JP2006176741A - Colored brilliant pigment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colored brilliant pigment to be compounded into coatings, resin compositions, inks, cosmetics or the like, which exhibits a high transparent feeling and a high brilliant feeling and gives a color having high saturation and being clear. <P>SOLUTION: The colored brilliant pigment comprises a scaly glass and, coated on the surface thereof, a silica-based film containing an inorganic pigment. Preferably, a coating layer is formed on the surface of the scaly glass and further the silica-based film is coated thereon. The brilliant pigment is compounded into coatings, resin compositions, inks, cosmetics or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a colored glitter pigment having a sense of transparency and glitter, and further relates to a colored glitter pigment having an interference color. In addition, the present invention relates to a paint, a resin composition, an ink, and a cosmetic using the glitter pigment.

  As bright pigments, scaly aluminum powder, graphite flake particles, flake glass, flake glass coated with silver, mica flake particles coated with a metal oxide such as titanium dioxide or iron oxide have been known. Yes.

  These glitter pigments have a characteristic that their surfaces reflect light and shine brightly, and are used by being mixed with paints, inks, resin compositions, cosmetics, and the like. These glitter pigments are used in paints, on the painted surface, in inks on the printed surface, and when used in resin compositions, on the surface of resin moldings. Give a unique look.

  On the other hand, as a luster pigment having a metallic luster, there are known aluminum powders, those obtained by pulverizing a metal coated foil-like resin, or those obtained by metal coating mica powder. Since these luster pigments have a metallic luster, they can give a strong luster and can give an excellent appearance in design.

  Therefore, glitter pigments are used in a wide range of applications, such as paints used for coating automobiles, motorcycles, OA equipment, mobile phones, home appliances, etc., mixed with inks and cosmetics such as various printed materials or writing utensils. It is used in.

  Among them, the scaly substrate coated with a metal oxide such as titanium dioxide or iron oxide exhibits various interference colors depending on the thickness of the coating layer on the surface (see, for example, JP-A-10-101957). However, color development due to interference differs from color development due to light absorption in organic pigments and the like, and it has been difficult to produce a clear color tone.

  Japanese Patent Application Laid-Open No. 7-133211 proposes a colored cosmetic pigment in which a surface of an inorganic base material having a smooth surface is coated with a metal oxide gel containing a dye. Japanese Patent Application Laid-Open No. 2001-152049 also proposes a color pigment coated with a metal oxide gel using an inorganic pigment.

  On the other hand, the metal powder or the metal-coated powder can give a high brightness, but cannot obtain various design properties because it is an achromatic color that is unique to the metal. Therefore, in order to obtain a chromatic color, a color pigment has been mixed with metal powder or metal-coated powder. However, there is a problem that the color of the achromatic metal powder or the powder coated with the metal is emphasized and it is difficult to obtain a clear color tone.

  Therefore, Japanese Patent Publication No. 6-92546 proposes a method of coloring each aluminum flake by attaching a pigment or the like by a resin coating method or the like.

Japanese Patent Laid-Open No. 10-101957 JP-A-7-133211 Japanese Patent Laid-Open No. 2001-152049 Japanese Patent Publication No. 6-92546

  In the above-mentioned technology disclosed in Japanese Patent Application Laid-Open No. 7-133211, since it is a cosmetic pigment, it is mica as an inorganic substrate that is actually used. Since the appearance color of this mica is often close to white, even if it is coated with a metal oxide gel containing a pigment, a clear color tone cannot be obtained.

  Furthermore, in the technique disclosed in Japanese Patent Laid-Open No. 7-133211, it is difficult to attach a sufficient amount of pigment, so that a clear color tone cannot be obtained. In addition, even if the adhesion amount of the pigment can be increased, there are problems such that the pigment is easily removed and the process is complicated.

