发明授权
US4666619A Ethylene polymer useful as a lubricating oil viscosity modifier E-25
失效
用作润滑油粘度调节剂E-25的乙烯聚合物
- 专利标题: Ethylene polymer useful as a lubricating oil viscosity modifier E-25
- 专利标题(中): 用作润滑油粘度调节剂E-25的乙烯聚合物
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申请号: US785726申请日: 1985-10-09
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公开(公告)号: US4666619A公开(公告)日: 1987-05-19
- 发明人: Edward N. Kresge , Gary W. Ver Strate
- 申请人: Edward N. Kresge , Gary W. Ver Strate
- 申请人地址: NJ Florham Park
- 专利权人: Exxon Research & Engineering Co.
- 当前专利权人: Exxon Research & Engineering Co.
- 当前专利权人地址: NJ Florham Park
- 主分类号: C08F210/18
- IPC分类号: C08F210/18 ; C10M143/14 ; C10M115/02
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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