JP2002371239A - Coating material containing colored aggregate and colored aggregate - Google Patents

Abstract

(57) [Problem] To provide a colored aggregate-containing coating material and a colored aggregate-containing coating material that can easily form a coating film having excellent weather resistance. SOLUTION: The coating material mainly comprising a colored aggregate and a synthetic resin, to which HALS is added, or the colored aggregate is cold water sand and / or a colored aggregate.
Further, in a coating material containing a colored aggregate having a paint coating layer on a colored aggregate, the paint coating layer contains HALS.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored aggregate-containing coating material and a colored aggregate-containing coating material used for painting a finishing surface such as an outer wall, an inner wall and a ceiling of a structure represented by a building. It is related to the coating material.

[0002]

2. Description of the Related Art Heretofore, a colored aggregate-containing coating material composed of a synthetic resin and a colored aggregate has been often used due to its texture such as the versatility of a coating film formed by the colored aggregate-containing coating material. . In addition, a coating film expressing a texture similar to a stone material such as granite, marble or sandstone may be obtained by using one or two or more of the colored aggregate-containing coating materials. As described above, the colored aggregate-containing coating material may be preferably used in order to obtain a high-grade coating film.

[0003]

However, since a coating film formed of a colored aggregate-containing coating material has poor weather resistance, the coating film formed of a colored aggregate-containing coating material is more transparent. Clear paint may be applied. By applying a transparent clear paint, the weather resistance as a coating film is improved. However, in order to obtain this coating film, a step of applying a transparent clear paint is required. There is a problem that the work efficiency is reduced.

[0004] The present invention has been made by focusing on the problems existing in the prior art as described above. An object of the present invention is to provide a colored aggregate-containing coating material and a colored aggregate-containing coating material that can easily form a coating film having excellent weather resistance.

[0005]

Means for Solving the Problems In order to achieve the above object, a colored aggregate-containing coating material of the invention according to claim 1 is a coating material containing a colored aggregate and a synthetic resin as main components. Hindered amine light stabilizer (hereinafter “HALS”)
And ) Is added.

[0006] A colored aggregate-containing coating material according to a second aspect of the present invention is the coating material according to the first aspect, wherein the colored aggregate is cold water sand and / or colored aggregate.

According to a third aspect of the present invention, there is provided a coating material containing a colored aggregate having a coating layer on a colored aggregate, wherein the coating layer contains HALS. .

[0008]

Embodiments of the present invention will be described below in detail. The colored aggregate-containing coating material of the present invention is obtained by adding HALS to a coating material containing a colored aggregate and a synthetic resin as main components.

First, a coating material containing a colored aggregate and a synthetic resin as main components is one in which particles of the colored aggregate are combined with each other by the synthetic resin to form a coating film. The colored aggregate is an aggregate having a color, and gives a coating film formed by the colored aggregate-containing coating material a sense of quality such as versatility and improves a design feeling.

The above-mentioned colored aggregate includes aggregates having a high transparency and a high concealing power, and aggregates having a high gloss and dull aggregates. A completely colorless and transparent aggregate has no color and is not a colored aggregate. However, it is possible to add a colorless and transparent aggregate within a range that does not affect the color tone of the colored aggregate-containing coating material.

The colored aggregate used in the colored aggregate-containing coating material is a colored one, and includes colored natural stones pulverized and ceramics pulverized Selven. In addition, there are colored aggregates such as artificially colored colored natural stones and crushed ceramics, and industrially produced colored stones.

The crushed colored natural stones include granite, serpentine, obsidian, fluorite, canary, shiratama, cold water, small cherry, lacquer snow, Mino haze, serpentine and other marble crushed grains, silica sand, natural fine gravel (kinka, Oiso, cherry sand) and the like. Furthermore, lightweight aggregates such as shirasu balloons, perlite, and foamed crushed glass can also be used.

