0.544 mm were designated as small-diameter colored flakes.

2. Luminous material As the luster material having glass flakes as a base material, a glass flake surface treated with titanium oxide (manufactured by Nippon Sheet Glass Co., Ltd.: Metashine GT5600RS) was used. In this glitter material, the thickness of the glass flakes as the substrate is approximately 5 μm. Moreover, the average particle size of the luster material is approximately 600 μm. Moreover, among the glittering materials, those having a size that does not pass through a sieve with an opening size of 300 μm are contained in an amount of 50% by weight or more of the entire glittering material.

3. Binder Resin As the binder resin used in the paint for forming a multicolored pattern, an acrylic silicone resin (manufactured by Asahi Kasei Corporation: Polydurex G-625) was used. Using this resin, an emulsion resin solution (solid content: 45% by weight) was prepared as a binder resin solution.

4. Production of Paint for Forming Colorful Patterns Using the emulsion resin solution, the first colored flakes, the second resin flakes and the luster material, a paint was prepared according to the composition of Example 1 in Table 2.

(Table 2) Paint formulation and evaluation results

A film was formed on the surface of the ALC panel that had been processed with the multicolored pattern forming paint of Example 1 obtained. Specifically, after forming a film by applying a normal enamel paint to the surface of the ALC panel that had been subjected to the recessing process, the surface was spray-coated with a paint for forming a multicolored pattern.

Glossiness, specular reflectivity (specular reflectivity), and emphasizing effect of embossing were evaluated for the obtained coating film. Glitter was determined by visual inspection of the glitter of the coating film due to the glitter material. Specular reflectivity is an index for evaluating the feeling of glaring and powerful brightness. The sparkle of the material was determined visually. The effect of emphasizing the embossing process was evaluated by visual inspection of the degree of unevenness of the coated plate having embossed surfaces due to the embossing process.
Each evaluation was conducted by 5 to 10 people, with ⊙ when 80% or more of the evaluators judged good, ○ when 50% or more and less than 80% judged good, and 20% or more and less than 50% judged good. A case where it was judged to be good was evaluated as Δ, and a case where less than 20% was judged to be good was evaluated as ×. In addition, the evaluation in each example and comparative example described later was also performed in the same manner.

The multicolored pattern coating film thus obtained had excellent luster. In addition, the specular reflection property was good, and a glaring and powerful feeling of brilliance was obtained. In addition, the effect of emphasizing the engraving was good, and the engraving of the ALC panel, which was the object to be coated, was utilized, and the three-dimensional effect was good.

(Example 2) (Example 3) (Example 4)
These examples are compounding systems in which, in the compounding of Example 1, the compounding amount of the luster material whose base material is mainly glass flakes is increased. It is also different from Example 1 in that the first colored flakes and the second colored flakes are mixed not only with medium-sized flakes but also with large and small diameters.

A paint was made with the formulation of each example in Table 2, and in the same manner as in Example 1, a film was formed on the surface of an ALC panel that had been subjected to embossing. .

With regard to the obtained multicolored pattern coating films, Examples 2 and 3 were excellent in all of the brilliance, the specular reflection property, and the emphasizing effect of engraving. Example 4 was excellent in brilliance and specular reflectivity, and had a good emphasizing effect on the engraving.

(Example 5) (Example 6) (Example 7) (Example 8)
These examples are formulation systems in which the average particle size of the glittering material based on glass flakes is changed from the formulation of Example 2. As the luster material, one having an average particle size of 20 μm, one having an average particle size of 80 μm, one having an average particle size of 230 μm, and one having an average particle size of 480 μm were used.

The composition of each example in Table 2 was made into a paint and evaluated in the same manner as in Example 1.

All of the resulting multicolored pattern coating films had excellent luster. In addition, it was found that all of them had a good or better specular reflectivity, and in particular, the use of a luster material having a large average particle size provided excellent specular reflectivity and gave an excellent glaring and strong luster. In addition, the emphasizing effect of excavation was good in all cases. In particular, in Example 8 using a glittering material with an average particle size of 480 μm, the emphasizing effect of engraving was excellent, as in Example 2 using a glittering material with an average particle size of 600 μm.

(Example 9) (Example 10) (Example 11)
These examples are formulated systems with a third colored flake (black) in addition to the first colored flake and the second colored flake. Then, Example 9 using a glitter material based on glass flakes with an average particle size of 600 μm, Example 10 in which a glitter material based on glass flakes with an average particle size of 20 μm was added, and a pearl glitter material. Added Example 11 was considered.

Table 1 shows the blending table of the black liquid raw material, which is the basis of the third colored flakes. Carbon black (Ryofast Black M-232A manufactured by Toyocolor Co., Ltd.) was used as a coloring pigment, and the same calcium carbonate as used in Example 1 was used as an extender pigment. Further, as the pearl luster material, a mica base material coated with titanium dioxide and having a particle size of 15 to 150 μm was used.

Then, in the same manner as in Example 1, the liquid raw material (black liquid raw material) was formed into a film, pulverized, and the pulverized material was classified to obtain third colored flakes.

Using the obtained third colored flakes, paints were made according to the formulations of the examples in Table 2, and evaluated in the same manner as in Example 1.

With respect to the multicolored pattern coating films thus obtained, Examples 9 and 10 were excellent in brilliance, specular reflection, and emphasizing effect of embossing. In Example 11, in which a small amount of the pearl luster material was added, the effect of emphasizing luster, specular reflection, and embossing was good.

(Comparative Example 1) (Comparative Example 2) (Comparative Example 3)
These comparative examples are formulation systems using conventional colored gel particles (colored polymer particles). Comparative Examples 1 and 2 use only conventional colored gel particles without colored flakes, and Comparative Example 3 is a blended system using both colored flakes and conventional colored gel particles.

