| 发明名称 |
WATER INSOLUBLE ORGANIC DYESTUFFS AND PROCESS FOR THEIR PREPARATION |
| 摘要 |
1. A process for the production of water-insoluble organic dyes, in particular for use as cosmetic, food and drug dyes, using watersoluble organic dyes which are embedded in crystalline aluminium oxide, characterized in that aluminium hydroxide is precipitated from a solution of an aluminium salt with the dye and the precipitate which is separated is annealed at a temperature of from 250 to 500 degrees C. |
| 申请公布号 |
EP0030278(A3) |
申请公布日期 |
1982.05.19 |
| 申请号 |
EP19800106911 |
申请日期 |
1980.11.08 |
| 申请人 |
DEGUSSA AKTIENGESELLSCHAFT |
发明人 |
DE AHNA, HEINZ DIETER, DR., DIPL.-CHEM.;KLEINSCHMIT, PETER, DR.,DIPL.-CHEM. |
| 分类号 |
A23L1/275;A61K9/00;A61K47/02;C08L63/00;C09B63/00;C09B67/00;C09B67/24 |
主分类号 |
A23L1/275 |
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