The particle size of the colored aggregate used in the colored aggregate-containing coating material is preferably in the range of 37 to 2000 μm, more preferably in the range of 45 to 1000 μm. In the case of an aggregate finer than 37 μm, the coating film obtained from the colored aggregate-containing coating material may have little versatility and lack designability, and the stability of the coating material and the workability of the coating operation may be poor. In the case of aggregate larger than 2000 μm,
The finished surface of the coating film is rough, which is not desirable in design. 45
When a colored aggregate having a size of from 1000 μm to 1000 μm is used, the colored aggregate-containing coating material has good stability at the time of storage, and the formed coating film has a more desirable and well-balanced design.

As synthetic resins, acrylic resins, styrene resins, urethane resins, silicone resins, fluorine resins,
Epoxy resin, melamine resin, alkyd resin, vinyl chloride resin, vinyl acetate resin, those obtained by homopolymerization or copolymerization of resins such as polyester resin, those dissolved in organic solvent, those dispersed in water as an emulsion or What is dispersed in a weak solvent is used.

The synthetic resin may be any resin that forms a transparent film after curing and drying. The synthetic resin which becomes transparent after being dried and formed into a film is a binder in the colored aggregate-containing coating material, and also bonds the coated surface to the colored aggregate-containing coating material. Further, it is necessary that the material be transparent after being dried and formed into a film in order to utilize the color tone and texture of the aggregate and enhance the design feeling. Synthetic resin emulsions are preferably used because of the ease of use, ease of production, and availability of the colored aggregate-containing coating material.

The synthetic resin emulsion may be a general one which can be produced by a usual polymerization technique such as emulsion polymerization. For example, there is a synthetic resin emulsion manufactured from a resin such as an acrylic resin, a styrene resin, a urethane resin, a silicone resin, a fluorine resin, an epoxy resin, and a vinyl acetate resin.

From the viewpoint of suitability, physical properties, availability and the like as a colored aggregate-containing coating material, an acrylic synthetic resin emulsion or an acrylic styrene synthetic resin emulsion produced from an acrylic resin or a styrene resin is preferably used.
Further, in order to further improve the weather resistance, a urethane-based synthetic resin emulsion, a silicone-based synthetic resin emulsion, a fluorine-based synthetic resin emulsion, an acrylic silicone-based synthetic resin emulsion manufactured from a urethane resin, a silicone resin, and a fluororesin. Etc. may be used.

The synthetic resin emulsion preferably has good drying properties. If the drying properties are poor, if there is rainfall after applying the colored aggregate-containing coating material, if the applied colored aggregate-containing coating material is uncured or undried, it may run off is there. The glass transition temperature of the synthetic resin is preferably in the range of -20 to 50 ° C,
When the temperature is lower than −20 ° C., the coating film formed by the colored aggregate-containing coating material may be easily stained. When the temperature is higher than 50 ° C., the coating film may be easily cracked. A synthetic resin having a suitable glass transition temperature can be selected depending on the use of the contained coating material.

The solid content of the synthetic resin is preferably in the range of 5 to 50% by weight based on the solid content of the colored aggregate-containing coating material. 5% by weight
If the amount is less, the weather resistance of the coating film may be reduced and the coating film may become brittle. On the other hand, if it is more than 50% by weight, it may be easily stained. Further, other components of the colored aggregate-containing coating material include a surfactant used as a flame retardant such as a halogen-based, phosphorus-based or antimony trioxide-based compound, a defoaming agent, a dispersant, a wetting agent, and a film-forming aid. Ingredients commonly used in paints such as high-boiling solvents used as agents, antifreezing agents, thickeners for adjusting viscosity and viscosity, preservatives, antialgal agents, antifungal agents, etc. can be used. .

If necessary, a coloring component such as a coloring pigment or a white pigment such as titanium oxide can be added.

The HALS used in the present invention is for improving the weather resistance of a coating film formed from a colored aggregate-containing coating material. Improvement of the weather resistance of this coating film captures free radicals that affect the deterioration of the synthetic resin in the coating film,
This is due to decomposition and quenching of peroxide.

As the HALS, those having tetramethylpepyridine shown in Chemical formula 1 are preferably used.

Embedded image HALS having tetramethylpepyridine includes the following types according to the number of tetramethylpepyridine in one molecule.

