Polymer thickened lubricanta for high operating temperatures
    2.
    发明公开
    Polymer thickened lubricanta for high operating temperatures 失效
    Polymerverdicktes Schmiermittelfürhohe Betriebstemperaturen

    公开(公告)号:EP0795597A1

    公开(公告)日:1997-09-17

    申请号:EP97200671.2

    申请日:1997-03-06

    Abstract: The present invention relates to a polymer thickened lubricating grease composition with improved resistance to high operating temperatures (constant and/or peak), comprising

    1) a lubricating base oil
    2) a polymeric thickener, comprising

    2a) a high melting point component comprising at least one polymer with a melting point (ASTM D-2117) of more than 200°C, especially more than 225°C, and
    2b) a low molecular weight component comprising a (co- or homo-) polymer of propylene with a weight average molecular weight

    3) optionally further additives known per se.

    The grease preferably further comprises

    2c) a high molecular weight component comprising a (co- or homo-) polymer of propylene with a weight average molecular weight >200.000.

    The grease preferably has a dropping point of >150°C, more preferably 180-220°C, and is suitable for use in high operating temperature applications.

    Abstract translation: 本发明涉及具有改善的对高操作温度(恒定和/或峰值)的耐受性的聚合物增稠的润滑脂组合物,其包含1)润滑基础油2)聚合物增稠剂,其包含2a)至少包含至少 具有超过200℃,特别是大于225℃的熔点(ASTM D-2117)的一种聚合物和2b)包含丙烯(共聚或均聚)聚合物的重均分子量的低分子量组分 分子量<100.000,和3)任选的其它本身已知的添加剂。 润滑脂优选进一步包含2c)高分子量组分,其包含重均分子量> 200.000的丙烯聚合物(共聚或均聚)。 润滑脂的滴点优选> 150℃,更优选180-220℃,适用于高工作温度。

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