Abstract: Disclosed are a pigment having excellent electrical conductivity and corrosion resistance and a method for preparing the same. The method for preparing a pigment according to the present invention comprises the steps of: (a) stirring and dispersing flakes in water to form a suspension; (b) forming a catalyst layer on surfaces of the flakes; and (c) plating the surfaces of the flakes on which the catalyst layer is formed.

Abstract: The present invention relates to flaky aluminum oxide and a preparation method thereof, and more particularly, to a flaky aluminum oxide which is suitably used as a substrate for a pearlescent pigment or the like, and to a preparation method thereof.

Abstract: The present invention relates to a method of preparing a colored gloss pigment using a natural dye. According to the present disclosure, the method may include preparing a dye from a dye material of natural dyes; titrating the dye with an inorganic salt solution and subsequently adjusting a pH neutral to prepare a natural pigment containing the dye; dispersing a substrate coated with a metal oxide into a DI water to form a substrate suspension; and introducing a pH adjusting agent and the natural pigment into the substrate suspension to coat a surface of the substrate with the natural pigment.

Abstract: The present invention relates to flaky aluminum oxide and a preparation method thereof, and more particularly, to a flaky aluminum oxide which is suitably used as a substrate for a pearlescent pigment or the like, and to a preparation method thereof.

Abstract: Disclosed is a cosmetic composition capable of exhibiting various colors, including red, yellow and blue colors. The disclosed cosmetic composition comprises one or more pigments selected from among a natural pigment, a red, yellow or blue pearlescent pigment prepared by coating a natural pigment on a matrix, and a red, yellow or blue pearlescent pigment prepared by coating a metal oxide on a matrix, so that it is capable of exhibiting various colors.

Abstract: The present invention relates to a method for preparing an iron oxide-based gloss and, more specifically, to a method for preparing an iron oxide-based black glossy pigment with high yield using iron sulfate as a starting material through thermal synthesis without sintering, wherein the method comprises the steps of: preparing an iron sulfate dilution liquid; forming a suspension of flake substrates; titrating the substrate suspension with an aqueous inorganic salt solution and mixing the iron sulfate dilution liquid therewith, thereby coating an oxide layer on surfaces of the flake substrates.

Abstract: The present invention relates to a method of preparing a colored gloss pigment using a natural dye. According to the present disclosure, the method may include preparing a dye from a dye material of natural dyes; titrating the dye with an inorganic salt solution and subsequently adjusting a pH neutral to prepare a natural pigment containing the dye; dispersing a substrate coated with a metal oxide into a DI water to form a substrate suspension; and introducing a pH adjusting agent and the natural pigment into the substrate suspension to coat a surface of the substrate with the natural pigment.

Abstract: Disclosed are a pigment having excellent electrical conductivity and corrosion resistance and a method for preparing the same. The method for preparing a pigment according to the present invention comprises the steps of: (a) stirring and dispersing flakes in water to form a suspension; (b) forming a catalyst layer on surfaces of the flakes; and (c) plating the surfaces of the flakes on which the catalyst layer is formed.

Abstract: The present invention relates to a nacreous pigment and a method of preparing the same. The nacreous pigment includes a flake substrate, a first metal oxide layer coated on the substrate, and an oxide layer coated on the first metal oxide layer and containing MgO.SiO2, and a second metal oxide layer coated on the oxide layer. The pigment exhibits high brightness, high chroma, high gloss, and multi-color effects.

Abstract: Disclosed is a method for manufacturing plate ?-alumina pearlescent pigments and nano-metal coating pearlescent pigments with a large aspect ratio, having excellent reflectivity and capable of expressing various colors.

Abstract: The interference pigment with high color intensity includes: a platelet-shaped substrate including at least one of natural mica, synthetic mica, alumina flakes, glass flakes, and iron oxide flakes; a lower first metal oxide layer formed of Fe2O3 on the platelet-shaped substrate; a second metal oxide layer formed of MgO•SiO2 on the lower first metal oxide layer; and an upper first metal oxide layer formed of Fe2O3 on the second metal oxide layer.

Abstract: Disclosed is a method for producing a silver (Ag) coating pigment. The method for producing a silver coating pigment according to the present invention comprises: a step of forming a tin compound pretreatment layer on the matrix surface; and a step of forming a silver coating layer on the lower portion of the tin compound pretreatment layer through a reflux and electroless plating process using a diluted solution of silver nitrate, ammonia water, a citric acid solution, and a diluted solution of potassium hydroxide.