When the number of tetramethylpepyridines is 1, 1- [2- [3- (3,5-di-t-butyl-4-
[Hydroxyphenyl) propionyloxy] ethyl]-
4- [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionyloxy] -2,2,6,6-tetramethylpiperidine, 4-benzoyloxy-2,
2,6,6-tetramethylpepyridine, N-methyl-3
-Dodecyl-1- (2,2,6,6-pentamethyl-4
-Piperidyl) pyrrolidine-2,5-dione and the like.

When the number of tetramethylpepyridines is 2, 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro [4.5] decane-2 , 4-dione, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2
2,6,6-pentamethyl-4-piperidyl) sebacate.

When the number of tetramethylpepyridines is 4, tetrakis (1,2,2,6,6-pentamethyl-
4-piperidyl) 1,2,3,4-butanetetracarboxylate, 1,2,2,6,6-pentamethyl-4-
Piperidyl / tridecyl 1,2,3,4 butanetetracarboxylate and the like can be mentioned. The HALS having an average molecular weight in the range of 200 to 1,000 is preferably used.

When the average molecular weight is less than 200, the coating may be spilled from the coating film formed by the colored aggregate-containing coating material, and the improvement of the weather resistance by HALS may be reduced. When the average molecular weight is more than 1000, the storage stability of the colored aggregate-containing coating material may be impaired, and the color tone of the formed coating film may be different from the desired color tone.

The HALS has a particle size of 0.1 μm to 1 μm.
Those having a range of 0 μm are preferred. If it is smaller than 0.1 μm, it may be difficult to obtain HALS. Also, 1
When it is larger than 0 μm, the design of the coating film may be affected.

The amount of the HALS to be added is preferably in the range of 0.01 to 1.0 part by weight based on 100 parts by weight of the solid content of the coating material. If the amount is less than 0.01 part by weight, it may not be possible to expect an improvement in the weather resistance of a coating film formed by the colored aggregate-containing coating material. When the amount is more than 1.0 part by weight, there is a case where there is not much difference from the one added by 1.0 part by weight. More preferably, the ratio is in the range of 0.05 part by weight to 0.5 part by weight. When it is within this range, sufficient weather resistance of the coating film can be expected.

The HALS may be added to the coating material during the production of the coating material or immediately before the use of the coating material. In addition, any method can be used as long as it can be uniformly mixed in the coating material. Generally, a method of mixing with a stirrer is often used. Further, it is preferable that HALS be easily mixed with a synthetic resin emulsion which is preferably used among synthetic resins.

Further, the combined use with an ultraviolet absorber (hereinafter referred to as "UVA") may further increase the weather resistance of the coating film. Since HALS does not absorb harmful light that causes deterioration of the coating film, the UVA that absorbs harmful ultraviolet light and converts it to harmless heat or kinetic energy is used in combination to improve the weather resistance of the coating film. It will increase. Further, by adding an antioxidant, further weather resistance can be obtained.

Examples of the UVA include benzotriazole, benzophenone, salicylate, cyanoacrylate, and oxanilide ultraviolet absorbers. Among these ultraviolet absorbers, benzotriazole-based and benzophenone-based ultraviolet absorbers are preferably used because they are stable to heat and light. Further, a benzotriazole-based ultraviolet absorber is more preferably used because it has a large synergistic effect with HALS.

The benzotriazole type ultraviolet absorber includes
2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- [2'-hydroxy-3 ',
5′-bis (α, α-dimethylbenzyl) phenyl] benzotriazole, 2- (2′-hydroxy-3 ′, 5
-Di-t-butyl-phenyl) -benzotriazole.

The benzophenone-based ultraviolet absorbers include
4-dihydroxybenzophenone, 2-hydroxy-
4-methoxybenzotriazole, 2-hydroxy-
4-methoxy benzotriazole-5-sulfonic acid and the like.

