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    • 4. 发明申请
    • LUBRICANT OIL COMPOSITION
    • 润滑油组成
    • US20120071374A1
    • 2012-03-22
    • US13375061
    • 2010-01-25
    • Akira YaguchiShigeki MatsuiTeppei Tsujimoto
    • Akira YaguchiShigeki MatsuiTeppei Tsujimoto
    • C10M145/14
    • C10M169/041C10M2203/1006C10M2203/1025C10M2205/022C10M2209/084C10N2220/022C10N2230/02C10N2230/68C10N2240/10C10M2205/024
    • A lubricant oil composition comprising: a lubricant base oil whose kinematic viscosity at 100° C. is 1 to 6 mm2/s, % Cp is not less than 70, and % CA is not more than 2; a first viscosity index improver in which the ratio A/B of a viscosity increasing effect A in the equation (1) to a viscosity increasing effect B in the equation (2) when added to the lubricant base oil is a value of not less than 4.5, and a PSSI is not more than 30; and a second viscosity index improver in which the ratio A/B when added to the lubricant base oil is a value less than 4.5: A=X−X0   (1) B=Y−Y0   (2) wherein A represents a viscosity increasing effect of the kinematic viscosity at 100° C., B represents a viscosity increasing effect of the HTHS viscosity at 150° C., X represents a kinematic viscosity at 100° C. of a mixture of the lubricant base oil with 3% by mass of the first or second viscosity index improver, X0 represents a kinematic viscosity at 100° C. of the lubricant base oil, Y represents an HTHS viscosity at 150° C. of a mixture of the lubricant base oil with 3% by mass of the first or second viscosity index improver, and Y0 represents an HTHS viscosity at 150° C. of the lubricant base oil.
    • 1.一种润滑油组合物,其特征在于,含有100℃下的运动粘度为1〜6mm 2 / s的润滑油基础油,Cp不小于70,%CA不大于2; 在添加到润滑油基础油中时,式(1)中的粘度增加效果A与式(2)中的粘度增加效果B的比A / B的值为不小于 4.5,PSSI不超过30; 和其中添加到润滑油基础油中的比率A / B小于4.5的第二粘度指数改进剂:A = X-X0(1)B = Y-Y0(2)其中A表示增粘效果 的运动粘度为100℃,B为150℃时的HTHS粘度的粘度增加效果,X表示润滑油基油与3质量%的混合物的混合物在100℃下的运动粘度 第一或第二粘度指数改进剂,X0表示润滑剂基油的100℃下的运动粘度,Y表示润滑油基油与3质量%第一油性混合物在150℃下的HTHS粘度 或第二粘度指数改进剂,Y0表示润滑剂基础油在150℃下的HTHS粘度。
    • 6. 发明申请
    • LUBRICANT COMPOSITION
    • 润滑剂组合物
    • US20110053815A1
    • 2011-03-03
    • US12812524
    • 2009-01-09
    • Shigeki MatsuiAkira Yaguchi
    • Shigeki MatsuiAkira Yaguchi
    • C10M145/14C10M139/06
    • C10M169/04C10M2203/1025C10M2207/289C10M2209/084C10M2215/102C10M2217/023C10M2217/028C10M2219/068C10N2220/021C10N2220/022C10N2220/024C10N2220/025C10N2220/031C10N2230/02C10N2230/54C10N2230/68C10N2240/10C10N2210/06
    • 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.
    • 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。