JP2001164190A - Brilliant coating composition, coating film forming process and coated item - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a brilliant coating composition which can give a brilliant coating film which exhibits a metallic look of alumina and/or a particle look having a strong luminance of glass flakes even in a shade and has a shielding effect and to provide a coating film forming process and a coated item obtained by this process. SOLUTION: The brilliant coating composition contains (1) an aluminum flake pigment, (2) a metal-oxide-coated aluminum flake pigment and/or a metal- oxide-coated glass flake pigment and (3) a vehicle. The ratio of component (1) to component (2) satisfies (1)/(2)=90/10-20/80 (weight ratio).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brilliant coating composition, a method for forming a coating film, and a coated product coated by this method.

[0002]

2. Description of the Related Art In a field requiring a high design such as an automobile body, a coating film using a brilliant paint composition containing a brilliant material is required. As such, aluminum flake pigments and interference mica pigments are known. In this interference mica pigment, mica as a base material is coated with a metal oxide, and the interference color is determined by the coating thickness. When a coated plate on which a coating film containing these interference pigments and aluminum flake pigments such as interference mica is formed is viewed in a nearly vertical state, the color and the metallic appearance of the interference pigment having an interference color (highlight Part), and a color tone (shade part) in which the particle feeling of the interference mica disappears when the coated plate is viewed obliquely from above.

[0003]

A coating film containing a conventional interference mica pigment and an aluminum flake pigment has a design that does not exhibit a particle feeling of the interference mica pigment in a shade portion. Therefore, the problem to be solved by the present invention is to provide a glittering coating composition that can provide a glittering coating film that also exhibits a particle feeling of an interference pigment even in a shade portion and also imparts a hiding property.
An object of the present invention is to provide a method for forming a coating film and a coated article coated by the method.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies in view of the above-mentioned problems, and as a result, have reached the present invention. 1. It contains (1) an aluminum flake pigment, (2) a metal oxide-coated alumina flake pigment and / or a metal oxide-coated glass flake pigment, and (3) a vehicle. 1) / (2) = 90
A glittering coating composition containing the composition in a ratio of / 10 to 20/80 (mass ratio). 2. The ratio of (1) / (2) is 80/20 to 40/60.
The above-mentioned glittering coating composition having a (mass ratio). 3. The metal oxide-coated alumina flake pigment and the metal oxide-coated glass flake pigment are mixed with 90/10 to 5
The above glittering coating composition, which is contained at a ratio of 0/50 (mass ratio). 4. A method for forming a coating film in which a base coat layer is formed on a substrate using the above-mentioned glitter coating composition, and then a top coat layer is formed using a clear paint. 5. The above-mentioned coating film forming method, wherein the clear coating contains a carboxyl group-containing polymer and an epoxy group-containing polymer. 6. A coated article coated by the above-mentioned coating film forming method.

[0005]

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

Aluminum Flake Pigment The aluminum flake pigment contained in the glitter coating composition of the present invention is a pigment that imparts hiding properties and a metallic feeling to a coating film. The aluminum flake pigment may be a leafing, semi-leafing or non-leafing aluminum flake prepared by a usual method of pulverizing aluminum flake with a fatty acid such as stearic acid by a ball mill. The intended design can also be obtained by using a colored aluminum flake pigment. The preferred average particle size is in the range of 1 to 44 µm.

The content (PWC) of the aluminum flake pigment in the glitter coating composition of the present invention is preferably less than 5 to 20%, more preferably less than 5 to 12%. If it is less than 5%, the metallic feeling and hiding property may not be obtained, and if it exceeds 20%, the appearance of the coating film may be deteriorated.

Metal oxide-coated alumina flake pigment The glitter coating composition of the present invention contains a metal oxide-coated alumina flake pigment and / or a metal oxide-coated glass flake pigment. First, the metal oxide-coated alumina flake pigment will be described. The metal oxide-coated alumina flake pigment imparts a feeling of alumina particles to the coating film. The metal oxide-coated alumina flake pigment is obtained by converting aluminum oxide (A1 ₂ O ₃ ) to Fe ₂ O ₃ , Ti
It is coated with a metal oxide such as O ₂ , SnO ₂ , ZrO ₂ , and has an average long diameter of 3 to 60 μm, preferably 5 to 60 μm.
The thickness is 0.1 to 0.8 μm, preferably 0.2 to 0.4 μm. Further, those having high surface smoothness and a sharp particle size distribution are preferable because scattering by reflected light can be reduced. Further, when the surface of a flaky alumina flake pigment having an aspect ratio represented by a particle diameter / thickness of 20 or more is coated with a metal oxide, the pigment exhibits a highly brilliant glitter, and a coating film using the pigment is obtained. In both the highlight and shade positions, a new impression can be expressed by exhibiting a high-saturation particle feeling and a strong particle shine that were not obtained with conventional mica powder. The metal oxide-coated alumina flake pigment can obtain a desired hue by adjusting the type and amount (coating thickness) of the metal oxide to be coated. As such a metal oxide-coated alumina flake pigment, for example, “SDA-
And SDA series such as "SILVER WIII" (trade name).

