发明名称 |
Use of cholesteric liquid-crystalline polymers as UV screens in cosmetic and pharmaceutical preparations |
摘要 |
Cholesteric liquid-crystalline polymers, especially cholesteric liquid-crystalline polyesters, polycarbonates or polyamides, are used as photostable UV screens in cosmetic and pharmaceutical preparations for protecting the human epidermis or hair against UV radiation, especially in the region from 280 to 450 nm.
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申请公布号 |
US6159454(A) |
申请公布日期 |
2000.12.12 |
申请号 |
US19990416895 |
申请日期 |
1999.10.13 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
SCHUHMACHER, PETER;PRECHTL, FRANK |
分类号 |
A61K8/00;A61K8/02;A61K8/33;A61K8/34;A61K8/36;A61K8/368;A61K8/41;A61K8/46;A61K8/49;A61K8/72;A61K8/81;A61K8/85;A61K31/74;A61P17/00;A61Q5/00;A61Q17/04;(IPC1-7):A61K7/42;A61K7/44;A61K7/00 |
主分类号 |
A61K8/00 |
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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