LUBRICANT COMPOSITION
    36.
    发明申请
    LUBRICANT COMPOSITION 有权
    润滑剂组合物

    公开(公告)号:US20110053815A1

    公开(公告)日:2011-03-03

    申请号:US12812524

    申请日:2009-01-09

    IPC分类号: C10M145/14 C10M139/06

    摘要: The invention provides a lubricating oil composition comprising: a lubricating base oil having a kinematic viscosity at 100° C. of 1-10 mm2/s, a % Cp of 70 or greater and a % CA of not greater than 2; a first viscosity index improver of 0.01-10% by mass, based on the total weight of the composition, wherein the first viscosity index improver is a poly(meth)acrylate having a weight-average molecular weight of not greater than 100,000; and a second viscosity index improver of 0.01-50% by mass, based on the total weight of the composition, wherein the second viscosity index improver is a polymer having a weight-average molecular weight of 100,000 or greater and containing a structural unit represented by the following formula (1) in a proportion of 0.5-70 mol %, the composition having a kinematic viscosity at 100° C. of 4-12 mm2/s and a viscosity index of 140-300. wherein R1 represents hydrogen or a methyl group and R2 represents a C16 or greater straight-chain or branched hydrocarbon, or an oxygen- and/or nitrogen-containing C16 or greater straight-chain or branched organic group.

    摘要翻译: 本发明提供一种润滑油组合物,其包含:润滑油基础油,其100℃下的运动粘度为1-10mm 2 / s,%Cp为70以上,%CA为2以下; 基于组合物的总重量,第一粘度指数改进剂为0.01-10质量%,其中第一粘度指数改进剂是重均分子量不大于100,000的聚(甲基)丙烯酸酯; 和第二粘度指数改进剂,基于组合物的总重量为0.01-50质量%,其中第二粘度指数改进剂是重均分子量为100,000或更大的聚合物,并且含有由 下述式(1)的比例为0.5-70摩尔%,该组合物在100℃下的运动粘度为4-12mm 2 / s,粘度指数为140-300。 其中R1表示氢或甲基,R2表示C16或更大的直链或支链烃,或含氧和/或含氮C16或更大的直链或支链有机基团。