| 发明名称 |
Star polymer viscosity index improver for oil lubricating compositions |
| 摘要 |
The present invention includes star polymers which can be used as viscosity index improvers in oil compositions formulated for high performance engines. The star polymers have triblock copolymer arms of hydrogenated polyisoprene and polystyrene wherein the polystyrene is placed near the core of the star polymer to provide excellent low temperature performance and finishability as a polymer crumb. |
| 申请公布号 |
EP0690082(A3) |
申请公布日期 |
1996.05.22 |
| 申请号 |
EP19950201796 |
申请日期 |
1995.06.30 |
| 申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
RHODES, ROBERT BARNETT;STEVENS, CRAIG ALDRED |
| 分类号 |
C09K3/00;C08F297/02;C08F297/04;C10M107/06;C10M107/12;C10M143/12;C10N20/04;C10N30/02 |
主分类号 |
C09K3/00 |
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