发明名称 |
Ethylene polymer useful as a lubricating oil viscosity modifier E-25 |
摘要 |
An ethylene ter- or tetrapolymer useful as a viscosity modifer and a process for preparing the polymer. The polymer comprises ethylene, an alpha-olefin, a non-conjugated diene and, optionally, a cationically polymerizable monoolefin. The polymerization catalyst comprises a Ziegler catalyst in conjunction with a cationic polymerization catalyst.
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申请公布号 |
US4666619(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19850785726 |
申请日期 |
1985.10.09 |
申请人 |
EXXON RESEARCH & ENGINEERING CO. |
发明人 |
KRESGE, EDWARD N.;VER STRATE, GARY W. |
分类号 |
C08F210/18;C10M143/14;(IPC1-7):C10M115/02 |
主分类号 |
C08F210/18 |
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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