The content (PWC) of the metal oxide-coated alumina flake pigment in the glitter coating composition of the present invention is as follows:
It is preferably from 0.01 to less than 20%, more preferably from 1 to less than 15%. If it is less than 0.01%, a design having a feeling of alumina particles may not be obtained, and if it exceeds 20%, the appearance of the coating film may be deteriorated.

Metal oxide-coated glass flake pigment The metal oxide-coated glass flake pigment contained in the glitter coating composition of the present invention imparts a particle sensation of the glass flake. Compared with the particle feeling of alumina of the coated alumina flake pigment, the feeling of luminance is much stronger. The metal oxide-coated glass flake pigment is a brilliant pigment in which the surface of a glass flake is coated with a metal oxide such as titanium oxide or iron oxide. The glass flake pigment has an average particle diameter of preferably 10 μm or more, less than 80 μm, and more preferably 10 to 60 μm when coated with a metal oxide. Average particle size is 10 μm
If it is less than 30, it is difficult to exhibit a brilliant effect exhibiting an interference color effect, and if it is 80 μm or more, poor appearance of the coating film occurs. The thickness is 0.1 to 10 μm, preferably 0.1 to 5 μm. When the thickness is less than 0.1 μm, an excessive share is applied at the time of coating circulation, and the glittering pigment is deformed or broken, causing a problem that the coating is discolored with time. Might be. The interference color exhibited by the metal oxide-coated glass flake pigment can be changed by adjusting the amount of the metal oxide to be coated (coating thickness). The coating film using the same exhibits a high color saturation and a strong particle shine from both the highlight and shade positions as in the case of the metal oxide-coated alumina flake pigment, and can express a new impression. As these metal oxide-coated glass flake pigments, EXTERIOR MEARLIN FIRE
The MIST series (manufactured by Engelhard) is commercially available.

The content (PWC) of the metal oxide-coated glass flake pigment in the glittering coating composition of the present invention is 0.1.
It is preferably from 01 to less than 20%, more preferably from 1 to less than 10%. If it is less than 0.01%, a design with a feeling of particles of the glass flakes may not be obtained, and if it exceeds 20%, the appearance of the coating film may be deteriorated.

Content Ratio The content ratio of (1) aluminum flake pigment and (2) metal oxide-coated alumina flake pigment or metal oxide-coated glass flake pigment in the glitter coating composition of the present invention is (1) / (2) ) = 90 / 10-20 / 80
(Mass ratio). Preferably, (1) / (2) = 8
0/20 to 40/60 (mass ratio). (1) /
When (2) is more than 90/10 (when (1) is too large), it is not possible to exhibit a design with a grainy feeling in the shade portion, and when it is less than 20/80 (when (1) is too small). In addition, the hiding power of the coating film becomes insufficient. When the metal oxide-coated alumina flake pigment and the metal oxide-coated glass flake pigment are used in combination, the mass ratio between the metal oxide-coated alumina flake pigment and the metal oxide-coated glass flake pigment is 90/10 to 50. / 50 is preferable, and 90/10 to 60/40 is more preferable. By setting it in this range, a synergistic effect between the metallic particle feeling of the metal oxide-coated alumina flake pigment and the glass particle feeling of the metal oxide-coated glass flake pigment can be obtained.

Vehicle The vehicle contained in the glitter coating composition of the present invention contains (1) aluminum flake pigment and (2) metal oxide-coated alumina flake pigment and / or metal oxide-coated glass flake pigment. And a film-forming resin and, if necessary, a crosslinking agent.

The resin for forming a coating film constituting the vehicle includes, for example, (a) an acrylic resin, (b) a polyester resin, (c) an alkyd resin, (d) a fluororesin,
(E) epoxy resin, (f) polyurethane resin, (g)
A polyether resin is mentioned, and in particular, an acrylic resin and a polyester resin are preferably used from the viewpoint of weather resistance. These can be used in combination of two or more. In addition, 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, it is used by being mixed with a cross-linking agent such as an amino resin or a (block) polyisocyanate compound, an amine-based, a polyamide-based, or a polyvalent carboxylic acid. Let it proceed. It is also possible to use a non-curable type coating film forming resin and a curable type together.

