| 发明名称 |
Block copolymers. |
| 摘要 |
Novel, selectively hydrogenated block copolymers, which copolymers comprise at least one block of polymerized alkyl methacrylate and one block of polymerized conjugated alkadiene, provide improved dispersant properties and viscosity index improvement to hydrocarbon lubricating oils.
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| 申请公布号 |
EP0431706(A2) |
申请公布日期 |
1991.06.12 |
| 申请号 |
EP19900203198 |
申请日期 |
1990.12.04 |
| 申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
WILLIS, CARL LESLEY;DUBOIS, DONN ANTHONY |
| 分类号 |
C08F8/04;C08F297/02;C10M145/14;C10N30/02;C10N30/04;C10N60/02 |
主分类号 |
C08F8/04 |
| 代理机构 |
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代理人 |
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| 地址 |
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