Composite pigment

Abstract

To provide a white composite pigment that exhibits excellent whiteness and little yellowness.SOLUTION: The composite pigment includes a flaky metal pigment and a granular white inorganic fluorescent pigment adhered to at least a part of the surface of the metal pigment.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates generally to composite pigments, and particularly to white composite pigments. [Background technology]

[0002] As a colored metallic pigment having a metallic appearance excellent in design, a colored pigment adhered to a metal pigment has been known. In the colored metallic pigment, the colored pigment adhered to the metal pigment has been an organic pigment such as a diketopyrrolopyrrole, quinacridone, dioxazine, isoindolinone, condensed azo, threne, perinone, perylene, phthalone, or phthalocyanine, or an inorganic pigment such as iron oxide or carbon black.

[0003] For example, WO2014 / 050893 (Patent Document 1) describes a colored metallic pigment that includes a metallic pigment, a colored pigment, a first compound having two or more carboxyl groups, and a second compound having one or more amino groups, and the colored pigment is attached to the surface of the metallic pigment in the coexistence of the first compound and the second compound.

[0004] Furthermore, JP 2014-189579 A (Patent Document 2) describes a base concealing paint containing a composite white pigment and a resin, the composite white pigment including a flake-shaped substrate made of metal or the like and a first white pigment such as titanium oxide that is in the form of particles attached to the surface of the substrate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. WO2014 / 050893 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-189579 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the composite pigments described in Patent Documents 1 and 2, when a white coloring pigment is used, as the whiteness increases, the yellowness also tends to increase.

[0007] Therefore, an object of the present invention is to provide a white composite pigment that has little yellowness and excellent whiteness. [Means for solving the problem]

[0008] The composite pigment according to the present invention comprises a flake-shaped metallic pigment and a particulate white inorganic fluorescent pigment attached to at least a portion of the surface of the metallic pigment.

[0009] By doing so, it is possible to provide a white composite pigment that has little yellowness and excellent whiteness. DETAILED DESCRIPTION OF THE INVENTION

[0010] The composite pigment of the present invention will be described in detail below with reference to specific examples. Note that the present invention is not limited to the following embodiments, and various modifications are possible within the scope of the technical concept of the present invention.

[0011] The composite pigment according to the present invention comprises a flake-shaped metallic pigment and a particulate white inorganic fluorescent pigment attached to at least a portion of the surface of the metallic pigment.

[0012] <Metallic pigments> The metallic pigment contained in the composite pigment of the present invention is composed of at least one of a metal and a substrate coated with a metal, and has a flake-like shape. The term "flake-like" is not particularly limited as long as the shape is recognized as flake-like.

[0013] The average thickness of the flake-shaped metal pigment is not particularly limited, but is preferably 0.02 μm or more, and more preferably 0.1 μm or more. The average thickness is preferably 5 μm or less, and more preferably 2 μm or less. A metal pigment having an average thickness of 0.02 μm or more is advantageous in terms of ease of manufacturing, while a metal pigment having an average thickness of 5 μm or less is advantageous in terms of the appearance of the coating composition, such as a coating film.

[0014] The average thickness is calculated based on the hiding power and density of the metallic pigment. For example, when aluminum flakes are used as the metallic pigment, the water surface diffusion area (WCA) can be determined according to JIS K 5906:1998 after washing a paste of aluminum flakes with hexane and pretreating the sample with a 5% stearic acid solution in mineral spirits (leafing treatment). From the obtained WCA value, the average thickness can be calculated using the following formula: Average thickness (μm) = 10 4 / [2.5(g / cm 3 )×WCA(cm 2 / g)]

[0015] Examples of metals for the metal pigment include aluminum, zinc, silver, copper, iron, nickel, and titanium, as well as alloys containing at least one of these metals.

[0016] In the case of metal pigments, the substrate to be coated with the metal may be, for example, an inorganic compound such as glass, mica, alumina, or titania.

[0017] The average particle size of the metal pigment is preferably 1 μm or more, and more preferably 5 μm or more. Furthermore, this average particle size is preferably 100 μm or less, more preferably 50 μm or less, and even more preferably 20 μm or less. When the average particle size is 1 μm or more, it is easy to handle during the manufacturing process and generally tends to be less prone to aggregation. When the average particle size is 100 μm or less, it is possible to prevent the coating surface from becoming rough when used as a coating material.

