| 发明名称 |
PROCESSO PARA HIDROFOBIZACAO DE PIGMENTOS DE BRILHO DE PEROLA, PIGMENTOS E EMPREGO |
| 摘要 |
<p>A process for rendering nacreous pigments hydrophobic, the pigments being based on mica platelets coated with metal oxides, comprises coating the pigments in aqueous suspension with a chromium (III) or aluminum (III) hydroxide or silicate, and then treating the coated pigments with a solution of a hydrocarbon carboxylic acid having more than four carbon atoms per carboxyl group.</p> |
| 申请公布号 |
BR8301569(A) |
申请公布日期 |
1983.12.06 |
| 申请号 |
BR19838301569 |
申请日期 |
1983.03.25 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG |
发明人 |
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| 分类号 |
A61K8/18;A61K8/25;A61K8/26;A61Q1/02;C09C1/00;C09C1/40;C09C3/00;(IPC1-7):C09C1/00;A61K7/021;C09C3/08;C09D5/36;C08J3/20 |
主分类号 |
A61K8/18 |
| 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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