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公开(公告)号:US20080085847A1
公开(公告)日:2008-04-10
申请号:US11545703
申请日:2006-10-10
申请人: Kwok-Leung Tse , Jacob Emert , Jai G. Bansal
发明人: Kwok-Leung Tse , Jacob Emert , Jai G. Bansal
IPC分类号: C10L1/16
CPC分类号: C10M143/00 , C10M143/08 , C10M2205/022 , C10N2220/021 , C10N2220/03 , C10N2230/02 , C10M2205/028 , C10M2205/06
摘要: Lubricating oil compositions and viscosity index (VI) improver concentrates containing combinations of first polymers that are amorphous ethylene α-olefin copolymers; and second polymers that are star polymers, the arms of which are derived from diene, and optionally vinyl aromatic hydrocarbon monomer, wherein the star polymers have a Shear Stability Index (SSI) of from about 1% to about 35% (30 cycle).
摘要翻译: 润滑油组合物和粘度指数(VI)改进剂浓缩物,其含有作为无定形乙烯α-烯烃共聚物的第一聚合物的组合; 和作为星形聚合物的第二聚合物,其臂衍生自二烯,以及任选的乙烯基芳族烃单体,其中星形聚合物具有约1%至约35%(30个循环)的剪切稳定性指数(SSI)。