JP2001131488A - Brilliant matte clear coating, brilliant matte composite coating film and method for forming it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating capable of forming a brilliant matte coating film possessing a quiet atmosphere in addition without detriment to a brilliant feeling and a composite coating film and a method for forming the composite coating film in consideration of defects of a conventional matte clear coating that overcoating thereof on a coating film formed from a brilliant coating spoils a good brilliant feeling and gives an unclear tarnished feeling without sufficiently producing the intended effect. SOLUTION: A brilliant pigment in an amount of 0.1-5.0% in terms of a weight percentage on the solids content of a coating (PWC) is further added to a matte coating comprising a transparent resin having incorporated therewith resin particulates and/or inorganic particulates to give a brilliant matte clear coating. A composite coating film comprises the above brilliant matte clear coating as the uppermost layer, and, formed adjoiningly thereunder, a brilliant coating film layer formed from a coating containing a brilliant pigment or a solid coating film layer formed from a solid coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a matte clear paint, and more particularly, to a matte clear paint and a matte clear paint capable of forming a coating film having both a calm matte feeling and a glittering feeling. The present invention relates to a composite coating film and a method for forming the same.

[0002]

2. Description of the Related Art Metallic coatings and the like using brilliant pigments have been conventionally used for coating outer panels of automobiles and the like in order to give appearances with excellent design properties, and various coating methods have been proposed. Well-known as the glitter pigments are aluminum flake pigments, mica pigments and the like,
These pigments have a relatively large particle size in order to give a brilliant feeling. Therefore, it is common to apply a clear coat for the purpose of preventing the pigment from protruding from the surface of the glittering coating film.

The above-mentioned clear coat can be formed from a clear paint made of a highly transparent resin as a raw material, but the formed clear coat is usually glossy, so that its use range is limited. Therefore, a paint whose gloss is suppressed by adding resin particles or inorganic particles to the clear paint is used as a mat clear paint. The matte coating film formed from this paint is widely supported because it has a calm atmosphere.

[0004]

However, if a coating film made of the above matte clear coating material is superimposed on a coating film made of a glittering paint, the glitter at the corner becomes indistinctly cloudy and the effect is not sufficiently exhibited. . Accordingly, an object of the present invention is to provide a paint capable of forming a glittering matte coating film having a calm atmosphere without losing the glittering feeling, and a composite coating film.

[0005]

The glittering matte clear coating composition of the present invention has a weight percentage (PWC) based on the solid content of the coating composition of the matting coating composition containing fine resin particles and / or fine inorganic particles in a transparent resin. An amount of the glitter pigment in an amount of 0.1 to 5.0% was further added.

[0006] The composite coating film of the present invention is a matte clear coating film whose uppermost layer is formed from the above glittering matte clear coating material. A glitter coating formed from a paint containing 1-20% (PWC) of a glitter pigment the same and / or different from the glitter pigment adjacent to the matte clear coating, It can be. The PWC ratio of each glitter pigment contained in the paint containing the glitter pigment and the matte clear paint is preferably 1: 0.
01 to 1: 0.5. Also, a composite coating film can be formed by providing a solid coating film formed of a solid paint adjacent to and below the matte clear coating film.

Further, according to the method for forming a composite coating film of the present invention, a coating film is first formed on a substrate by using a paint or a solid paint containing the above-mentioned glittering pigment, and the glittering film of the present invention is formed on this coating film. Form a coating film with matte clear paint. Partially forming a coating film with a brilliant matte clear coating, and forming the remaining part with a glossy clear coating to form a two-tone coating, or on a substrate, a coating containing the brilliant pigment described above or Form a coating film with solid paint,
It is also within the scope of the present invention to form a glossy clear coating on this coating and to form the matte clear coating on a portion of this coating to form a two-tone coating.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail.

Glossy matte clear paint Glossy matte clear paint is prepared by mixing a glitter paint, resin fine particles and / or inorganic fine particles with a clear paint.

Examples of the glittering pigment include leafing type or non-leafing type aluminum flake, metal titanium flake, alumina flake, stainless steel flake, silica flake, plate-like iron oxide, phthalocyanine flake, graphite, mica coated with titanium dioxide, coloring. Mica, metal-plated mica, metal-plated glass flakes, titanium dioxide-coated aluminum flakes,
Titanium dioxide-coated silicon oxide flakes, cobalt sulfide, manganese sulfide, titanium sulfide and the like.

