发明名称 |
Polymerization of polyethylene having high molecular weight |
摘要 |
The present invention includes a bimodal polyethylene polymerization process wherein metallocene catalyst to is used to adjust the hydrogen response of a Ziegler-Natta catalyst. The polymerization may be carried out in a single reactor or in two or more reactors in series, preferably two or more continuously stirred tank reactors in series. In an embodiment having two or more reactors, the Zeigler-Natta catalyst is added to a first reactor and the metallocene catalyst is added to a downstream reactor. In another embodiment having two or more reactors, the Zeigler-Natta catalyst and metallocene catalyst are added to the same reactor, preferably an upstream reactor. A preferred Zeigler-Natta catalyst comprises TiCl<SUB>4</SUB>, and a preferred metallocene catalyst comprises bis(cyclopentadienyl) titanium dichloride.
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申请公布号 |
US2006142508(A1) |
申请公布日期 |
2006.06.29 |
申请号 |
US20040793027 |
申请日期 |
2004.03.04 |
申请人 |
SHAMSHOUM EDWAR S;HASPESLAGH LUC;CHEN HONG |
发明人 |
SHAMSHOUM EDWAR S.;HASPESLAGH LUC;CHEN HONG |
分类号 |
C08F4/44;C08F4/42;C08F4/659;C08F4/6592;C08F10/00;C08F10/02;C08F110/02 |
主分类号 |
C08F4/44 |
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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