Oil compositions containing modified star polymers
    1.
    发明授权
    Oil compositions containing modified star polymers 失效
    含有改性星形聚合物的油组合物

    公开(公告)号:US5035820A

    公开(公告)日:1991-07-30

    申请号:US523517

    申请日:1990-05-15

    IPC分类号: C10M149/10

    摘要: Lubricating oil compositions which contain hydrogenated diene star polymers grafted with N-vinylimidazole exhibit improved engine performance when prepared by grafting the polymer in an oil mixture containing at least 6% by weight of the star polymer. The grafting is accomplished by contacting the polymer with from about 3.0 to about 5.5 wt % N-vinylimidazole when N-vinylimidazole is the sole reactant and from about 1.0 to about 5.0 wt % N-vinylimidazole when N-vinylimidazole is used in combination with N-vinylpyrrolidone.

    摘要翻译: 当通过将聚合物接枝在含有至少6重量%的星形聚合物的油混合物中制备时,含有用N-乙烯基咪唑接枝的氢化二烯星形聚合物的润滑油组合物表现出改善的发动机性能。 当N-乙烯基咪唑是唯一的反应物时,通过使聚合物与约3.0至约5.5重量%的N-乙烯基咪唑接触,并且当将N-乙烯基咪唑与N组合使用时,约1.0至约5.0重量%的N-乙烯基咪唑 乙烯基吡咯烷酮。

    Process for the preparation of oil-soluble hydrogenated modified
star-shaped polymers
    5.
    发明授权
    Process for the preparation of oil-soluble hydrogenated modified star-shaped polymers 失效
    油溶性氢化改性星形聚合物的制备方法

    公开(公告)号:US4557849A

    公开(公告)日:1985-12-10

    申请号:US630914

    申请日:1984-07-13

    CPC分类号: C08C19/44 C08C19/02

    摘要: A process for the preparation of an oil-soluble, star-shaped product having viscosity index-improving and dispersant properties, comprising modifying a hydrogenated star-shaped polymer wherein said arms are hydrogenated homopolymers and copolymers of conjugated dienes and mono-alkenyl arenes, and wherein the hydrogenated polymer is metallated with an organolithium compound in the presence of a metallation promoter, and subsequently reacted with a vinyl pyridine or a carbonyl group containing organic compound.

    摘要翻译: 一种制备具有粘度指数提高和分散剂性质的油溶性星形产品的方法,包括改性氢化星形聚合物,其中所述臂是氢化均聚物,共轭二烯和单烯基芳烃的共聚物,以及 其中氢化聚合物在金属化促进剂的存在下用有机锂化合物金属化,随后与乙烯基吡啶或含羰基的有机化合物反应。