The glitter pigment has a weight percentage (PWC) of 0.1 to 5.0%, preferably 0.5%, based on the solid content of the paint.
~ 3.0%. If the PWC is less than 0.1, glitter cannot be exhibited, and if it exceeds 5.0%, the amount of protrusion from the coating film surface increases and the durability is lost, and the glitter coating film or solid coating film provided below May conceal the design. When a glitter coating is provided below, the PWC ratio of the glitter pigment in the glitter paint forming the glitter coating to the glitter pigment contained in the matte clear paint is 1: 0.0
It is preferable to set it in the range of 1-1: 0.5. If the glittering pigment in the matte clear coating is less than the above 0.01, the glitter cannot be exhibited, and if it exceeds 0.5, the design of the glittering coating or solid coating provided below may be hidden. is there.

A coloring pigment can be used together with the above-mentioned brilliant pigment as long as the transparency of the coating film is not lost. Examples thereof include organic pigments such as azo lake pigments, phthalocyanine pigments, indigo pigments, perylene pigments, quinophthalone pigments, dioxazine pigments, quinacridone pigments, isoindolinone pigments, metal complex pigments, and the like. And inorganic pigments such as yellow iron oxide, red iron oxide, titanium dioxide, and carbon black. (Bright pigment +
The weight ratio of (color pigment) / resin solid content is (0.01 / 1)
~ (1/1), preferably (0.03 / 1) ~
(0.9 / 1) is more preferable.

Examples of the raw material resin for the fine resin particles used as a matting agent for the clear coating film include acrylic resin, polyacrylonitrile, polyurethane, polyamide, and polyimide. The particle size of the resin fine particles is preferably from 10 to 25 μm. If it is less than 10 μm, the matting effect is insufficient, and the feel is too smooth. If it is more than 25 μm, the surface of the matte clear top coating film becomes rough,
Gives a rough, tactile feel.

On the other hand, examples of the inorganic fine particles used for the same purpose include fine silica powder, clay, talc, and mica. The particle diameter of the inorganic fine particles is preferably 1 to 5 μm. 1μ
If it is less than m, the matting effect is insufficient, and the feel is too smooth. On the other hand, if it exceeds 5 μm, the surface of the matte clear top coating film becomes rough, and the texture becomes rough.

The above resin fine particles and inorganic fine particles may be used in combination, or may be used alone. When resin fine particles and inorganic fine particles are used in combination, a matte coating film having a soft atmosphere can be formed. At that time, the weight ratio is preferably 0.001 to 100, more preferably 0.1 to 10, with respect to the resin fine particles 1. It is also effective in design to use several types of resin fine particles and inorganic fine particles in combination. The addition amount of the whole fine particles is
It is preferably from 5 to 40% by weight based on the solid content. If the addition amount is less than 5% by weight, the matting effect cannot be obtained, and if it exceeds 40% by weight, the strength of the coating film becomes insufficient. The addition amount of the fine particles (solid content basis) is preferably adjusted as appropriate depending on the color of the base coating film. For example, in the case of a blue glittering paint or a solid paint, it is preferably 5 to 20% by weight, and in the case of a gray paint. Is preferably 10 to 40% by weight.

Examples of the coating film forming resin of the binder used in the bright matte clear coating material of the present invention include acrylic resin, polyester resin, alkyd resin, fluororesin, epoxy resin, polyurethane resin, polyether resin and the like. And these can be used alone or in combination of two or more. Among them, acrylic resins and polyester resins are preferred. When the base coating film is made of a bright coating material, a carboxyl group-containing polymer and an epoxy group-containing polymer can be exemplified as a film-forming resin particularly preferably used from the viewpoint of acid rain resistance.

The carboxyl group-containing polymer is a copolymer of a radical polymerizable monomer containing an acid anhydride group and another copolymerizable monomer, wherein the acid anhydride group is opened to form a half ester. Are preferred. Examples of the radical polymerizable monomer containing an acid anhydride group include maleic anhydride, itaconic anhydride, citraconic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride, and hymic anhydride. , Trimellitic anhydride, pyromellitic anhydride, succinic anhydride and the like, and these can be used in combination of two or more.

Other copolymerizable monomers include styrenes (styrene, α-methylstyrene, etc.), acrylates (methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, Butyl (meth) acrylate, n-propyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, (Meta)
N-dodecyl acrylate), (meth) acrylamide and the like. The above “(meth) acryl”
Represents acryl and methacryl.

