| 发明名称 |
A PROCESS FOR PREPARING NACREOUS PIGMENTS HAVING IMPROVED LIGHT-FASTNESS |
| 摘要 |
<p>Nacreous pigments having a yellow powder color and an improved light-fastness comprise a mica platelet coated with titanium dioxide and on the titanium dioxide layer, a thin layer of calcined chromium oxide and/or chromium phosphate as a protective layer. The pigments are produced by coating mica platelets coated with metal oxides and/or hydroxides, with a thin layer of a sparingly soluble chromium(III) compound and calcining at about 500 DEG -1000 DEG C.</p> |
| 申请公布号 |
IN157834(B) |
申请公布日期 |
1986.07.05 |
| 申请号 |
IN1982CA76219 |
申请日期 |
1982.06.29 |
| 申请人 |
MERCK PATENT GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG |
发明人 |
BERNHARD HORST (DR.) |
| 分类号 |
C09D5/36;A61K8/18;A61K8/19;A61K8/24;A61K8/25;A61K8/29;A61Q1/02;C09C1/00;C09C1/36;C09D7/00;C09D7/12;C09D11/00;C09D11/02;(IPC1-7):C09C3/00 |
主分类号 |
C09D5/36 |
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