| 发明名称 |
PROCESS FOR PREPARING STAR POLYMER COMPOSITIONS |
| 摘要 |
The present invention provides a process for preparing nitrogen-containing star polymer compositions having polymeric arms of a hydrogenated conjugated diene and substantially smaller polymeric arms of an alkyl methacrylate which are efficiently reacted with amines after preparation of a concentrate of the polymer in a lubricating oil to form a dispersant viscosity index improver.
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| 申请公布号 |
WO9619505(A1) |
申请公布日期 |
1996.06.27 |
| 申请号 |
WO1995EP05129 |
申请日期 |
1995.12.18 |
| 申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
SUTHERLAND, ROBERT, JUDE |
| 分类号 |
C10M149/02;C08F8/32;C10M149/06;C10M159/12;C10N30/02;C10N30/04;C10N40/25;(IPC1-7):C08F8/32;C10M145/14 |
主分类号 |
C10M149/02 |
| 代理机构 |
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| 主权项 |
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