The content of the above monomer in the carboxyl group-containing polymer is 10 to 40% by weight of a radical polymerizable monomer containing an acid anhydride group, and 90 to 60% by weight of another copolymerizable monomer. Is preferred. More preferably, the radical polymerizable monomer is 15 to 30% by weight, and the other copolymerizable monomer is 85 to 70% by weight.

The copolymerization of a radical polymerizable monomer containing an acid anhydride group with another copolymerizable monomer is carried out by a known method,
For example, it can be performed by a radical polymerization method or the like. The number average molecular weight of the carboxyl group-containing polymer is 500 to 40.
000, and particularly preferably 1,000 to 20,000.

The half-esterification is performed after the copolymerization. The half esterifying agent is a low molecular weight alcohol (methanol, ethanol, propanol, butanol, methyl cellosolve, ethyl cellosolve, etc.). The half esterification reaction is carried out at a temperature of room temperature to 120 ° C. in the presence of a catalyst (tertiary amines such as triethylamine and tributylamine).

The epoxy group-containing polymer is composed of 30 to 70% by weight of a radical polymerizable monomer having an epoxy group and 10 to 70% by weight of a radical polymerizable monomer having a hydroxyl group.
A copolymer of 50% by weight and the remaining amount of other radically polymerizable monomers, wherein the epoxy equivalent is 100 to 800,
Preferably from 200 to 600, with a hydroxy equivalent of 200
~ 1200, preferably 400-1000. The epoxy group-containing polymer has 2 to 10, preferably 3 to 8, epoxy groups in the molecule, and has 2 to 1 hydroxyl groups.
It has two, preferably four to ten.

Examples of the radical polymerizable monomer having an epoxy group include glycidyl (meth) acrylate,
3,4-epoxycyclohexanylmethyl methacrylate and the like. The radical polymerizable monomer having a hydroxyl group includes hydroxymethyl (meth) acrylate, hydroxyethyl (meth) acrylate, (meth)
Radical polymerizable monomers having a hydroxyl group such as hydroxypropyl acrylate, hydroxybutyl (meth) acrylate, and N-methylol acrylamine are exemplified. Other radically polymerizable monomers may be the same as those used for the carboxyl group-containing polymer.

The compounding amount of the carboxyl group-containing polymer and the epoxy group-containing polymer is 100: 50 to 1 by weight.
00: 250 is preferred. Each polymer is used at a required viscosity using a diluent.

On the other hand, preferred acrylic resins as the above-mentioned film-forming resin include hydroxymethyl (meth) acrylate, hydroxyethyl (meth) acrylate and 2-hydroxyethyl (meth) acrylate, which are ring-opened adducts of caprolactone. , Hydroxybutyl (meth) acrylate,
Hydroxyl group-containing (meth) such as N-methylolacrylamide
Acrylic ester monomers, oxirane ring-containing monomers such as glycidyl (meth) acrylate, and ethylenically unsaturated monomers having a carboxyl group such as (meth) acrylic acid, crotonic acid, itaconic acid, fumaric acid, and maleic acid Monomers and methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate,
It can be obtained by polymerizing at least one kind of alkyl (meth) acrylate such as n-octyl (meth) acrylate and n-dodecyl (meth) acrylate by an ordinary method. Further copolymerizable (meth) acrylonitrile, styrene, (meth) acrylamide, dimethylacrylamide, N, N-dimethylpropylacrylamide, N-butoxymethylacrylamide, styrene, α-methylstyrene, itaconic acid, maleic acid, acetic acid Vinyl and the like may be blended. The number average molecular weight of the acrylic resin is preferably from 1,800 to 100,000, more preferably from 5,000 to 20,000.

The polyester resin is obtained by polycondensing (esterifying) a polyhydric alcohol with a polybasic acid or its anhydride. The number average molecular weight of the polyester resin is preferably from 200 to 10,000, and from 300 to 60.
00 is more preferred.

Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, 1,3-butylene glycol, 1,6-hexanediol, diethylene glycol, dipropylene glycol, neopentyl glycol, triethylene glycol, glycerin, trimethylolethane, Trimethylolpropane, pentaerythrit, dipentaerythrit and the like are preferable, and it is more preferable to use a combination of two or more of these polyhydric alcohols.

As the polybasic acid or its anhydride,
Phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, succinic anhydride, adipic acid, azelaic acid, sebacic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, maleic anhydride, fumaric acid, itaconic acid, anhydride Trimellitic acid and the like are preferable, and it is more preferable to use these in combination of two or more.