As the acrylic resin (a), a copolymer of an acrylic monomer and another ethylenically unsaturated monomer can be exemplified. Acrylic monomers that can be used in the above copolymerization include acrylic acid or methacrylic acid methyl, ethyl, propyl, n-butyl, i-butyl, t-butyl, 2-ethylhexyl, lauryl, phenyl, benzyl, 2-hydroxy Esterified compounds such as ethyl and 2-hydroxypropyl, ring-opened adducts of caprolactone of acrylic acid or 2-hydroxyethyl methacrylate, glycidyl acrylate, glycidyl methacrylate, acrylamide, methacrylamide and N-
Methylol acrylamide, polyhydric alcohol (meth)
There are acrylic esters and the like. Other ethylenically unsaturated monomers copolymerizable therewith include styrene, α-methylstyrene, itaconic acid, maleic acid, vinyl acetate and the like.

Examples of the polyester resin (b) include saturated polyester resins and unsaturated polyester resins. Examples thereof include condensates obtained by heat-condensing a polybasic acid and a polyhydric alcohol. Examples of the polybasic acid include saturated polybasic acids and unsaturated polybasic acids.Examples of the saturated polybasic acids include phthalic anhydride, terephthalic acid, and succinic acid. Examples include maleic acid, maleic anhydride, and fumaric acid. Examples of polyhydric alcohols include dihydric alcohols and trihydric alcohols.Examples of dihydric alcohols include ethylene glycol and diethylene glycol, and examples of trihydric alcohols include glycerin,
Trimethylolpropane.

The alkyd resin (c) includes, in addition to the above polybasic acids and polyhydric alcohols, fats and oils and fatty acids (soybean oil, linseed oil, coconut oil, stearic acid, etc.), natural resins (rosin, amber, etc.) and the like. An alkyd resin obtained by reacting the above-mentioned denaturing agent can be used.

The fluorine resin (d) may be any one of vinylidene fluoride resin and ethylene tetrafluoride resin or a mixture thereof, a fluoroolefin and a hydroxyl group-containing polymerizable compound, and other copolymerizable vinyl resins. Examples include resins made of various fluorine-based copolymers obtained by copolymerizing monomers made of compounds.

Examples of the epoxy resin (e) include a resin obtained by a reaction between bisphenol and epichlorohydrin. Examples of the bisphenol include bisphenols A and F. Examples of the bisphenol type epoxy resin include, for example, Epicoat 828, Epicoat 1001, Epicoat 100
4, Epicoat 1007, Epicoat 1009 (all manufactured by Shell Chemical Co., Ltd.), and those obtained by chain-extending these with an appropriate chain extender can also be used.

Examples of the polyurethane resin (f) include a resin having a urethane bond obtained by various polyol components such as acryl, polyester, polyether and polycarbonate and a polyisocyanate compound. Examples of the polyisocyanate compound include 2,4-tolylene diisocyanate (2,4-TD
I), 2,6-tolylene diisocyanate (2,6-T
DI), and mixtures thereof (TDI), diphenylmethane-4,4′-diisocyanate (4,4′-MD
I), diphenylmethane-2,4'-diisocyanate (2,4'-MDI), and mixtures thereof (MDI)
Naphthalene-1,5-diisocyanate (NDI),
3,3'-dimethyl-4,4'-biphenylene diisocyanate, xylylene diisocyanate (XDI), dicyclohexylmethane diisocyanate (hydrogenated HD
I), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), hydrogenated xylylene diisocyanate (HXDI) and the like.

The above (g) polyether resin is a polymer or copolymer having an ether bond, such as polyoxyethylene polyether, polyoxypropylene polyether, polyoxybutylene polyether, or bisphenol. A polyether resin having at least two hydroxyl groups per molecule, such as a polyether derived from an aromatic polyhydroxy compound such as A or bisphenol F, can be mentioned. Further, the polyether resin and succinic acid, adipic acid, sebacic acid, phthalic acid, isophthalic acid, terephthalic acid, polyvalent carboxylic acids such as trimellitic acid, or a reactive derivative such as an acid anhydride thereof. Carboxyl group-containing polyether resin obtained by the above method.