Abstract: The present invention relates to a pigment paint for an exterior material and to a method for manufacturing the same. The pigment paint comprises: a flake matrix, a first metal oxide layer coated on the upper portion of the transparent matrix, an oxide layer containing MgO—SiO2 coated on the upper portion of the first metal oxide layer, and a second metal oxide layer coated on the upper portion of the oxide layer. In order to ensure humidity resistance and weather resistance required for a lustrous pigment paint for exterior materials, a cerium layer and an aluminum oxide layer are further coated. Properties such as high luminance, high chromaticity, and high gloss, which could not be achieved using conventional techniques, can be achieved and a pigment paint having a multi-colored pearl luster can be provided.

Abstract: The interference pigment with high color intensity includes: a platelet-shaped substrate including at least one of natural mica, synthetic mica, alumina flakes, glass flakes, and iron oxide flakes; a lower first metal oxide layer formed of Fe2O3 on the platelet-shaped substrate; a second metal oxide layer formed of MgO.SiO2 on the lower first metal oxide layer; and an upper first metal oxide layer formed of Fe2O3 on the second metal oxide layer.

Abstract: Disclosed is a method for producing a silver (Ag) coating pigment. The method for producing a silver coating pigment according to the present invention comprises: a step of forming a tin compound pretreatment layer on the matrix surface; and a step of forming a silver coating layer on the lower portion of the tin compound pretreatment layer through a reflux and electroless plating process using a diluted solution of silver nitrate, ammonia water, a citric acid solution, and a diluted solution of potassium hydroxide.

Abstract: The present invention relates to a pigment paint for an exterior material and to a method for manufacturing the same. The pigment paint comprises: a flake matrix, a first metal oxide layer coated on the upper portion of the transparent matrix, an oxide layer containing MgO—SiO2 coated on the upper portion of the first metal oxide layer, and a second metal oxide layer coated on the upper portion of the oxide layer. In order to ensure humidity resistance and weather resistance required for a lustrous pigment paint for exterior materials, a cerium layer and an aluminum oxide layer are further coated. Properties such as high luminance, high chromaticity, and high gloss, which could not be achieved using conventional techniques, can be achieved and a pigment paint having a multi-colored pearl luster can be provided.

Abstract: The present invention relates to a nacreous pigment and a method of preparing the same. The nacreous pigment includes a flake substrate, a first metal oxide layer coated on the substrate, and an oxide layer coated on the first metal oxide layer and containing MgO.SiO2, and a second metal oxide layer coated on the oxide layer. The pigment exhibits high brightness, high chroma, high gloss, and multi-color effects.

Abstract: The present invention relates to a flaky ?-alumina crystal and a preparation method thereof. More particularly, the present invention relates to a flaky ?-alumina crystal comprising aluminum oxide and zinc oxide, which is prepared by hydrolyzing an aluminum precursor solution containing a water-soluble flux and a zinc precursor solution to obtain a gel mixture and aging, drying, calcining and crystallizing it under a specific reaction condition, and a preparation method thereof. Since the flaky ?-alumina crystal of the present invention has a thickness of less than 0.5 ?m, an average particle diameter of at least 15 ?m and an aspect ratio of at least 50, it is useful as high-quality pearlescent pigment material and filler for ceramic materials.

Abstract: The present invention relates to a flake pigment, a preparation method thereof and a cosmetic composition comprising the same, and particularly to a flake pigment prepared by coating a metal oxide on the surface of a flake synthetic aluminum having predetermined ranges of an aspect ratio and an average particle diameter, wherein the pigment shows interference colors while reducing the glossiness, thereby enabling cosmetics containing the pigments to be superior in natural transparency and adhesive and slipping properties as well as in color expression and a mat feel due to a low glossiness, along with a preparation method thereof and a cosmetic composition comprising the same.

Abstract: The present invention relates to a flaky ?-alumina crystal and a preparation method thereof. More particularly, the present invention relates to a flaky ?-alumina crystal comprising aluminum oxide and zinc oxide, which is prepared by hydrolyzing an aluminum precursor solution containing a water-soluble flux and a zinc precursor solution to obtain a gel mixture and aging, drying, calcining and crystallizing it under a specific reaction condition, and a preparation method thereof. Since the flaky ?-alumina crystal of the present invention has a thickness of less than 0.5 ?m, an average particle diameter of at least 15 ?m and an aspect ratio of at least 50, it is useful as high-quality pearlescent pigment material and filler for ceramic materials.