The resin for forming a coating film includes a curable type and a lacquer type, and usually a curable type is used. In the case of a type having curability, heating or heating is performed by mixing and using amino resins such as melamine resins, (block) polyisocyanate compounds, amines, polyamides, and polycarboxylic acids as crosslinking agents. The curing reaction can proceed at room temperature. It is also possible to use a lacquer type coating film forming resin having no curability and a curable type in combination.

Examples of the amino resin include a condensate obtained by reacting one or a mixture of two or more amino compounds such as melamine, urea and benzoguanamine with formaldehyde, and a reaction of a lower alcohol such as methanol or butanol with the condensate. Alkyl etherified melamine resin. The number average molecular weight of such an alkyl etherified melamine resin is preferably from 400 to 2,000.

As the above blocked polyisocyanate compound, hexamethylene diisocyanate (HMDI)
Polyfunctional isocyanates such as aliphatic polyfunctional isocyanates such as isophorone diisocyanate (IPDI) and polyisocyanate compounds such as diphenylmethane-4,4'-diisocyanate (MDI) and hydrogenated MDI. One that is completely blocked.

When the binder contains a crosslinking agent, the ratio of the coating film forming resin to the crosslinking agent is 90 to 50% by weight in terms of solid content, and the crosslinking agent is 10 to 50%.
%, Preferably 85 to 60% by weight.
% By weight, and the cross-linking agent is 15 to 40% by weight. If the cross-linking agent is less than 10% by weight (90% by weight
Is exceeded), the crosslinking in the coating film is not sufficient. On the other hand, if the cross-linking agent exceeds 50% by weight (the resin for forming a coating film is less than 50% by weight), the storage stability of the coating composition is reduced and the curing speed is increased.

In addition, various additives can be added within a range that does not impair the glitter, matting and transparency of the glitter matting clear paint. Examples include kaolin,
Extender pigments such as diatomaceous earth, barium carbonate, etc., polyamide wax which is a lubricating dispersion of aliphatic amide, polyethylene wax which is a colloidal dispersion mainly composed of polyethylene oxide, anti-settling agent, curing catalyst, ultraviolet absorber, anti-oxidant , A leveling agent, a surface conditioner such as silicone or an organic polymer, an anti-sagging agent, a thickener, an antifoaming agent, and a crosslinkable polymer particle (microgel). The performance of paints and coatings can be improved by blending these additives at a ratio of 15 parts by weight or less with respect to 100 parts by weight of the binder (based on solid content).

The bright matte clear coating composition of the present invention is provided in a form in which the above components are usually dissolved or dispersed in a solvent. Any solvent may be used as long as it dissolves or disperses the binder, and an organic solvent and / or water is used. Examples of the organic solvent include those commonly used in the coatings field, for example, toluene,
Examples thereof include hydrocarbons such as xylene, ketones such as acetone and methyl ethyl ketone, esters such as ethyl acetate, butyl acetate, cellosolve acetate, and butyl cellosolve, and alcohols. However, when the use of an organic solvent is regulated from the viewpoint of environmental protection, it is preferable to use water. In this case, an appropriate amount of a hydrophilic organic solvent may be contained. The preferable addition amount of the solvent is 30 to 150% by weight based on the film-forming resin.

Glitter paint The glitter paint is formed adjacent to and below the paint film formed from the glitter matte clear paint of the present invention, and forms a paint film which gives glitter such as metallic luster and mica luster. Used to The components used in the preparation of the glittering paints, that is, the types, amounts and blending ratios of the color pigment, the coating film forming resin, the crosslinking agent, and other additives are the same as those of the glittering matte paint described above. As the glitter pigment, the same and / or different pigments as those used in the glitter matting paint of the present invention can be used, but the blending amount is 1 to 20%, preferably 5 to 15% by PWC. . If the amount is less than 1%, glitter cannot be exhibited, and if it exceeds 20%, the strength of the coating film is reduced, which is not practical.