When the vehicle contains a crosslinking agent, the ratio of the coating film forming resin to the crosslinking agent is 90 to 50% by mass and the crosslinking agent is 10 to 50% by mass in terms of solid content. Yes, preferably 85 to 60% by mass of the resin for forming the coating film and 15 to 40% by mass of the crosslinking agent. If the amount of the crosslinking agent is less than 10% by mass (the amount of the resin for forming a coating film exceeds 90% by mass), the crosslinking in the coating film may not be sufficient. On the other hand, if the cross-linking agent exceeds 50% by mass (the resin for forming a coating film is less than 50% by mass), the storage stability of the coating composition is reduced and the curing speed is increased. There is.

Other brilliant pigments The brilliant coating composition of the present invention comprises other brilliancy other than the above (1) aluminum flake pigment and (2) metal oxide-coated alumina flake pigment or metal oxide-coated glass flake pigment. Pigments that have been conventionally used for paints can be included. As such, for example, mica pigment, metal titanium flake, graphite, stainless flake, plate-like iron oxide,
Examples include phthalocyanine flakes, hologram pigments or metal-plated glass flakes. The other brilliant pigments should be contained in any amount within the range not impairing the effects of (1) aluminum flake pigment and (2) metal oxide-coated alumina flake pigment or metal oxide-coated glass flake pigment. Can be.

Colored pigment The glitter coating composition of the present invention can contain a colored pigment. Examples of such pigments include those conventionally used for paints.Examples of organic pigments include azo lake pigments, phthalocyanine pigments, indico pigments, berylen pigments, quinophthalone pigments, and dioxazines. Pigments, quinacridone pigments, isoindolinone pigments, metal complex pigments, and the like. Inorganic pigments include, for example, graphite, yellow iron oxide, red iron oxide, titanium dioxide, and carbon black. The amount of the coloring pigment to be added can be arbitrarily set in accordance with the development of a deep hue as long as the effect of the mica pigment is not hindered. Also, various extender pigments and the like can be used in combination.
In the case where the above-mentioned other glitter pigments and coloring pigments are used, the total content (PWC) of the pigment as a whole is preferably less than 50%, more preferably less than 30%. If it exceeds 50%, the appearance of the coating film deteriorates.

Other Components Other than the above components, the glitter coating composition of the present invention may further comprise, in addition to the above components, a polyamide wax which is a lubricating dispersion of an aliphatic amide, and a polyethylene wax which is a colloidal dispersion mainly composed of polyethylene oxide. A curing catalyst, an ultraviolet absorber, an antioxidant, a leveling agent, a surface conditioner such as silicon or an organic polymer, a sagging agent, a thickener, a defoaming agent, a lubricant, a crosslinkable polymer particle (microgel), etc. Can be added. The performance of paints and coatings can be improved by blending these additives at a ratio of 15 parts by mass or less based on 100 parts by mass of the vehicle (based on solid content).

The glitter coating composition of the present invention is provided in a form in which the above-mentioned components are usually dissolved or dispersed in a solvent. Any solvent may be used as long as it dissolves or disperses the vehicle, and an organic solvent and / or water may be used. Examples of the organic solvent include those commonly used in the field of coatings. Examples thereof include hydrocarbons of toluene and xylene, ketones of acetone and methyl ethyl ketone, ethyl acetate, butyl acetate, cellosolve acetate, esters of butyl cellosolve, and alcohols. When the use of an organic solvent is regulated from the viewpoint of the environment, it is preferable to use water. In this case, an appropriate amount of a hydrophilic organic solvent may be contained.

The film forming method of a coating film forming method of the present invention is applied onto a substrate, after forming the glistening coating as base coat layer, at least one layer of clear paint as a top coat layer on the It is applied to form a top coat layer.

The above-mentioned base material is not limited, and metals such as iron, aluminum, copper and alloys thereof; inorganic materials such as glass, cement, concrete, etc .; polyethylene resin, polypropylene resin, ethylene-vinyl acetate Copolymer resin, polyamide resin, acrylic resin,
Examples include resins such as vinylidene chloride resin, polycarbonate resin, polyurethane resin and epoxy resin, and plastic materials such as various FRPs; natural and synthetic materials such as wood and fiber materials (paper, cloth, etc.).

In the method for forming a coating film of the present invention, the glitter coating composition of the present invention is applied to the above substrate directly or via an undercoat film. When the object is an automobile body or a part, it is preferable to previously apply undercoating, intermediate coating, or the like by chemical conversion treatment, electrodeposition coating, or the like. The intermediate coating forms a coating film for hiding the base, imparting chipping resistance, and ensuring adhesion with the top coat.