[0018] The average particle size of the metal pigment can be measured as the volume-average median diameter by dispersing a sample in an alcohol solvent and using a laser diffraction particle size distribution analyzer such as the MT3300EXII manufactured by Microtrac.

[0019] The surface of the metal pigment may be previously treated with an inorganic or organic compound as appropriate to impart functions such as water resistance, chemical resistance, weather resistance, etc. In particular, when using a metal pigment made of aluminum, it may be preferable to perform such treatment, since aluminum easily reacts with water, acid, and alkali.

[0020] <White inorganic fluorescent pigment> In the present invention, "white" means the color that a person perceives as "white" when various colors of visible light are diffusely reflected or emitted from the surface of the object. Whiteness in the present invention is expressed as a colorimetric value, L* value.

[0021] The white inorganic fluorescent pigment used in the composite pigment of the present invention has a particulate shape. "Having a particulate shape" means that it is different from, for example, a coating found in conventional pearlescent pigments, which covers the surface of a metal pigment in a continuous layer. As long as this meaning is maintained, the particle shape is not limited to a specific shape. In the composite pigment of the present invention, the inorganic fluorescent pigment adheres to the surface of the metal pigment in a particulate state. Because inorganic fluorescent pigments are inorganic, they have better weather resistance than those using organic fluorescent pigments, and can be used in applications requiring high weather resistance, such as automotive exteriors.

[0022] White inorganic fluorescent pigments include (Sr,Ca)5(PO4)3Cl:Eu and BaMgAl 10 O 17 :Eu, BaMg2Al 16 O 27Preferably, the fluorescent pigment of the present invention is one or more selected from the group consisting of ZnO:Zn, Y2O2S:Eu, Zn2SiO4:Mn, and Y(P,V,B)O4:Eu. In other words, the fluorescent pigment of the present invention can be attached to the surface of a metal pigment either alone or in combination of two or more.

[0023] The average particle size of the white inorganic fluorescent pigment is not particularly limited, but is preferably 0.01 to 2 μm, and more preferably 0.01 to 1 μm. If the particle size is 0.01 μm or more, there is little risk that the fluorescent pigment will be difficult to disperse, and if the particle size is 2 μm or less, there is little risk that it will be difficult to adhere the fluorescent pigment uniformly to the metal pigment surface. The average particle size of the inorganic fluorescent pigment can be measured in the same way as for the metal pigment.

[0024] <Adsorbent> To improve adhesion of the inorganic fluorescent pigment to the metallic pigment, the inorganic fluorescent pigment may be attached to at least a portion of the surface of the metallic pigment in the presence of an adsorbent, such as an aminosilane coupling agent, a polycarboxylic acid, a polyamine, or a mixture thereof.

[0025] <Protective material> The composite pigment according to the present invention can have a protective material attached to at least a portion of its surface, which can further improve the adhesion of the inorganic fluorescent pigment to the metal pigment. It is more preferable that the protective material coats the entire surface of the composite pigment.

[0026] Suitable protective materials include resins obtained by radical polymerization of monomers and / or oligomers having at least one polymerizable double bond, as well as oxides or hydroxides of at least one element selected from the group consisting of Al, Si, Ti, Cr, Zr, Mo, and Ce.

[0027] The protective material is preferably attached in the form of a layer so as to cover the entire surface of the composite pigment. When the protective material is attached in the form of a layer, only one layer may be provided, or multiple layers may be provided. For example, a layer of a resin protective material may be further coated on top of a layer of an inorganic protective material, so that the outermost layer is a resin layer. If the outermost layer is a resin layer, when a coating film is formed using a coating composition containing the composite pigment of the present invention and a paint resin, the adhesion between the composite pigment and the paint resin is improved, resulting in good paint film properties. Furthermore, the formation of a resin layer improves the chemical resistance of the coating film.

[0028] <Coloring agent> The inorganic fluorescent pigment may be used in combination with a color pigment other than the inorganic fluorescent pigment, such as titanium oxide, within the scope of not impairing the effects of the present invention. When the inorganic fluorescent pigment is used in combination with the other color pigment, for example, the inorganic fluorescent pigment and the other color pigment are adhered together to at least a part of the surface of the metal pigment.