The combined use with an antioxidant may further increase the weather resistance of the coating film. The antioxidant can prevent thermal oxidation deterioration of the coating film. Antioxidants include phosphorus-based, phenol-based, and sulfur-based antioxidants. However, sulfur-based antioxidants are HALS
In some cases, phosphorus-based or phenol-based antioxidants are preferably used because they may reduce the effect of the compound. Further, phosphorus-based antioxidants are more preferably used because they have a large synergistic effect with HALS.

Examples of the phosphorus-based antioxidant include trisnonylphenyl phosphite, tris (2,4-di-t-butylphenyl) phosphite, distearylpentaerythritol diphosphite and the like. In addition, UVA
And an antioxidant can be used in combination.

In the case of the cold aggregate and / or the colored aggregate among the colored aggregates, the effect of the present invention may be remarkably exhibited. Cold water sand is a type of marble having calcium carbonate as a main component, and is obtained by grinding cold water stone to adjust the particle size. Although the appearance of the cold water sand is white particles, it is preferably used because the aggregate has transparency and the design of a coating film obtained from a colored aggregate-containing coating material using the same is improved.

By including the cold water sand in the paint containing the colored aggregate, it is possible to give a transparent feeling to the coating film formed from the paint, and it is possible to further improve the design feeling. In addition, it has excellent miscibility with paints and is easily available. However, since cold water sand is a transparent white particle, the coating film formed by the coating material containing the cold water sand, ultraviolet rays such as sunlight reach inside the coating film, and accelerate the deterioration of the whole coating film. Sometimes. Therefore, in many cases, the coating film formed by paint containing cold water sand,
The transparent clear paint was applied.
By adding ALS to the coating, the rate of deterioration of the entire coating film can be reduced.

[0038] The colored aggregate is obtained by coloring the aggregate, and the color of the aggregate is stabilized, whereby the color tone of the coating film is also stabilized. Many of the methods for coloring aggregates involve coloring the surface of the aggregates with coloring components such as paints, pigments, and glazes. Further, glass beads, plastic beads, and the like can be colored from the inside of the aggregate.

Aggregates used for coloring aggregates whose surface is colored with paints, pigments, glazes and the like include crushed colored natural stones such as marble and granite, silica sand, cold water sand, porcelain granules,
Glass beads, plastic beads, lightweight aggregates and the like are used. Colored aggregate obtained by coloring from the inside is the one that is colored from the inside in the manufacturing process of the aggregate, such as glass beads made into a substantially spherical glass,
There is a plastic bead made of a synthetic resin such as an acrylic resin in a substantially spherical shape.

Colored aggregates, compared to those obtained by pulverizing colored natural stones other than colored aggregates, those artificially colored or industrially produced have more stable color and particle diameters. In many cases, the application of the paint is stable, and the paint is excellent in stability. In particular, artificially colored silica sand, cold water sand, and porcelain granules are more preferably used because they are easily available and have excellent miscibility with synthetic resins.

However, since the colored aggregate is obtained by coloring the surface of the aggregate with paint or glaze, the coloring component of the colored aggregate may be discolored or faded by ultraviolet rays such as sunlight. Therefore, in many cases, a transparent clear paint is applied to a coating film formed by a paint containing a colored aggregate. However, by adding the HALS to the paint, a coloring component is added. Can be slowed down.

Silica sand is mainly composed of silicon dioxide, and is classified into a natural sand typified by river sand and sea sand, and a sand crushed silica powder. Cold water sand is mainly composed of calcium carbonate, and is obtained by crushing cold water stone to adjust the particle size. Ceramic crushed granules are obtained by crushing ceramics, and are used after adjusting the particle size. These aggregates can be appropriately selected and used. As described above, by adding HALS to a coating material containing a colored aggregate and a synthetic resin as main components,
A colored aggregate-containing coating material capable of easily forming a coating film having excellent weather resistance can be obtained.

Further, in addition to the above-mentioned constitution, in a coating material containing a colored aggregate having a paint coating layer on a colored aggregate, HALS is contained in the paint coating layer.
That is, when a colored aggregate is used as the colored aggregate, HALS is contained in the coating material for coating the colored aggregate, and the HA is added to the paint.
By using a colored aggregate having a paint coating layer formed thereon with a paint containing LS as a colored aggregate-containing coating material, it is possible to easily form a coating film having excellent weather resistance. Material can be obtained.