In this example, white colored gel particles and gray colored gel particles were used. Colored gel particles themselves are well known and can be obtained by various known techniques. The colored gel particles used in this example are described below.

First, a heat-sensitive gelling emulsion composition having a composition shown in Formulation a) in Table 3 below and an aqueous medium having a composition shown in Formulation b) were prepared by uniformly mixing each component. Polydurex X1767 manufactured by Asahi Kasei was used as the silicone-modified acrylic resin emulsion. As the aqueous ammonia solution of the zinc compound, Asahi Kasei Hardener A12 was used.
Then, the aqueous medium was heated to 70° C., and the heat-sensitive gelling emulsion composition was added dropwise over about 60 minutes while stirring (500 rpm). Stirring was continued for 10 minutes after the completion of the dropwise addition while heating so as to maintain the temperature at 70° C. 30 minutes after the completion of heating, the stirring was stopped and allowed to cool to obtain colored gel particles.

(Table 3) Colored gel particle recipe

Next, the resulting gel particles were sieved to be classified into large-sized colored gel particles, medium-sized colored gel particles and small-sized colored gel particles.

Specifically, for each of the two types of colored gel particles, those that pass through a sieve with an opening size of 2.38 mm and that do not pass through a sieve with an opening size of 1.30 mm are large-diameter colored gel particles. Those that passed through a 1.09 mm sieve but did not pass through a sieve with an opening size of 0.544 mm were taken as medium-diameter colored gel particles, and those that passed through a sieve with an opening size of 0.544 mm were taken as small-diameter colored gel particles.

A paint was prepared according to the composition of each comparative example in Table 2, and a film was formed on the surface of a recessed ALC panel in the same manner as in Example 1 to evaluate the brilliance, specular reflection, and effect of emphasizing the recess.

The obtained multicolored pattern coating film was excellent in gloss in all comparative examples. However, Comparative Examples 1 and 2 had a problem in the specular reflectivity and the emphasizing effect of engraving. Moreover, although the comparative example 3 had good specular reflectivity, there was a problem in the emphasizing effect of the engraving.

(Comparative Example 4)
As in Example 1, this is a compounding system using colored gel particles and a pearl luster material as a luster material.

The obtained multicolored pattern coating film had problems with the brightness, specular reflection, and emphasizing effect of embossing.

(Comparative Example 5)
This is a compounding example in which the same material as in Example 1 is used, but the compounding amount of the glittering material is reduced.

The resulting multicolored pattern coating film had poor brilliance, and had problems with respect to specular reflection and the effect of emphasizing embossing.

(Comparative Example 6)
This is a compounding example in which the same material as in Example 1 is used, but the compounding amount of the glittering material is increased.

The obtained multicolored pattern coating film was excellent in brilliance and specular reflectance, but had a problem in the emphasizing effect of the engraving.

Although the present invention has been described with reference to specific embodiments and examples, the present invention is not limited to the above-described embodiments and the like. Various changes and modifications are possible without departing from the scope of the appended claims.

Claims (12)

a binder resin;
a first colored flake;
a second colored flake having a different color tone than the first colored flake;
A coating material for forming a multicolored pattern, comprising a glittering material having glass flakes as a base material.
The first colored flakes and the second colored flakes are
thickness is 150 μm or less,
The paint for forming a multicolored pattern according to claim 1.
The first colored flakes and the second colored flakes are
Including those that do not pass through a sieve with an opening size of 1.3 mm,
The paint for forming a multicolored pattern according to claim 1 or 2.
The glitter material has an average particle size of 15 to 800 μm,
The paint for forming a multicolored pattern according to any one of claims 1 to 3.
The glitter material has a thickness of 0.1 to 10 μm of glass flakes as a base material.
The paint for forming a multicolored pattern according to any one of claims 1 to 4.
The glitter material is
0.5 to 5.0% by weight in the solid content of the paint for forming a multicolored pattern,
The paint for forming a multicolored pattern according to any one of claims 1 to 5.
The first colored flakes and the second colored flakes are
Contains acrylic silicone resin and pigment,
The paint for forming a multicolored pattern according to any one of claims 1 to 6.
a binder resin;
a first colored flake;
a second colored flake having a different color tone than the first colored flake;
a glittering material based on glass flakes,
The first colored flakes and the second colored flakes are
Including those that have a thickness of 150 μm or less and do not pass through a sieve with an opening size of 1.3 mm,
The glitter material is
An average particle size of 15 to 800 μm and a thickness of 0.1 to 10 μm,
The glitter material is
0.5 to 5.0% by weight in the solid content of the paint for forming a multicolored pattern,
Paint for forming multicolored patterns.
An enamel coating film forming step of applying an enamel paint to the surface of a surface to be coated such as an outer wall to form a film;
A multicolored pattern coating film formed by applying the multicolored pattern forming paint according to any one of claims 1 to 8 on the surface of the enamel coating film formed in the enamel coating film forming step. a film forming process;
A method for forming a film of a paint for forming a multicolored pattern, comprising:
A multi-colored pattern coating film is formed by the multi-colored pattern forming paint according to any one of claims 1 to 8,
painted goods.
A multi-color pattern coating film is formed on the surface side of the panel using the multi-color pattern forming paint according to any one of claims 1 to 8.
painted goods.
a binder resin;
a first colored flake;
a second colored flake having a different color tone than the first colored flake;
Equipped with a paint-making process of mixing a glitter material based on glass flakes to make a paint,
A method for producing a paint for forming a multicolored pattern.