  Therefore, an object of the present invention is to provide a glittering pigment that has high transparency and glitter, and has a high chroma and a clear color. Furthermore, it aims at provision of the coating material, resin composition, ink, and cosmetics using this luster pigment.

The present invention, as claimed in claim 1,
It is a colored glitter pigment characterized in that the surface of the glass flake is coated with a silica-based film containing an inorganic pigment.

As invention of Claim 2,
The colored glitter pigment according to claim 1, wherein a surface of the glass flake is covered with a coating layer, and the silica-based film is further coated.

As invention of Claim 3,
The colored glitter pigment according to claim 2, wherein the coating layer is formed of a metal oxide.

As invention of Claim 4,
The colored glitter pigment according to claim 3, wherein the metal oxide is at least one metal oxide selected from the group consisting of titanium oxide, iron oxide, and zirconium oxide.

As invention of Claim 5,
The colored glitter pigment according to claim 2, wherein the coating layer is made of metal.

As invention of Claim 6,
The colored glitter pigment according to claim 5, wherein the metal is at least one metal selected from the group consisting of gold, silver, platinum, palladium, titanium, cobalt, and nickel, and / or an alloy thereof. .

As invention of Claim 7,
The colored glitter pigment according to any one of claims 1 to 6, wherein the silica-based film is substantially composed only of silica.

As invention of Claim 8,
8. The colored glitter pigment according to claim 1, wherein the inorganic pigment has an average particle diameter of 10 nm to 1 μm.

  Furthermore, when the glitter pigment according to the present invention is included in paints, resin compositions, inks, cosmetics, etc., the glitter can be made excellent.

  The colored glitter pigment of the present invention coats a silica-based film containing an inorganic pigment on scaly glass. Unlike mica, scale-like glass is transparent and has a smooth surface. Therefore, a pigment based on this has high transparency and glitter. In addition, since the coloring of the glitter pigment of the present invention is basically based on an inorganic pigment without depending on an interference color, a vivid color with high saturation can be obtained.

  Then, by applying this colored glitter pigment to a paint or a resin composition, it is possible to realize a deep hue that has not been achieved in the past. For example, a surface constituting a curved surface or the like is often observed from a small angle with respect to the surface. Even in such a case, a paint or a resin composition to which the glitter pigment according to the present invention is applied is preferable because the clear color tone is not impaired.

  Furthermore, when a glass substrate coated with titanium oxide, which is a metal oxide, is used as the substrate, it is possible to obtain glitter pigments having different colors of the glass flakes exhibiting interference colors and the inorganic pigment. In this case, a so-called flip-flop whose color tone varies depending on the viewing angle can be realized, and articles having various colors can be provided.

  The colored glitter pigment according to the present invention can be applied to various fields such as paints, resin compositions, ink compositions, cosmetics, artificial marble molded products, and coated papers. In particular, when an inorganic pigment is used, the weather resistance is improved and its application range is greatly expanded.

  The colored glitter pigment of the present invention is characterized in that a scaly glass is coated with a silica-based film containing an inorganic pigment.

(Base material)
As the base material in the present invention, scaly glass having high surface smoothness and high transparency is used. Furthermore, when the scale-like glass is coated with a metal, it exhibits a metallic luster and can be preferably used. Further, when the scale-like glass is coated with a metal oxide, it exhibits an interference color and can be preferably used.

  The scaly glass used in the present invention may be manufactured by a blow method. The blow method is to melt the raw glass cullet, continuously take out the molten glass from the circular slit, and blow a gas such as air from the blow nozzle provided inside the circular slit to inflate the molten glass. However, it is a method of obtaining a scaly glass by pulling it into a balloon shape and crushing the thin glass.

  The surface of the glass flake produced in this way maintains the smoothness of the fired surface during melt molding. For this reason, since it has a smooth surface, it reflects light well. It is preferable to add this scaly glass to a paint, a resin composition or the like because a high glitter feeling can be obtained. As such flaky glass, for example, from Nippon Sheet Glass Co., Ltd., Microglass (registered trademark) R glass flake (registered trademark) R series (RCF-160, REF-160, RCF-015, REF-015) Is commercially available.