As described above, the colored aggregate is obtained by coloring the aggregate, and most of the methods of coloring the aggregate include a method of coloring the surface of the aggregate with a paint, a glaze, or the like. Since the coloring component is a paint, HALS can be contained, thereby forming a paint coating layer.

As the paint, an aqueous paint such as an acrylic resin, a silicone resin, a urethane resin, or a silicone acrylic resin, a solvent paint, or a solventless paint is used. Use those colored by the components. This paint can be appropriately selected according to the use and performance of the colored aggregate, but a water-based paint or a solvent-based paint is preferably used because the colored aggregate is easily manufactured.

As coloring pigments, inorganic and organic pigments and both of them can be used. As the coloring pigment, those usually used for paints such as titanium white, carbon black, oxide yellow, red iron oxide, cyanine blue, and cyanine green can be used. Those having good weather resistance are preferable.

In addition, this paint is generally blended with other additives such as a low-boiling alcohol, a high-boiling solvent, a surfactant, a thickener, a pH adjuster, a preservative and the like as additives. Ingredients can be used. High-boiling solvents are used as film-forming aids and antifreezing agents, and surfactants are used as defoamers, dispersants, wetting agents and the like. The thickener is
Used for viscosity and viscosity adjustment.

HALS is added to the paint having the above-described structure, and a paint coating layer is formed on the aggregate with the paint to obtain a colored aggregate. As the HALS, those described above can be used. The amount of addition is 0.1 parts by weight to 100 parts by weight of the synthetic resin component in the paint.
A range of 3.0 parts by weight is preferred. If the amount is less than 0.1 part by weight, it may not be possible to expect improvement of the weather resistance of the coating film formed by the colored aggregate-containing coating material containing the colored aggregate. If it is more than 3.0 parts by weight,
In some cases, there is not much difference from the addition of 3.0 parts by weight.

Next, a paint coating layer is formed on the aggregate using a paint. This forming method is not particularly limited. For example, the aggregate is put into a container, and the above-mentioned paint is sprayed by a spray or the like so as to be uniform over the entire aggregate while stirring with a mixer or the like, and the aggregate is coated with the paint. After the paint has been made uniform throughout the aggregate, the paint-coated aggregate is dried using hot air or the like while applying vibrations using a vibration dryer. Then, a colored aggregate having a paint coating layer can be obtained.

When the colored aggregate thus obtained is used as a colored aggregate-containing coating material, the particle size may be adjusted by a sieve or the like. When a colored aggregate having a coating layer containing HALS is used as the colored aggregate-containing coating material, the content of the colored aggregate in the solid content of the coating material is preferably in a range of 20 to 80% by weight. is there. When the amount is less than 20% by weight, the effect of improving the weather resistance by HALS is reduced. 8
When it is more than 0% by weight, the effect of HALS is less improved, but the effect is sufficient. 50-80
% By weight is a more preferred range.

The colored aggregate-containing coating material may contain an aggregate other than the colored aggregate. As the aggregate, the above-described colored aggregate can be used. The colored aggregate preferably has the same particle diameter as that of the colored aggregate. Thus, the coloring aggregate-containing coating material has excellent stability such as viscosity, and can be easily applied. The colored aggregate having the HALS-containing coating layer configured as described above can be used as a colored aggregate-containing coating material.

Next, a method of applying the colored aggregate-containing coating material and the colored aggregate-containing coating material configured as described above will be described. This colored aggregate-containing coating material or colored aggregate-containing coating material can be applied by a normal application method such as a brush, a roller, a spray, a trowel, and a spatula. Using an aggregate-containing coating material and / or a colored aggregate-containing coating material, it can be applied by a multicolor spray. The coating film formed by applying with a multicolor spray can form a more colorful film. The application method is appropriately selected as needed, and is not particularly limited.

