POLYMETHACRYLATES AS HIGH VI VISCOSITY MODIFIERS

    公开(公告)号:EP3460028A1

    公开(公告)日:2019-03-27

    申请号:EP18187225.0

    申请日:2010-06-02

    摘要: A lubricating composition contains an oil of lubricating viscosity and 0.5 to 10 percent by weight of a poly(meth)acrylate viscosity modifier polymer comprising (i) 15 weight percent to 35 weight percent monomer units of methyl (meth)acrylate, (ii) 0 to 10 weight percent monomer units of one or more C 2 -C 6 alkyl (meth)acrylates, (iii) 50 to 85 weight percent monomer units of one or more C 8 -C 30 alkyl (meth)acrylates, and (iv) 0 to 10 weight percent monomer units of one or more nitrogen-containing monomers. Such a lubricating composition exhibits a high viscosity index and may impart improved fuel economy to an internal combustion engine.

    METHOD OF FRICTION CONTROL
    10.
    发明公开
    METHOD OF FRICTION CONTROL 审中-公开
    摩擦控制方法

    公开(公告)号:EP3052599A1

    公开(公告)日:2016-08-10

    申请号:EP14784574.7

    申请日:2014-09-30

    摘要: This invention relates to a method of lubricating an internal combustion engine comprising at least one of a crankcase, a gear and a wet-clutch, said method comprising supplying to said crankcase, gear, and wet-clutch a lubricating composition containing: (a) an oil of lubricating viscosity; and (b) a friction modifying additive which is the reaction product of a hydrocarbyl-substituted succinic anhydride and an acid functionalized amine compound.

    摘要翻译: 本发明涉及一种润滑包括曲轴箱,齿轮和湿式离合器中的至少一个的内燃机的方法,所述方法包括向所述曲轴箱,齿轮和湿式离合器供给润滑组合物,所述润滑组合物含有:(a) 润滑粘度的油; 和(b)摩擦改性添加剂,其是烃基取代的琥珀酸酐和酸官能化的胺化合物的反应产物。