[0029] <Manufacturing method> The composite pigment of the present invention may be produced by any method as long as it has the above-described structure.

[0030] The composite pigment of the present invention can be produced, for example, by mixing a metallic pigment and a white inorganic fluorescent pigment. In this case, the metallic pigment and the inorganic fluorescent pigment may be mixed in any order, and the order of mixing is not particularly limited. For example, all components may be added at once and mixed, or each component may be added in order and mixed. The fluorescent inorganic pigment may be added as is, or may be dispersed in advance using a disperser or the like before being added.

[0031] When mixing the components, it is preferable to use a solvent to disperse or dissolve the components. As a mixing method, the components may be mixed in a slurry state using a stirrer or the like, or in a paste state using a kneader mixer or the like.

[0032] <Protective material application process> The method for attaching the protective material is not particularly limited, and known methods can be used. When using a resin as the protective material, for example, a method is used in which a metal pigment adsorbed with an inorganic fluorescent pigment is subjected to solid-liquid separation, washed and filtered with a nonpolar solvent as necessary, and then dispersed in a nonpolar solvent. A polymerizable monomer and a polymerization initiator are added, and the mixture is heated with stirring to polymerize the monomer. The polymerization reaction is preferably carried out in an inert gas such as nitrogen or argon. In an oxygen-containing atmosphere, radicals contributing to the polymerization reaction tend to disappear easily, resulting in a decrease in the polymerization efficiency of the monomer. The reaction temperature is preferably 50 to 150°C, more preferably 70 to 100°C. A reaction temperature of 50°C or higher provides good polymerization efficiency, while a reaction temperature of 150°C or lower prevents excessive evaporation of the solvent, making it preferable in terms of the working environment and safety.

[0033] When using an oxide or hydroxide as a protective material, for example, a metal pigment adsorbed with an inorganic fluorescent pigment can be subjected to solid-liquid separation, washed and filtered with a nonpolar solvent as needed, and then dispersed in a solvent. The surface of the metal pigment adsorbed with the inorganic fluorescent pigment can be coated with an oxide or hydroxide using a sol-gel process. In this case, the solvent is not particularly specified, but any solvent that does not interfere with the precipitation of the metal oxide by the sol-gel process can be used. Examples include alcohol-based, glycol ether-based, and hydrocarbon-based solvents. The resulting slurry is then added with a metal compound serving as the raw material for the metal oxide and water, followed by hydrolysis using an acid or base as a catalyst to precipitate the metal oxide. Known hydrolyzable metal compounds can be used as raw materials for metal oxides, without any particular restrictions. Examples of such metal compounds include alkoxides, chlorides, carboxylates, and acetylacetonate complexes of Al, Si, Ti, Cr, Zr, Mo, and Ce. Specific examples of metal compounds include tetraethoxysilane (TEOS). As the catalyst, any known acid or base can be used without particular limitation. Examples of acids include inorganic acids such as sulfuric acid, hydrochloric acid, nitric acid, and phosphoric acid, and organic acids such as formic acid, acetic acid, propionic acid, oxalic acid, lactic acid, succinic acid, and citric acid. Examples of bases include inorganic hydroxides such as sodium hydroxide and potassium hydroxide, ammonia water, and organic amine compounds such as methylamine, ethylamine, diethylamine, triethylamine, monoethanolamine, diethanolamine, triethanolamine, dimethylethanolamine, and morpholine. The reaction temperature is generally 20 to 90°C, and is preferably controlled in the range of 30 to 80°C. If the reaction temperature is below 20°C, the treatment time tends to be long. On the other hand, if the reaction temperature exceeds 90°C, it becomes difficult to control the reaction, and the desired composite particles may not be obtained.

[0034] <Resin composition> The composite pigment of the present invention can be suitably used in resin compositions such as paints. A resin composition for paints needs to contain at least the composite pigment and a paint resin, and may also contain solvents and additives as necessary. Known paint resins can be used without particular limitations. Examples include acrylic resins, melamine resins, epoxy resins, alkyd resins, urethane resins, silicone resins, and fluororesins. The resin composition according to the present invention may contain other coloring pigments in addition to the composite pigment of the present invention.

