发明名称 |
Process for the preparation of a melanic pigment of small particle size and its use in cosmetics |
摘要 |
Process for the preparation of a melanic pigment of small particle size and its use in cosmetics. The subject of the present invention is a process for the preparation of a melanic pigment of very small particle size in which 100% of the particles have a particle size smaller than 1 mu m, consisting in dissolving a melanin of natural and/or synthetic origin in an aqueous medium containing at least one alkalifying agent and/or at least one sequestering agent, and in precipitating the melanin thus dissolved by addition of at least one alkaline-earth metal salt. Another subject of the invention is the use of this pigment in compositions for cosmetic treatments and for dyeing hair.
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申请公布号 |
US5776241(A) |
申请公布日期 |
1998.07.07 |
申请号 |
US19970815662 |
申请日期 |
1997.03.10 |
申请人 |
L'OREAL |
发明人 |
GIACOMONI, PAOLO;MARROT, LAURENT;MELLUL, MYRIAM;COLETTE, ANNICK |
分类号 |
A61K8/72;A61Q1/02;A61Q5/10;A61Q17/04;C09B67/54;(IPC1-7):F08K5/00 |
主分类号 |
A61K8/72 |
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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