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公开(公告)号:US6034042A
公开(公告)日:2000-03-07
申请号:US251508
申请日:1999-02-17
IPC分类号: C10M143/12 , C08F8/04 , C08F297/00 , C08F297/04 , C08L53/02 , C10M143/10 , C10N20/02 , C10N30/04 , C10N40/25 , C10N60/02 , C10M143/00 , C08F293/00
CPC分类号: C10M143/12 , C08F297/044 , C08L53/025 , C10M2205/04 , C10M2205/06 , C10N2240/10 , C10N2240/101 , C10N2240/104 , C10N2240/106
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 tetrablock copolymer arms of hydrogenated polyisoprene-polybutadiene-polyisoprene with a block of polystyrene and which provide excellent low temperature performance in lubricating oils, exhibit good thickening efficiency, and are finishable as polymer crumb.
摘要翻译: 本发明包括可用作为高性能发动机配制的油组合物中的粘度指数改进剂的星形聚合物。 星形聚合物具有氢化聚异戊二烯 - 聚丁二烯 - 聚异戊二烯与聚苯乙烯嵌段的四嵌段共聚物臂,并且在润滑油中提供优异的低温性能,显示出良好的增稠效率,并且作为聚合物碎屑可以完成。
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公开(公告)号:USH1799H
公开(公告)日:1999-08-03
申请号:US164733
申请日:1993-12-07
IPC分类号: C08F8/00 , C08F8/04 , C08F297/02 , C08F297/04 , C08G81/02 , C10M143/12
CPC分类号: C10M143/12 , C08F297/02 , C08F297/044 , C08F297/046 , C08G81/021 , C10M2203/108 , C10M2205/04 , C10M2205/06 , C10N2240/10 , C10N2240/101 , C10N2240/104 , C10N2240/106
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 copolymer arms of hydrogenated polyisoprene and polystyrene with sufficient amounts of polystyrene to be finishable as a polymer crumb.
摘要翻译: 本发明包括可用作为高性能发动机配制的油组合物中的粘度指数改进剂的星形聚合物。 星形聚合物具有氢化聚异戊二烯和聚苯乙烯的共聚物臂,其具有足够量的聚苯乙烯作为聚合物碎屑可完成。
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