Solid paints Solid paints do not contain the above-mentioned brilliant pigments, their coating colors are based on colored pigments, and usually no clear coat is used. However, when the glittering matte clear coating film of the present invention is formed on the solid coating film, a new design in which a solid color has a subtle glittering feeling can be obtained.
The components used in the preparation of the solid paint, that is, the color pigment, the coating film-forming resin, the crosslinking agent, and the types, amounts and blending ratios of the other additives are the same as those of the above-mentioned glittering matte paint. However, preferred examples of the resin for forming a coating film include an aminoalkyd resin-based resin in addition to those described above. The weight ratio of the coloring pigment to the solid content of the paint is 0.1.
01/1 to 1/1, preferably 0.03 / 1 to 0.9 /
1 is more preferred.

[0037] As the Hinurimotozai coating subject to be coated substrate, iron, aluminum,
Metals such as copper or their alloys, glass, cement,
Inorganic materials such as concrete, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyamide, acrylic resin, vinylidene chloride resin, polycarbonate,
Resins such as polyurethane and epoxy resin and various FRP
And natural or synthetic materials such as wood, fiber materials (paper, cloth, etc.), and processed products thereof.

When the substrate to be coated is a metal, the substrate to be coated is subjected to a degreasing treatment, a chemical conversion treatment, an electrodeposition coating, an intermediate coating and the like, and then the above-mentioned glittering paint or solid paint is applied. Is preferred. The intermediate coating is performed for hiding the base, imparting chipping resistance, and ensuring adhesion with the top coat.

Formation of Composite Coating Film The composite coating film of the present invention is formed on the lower coating film layer by wet-on-wet (W / W) or wet-on-dry (W
/ D). The above W / W is
After forming the lower layer coating film, it is a method of drying by air drying or the like, and coating the coating film thereon in an uncured or semi-cured state. This is a method in which the upper coating film is applied to the lower coating film which has been baked and cured. The coating method for forming each coating layer is not particularly limited, but a spray method, a roll coater method, or the like is preferable,
It is also possible to apply each coating layer several times. When the coating layer is baked, baking is performed at 80 to 160 ° C. for a predetermined time.

In the present invention, before forming the glitter coating layer on the substrate to be coated, the base coating layer can be formed using, for example, a gray base coating or a color base coating. By laminating a transparent brilliant coating layer on this base coating layer, a composite color is developed and the design can be enhanced. The same binders and pigments as the above-mentioned glittering matting paint can be used for the binder, pigment and optional additives to be added to the base paint. The base coating layer is
It may be formed from any of a solvent type paint, an aqueous paint and a powder type paint. When a coating film layer is further formed below the base coating film layer, the lower coating film layer is formed by W / D.
It is preferable to form a base coating layer.

In the case where a transparent glittering coating layer and a base coating layer are combined, the base coating layer preferably has a brightness of N6 to 10 in a Munsell display system. When the base coating layer is a clear coating layer, the brightness of the undercoating layer or the substrate to be coated under the clear coating layer is N6.
It is preferably from 10 to 10. By setting the lightness of the base coating layer to lightness N6 to 10, more preferably N8 to N10, a composite coating film free from shadow unevenness and yellowing can be obtained. The dry thickness of the base coating layer is preferably 30 to 200 μm, and if it is outside this range, the appearance of the coating film may be deteriorated. More preferably, 30 to 50
μm.

Next, a glitter coating layer is formed on the substrate to be coated or the base coating layer using the glitter coating, or a solid coating layer is formed on the substrate to be coated. I do. The glitter coating layer is preferably formed by W / D when the base coating layer is present. The dry film thickness of the glittering coating layer or the solid coating layer is preferably from 10 to 100 μm, more preferably from 20 to 50 μm.

Further, at least one glitter matte clear coating layer made of the glitter matte clear paint of the present invention is formed as a top coat layer on the glitter coat layer or the solid coat layer. When a large amount of glitter pigment is contained in the glitter coating layer, the smoothness of the surface can be improved by coating two or more matte clear coating layers. The matte clear coating layer is formed according to the above W / W
It is preferable to use In the case where the matte clear paint is applied a plurality of times, the matte clear paint may be applied and baked at the same time after the final clear paint is applied, and may not be completely cured at the stage when the matte clear paint is initially applied.
The dry film thickness of the matte clear top coat layer is 30 to 40.
0 μm is preferable, and if it is out of this range, the appearance of the coating film may be deteriorated. More preferably, it is 50 to 200 μm.

As the matte clear top coat layer, in addition to the method of applying the brilliant matte clear paint of the present invention to the entire surface, two-tone coating is performed by partially coating and then coating the rest with a glossy clear paint. A two-tone coating film can be formed by forming a coating film, or first coating one or more times with a glossy clear paint, and coating a part of the coated surface with the matte clear paint of the present invention.

