发明名称 |
Compositions based on rare earth sulfides, preparation and use thereof. |
摘要 |
<p>The invention relates to new compositions based on rare-earth metal sesquisulphides M2S3, which can be used especially as colouration pigments, these compositions being characterized by the fact that they contain alkali metal and/or alkaline-earth metal elements for part at least included in the crystalline network of the said sesquisulphides. The process for their preparation consists in heating at a suitable temperature, under a non-oxidizing and preferably reducing atmosphere, an initial mixture containing a rare-earth compound, sulphur and a compound of an alkali metal and/or alkaline-earth metal element.</p> |
申请公布号 |
EP0545746(A1) |
申请公布日期 |
1993.06.09 |
申请号 |
EP19920402926 |
申请日期 |
1992.10.28 |
申请人 |
RHONE-POULENC CHIMIE |
发明人 |
CHOPIN, THIERRY;GUICHON, HERVE;TOURET, OLIVIER |
分类号 |
A61K8/30;A61K8/19;A61K8/23;A61Q1/02;C01F17/00;C08K3/30;C09C1/00;C09C3/06;C09D7/12;D06P1/00 |
主分类号 |
A61K8/30 |
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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