[0035] The solvent for the paint can be any known solvent without any particular limitation, and can be selected appropriately depending on the application and paint resin. Examples of such solvents include water, hydrophilic solvents such as alcohols, glycols, ketones, and esters (e.g., methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, t-butyl alcohol, n-butyl alcohol, isobutyl alcohol, ethyl cellosolve, butyl cellosolve, butyl carbitol, propylene glycol monobutyl ether, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, propylene glycol monopropyl ether, acetone, ethyl acetate, and propyl acetate), and oil-based solvents such as aromatic, alicyclic, and hydrocarbon solvents (e.g., benzene, toluene, xylene, hexane, heptane, cyclohexane, octane, and mineral spirits).

[0036] The other color pigments added to the paint in addition to the composite pigment of the present invention may be the same as the inorganic fluorescent pigment used in the composite pigment of the present invention, or may be different pigments, such as non-fluorescent (white) pigments such as titanium oxide, zinc oxide, and barium sulfate.

[0037] Other components added to the coating material are not particularly limited, and known substances can be used, such as curing agents, dispersants, leveling agents, antifoaming agents, preservatives, and thixotropic agents.

[0038] The present invention can be summarized as follows.

[0039] (1) A composite pigment comprising a flake-shaped metallic pigment and a particulate white inorganic fluorescent pigment attached to at least a portion of the surface of the metallic pigment.

[0040] (2) The inorganic fluorescent pigment is a composite pigment according to (1) above, which comprises a host crystal formed of at least one selected from phosphates, silicates, aluminates, tungstates, metal oxides and metal sulfides, and at least one element selected from In, Tl, Sn, Pb, Sb, Bi, Cr, Mn, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Ce introduced into the host crystal.

[0041] (3) The composite pigment according to (1) above, wherein the inorganic fluorescent pigment is attached to at least a portion of the surface of the metal pigment in the presence of an adsorbent, and the adsorbent includes at least one selected from the group consisting of an aminosilane coupling agent, a polycarboxylic acid, and a polyamine.

[0042] (4) A composite pigment according to (1) above, comprising a protective material covering at least a portion of the surface, the protective material comprising a resin obtained by radical polymerization of a monomer and / or oligomer having at least one polymerizable double bond.

[0043] (5) A composite pigment according to (1) above, comprising a protective material covering at least a portion of the surface, the protective material comprising an oxide and / or hydroxide of at least one element selected from the group consisting of Al, Si, Ti, Cr, Zr, Mo, and Ce.

[0044] (6) The composite pigment according to (1) above, which comprises a color pigment adhered to the surface of the metal pigment.

[0045] (7) A pigment mixture comprising the composite pigment according to any one of (1) to (5) above and a color pigment.

[0046] (8) A resin composition containing the composite pigment according to any one of (1) to (6) above.

[0047] (9) A resin composition containing the pigment mixture described in (7) above. [Example]

[0048] The composite pigment according to the present invention will be described in more detail below by showing specific production examples and test results.

[0049] Example 1 <Manufacturing of composite pigments> A three-neck flask was charged with 300 mL of mineral spirits, and 150.0 g of flake aluminum particles (trade name: "Alpaste CS460," 70% metal content, 16 μm average particle diameter, manufactured by Toyo Aluminum Co., Ltd.) as the metallic pigment and 20.0 g of polymerized carboxylic acid (trade name: "Diacid 1550," manufactured by Harima Chemical Co., Ltd.) obtained by thermally polymerizing acrylic acid and soybean oil fatty acid as the polycarboxylic acid were added. After heating and stirring, the mixture was cooled to room temperature and filtered, thereby carrying out a degreasing process. This yielded a metallic pigment degreased with polycarboxylic acid.

[0050] Next, 400 mL of mineral spirits was used as a solvent, and BaMgAl was used as a white inorganic fluorescent pigment. 10 O 17 70.0 g of Eu (average particle diameter 2 μm), 200.0 g of the flaky substrate degreased as above, 20.0 g of the same polycarboxylic acid as above as the adsorbent, and 20.0 g of an alicyclic polyamine (trade name: "ADK STAB LA-67", manufactured by ADEKA Corporation) as the polyamine were placed in a kneader and stirred at 0 to 150°C for 1 minute to 1 hour to obtain a slurry containing composite particles in which the inorganic fluorescent pigment adhered to the surface of the metal pigment in the presence of the polycarboxylic acid and the polyamine.

