发明名称 |
Solid titanium catalyst component, process for preparing same, olefin polymerization catalyst containing same, and olefin polymerization process |
摘要 |
This invention provides a solid titanium catalyst component which comprises magnesium, titanium, halogen and an electron donor, is free from elimination of titanium when washed with hexane at room temperature, and has a titanium content decrease ratio of less than 15 % by weight when washed with o-dichlorobenzene at 90° C. The catalyst component can be prepared by a process wherein solid titanium (i) which is free from elimination of titanium when washed with hexane at room temperature is contacted with a polar compound having a dipole moment of 0.50 to 4.00 Debye to decrease the titanium content by at least 25 % by weight, whereby a solid titanium catalyst component having a weight ratio of an electron donor to titanium of at least 6 is prepared. Olefin polymerization catalyst containing the solid titanium catalyst component can be used for (co)polymerization of olefins with high activity to obtain a polyolefin of high stereoregularity in decreased quantities of a low stereoregular polyolefin.
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申请公布号 |
US6521560(B1) |
申请公布日期 |
2003.02.18 |
申请号 |
US19980109908 |
申请日期 |
1998.07.02 |
申请人 |
MITSUI CHEMICALS INC. |
发明人 |
KOJOH SHINICHI;KIOKA MAMORU |
分类号 |
B01J31/38;B01J37/00;C08F4/646;C08F4/654;C08F4/656;C08F10/00;(IPC1-7):C08F4/60;C08F4/02;B01J31/00 |
主分类号 |
B01J31/38 |
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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