[0045]

EXAMPLES Next, the present invention will be described more specifically with reference to examples and comparative examples, but the present invention is not limited to these examples. In addition, the compounding amount represents a weight part unless there is particular notice.

Examples 1 to 8 and Comparative Examples 1 to 4 Preparation of Coated Substrates Dull steel plates (length 300 mm, width 100 mm and thickness 0.8 mm) were treated with a zinc phosphate treating agent ("Surfdyne SD2").
000 "(manufactured by Nippon Paint Co., Ltd.), and then a cationic electrodeposition paint (" Power Top U-50 ", manufactured by Nippon Paint Co., Ltd.) was electrodeposited so as to have a dry film thickness of 25 [mu] m. Next, after baking at 160 ° C. for 30 minutes, the following base paint is applied by air spraying so as to have a dry film thickness of 40 μm, and baked at 140 ° C. for 30 minutes to form three types of base coating layers. Material 1A
And 1B.

Base paint base material 1A: "Olga S-90 Sealer White (N
9) ", Nippon Paint Co., Ltd., Base material 1B:" Olga S-90 Sealer Light Gray (N
6) ", manufactured by Nippon Paint Co., Ltd.

Preparation of glitter paint Acrylic resin (styrene / methyl methacrylate / ethyl methacrylate / hydroxyethyl methacrylate /
Methacrylic acid copolymer, number average molecular weight about 20,000
0, hydroxyl value 45, acid value 15, solid content 50% by weight);
Melamine resin (“Uban 20SE”, manufactured by Mitsui Chemicals, Inc.
And a binder obtained by blending a solid content of 60% by weight with a solid content ratio of 80:20, and an aluminum flake pigment having an average particle diameter of 18 μm (“Aluminum Paste MH-8801”, Asahi Kasei Corporation) Mica pigment ("Iliodin 502WII", manufactured by Merck, referred to as glittering pigment B), mica pigment ("Iriodin 215WII", manufactured by Merck, referred to as glittering pigment C), and coloring pigment (manufactured by Merck, Inc.) Carbon black: coloring pigment T1
Phthalocyanine blue: referred to as color pigment T2)
Were blended at the ratios shown in Table 1. Then, an organic solvent (weight ratio of toluene / xylene / ethyl acetate / butyl acetate = 7)
0/15/10/5) with a stirrer so as to obtain an appropriate coating viscosity to prepare a glittering paint.

Solid paint S1: "Orga G-75 blue color", a bright matte clear paint manufactured by Nippon Paint Co., Ltd. The bright matte clear paint is prepared by mixing acrylic resin particles as a matting agent into the following two types of clear paints. (Matte agent P
1) or fine silica powder (referred to as matting agent P2)
And the glitter pigment A was blended. The amounts are shown in Table 1. 2A: Acrylic resin solvent-based clear paint (“Super Lac O-130 Clear”, manufactured by Nippon Paint Co., Ltd.) 2B: Solvent-based clear paint composed of a blend of a carboxyl group-containing polymer and an epoxy group-containing polymer (“Macflow O-130 520 Clear ", manufactured by Nippon Paint Co., Ltd.)

Formation of Multi-Layer Coating Film The coating substrate was coated with a brilliant coating layer with a brilliant coating composition shown in Table 1 or a solid coating layer with a solid coating composition, each having a dry film thickness of 30 μm. . Further W
/ W, the bright matte clear top coat layer was applied to a dry film thickness of 50 μm to form a multilayer coat. The baking condition was 140 ° C. for 20 minutes. The glitter of the obtained coating film was evaluated by the following evaluation method. Table 1 shows the results.

Evaluation method Brightness: The condition of the test plate was visually evaluated. 3: Bright feeling without fogging is recognized. 2 ... Some clouding but bright feeling. 1 ... Bright feeling but cloudy. 1 ^* ... No glittering. 1 ^** ... Coarse feeling on coating film.

[0052]

[Table 1]

Example 9 of Forming Two-Tone Coating Film A brilliant coating layer was applied to the base material 1B to be coated with the brilliant coating material of Example 1 so as to have a dry film thickness of 30 μm. Further, in W / W, about one half of the substrate to be coated was partially coated with the bright matte clear top coating film layer of Example 1 so as to have a dry film thickness of 50 μm, and the other half was a bright matte clear. A mask is formed so that a coating film is not formed on the overcoat film layer, and the glossy clear topcoat film layer is made to have a dry film thickness of 50 μm with a 2A glossy clear paint containing no matting fine particles and glitter pigment. Was partially coated to form a two-tone multilayer coating film. The baking condition was 140 ° C. for 20 minutes. The resulting coating is recognized as a two-tone coating,
As the glitter of the coating film, glitter without clouding was recognized.