[0051] 640 g of the slurry containing the composite particles obtained above was placed in a three-neck flask containing 1000 mL of mineral spirits, and 1.0 g of acrylic acid was added and stirred while blowing in nitrogen. Next, 30.0 g of trimethylolpropane trimethacrylate and 10.0 g of azobisisobutyronitrile dissolved in 150 mL of mineral spirits were added, heated (50-150°C) and stirred (30 minutes to 8 hours), cooled to room temperature, and filtered to obtain a composite pigment with a protective resin layer formed on the surface.

[0052] <Example 2> A composite pigment was obtained in the same manner as in Example 1, except that 20.0 g of ethylenediamine was used as the polyvalent amine of the adsorbent.

[0053] Example 3 A composite pigment was obtained in the same manner as in Example 1, except that 20.0 g of triethanolamine was used as the polyvalent amine of the adsorbent.

[0054] Example 4 A composite pigment was obtained in the same manner as in Example 1, except that Y2O2S:Eu (average particle size: 2 μm) was used as the white inorganic fluorescent pigment.

[0055] <Example 5> BaMgAl as a white inorganic fluorescent pigment 10 O 17 A composite pigment was obtained in the same manner as in Example 1, except that :Eu (average particle size: 0.6 μm) was used.

[0056] Example 6 The composite pigment of Example 1 (solid content 100 g, metal content 62.0 g) was dispersed in 1000 mL of isopropyl alcohol (IPA) in a three-neck flask to prepare a slurry, and the temperature of the slurry was raised to 50° C. After the temperature was raised, 30 g of water was added to the slurry, and an appropriate amount of monoethanolamine was added to adjust the pH of the slurry to 8.5.

[0057] Next, 35.4 g of tetraethoxysilane (hereinafter abbreviated as "TEOS") (solid content after reaction: 9.9 g, 16.0 mass % (as solid content) of the metal content) was gradually added to the slurry as a protective material (metal oxide raw material), and the mixture was stirred and mixed at 70°C for 6 hours to promote the reaction of precipitating TEOS as silica on the surface of the composite pigment of Example 1. During this time, the pH value of the slurry was checked every 2 hours, and the pH of the slurry was adjusted to 8.5 by adding an appropriate amount of monoethanolamine. After the reaction was completed, the slurry was cooled to room temperature and filtered to obtain the composite pigment of Example 6, which further had a protective layer containing silica (metal oxide).

[0058] Example 7 The composite pigment of Example 7 was obtained in the same manner as in Example 1, except that no protective layer was provided.

[0059] Example 8 A composite pigment was obtained in the same manner as in Example 1, except that 14 g of BaMgAl10O17:Eu (average particle size 2 μm) was used as a white inorganic fluorescent pigment, and 56 g of TiO2 (trade name: TTO-55D, average particle size 0.05 μm, manufactured by Ishihara Sangyo Kaisha, Ltd.) was used in combination.

[0060] <Comparative Example 1> A composite pigment of the present invention having a protective layer formed thereon was obtained in the same manner as in Example 1, except that the white inorganic fluorescent pigment was replaced with a white pigment, TiO2 (product name: CR-90-2, average particle size 0.25 μm, manufactured by Ishihara Sangyo Kaisha, Ltd.).

[0061] <Comparative Example 2> A composite pigment of the present invention having a protective layer formed thereon was obtained in the same manner as in Example 1, except that the white inorganic fluorescent pigment was replaced with a white pigment, TiO2 (trade name: TTO-55D, average particle size 0.05 μm, manufactured by Ishihara Sangyo Kaisha, Ltd.).

