发明授权
- 专利标题: Star polymer viscosity index improver for oil compositions
- 专利标题(中): 用于油组合物的星形聚合物粘度指数改进剂
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申请号: US303972申请日: 1994-09-09
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公开(公告)号: US5460739A公开(公告)日: 1995-10-24
- 发明人: Robert B. Rhodes , Dale L. Handlin, Jr. , Craig A. Stevens
- 申请人: Robert B. Rhodes , Dale L. Handlin, Jr. , Craig A. Stevens
- 申请人地址: TX Houston
- 专利权人: Shell Oil Company
- 当前专利权人: Shell Oil Company
- 当前专利权人地址: TX Houston
- 主分类号: C08F8/04
- IPC分类号: C08F8/04 ; C08F297/02 ; C08F297/04 ; C10M143/10 ; C10M143/12 ; C10N30/02 ; C10M107/14 ; C08F255/06 ; C08F293/00 ; C08F295/00
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-polybutadiene-polyisoprene, which provide excellent low temperature performance in lubricating oils, and can be used in the presence of low pour point depressant concentrations.
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