  Furthermore, you may form a coating layer on the surface of this glass flake. As this coating layer, for example, a metal oxide layer or a metal layer may be formed.

  The method for coating the glassy glass with the metal oxide used in the present invention is not particularly limited, and for example, a known method such as a sputtering method, a sol-gel method, a CVD method, or an LPD method can be used. Note that, when a metal substrate is coated on a particulate base material such as glass flakes, the LPD method in which an oxide is precipitated on the surface from a metal salt is preferable. Further, a metal oxide having a high refractive index is preferable for exhibiting an interference color. In particular, a precipitation method using a neutralization reaction that can directly deposit rutile-type titanium dioxide on the surface of a glass flake is optimal. Specifically, the present inventor has proposed in Japanese Patent Application Laid-Open No. 2001-31421, and is a method of precipitating rutile crystals from a titanium-containing solution having a temperature of 55 to 85 ° C. and a pH of 1.3 or less by a neutralization reaction.

  For example, Nippon Shoku Glass Co., Ltd. provides Metashine (registered trademark) RRC series (MC5090RS, MC5090RY, MC5090RR, MC5090RB, MC5090RG, MC1080RS) , MC1080RY, MC1080RR, MC1080RB, MC1080RG, MC1040RS, MC1040RY, MC1040RR, MC1040RB, MC1040RG, MC1020RS, MC1020RY, MC1020RR, MC1020RB, MC1020RG, MC5090FG, MC5090FR, MC5090FB, MC5090FC) are commercially available.

  Further, the glass-coated glass has a glittering feeling, for example, from Nippon Sheet Glass Co., Ltd., Metashine (registered trademark) RPS series (MC5480PS, MC5230PS, MC5150PS, MC5090PS, MC5030PS, MC2080PS, ME2040PS , ME2025PS, MC5480NS, MC5230NS, MC5150NS, MC5090NS, MC5030NS, MC5480NB, MC5230NB, MC5150NB, MC5090NB, MC5030NB, MC1040NB, MC1020NB) are commercially available.

  The average particle diameter and average thickness of the glass flakes vary depending on the intended use and are not particularly limited. In general, it is preferable that the average particle diameter is 1 to 500 μm and the average thickness is 0.1 to 10 μm. When the particle size is too large, the scaly glass is crushed when the glitter pigment is blended with a paint or a resin composition. In particular, in the glass flakes coated with titanium oxide, the cross section is exposed, so that the contained alkali component diffuses.

  On the other hand, if the particle size is too small, the plane of the glitter pigment in the coating film or the resin composition faces a random direction, and the reflected light emitted by the individual particles becomes weak. For this reason, a glittering feeling will be impaired.

  When used in ink, a glitter pigment having a small particle diameter is preferable, and the average particle diameter of the glass flakes is preferably 1 to 40 μm and the average thickness is preferably 0.1 to 3 μm.

(Inorganic pigment)
Although the magnitude | size of the inorganic pigment used is not restrict | limited in particular, It is preferable that an average particle diameter is 10 nm-1 micrometer. When the average particle size is less than 10 nm, the durability of the inorganic pigment is extremely deteriorated. On the other hand, when the average particle diameter exceeds 1 μm, the masking by the inorganic pigment becomes large and the glittering feeling is lost. Therefore, when the hue is lowered or the coating film is thin, the surface smoothness of the coating film is impaired.

  The content of the inorganic pigment is preferably 30% by mass or less, more preferably less than 10% by mass, and most preferably 0.1 to 3.0% by mass with respect to the mass of the glass flakes serving as the base material. is there.

