发明名称 |
SILICA-COATED MIXED CRYSTAL OXIDE PARTICLE, PRODUCTION PROCESS THEREOF AND COSMETIC MATERIAL USING THE SAME |
摘要 |
Provided are a silica-coated mixed crystal oxide particle which has high dispersibility, excellent visible light transparency and superior ultraviolet-shielding capability and which is sufficiently reduced in the photocatalytic activity; an economical production process thereof; and an ultraviolet-shielding cosmetic material containing the silica-coated mixed crystal oxide particle, which is particularly excellent in the visible light transparency. The surface of a mixed crystal oxide particle having a BET specific surface area of 10 to 200 m<2>/g and containing primary particles in a mixed crystal is covered with a dense and thin film silica.
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申请公布号 |
WO03025071(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
WO2002JP09432 |
申请日期 |
2002.09.13 |
申请人 |
SHOWA DENKO K.K.;ISHII, NOBUAKI;WADA, KOUICHI;TAKAMA, MICHIHIRO |
发明人 |
ISHII, NOBUAKI;WADA, KOUICHI;TAKAMA, MICHIHIRO |
分类号 |
A61K8/02;A61K8/11;A61K8/25;A61K8/26;A61K8/27;A61K8/29;A61Q1/02;A61Q1/06;A61Q1/12;A61Q17/04;A61Q19/00;C09C1/04;C09C1/24;C09C1/36;C09C3/06;(IPC1-7):C09C1/04;A61K8/18 |
主分类号 |
A61K8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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