In the method for forming a coating film of the present invention, first, the above-mentioned glittering coating composition is applied as a base coat layer on the above-mentioned substrate. In the case where the base material is a base coat coated with an undercoat, an intermediate coat, or the like, the base coat is coated on the base coat by a wet-on-wet (W / W) method or a wet-on-dry (W / D) method. The glitter coating composition can be applied. The W / W method is a method in which a base coat is applied, then dried by air drying or the like, and applied to an uncured or semi-cured base coat, whereas the W / D method is a base coat. This is a method in which a coating film is applied to a base coating film that has been baked and cured.

The method of applying the glitter coating composition on the substrate is not particularly limited, but a spray method, a roll coater method, or the like is preferable, and the coating can be performed a plurality of times. The dry film thickness of the base coat layer coated with the glitter coating composition is preferably 5 to 50 μm per coat,
10-30 micrometers is more preferable.

On the base coat layer thus formed, at least one clear coating film is formed as a top coat layer. When there are many glittering pigments in the base coat layer, the glossiness of the surface can be improved by applying two or more clear paints.

As the clear paint used in the coating film forming method of the present invention, those which are generally used for overcoating can be used. For example, acrylic resins, polyester resins, fluorine resins, epoxy resins, polyurethane resins, A mixture of at least one thermosetting resin selected from a polyether resin and a modified resin thereof and the above-described crosslinking agent can be used.
When a clear coating containing a carboxyl group-containing polymer and an epoxy group-containing polymer described in US Pat. No. 19315 is coated with a base coat when the difference in solubility between the base coating layer and the base coating layer is increased by acid rain resistance and the W / W method. It is preferably used from the viewpoint of not disturbing the orientation of the brightener in the layer. In addition, these clear paints, if necessary, a color pigment, as long as the transparency is not impaired,
Additives such as extenders, modifiers, ultraviolet absorbers, leveling agents, dispersants, defoamers and the like can be blended.

The application of the clear paint on the coating film of the present invention can be carried out after simultaneously curing the above-mentioned base coat layer and, if necessary, the layer formed from the intermediate paint. It is preferable to use the W / W method described above for the semi-cured base coat layer. In the case of applying the clear paint a plurality of times, the clear paint may be applied and baked at the same time after the final clear paint is applied. Thus, using the clear paint, W
/ W method together with the base coat layer and, if necessary,
It is baked at 60 ° C. for a predetermined time to obtain a coating film. The dry thickness of the top coat layer is preferably from 10 to 80 μm per coat, more preferably from 20 to 50 μm.

[0035]

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 mass part unless there is particular notice.

Examples 1 to 8 and Comparative Examples 1 to 3 Preparation of Substrates Dull steel sheet (length 300 mm, width 100 mm and thickness 0.8 mm) was 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, an intermediate coating (“Olga S-90 Sealer Gray”, manufactured by Nippon Paint Co., Ltd.) is applied by air spraying so that the dry film thickness becomes 40 μm, and baked at 140 ° C. for 30 minutes. An intermediate coating film was formed and used as a substrate.

Preparation of glittering paint composition Acrylic resin (styrene / methyl methacrylate / ethyl methacrylate / hydroxyethyl methacrylate /
Methacrylic acid copolymer, number average molecular weight about 20,000,
A hydroxyl value of 45, an acid value of 15, and a solid content of 50% by mass) and a melamine resin ("Uban 20SE", manufactured by Mitsui Chemicals, Inc., solid content of 60% by mass) are blended at a solid content mass ratio of 80:20 to obtain. Aluminum flake pigment ("Alpaste MH-8801", manufactured by Asahi Kasei Corporation) and metal oxide-coated alumina flake pigment ("SDA SILV"
ER WIII ”, manufactured by Merck, and metal oxide-coated glass flake pigment (“ EXTERIOR MEARL ”).
IN FIREMIST ”, Engelhard
And the color pigments were blended in the types and proportions shown in Table 1 if necessary. Next, an organic solvent (toluene /
Mass ratio of xylene / ethyl acetate / butyl acetate = 70/1
The mixture was stirred and mixed with a stirrer at 5/10/5) so as to obtain an appropriate coating viscosity, thereby preparing a glittering coating composition.

