发明名称 |
ZUSAMMENSETZUNGEN AUF BASIS VON SAMARIUMSESQUISULFID, VERFAHREN ZU DEREN HERSTELLUNG UND VERWENDUNG ALS FARBPIGMENT |
摘要 |
The composition is based on a samarium sesquisulphide, it exhibits a samarium purity with respect to other rare earth metals of greater than 99% and it comprises at least one alkali metal or alkaline earth metal element, at least a portion of which is included in the crystal lattice of the said sesquisulphide. According to another embodiment, the composition is based on a sesquisulphide of samarium and of at least one rare earth metal which is solely trivalent and it comprises at least one alkali metal or alkaline earth metal element, at least a portion of which is included in the crystal lattice of the said sesquisulphide. According to a third embodiment, the composition exhibits a samarium purity such that the cerium content is less than 1%. The process consists in reacting samarium, trivalent rare earth metal and alkali metal or alkaline earth metal compounds with a gaseous mixture of hydrogen sulphide and of carbon disulphide. |
申请公布号 |
AT228969(T) |
申请公布日期 |
2002.12.15 |
申请号 |
AT19980941573T |
申请日期 |
1998.08.07 |
申请人 |
RHODIA CHIMIE |
发明人 |
BUSNOT, SYLVAIN;MACAUDIERE, PIERRE |
分类号 |
C01F17/00;C08K3/30;C09C1/00;C09C3/06;C09D7/12;C09D11/02;C09D201/00 |
主分类号 |
C01F17/00 |
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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