发明名称 |
Continuous process for the preparation of solid catalyst components for the polymerization of alpha-olefins |
摘要 |
A process is provided for the preparation of a solid catalyst component for the polymerization of olefins, comprising continuously feeding a liquid containing a titanium compound having at least one titanium-halogen bond into a vessel containing a solid comprising a magnesium halide and continuously discharging liquid from the vessel, whereby the concentration of the solid is maintained within the range of between 80 and 300 g/l, and the product between the average residence time of the liquid in the vessel and the concentration of the solid is maintained below 10,000 min*g/l. An advantage of the process is the reduced time and reactor volume necessary to prepare the catalysts, which show good activity and stereospecificity.
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申请公布号 |
US6770718(B2) |
申请公布日期 |
2004.08.03 |
申请号 |
US20020181336 |
申请日期 |
2002.07.17 |
申请人 |
BASELL POLIOLEFINE ITALIA S.P.A. |
发明人 |
COVEZZI MASSIMO;FAIT ANNA;DI BENEDETTO ALMERINDA |
分类号 |
C08F4/654;C08F10/00;C08F110/06;(IPC1-7):C08F4/44 |
主分类号 |
C08F4/654 |
代理机构 |
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地址 |
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