Further, the colored aggregate-containing coating material or the colored aggregate-containing coating material is used as a sheet-like surface material coated on a flexible base material such as a nonwoven fabric by the above-described means. Can also. The sheet-like covering material is attached to the same site as the site to which the colored aggregate-containing coating material or the colored aggregate-containing coating material of the present invention is applied, using an adhesive.
Furthermore, a non-flexible base material coated with a colored aggregate-containing coating material can be used for an outer wall, an inner wall, a ceiling, and the like of a building.

As described above, according to this embodiment, the following effects are exhibited. A coating material containing a colored aggregate and a synthetic resin as main components to which HALS is added to obtain a colored aggregate-containing coating material that can easily form a coating film having excellent weather resistance. be able to.

The effect of the present invention is as follows because the colored aggregate is cold water sand and / or a colored aggregate.
It appears more prominently. In a coating material containing a colored aggregate having a paint coating layer in a colored aggregate, a coating film having excellent weather resistance can be easily formed by containing HALS in the paint coating layer. A colored aggregate-containing coating material can be obtained.

The colored aggregate used in the colored aggregate-containing coating material has a particle diameter in the range of 37 to 2,000 μm, so that the coating film obtained from the colored aggregate-containing coating material has less colorful appearance and It is a coating material having good properties, and has good stability of the coating material, workability of coating operation, and the like.

The synthetic resin, which forms a transparent film after curing and drying, makes use of the color tone and texture of the colored aggregate to enhance the design. The HALS having a particle size in the range of 0.1 μm to 10 μm makes it easy to obtain and does not affect the design of the coating film.

The amount of HALS to be added is 1
When the amount is from 0.01 parts by weight to 1.0 part by weight in 00 parts by weight, an improvement in weather resistance of a coating film formed by the colored aggregate-containing coating material can be expected. . Further, the weather resistance of the coating film may be further increased by adding UVA and / or an antioxidant.

HA based on 100 parts by weight of the synthetic resin component in the paint for forming the paint coating layer of the colored aggregate
By adding LS in the range of 0.1 part by weight to 3.0 parts by weight, it is possible to improve the weather resistance of the coating film formed by the colored aggregate-containing coating material containing the colored aggregate.

The colored aggregate having a coating layer containing HALS in the colored aggregate-containing coating material has a colored aggregate content of 20 to 80% by weight in the solid content of the coating material.
HALS is effective.

[0061]

EXAMPLES As a synthetic resin which becomes transparent after drying and forming a film, an acrylic synthetic resin emulsion having a glass transition temperature of 10 ° C. and a solid content of 45% was used.

The colored aggregate used was red water obtained by coloring cold water sand and quartz sand. Cold water sand has an average particle size of 55 μm
And 500 μm. For the colored aggregate, use sieves having openings of 300 μm and 850 μm,
Those having a particle diameter in the range of 00 μm or more and less than 850 μm were used. As a coloring component used for coloring, an enamel paint containing an acrylic synthetic resin emulsion as a main component was used. As other components, a film forming aid, an antifoaming agent,
Dispersants, wetting agents and thickeners were used. The following are examples of coating material formulations.

Example of Coating Material Formulation Acrylic Synthetic Resin Emulsion 250.0 (g) Cold Water Sand 500.0 (g) Colored Aggregate 500.0 (g) Film-forming Aid 30.0 (g) Defoaming Agent 0 (g) Dispersant 1.0 (g) Wetting agent 0.5 (g) Thickener 1.0 (g) Formulated water 15.5 (g) Total 1300.0 (g)

In Example 1, HA was added to the formulation of the coating material formulation.
LS was added, and the added colored aggregate-containing coating material was applied to a slate plate by spraying so as to have a thickness of about 3 mm to obtain a test body. HALS added to the colored aggregate-containing coating material has a tetramethylpepyridine number of 4,
2,2,6,6-pentamethyl-4-piperidyl / tridecyl 1,2,3,4 butanetetracarboxylate was used. The HALS has an average molecular weight of about 900 and an average particle size of 0.5 μm. The amount of addition was 1.0 part by weight based on 100 parts by weight of the solid content of the coating material.

