发明名称 |
Catalyst component for polymerization of olefins |
摘要 |
Disclosed is a catalyst component for polymerization of an olefin, which consists essentially of a contact reaction product of (A) a solid composition obtained by mixing and contacting a precipitating agent with a contact reaction product between a magnesium dihalide and a titanium tetraalkoxide and/or a polymer thereof, the addition of the precipitating agent being carried out with stirring at a stirring intensity lower than a level (2nf) two times the floatation limit stirring intensity (nf) of the reaction system, with (B) a liquid titanium compound and/or a halogen compound of silicon. This catalyst component has a high activity and provides a polymer in which the particle size is relatively large and the particle size distribution is sharply controlled.
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申请公布号 |
US4703026(A) |
申请公布日期 |
1987.10.27 |
申请号 |
US19860872832 |
申请日期 |
1986.06.11 |
申请人 |
MITSUBISHI PETROCHEMICAL COMPANY LIMITED |
发明人 |
MATSUURA, MITSUYUKI;FUJITA, TAKASHI |
分类号 |
C08F4/64;C08F10/00;(IPC1-7):C08F4/64 |
主分类号 |
C08F4/64 |
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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