Lubricating oil composition
    5.
    发明授权
    Lubricating oil composition 有权
    润滑油组成

    公开(公告)号:US08030255B2

    公开(公告)日:2011-10-04

    申请号:US11757109

    申请日:2007-06-01

    Abstract: The present invention provides lubricating oil compositions having excellent anti-wear properties and anti-fatigue properties as well as excellent low temperature fluidity, particularly suitable for automatic transmissions and/or continuously variable transmissions, and internal combustion engines. The compositions comprises (A) a base oil with a kinematic viscosity at 100° C. of 1 to 8 mm2/s, a pour point of −15° C. or lower, an aniline point of 100° C. or higher, the saturates of the base oil containing 40 percent by mass or more of paraffins, 25 percent by mass or less of one ring naphthenes, and 35 percent by mass or less of two to six ring naphthenes, as the main component, and (B) 0.005 to 0.4 percent by mass of a metallic detergent, (C) 0.005 to 0.2 percent by mass in terms of nitrogen of a succinimide-type ashless dispersant, (D) 0.005 to 0.2 percent by mass in terms of phosphorus of a phosphorus-containing anti-wear agent, and (E) 0.01 to 20 percent by mass of a viscosity index improver with a weight average molecular weight (Mw) of 50,000 or greater, on the basis of the total amount of the composition.

    Abstract translation: 本发明提供具有优异的抗磨损性能和抗疲劳性能以及优异的低温流动性的润滑油组合物,特别适用于自动变速器和/或无级变速器和内燃机。 组合物包含(A)在100℃下的运动粘度为1至8mm 2 / s,倾点为-15℃或更低,苯胺点为100℃或更高的基础油, 含有40质量%以上的链烷烃,25质量%以下的环状环烷烃和35质量%以下的环状环烷烃作为主要成分的基础油的饱和物,(B)0.005 至0.4质量%的金属洗涤剂,(C)以琥珀酰亚胺型无灰分散剂的氮计为0.005〜0.2质量%,(D)磷含量为0.005〜0.2质量% 和(E)基于组合物的总量,重量平均分子量(Mw)为50,000以上的粘度指数改进剂为0.01〜20质量%。

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