发明名称 |
POLYFUNCTIONAL ORGANOSILANE TREATMENT OF SILICA |
摘要 |
<p>The present invention provides a method of treating silica wherein silica is reacted with a di- or tri-functional organosilane in an aqueous acid medium to provide a crude organosilane-capped silica product containing organosilicon impurities. The organosilicon impurities are extracted from the crude product with an organic liquid to provide a purified product consisting essentially of organosilane-capped silica. The purified product is dried to provide a dry organosilane-capped silica. The aqueous acid medium can include a displacing reagent which displaces at least one reactive functional group of the di- or tri-functional organosilane. The present invention further provides-continuous methods of treating silica with di- and tri-functional organosilanes, wherein the organic liquid and/or the organosilicon impurities are recycled and reused.</p> |
申请公布号 |
EP1047632(A2) |
申请公布日期 |
2000.11.02 |
申请号 |
EP19990901330 |
申请日期 |
1999.01.13 |
申请人 |
CABOT CORPORATION |
发明人 |
MENON, VINAYAN, C.;WALLACE, STEPHEN;MASKARA, ALOK;SMITH, DOUGLAS, M.;KOEHLERT, KENNETH, C. |
分类号 |
C01B33/149;C01B33/159;C01B33/18;C09C1/30;(IPC1-7):C01B33/00 |
主分类号 |
C01B33/149 |
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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