On the surface to be coated of the base material for forming the glitter coating film, the glitter coating composition obtained above was applied so that the dry film thickness became 15 μm. Coating is an electrostatic coating machine ("Auto REA", manufactured by ABB Industries)
And at an atomization pressure of 2.8 kg / cm ² . The atmosphere in the booth during coating was maintained at a temperature of 25 ° C. and a humidity of 75%.
After the coating, the coating was set for 3 minutes, the clear coating was applied to a dry film thickness of 35 μm, set at room temperature for 10 minutes, and baked at a temperature of 140 ° C. for 30 minutes. The concealing property and design property of the obtained coating film were evaluated by the following evaluation methods. Table 1 shows the results. The clear paint used was acrylic / melamine resin clear paint 1 (“Super Lac O-130 Clear”, manufactured by Nippon Paint Co., Ltd.) or
Clear coating material 2 containing a carboxyl group-containing polymer and an epoxy group-containing polymer ("Macflow O-52").
0 clear ", manufactured by Nippon Paint Co., Ltd.). Table 1 shows the evaluation results.

Evaluation method : Concealability: A black-and-white concealment paper was painted at different thicknesses and baked, and evaluated by a dry film thickness (μm) at which a black-and-white boundary could not be distinguished visually. Designability: The feeling of particles when the test plate was viewed obliquely (shade portion) was visually evaluated. 5: A deeper design is developed in which the particle feeling of the metal oxide-coated alumina flakes and the metal oxide-coated glass flake pigment is combined. 4: A deeper design is exhibited, in which the metal oxide-coated glass flake pigment has a particle feeling. 3: There is a feeling of particles of alumina flake coated with metal oxide,
A design with depth appears. 2 ... A design with graininess but not recognized as having depth appears. 1 ... A design with no graininess described above and cannot be said to have depth.

[0040]

[Table 1]

As is clear from the results shown in Table 1, in Examples 1 to 8, the coating films were formed by the coating film forming method using the glitter coating composition of the present invention. Is concealable, and alumina flakes and / or
Alternatively, it was possible to obtain a glittering coating film having a design with a glass flake particle feeling and a deep color tone. On the other hand, the comparative example did not include the aluminum flake pigment, which is an essential component of the present invention, so that no concealing property was obtained and the design did not exhibit the intended design.

[0042]

The glitter coating composition of the present invention comprises at least one of (1) an aluminum flake pigment and (2) a metal oxide-coated alumina flake pigment or a metal oxide-coated glass flake pigment in a specific ratio. By doing so, the hiding properties of the coating film can be obtained, and from the highlight and shade positions, the pigment of the above (2), which has a high chroma and high metallic luster of alumina and / or a strong luminance of glass flakes It is possible to obtain a brilliant coating film having a deep color tone which gives a sense and a new impression.

Since the coating film obtained by the present invention exhibits the above-mentioned design, it is preferably used in the fields requiring luster such as automobile outer panels, outer surfaces of containers such as motorcycles, coil coating, and the home appliance industry.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C09D 163/00 C09D 163/00 201/08 201/08 F term (Reference) 4D075 CB07 DC12 DC18 EA43 EB33 EC02 EC03 EC03 EC10 EC23 4J038 CD091 CD111 CD121 CG141 CH031 CH041 CH081 CH111 CH121 CH171 CJ031 CJ101 CJ131 DB061 DD041 DD121 DD181 DF001 DF021 DF041 DG111 DG121 DG131 DG191 DG271 DG281 GA06 GA07 HA066 HA216 HA12 PC12 PC03 PC08 PC08

Claims (6)

[Claims] (1) aluminum flake pigment, (2)
A metal oxide-coated alumina flake pigment and / or a metal oxide-coated glass flake pigment, and (3) a vehicle, wherein the (1) and (2) are replaced by (1) /
(2) A glittering coating composition containing 90/10 to 20/80 (mass ratio). 2. The ratio of (1) / (2) is 80 / 20-4.
The glitter coating composition according to claim 1, wherein the composition is 0/60 (mass ratio). 3. The method according to claim 1, wherein the metal oxide-coated alumina flake pigment and the metal oxide-coated glass flake pigment are 90 /
2. The composition according to claim 1, which is contained at a ratio of 10 to 50/50 (mass ratio).
Or the glittering coating composition according to 2. 4. A coating film forming method comprising forming a base coat layer on a substrate using the glitter coating composition according to claim 1 and then forming a top coat layer using a clear paint. . 5. The method according to claim 4, wherein said clear paint contains a carboxyl group-containing polymer and an epoxy group-containing polymer. 6. A coated article coated by the coating film forming method according to claim 4.