发明名称 |
Process for preparing a vanadium-based catalyst suitable for olefin polymerisation. |
摘要 |
The present invention relates to a proces for preparing a Ziegler-Natta type catalyst based on a vanadium compound precipitated on a MgCl2 spherical support. The catalyst preparation consists of contacting within a liquid hydrocarbon a vanadium-reducing agent chosen from organometallic compounds with a vanadium compound soluble in the liquid hydrocarbon containing at least one halogen and one alkoxy group, and with a support containing (i) MgCl2 free from Mg-C bond and (ii) an organic electron donor compound free from labile hydrogen. The support consists of spherical particles having a well-defined diameter and a narrow particle size distribution. The catalyst is particularly suitable for manufacturing in a gas phase process elastomeric copolymers of propylene. |
申请公布号 |
EP0412729(A1) |
申请公布日期 |
1991.02.13 |
申请号 |
EP19900308541 |
申请日期 |
1990.08.02 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
BAILLY, JEAN-CLAUDE ANDRE, BP CHEMICALS S.N.C.;BRES, PHILIPPE |
分类号 |
C08F10/00;B01J31/36;B01J37/03;C08F4/60;C08F4/68;C08F210/16 |
主分类号 |
C08F10/00 |
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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