Although it does not specifically limit as a kind of inorganic pigment, For example, the pigments listed below are used preferably. The pigment name is represented by Color Index Generic Name (hereinafter abbreviated as CIGN.).
That is, petal (CIGN. Pigment: R-101), iron black (CIGN. Pigment: BK-11), titanium yellow (CIGN. Pigment: Y-157, Y-53, BR-24), zinc-iron brown (CIGN. Pigment: Y-119, BR-33), Titanium cobalt green (CIGN. Pigment: G-50), Cobalt green (CIGN. Pigment: G-26), Cobalt blue (CIGN. Pigment: B-28) , Copper-iron black (CIGN. Pigment: BK-26), zinc sulfide (CIGN. Pigment: W-7), barium sulfate (CIGN. Pigment: W-21), ultramarine (CIGN. Pigment: B-29) , Calcium carbonate (CIGN. Pigment: W-18), cobalt violet (CIGN. Pigment: V-14), yellow iron oxide (CIGN. Pigment: Y-42, Y-43), carbon black (CIGN. Pigment: BK) -7), Ferrocyan (CIGN. Pigment: B-27), etc.

  Further, when the scaly glass is coated with a metal oxide and exhibits an interference color, the combination of the interference color of the scaly glass and the color of the inorganic pigment is not particularly limited. Note that it is preferable to approximate the interference color to the color of the inorganic pigment because the depth of the color can be increased.

  When applied to a coating film without coating a silica-based film containing an inorganic pigment on a glass flake that exhibits interference color, the interference color is slightly different, especially when observed from a small angle with respect to the coating film surface. Visible and further cloudy due to scattering is observed.

  Therefore, as in the present invention, when a silica-based film containing an inorganic pigment is coated on a glass flake exhibiting an interference color, and this is applied to a coating film, it is observed from a small angle with respect to the coating film surface. However, no different interference colors are observed, and no cloudiness is observed. This coating film has a stable color tone from any angle and can achieve a deeper hue.

  Also, by making the interference color different from the color of the inorganic pigment, a so-called flip-flop can be realized in which the color tone varies depending on the viewing angle. In the flip-flop in the bright pigment using only the interference color, the color tone changes in the order of the light wavelength, but in the flip-flop in which the interference color and the color of the inorganic pigment are different, a free color change can be realized. For example, blue and yellow, red and green.

(Silica film)
The inorganic pigment is contained in the silica-based film and is covered with the scaly glass. The silica-based film is suitable because it can be easily coated on the surface of the glass-like glass flakes, for example, by a sol-gel method. The silica-based film can also be preferably used as a matrix in which a pigment is dispersedly contained.

  The silica-based film only needs to contain silica as a main component, and may consist essentially of silica. Components other than silica may contain titania, zirconia, etc. in order to adjust the refractive index of the film and to provide alkali resistance.

  The silica-based film only needs to contain silica as a main component, and may consist essentially of silica. Components other than silica may contain titania, zirconia, etc. in order to adjust the refractive index of the film and to provide alkali resistance.

The silica-based film containing the inorganic pigment preferably has a thickness of 50 nm to 1 μm. If the thickness is less than 50 nm, the pigment cannot be sufficiently contained, and the color tone becomes thin, or the contained inorganic pigment tends to fall off.
On the other hand, when the thickness exceeds 1 μm, the color tone becomes dark and the glitter feeling is lost, or the inorganic pigment-containing layer is easily peeled off. In addition, the cost increases.

  A method for forming a silica-based film containing an inorganic pigment is obtained by dispersing glass flakes in a coating solution containing silicon containing an organometallic compound that can be hydrolyzed and polycondensed and an inorganic pigment, thereby hydrolyzing the organometallic compound. Decomposition / condensation polymerization is recommended. Thus, the silica-based film containing an inorganic pigment can be coated on the surface of the glass flake. Examples of the organometallic compound other than the organometallic compound containing silicon include an organotitanium compound, an organozirconium compound, and an organoaluminum compound. When the organometallic compound is only an organosilicon compound, a silica film can be obtained.