Example 10 A brilliant coating layer was applied to the substrate 1B to be coated with the brilliant paint of Example 1 so that the dry film thickness became 30 μm. Further, in W / W, a glossy clear top coat layer was coated with a 2A glossy clear paint containing no matting fine particles and glittering pigment so as to have a dry film thickness of 50 μm.
Baked at 40 ° C. for 20 minutes. Next, a mask was applied, and about half of the substrate to be coated was coated with the bright matte clear top coat layer of Example 1 so that the dry film thickness became 50 μm.
Baking was performed at 40 ° C. for 20 minutes to form a two-tone multilayer coating film. The resulting coating is recognized as a two-tone coating,
As the glitter of the coating film, glitter without clouding was recognized.

[0055]

The brilliant matte clear coating composition of the present invention comprises:
Since the glittering pigment was further added to the matting paint containing the resin fine particles and / or the inorganic fine particles in the transparent resin, this paint was used for the top clear coat, and the glitter paint film was provided adjacently below. The composite coating film can form a glittering matte design that does not lose the glittering feeling and has a calm atmosphere.

When a solid coating is provided adjacent to and below the matte clear coating to form a composite coating,
New designs can be obtained that add subtle glitter to solid colors. Further, a two-tone coating film in which the glittering matte clear coating film is partially formed and the remainder is formed as a glossy clear coating film, and a glossy clear coating film on the glittering coating film or the solid coating film And a composite coating film consisting of a two-tone coating film having the matte clear coating film formed on a part of the glossy clear coating film can also be formed.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int. Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 5/29 C09D 5/29 // C09D 133/00 133/00 135/00 135/00 163/00 163 / 00 167/00 167/00 171/00 171/00 175/04 175/04 F term (reference) 4D075 AE03 CB02 CB04 CB37 DB02 DC12 EA02 EA43 EC10 EC11 EC54 4J038 CD091 CG141 CG142 CG162 DB001 DD001 DD121 DF001 DG001 DG002 DH002 DJ022 GA06 HA036 HA066 HA216 HA356 HA446 HA486 HA546 JC38 KA08 KA20 NA01 PA01 PA07 PA19 PC02 PC03 PC04 PC06 PC08 PC10

Claims (8)

[Claims] 1. A matte paint containing fine resin particles and / or fine inorganic particles in a transparent resin, a brilliant pigment having a weight percentage (PWC) of 0.1 to 5.0% based on the solid content of the paint. A glossy matte clear paint characterized by adding further. 2. A composite coating film formed on an object to be coated,
A glitter matte composite coating film, wherein the uppermost layer is a matte clear coating film formed from the glittering matte clear coating material. 3. A brilliant coating formed from a paint containing from 1 to 30% (PWC) of a brilliant pigment which is the same and / or different from the brilliant pigment, wherein the coating film adjacent to the matte clear coating film is adjacent thereto. The glittering matte composite coating film according to claim 2, which is a film. 4. A PWC ratio of a glitter pigment contained in the paint containing the glitter pigment and the matte clear paint,
The glittering matte composite coating film according to claim 3, wherein the ratio is 1: 0.01 to 1: 0.5. 5. The composite coating of claim 2, wherein the coating adjacent to the matte clear coating is a solid coating formed from a solid coating. 6. A coating film is formed on a base material by the coating material containing the glittering pigment according to claim 3 or the solid coating material according to claim 5, and the coating film according to claim 1 is formed on the coating film. A method for forming a composite coating film, comprising forming a coating film with a bright matte clear paint. 7. The composite according to claim 6, wherein a coating film made of the bright matte clear coating material is partially formed, and the remainder is formed by a glossy clear coating film to form a two-tone coating film. Method of forming a coating film. 8. A coating film is formed on a substrate by a coating material containing the glitter pigment according to claim 3 or a solid coating material according to claim 5, and a glossy clear coating film is formed on the coating film. 7. The method according to claim 6, wherein the matte clear coating film is formed on a part of the coating film to form a two-tone coating film.
3. The method for forming a composite coating film according to item 1.