发明名称 |
Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use |
摘要 |
A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.
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申请公布号 |
US7365138(B2) |
申请公布日期 |
2008.04.29 |
申请号 |
US20050031587 |
申请日期 |
2005.01.07 |
申请人 |
FINA TECHNOLOGY, INC. |
发明人 |
GRAY STEVEN D.;COFFY TIM J;SHAMSHOUM EDWAR S.;CHEN HONG |
分类号 |
C08F4/654;C08F10/00;C08F110/02 |
主分类号 |
C08F4/654 |
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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