[0062] <Test Example 1> 10 g of each composite pigment was weighed out as solids into a polypropylene (PP) cup, and 20 g of thinner (manufactured by Nippon Paint Co., Ltd., product name: nax Admira 500 Standard Thinner) was added and stirred well with a spatula. 110 g of clear coat (manufactured by Nippon Paint Co., Ltd., nax Admira 280 Correction Clear) was added and stirred at 500 rpm with a mixer for 5 minutes. 110 g of the aforementioned thinner and 10 g of nax Multi (10:1) #20 Hardener were added and stirred well to prepare the test paint.

[0063] Next, the above test paint was applied to one surface of a steel plate (steel plate having, in this order, a substrate (iron), an electroplated layer (zinc-treated layer), a steel plate (chip-resistant) layer, a base coat layer (for hiding the base and decorating), and a top coat layer (protective layer for the base coat)) that had been given an intermediate coating, using a spray gun (manufactured by Anest Iwata, product name: W-101-134G) to give a dry film thickness of 13 to 15 μm, and the plate was dried at 80°C for 20 minutes.

[0064] After drying, the L* (lightness) and b* (yellowness) values ​​of the coated surface of the steel plate were measured using a multi-angle spectrophotometer (BYK, BYK-mac i). The measurement results (values ​​at a detection angle of 15°, close to the highlight, were used as representative values) are shown in Table 1.

[0065] [Table 1]

[0066] As shown in Table 1, the composite pigments of Examples 1 to 7, which contain only a white inorganic fluorescent pigment as the pigment, have higher L* values ​​and lower b* values ​​than Comparative Examples 1 and 2, and are characterized by a stronger whiteness and less yellowness.

[0067] Furthermore, the composite pigment of Example 8, which contains a white inorganic fluorescent pigment as well as another white pigment, was able to enhance the whiteness and reduce the yellowness compared to Comparative Example 2, which contains the same white pigment.

[0068] <Test Example 2> An accelerated weather resistance test was carried out under the following conditions using the composite pigments of Examples 1 and 5. The operating cycle consisted of alternating 18 minutes of the "irradiation + rain" mode and 102 minutes of the "irradiation" mode in Table 2, for a total of 2,100 hours.

[0069] [Table 2]

[0070] The test piece was attached to the xenon tester specified in each paint regulation and operated for the specified time, then removed and left at a temperature of 23±2°C for at least one hour. The painted surface was then inspected for stains, chalking, blocking, blisters, cracks, peeling, etc., and the 60° specular gloss and color difference (ΔE*) were measured.

[0071] When tested for 2100 hours at an illuminance of 100W, the cumulative illuminance is 750MJ / m 2 The test pieces of Examples 1 and 5 all had a color difference ΔE* of 0 after 2100 hours, a 60° gloss of 75 or more, and were free of cracks and peeling, demonstrating good weather resistance.

[0072] The embodiments and examples disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

Claims

1. a flake-shaped metallic pigment; a particulate white inorganic fluorescent pigment attached to at least a portion of the surface of the metallic pigment.

2. The inorganic fluorescent pigment is a host crystal formed of at least one selected from the group consisting of phosphates, silicates, aluminates, tungstates, metal oxides, and metal sulfides; 2. The composite pigment according to claim 1, further comprising at least one element selected from In, Tl, Sn, Pb, Sb, Bi, Cr, Mn, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Ce introduced into the host crystal.

3. the inorganic fluorescent pigment is attached to at least a portion of the surface of the metallic pigment in the presence of an adsorbent; The composite pigment according to claim 1 , wherein the adsorbent comprises at least one selected from the group consisting of an aminosilane coupling agent, a polycarboxylic acid, and a polyamine.

4. a protective material covering at least a portion of the surface; The composite pigment according to claim 1 , wherein the protective material comprises a resin obtained by radical polymerization of a monomer and / or an oligomer having at least one polymerizable double bond.

5. a protective material covering at least a portion of the surface; 2. The composite pigment according to claim 1, wherein the protective material comprises an oxide and / or hydroxide of at least one element selected from the group consisting of Al, Si, Ti, Cr, Zr, Mo, and Ce.

6. The composite pigment of claim 1 , comprising a color pigment adhered to the surface of the metallic pigment.

7. The composite pigment according to any one of claims 1 to 5, and a color pigment.

8. A resin composition comprising the composite pigment according to any one of claims 1 to 6.

9. A resin composition comprising the pigment mixture of claim 7.

Images