发明名称 |
METHOD FOR PREPARING A SYNTHETIC TALC COMPOSITION FROM A KEROLITE COMPOSITION |
摘要 |
<p>The invention relates to a method for preparing a synthetic talc composition. According to said method, a kerolite composition is subjected to an anhydrous thermal treatment carried out at a pressure lower than 5 bar, from over a few hours up to over a few days, at a treatment temperature higher than 300° C. The invention also relates to a synthetic talc composition prepared in this way, the synthetic talc particles of the composition being exclusively of chemical formula—(Si4)Mg3O10(OH)2—and identifiable, during X-ray diffraction, by the presence of a characteristic diffraction peak located at a distance of between 9.40-9.68 and corresponding to a plane (001). Said synthetic talc particles also have a thermally stable crystalline structure of stacked laminae, which is very similar to that of a natural talc and has a particle size smaller than approximately ten micrometers.</p> |
申请公布号 |
EP2046683(B1) |
申请公布日期 |
2014.09.03 |
申请号 |
EP20070803867 |
申请日期 |
2007.07.13 |
申请人 |
LUZENAC EUROPE SAS;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) |
发明人 |
MARTIN, FRANÇOIS;FERRET, JOCELYNE;LEBRE, CÉDRIC;PETIT, SABINE;GRAUBY, OLIVIER;BONINO, JEAN-PIERRE;ARSEGUEL, DIDIER;DECARREAU, ALAIN;FERRAGE, ERIC |
分类号 |
B82Y30/00;C01B33/22;C01B33/40;C09C1/28 |
主分类号 |
B82Y30/00 |
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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