High Viscosity Lubricant Compositions Meeting Low Temperature Performance Requirements
    110.
    发明申请
    High Viscosity Lubricant Compositions Meeting Low Temperature Performance Requirements 有权
    高粘度润滑油组合物满足低温性能要求

    公开(公告)号:US20120289445A1

    公开(公告)日:2012-11-15

    申请号:US13414834

    申请日:2012-03-08

    Abstract: A lubricant composition characterized as having a viscosity of less than about 150,000 cP at −40° C., a kinematic viscosity of less than about 150,000 cSt at −40° C., and a kinematic viscosity of at least about 18.5 cSt at 100° C. for use in association with a device involving metal to metal contact of moving parts comprising: (a) base-stock comprising (i) at least one relatively low viscosity polyalphaolefin, (ii) at least one ester, and at least one Group III base oil; (b) viscosity improver comprising (i) at least one relatively high viscosity polyalphaolefin, and (ii) a least one olefin copolymer; (c) a performance additive comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used; (d) at least one pour-point depressant; and, optionally, (e) at least one antifoam agent.

    Abstract translation: 一种润滑剂组合物,其特征在于在-40℃具有小于约150,000cP的粘度,在-40℃下的运动粘度小于约150,000cSt,在100℃下的运动粘度至少为约18.5cSt 用于与涉及金属与金属接触的移动部件的装置相关联,包括:(a)基础原料,其包含(i)至少一种相对低粘度的聚α-烯烃,(ii)至少一种酯和至少一种基团 III基础油; (b)粘度改进剂,其包含(i)至少一种相对高粘度的聚α-烯烃,和(ii)至少一种烯烃共聚物; (c)性能添加剂,其包含至少一种添加剂,其有效地改善润滑剂的至少一种性质和/或其中使用润滑剂的设备的性能; (d)至少一种倾点下降剂; 和(e)至少一种消泡剂。

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