Lubricating oil compositions
    1.
    发明申请
    Lubricating oil compositions 审中-公开
    润滑油组成

    公开(公告)号:US20080085847A1

    公开(公告)日:2008-04-10

    申请号:US11545703

    申请日:2006-10-10

    IPC分类号: C10L1/16

    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)。