  Examples of the organosilicon compounds that can be hydrolyzed and polycondensed in the coating solution include tetraalkoxysilanes such as tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, and tetrabutoxysilane, methyltrimethoxysilane, methyltriethoxysilane, Mention may be made of methyltrialkoxysilanes such as methyltripropoxysilane and methyltributoxysilane.

  Among these, those having a relatively small molecular weight, for example, tetraalkoxysilane composed of an alkoxyl group having 3 or less carbon atoms tend to be a dense film, and thus are preferably used. Further, polymers of these tetraalkoxysilanes having an average degree of polymerization of 5 or less are also preferably used.

  The coating solution contains 0.5 to 20% by mass of an organosilicon compound and 0.1 to 5% by mass of an inorganic pigment. In addition, the coating solution contains water for hydrolysis. For example, when the silicon alkoxide is 1, the mixing ratio (molar ratio) of silicon alkoxide, which is an organic silicon compound, and water is preferably 25 to 100. By changing the content ratio of the organosilicon compound and the inorganic pigment, the ratio of silica to the inorganic pigment in the film can be finally adjusted.

  The coating solution further contains a solvent. This solvent includes hydrocarbons such as hexane, toluene and cyclohexane; halogenated hydrocarbons such as methyl chloride, carbon tetrachloride and trichloroethylene; ketones such as acetone and methyl ethyl ketone; nitrogen-containing compounds such as diethylamine; alcohols Organic solvents such as esters such as ethyl acetate can be used. Among these, alcohol solvents are preferably used, and examples thereof include methyl alcohol, ethyl alcohol, 1-propyl alcohol, 2-propyl alcohol, butyl alcohol, and amyl alcohol. Among them, a chain saturated monohydric alcohol having 3 or less carbon atoms such as methyl alcohol, ethyl alcohol, 1-propyl alcohol, and 2-propyl alcohol is preferably used because it has a large evaporation rate at room temperature.

The coating solution further contains a catalyst. As the type of the catalyst, an alkali catalyst such as ammonium hydroxide, ammonia, sodium hydroxide or the like is preferably used. The pH of this coating solution is usually 10-14.
As the catalyst in the sol-gel method, acid catalysts such as hydrochloric acid, hydrofluoric acid, nitric acid, and acetic acid are often used. However, in the present invention, it is preferable to use an alkali catalyst because when the silica-based film is coated on a particulate base material like the glass flake used in the present invention, the particles cause aggregation.

  In this coating solution, 1 to 60% by mass of flaky glass is dispersed and allowed to stand for 1 to 15 hours to hydrolyze / condense the organosilicon compound. Thus, a silica film having a thickness of 50 nm to 1 μm and dispersedly containing an inorganic pigment is formed on the entire surface of the scaly glass. Subsequently, this is washed with water, filtered and dried. The drying is preferably performed at room temperature to 200 ° C. for 3 to 5 hours.

  In order to further impart and improve the chemical resistance, particularly alkali resistance, the scale-like glass used in the present invention may be coated with zirconium oxide, aluminum oxide, zinc oxide or the like on the outermost surface. The coating of zirconium oxide or the like can be performed by, for example, a known LPD method.

(Use)
The colored glitter pigment according to the present invention is highly safe and stable, and exhibits pearly luster and iridescent interference color, and thus can be applied to various uses.
For example, applications of resin composition products include cosmetic containers, food containers, wall coverings, flooring, home appliances, accessories, stationery, toys, bathtubs, bath products, footwear, sports equipment, toilet articles, etc. It is done.
Ink applications include packaging packages, wrapping paper, wallpaper, cloth, decorative plates, textiles, various films, labels, and the like.
Applications of paint include exteriors for automobiles, motorcycles, bicycles, building materials, tiles, furniture, household items, cosmetics, containers, office supplies, sports equipment, and the like.
Other applications include watercolor paints, oil paints, genuine leather synthetic leather, textile printing, buttons, lacquerware, ceramic pigments and the like.

