发明授权
- 专利标题: Coloring pearlescent flake pigment, manufacturing method of the same and cosmetic product containing the same
- 专利标题(中): 着色珠光片颜料,其制造方法和含有它们的化妆品
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申请号: US10447276申请日: 2003-05-29
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公开(公告)号: US06837925B2公开(公告)日: 2005-01-04
- 发明人: Yasushi Kubo , Hideji Kagawa
- 申请人: Yasushi Kubo , Hideji Kagawa
- 申请人地址: JP Hamamatsu JP Osaka
- 专利权人: Yasushi Kubo,Daito Kasei Kogyo Co., Ltd.
- 当前专利权人: Yasushi Kubo,Daito Kasei Kogyo Co., Ltd.
- 当前专利权人地址: JP Hamamatsu JP Osaka
- 代理机构: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP
- 主分类号: A61K8/26
- IPC分类号: A61K8/26 ; A61K8/46 ; A61Q1/06 ; C09C1/00 ; C04B14/00
摘要:
A coloring pearlescent flake pigment capable of providing pearl-like luster caused by interference color and a vivid color caused by a tar color is provided as a new material which contributes to the diversification of cosmetics and paints thanks to its powdery smoothness and the visual effect as well as covering protection effect in an application layer. The coloring pearlescent flake pigment having a double coating layer which is formed on inorganic flake-like particles and which is composed of a high-refraction-index metal oxide (e.g., titanium dioxide) and a hydrotalcite-like coloring composition is produced by the following process: In an aqueous suspension containing inorganic flake-like particles coated with a high-refraction-index metal oxide, a soluble anionic dye, a plurality of soluble metallic salts which are the raw materials of a double hydroxide, and a neutralizing base including urea are allowed to react, so that a hydrotalcite-like coloring composition precipitates on the inorganic flake-like particles.
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