In Example 2, HA was applied to the enamel paint used for coating the colored aggregate used in the formulation of the coating material formulation.
The one to which LS was added was used. Example 1 using the coating material
Specimens similar to were prepared. The HALS used was the same as that used in Example 1. The amount of HALS added was 2.0 parts by weight based on 100 parts by weight of the synthetic resin component in the paint.

As Comparative Example 1, the coating material of the coating material formulation was applied to a slate plate by spraying so as to have a thickness of about 3 mm. As Comparative Example 2, the coating material of the coating material formulation was applied to a slate plate by spraying so as to have a thickness of about 3 mm, and then a silicone-based solvent clear was applied.

The specimens of Example 1, Example 2, Comparative Example 1 and Comparative Example 2 were subjected to a one-year exposure test. The exposure test
The test specimen was placed on an exposure table at a condition of 30 ° on the south side installed on the roof of a three-story building. The roof of the building where the exposure table was installed was a place where there was no obstruction to block sunlight even in the winter solstice and summer solstice.

The degree of deterioration of the test pieces of Example 1, Example 2 and Comparative Example 2 after the exposure test was almost the same for all the test pieces. there were. However, the test piece of Comparative Example 1 had severe color fading of the coating film. In Comparative Example 2, since the silicone-based solvent clear was applied after the coating material was applied, it can be said that there was almost no deterioration. In addition, in Example 1, HALS was added to the coating material, and in Example 2, the coating layer of the colored aggregate contained HALS, so that there was almost no deterioration.

Next, the technical ideas that can be grasped from the above embodiment will be described below. The colored aggregate-containing paint according to claim 1, wherein the synthetic resin forms a transparent film after curing and drying. By this, the color tone of the colored aggregate,
Utilizing the texture, it enhances the design feeling.

The HALS has a particle diameter of 0.1 μm or more.
2. The structure according to claim 1, wherein the thickness is in a range of 10 μm.
2. A colored aggregate-containing paint according to item 1. This makes it easy to obtain and does not affect the design of the coating film.

The colored aggregate-containing paint according to claim 1, wherein the amount of the HALS added is in the range of 0.01 to 1.0 part by weight based on 100 parts by weight of the coating material. . This can be expected to improve the weather resistance of the coating film formed by the colored aggregate-containing coating material.

The colored aggregate-containing paint according to claim 1, further comprising UVA and / or an antioxidant. Thereby, the weather resistance of the coating film is further increased.

The color aggregate having a coating layer containing HALS in the color aggregate-containing coating material is characterized in that the content of the color aggregate in the solid content of the coating material is 20 to 80% by weight. The colored aggregate-containing paint according to claim 3, This has the effect of HALS.

[0074]

The present invention is configured as described above, and has the following effects. According to the colored aggregate-containing coating material of the first aspect of the present invention, a colored aggregate-containing coating material capable of easily forming a coating film having excellent weather resistance can be obtained.

According to the colored aggregate-containing coating material of the second aspect of the invention, in addition to the effect of the first aspect, the effect of the present invention appears more remarkably. According to the colored aggregate-containing coating material of the third aspect of the present invention, a colored aggregate-containing coating material capable of easily forming a coating film having excellent weather resistance can be obtained.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akihiro Nakagawa 2-457, Matsumoto-cho, Kakamigahara-shi, Gifu Kikusui Chemicals Co., Ltd. (72) Inventor Masaaki Seki 2-4-2, Marunouchi, Naka-ku, Nagoya Chemical industry Co., Ltd. F term (reference) 4J038 CC001 CC021 CD021 CD091 CF021 CG001 DA161 DB001 DD001 DG001 DL031 HA486 HA556 JB29 KA06 KA20 NA01 NA05 PB05

Claims (3)

[Claims] 1. A coating material containing a colored aggregate, characterized in that a hindered amine light stabilizer (HALS) is added to a coating material containing a colored aggregate and a synthetic resin as main components. 2. The colored aggregate-containing coating material according to claim 1, wherein the colored aggregate is cold water sand and / or colored aggregate. 3. A coating material containing a colored aggregate having a paint coating layer on a colored aggregate, the coating material containing a hindered amine light stabilizer (HALS).