Application of cosmetics includes facial cosmetics, makeup cosmetics, hair cosmetics, and the like. Among these, the glitter pigment is preferably used in makeup cosmetics such as makeup foundations, foundations such as powdery white powder, eye shadow, blusher, nail enamel, eyeliner, mascara, lipstick, and fancy powder. The form of the cosmetic is not particularly limited, and examples thereof include powder, cake, pencil, stick, ointment, liquid, emulsion, and cream.
[Example 1]
Mix 15 mL of tetraethoxysilane, 300 mL of ethyl alcohol, and 60 mL of pure water. To this, 0.8 g of a solution containing 40% by mass of inorganic pigment (cobalt blue (CIGN. Pigment: B-28)) fine particles (average particle size: about 70 nm) was added and mixed to obtain a coating solution.

  Next, 30 g of glass flakes coated with silver (manufactured by Nippon Sheet Glass Co., Ltd., MEG020PS) is added to this coating solution, and the mixture is stirred and mixed with a stirrer. This scaly glass has an average particle diameter of 20 μm, an average thickness of 0.7 μm, and has a metallic luster color. Then, 14 mL of ammonium hydroxide solution (concentration 25%) is added to the coating solution. In this state, a dehydration condensation reaction is performed while stirring and mixing for 2 to 3 hours. If it carries out like this, the silica membrane | film | coat containing an inorganic pigment can be uniformly deposited on the surface of scaly glass in a coating solution. Subsequently, filtration and water washing were repeated several times, followed by drying, and finally heat treatment at 180 ° C. for 2 hours. Thus, a bright pigment coated with a silica film (film thickness 100 nm) containing an inorganic pigment was obtained. This luster pigment exhibited a blue with a metallic luster.

  FIG. 1 is a schematic cross-sectional view of the resulting bright pigment. In the colored glitter pigment 1 according to the present invention, a scaly glass 21 is coated as a substrate with a silver coating layer 22 as a metal, and a silica-based coating 31 containing an inorganic pigment 32 is dispersed and contained. It is covered.

[Example 2]
Example 1 except that fine particles of inorganic pigment (carbon black (CIGN. Pigment: BK-7)) were used instead of fine particles of inorganic pigment (cobalt blue (CIGN. Pigment: B-28)) in Example 1. In the same manner as in No. 1, a bright pigment was prepared. In this way, a bright pigment coated with a silica film (thickness: 100 nm) containing an inorganic pigment was obtained. This luster pigment exhibited a metallic glossy black color.

[Example 3]
Mix 4 mL of tetraethoxysilane, 75 mL of ethyl alcohol, and 15 mL of pure water. To this, 0.75 g of a solution containing 10% by mass of inorganic pigment (cobalt blue (CIGN. Pigment: B-28)) fine particles (average particle size: about 100 nm) was added and mixed to obtain a coating solution.

  Next, 30 g of scale-like glass coated with nickel (manufactured by Nippon Sheet Glass Co., Ltd., MC5090NS) is added to this coating solution, and the mixture is stirred and mixed with a stirrer. This scaly glass has an average particle diameter of 90 μm, an average thickness of 5.0 μm, and exhibits a metallic luster. Thereafter, 0.9 mL of ammonium hydroxide solution (concentration 25%) is added to the coating solution. In this state, a dehydration condensation reaction is performed while stirring and mixing for 2 to 3 hours. If it carries out like this, the silica membrane | film | coat containing an inorganic pigment can be uniformly deposited on the surface of scaly glass in a coating solution. Subsequently, filtration and water washing were repeated several times, followed by drying, and finally heat treatment at 180 ° C. for 2 hours. In this way, a glitter pigment coated with a silica film (film thickness 100 nm) containing an inorganic pigment was obtained. This glittering pigment exhibited a black color with metallic luster.

