Viscosity index improvers for lubricating oil compositions
    5.
    发明授权
    Viscosity index improvers for lubricating oil compositions 有权
    润滑油组合物的粘度指数改进剂

    公开(公告)号:US07163913B2

    公开(公告)日:2007-01-16

    申请号:US10611231

    申请日:2003-07-01

    IPC分类号: C10M143/00 C08F36/00

    摘要: A polymer suitable for use as a viscosity index improver for lubricating oil compositions, which is at least one, at least partially hydrogenated linear or star-shaped random copolymer of isoprene and butadiene, in which at least 70 wt. % of the butadiene is incorporated into the polymer as 1,4 units and the weight ratio of isoprene addition product to butadiene addition product in the copolymer is in a range of from about 90:10 to about 70:30.

    摘要翻译: 适合用作润滑油组合物的粘度指数改进剂的聚合物,其是至少一种至少部分氢化的异戊二烯和丁二烯的直链或星形无规共聚物,其中至少70wt。 丁二烯的%以1,4单元引入聚合物中,并且共聚物中异戊二烯加成产物与丁二烯加成产物的重量比在约90:10至约70:30的范围内。