发明名称 |
DUAL REACTOR POLYETHYLENE PROCESS USING A PHOSPHINIMINE CATALYST |
摘要 |
A dual reactor process for the solution (co)polymerization of ethylene uses a catalyst having a phosphinimine ligand in each of the two reactors. In a preferred embodiment, the two reactors are operated at different temperatures and/or with different cocatalyst systems (such as "alumoxanes" and "ionic activators") for the preparation of linear low density polyethylene ("LLPDE") having a broad molecular weight distribution. Certain LLDPE polymers of this invention have an outstanding balance of physical properties (high dart impact strength and tear strength) excellent optical properties and excellent processability.
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申请公布号 |
CA2245375(A1) |
申请公布日期 |
2000.02.19 |
申请号 |
CA19982245375 |
申请日期 |
1998.08.19 |
申请人 |
NOVA CHEMICALS LTD. |
发明人 |
BROWN, STEPHEN JOHN |
分类号 |
C08J5/18;C08F2/00;C08F2/01;C08F2/04;C08F4/16;C08F4/44;C08F4/62;C08F4/642;C08F4/643;C08F4/659;C08F10/02;C08F210/02;C08F210/16;(IPC1-7):C08F10/02;C08F4/52;C08F4/622 |
主分类号 |
C08J5/18 |
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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