[Comparative Example 1]
The scaly glass having metallic luster in Example 1 was used as it was as a bright pigment without forming an inorganic pigment-containing silica film.

[Comparative Example 2]
A bright pigment was produced in the same manner as in Example 1 except that commercially available aluminum powder was used instead of the glass flakes coated with silver in Example 1.

[Evaluation of luster pigment]
Take 1 g of each of the glitter pigments prepared as described above, mix with 49 g of acrylic resin (Acrylic Auto Clear Super manufactured by Nippon Paint Co., Ltd.) (solid weight), stir well using a paint shaker, did. This mixed solution was applied onto concealment measurement paper using an applicator, and allowed to stand at room temperature to be sufficiently dried to form a coating film.

  The design properties of this coating film were evaluated by five sensory testers. The sensory test was performed under daylight sunlight and evaluated for glitter and color vividness. The comprehensive evaluation results of five sensory testers are summarized below.

Example 1
A vivid and deep blue color was observed with strong metallic luster. Moreover, even when observed from a small angle with respect to the coating film surface, there was no loss in design due to cloudiness.

Example 2
A vivid and deep black color was observed with a strong metallic luster. Moreover, even when observed from a small angle with respect to the coating film surface, there was no loss in design due to cloudiness.

Example 3
A vivid and deep black color was observed with a strong metallic luster. Moreover, even when observed from a small angle with respect to the coating film surface, there was no loss in design due to cloudiness.

Comparative example 1
A bright color due to metallic luster was observed. When observed from a small angle with respect to the coating surface, a vivid color with no cloudiness was observed.

Comparative example 2
Although there was a glittering feeling due to metallic luster, the glittering feeling was lower than in Example 1 or Example 3, and a white scattered state was observed. Furthermore, when observed from a small angle with respect to the coating film surface, the degree of cloudiness was strong.

By examining the results of the above examples and comparative examples, the following can be understood.
From the comparison between Example 1 and Comparative Example 1, it can be seen that coating with an inorganic pigment-containing silica film can maintain a deep hue without impairing the original metallic luster.

  Further, from the comparison between Example 1 and Comparative Example 2, when silver-coated aluminum is used as the substrate of the glitter pigment, the glitter feeling is low and a white scattered state is observed. In particular, when observed from a small angle with respect to the coating film surface, the degree of white turbidity becomes strong and the color tone is greatly inferior.

It is a cross-sectional schematic diagram of the colored luster pigment by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bright pigment 21 Scale glass 22 Coating layer 31 Silica-type film | membrane 32 Inorganic pigment

Claims (12)

  A colored glitter pigment, characterized in that a silica-based film containing an inorganic pigment is coated on the surface of a glass flake.   The colored glitter pigment according to claim 1, wherein a coating layer is coated on a surface of the glass flakes, and further, the silica-based film is coated.   The colored glitter pigment according to claim 2, wherein the coating layer is formed of a metal oxide.   The colored glitter pigment according to claim 3, wherein the metal oxide is at least one metal oxide selected from the group consisting of titanium oxide, iron oxide, and zirconium oxide.   The colored glitter pigment according to claim 2, wherein the coating layer is made of metal.   The colored glitter pigment according to claim 5, wherein the metal is at least one metal selected from the group consisting of gold, silver, platinum, palladium, titanium, cobalt, and nickel, and / or an alloy thereof.   The colored glitter pigment according to any one of claims 1 to 6, wherein the silica-based film has a matrix substantially composed only of silica.   The colored glitter pigment according to any one of claims 1 to 7, wherein an average particle diameter of the inorganic pigment is 10 nm to 1 µm.   The coating material containing the luster pigment described in any one of Claims 1-8.   The resin composition containing the luster pigment described in any one of Claims 1-8.   An ink comprising the glitter pigment according to any one of claims 1 to 8.   Cosmetics containing the luster pigment described in any one of Claims 1-8.

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