Polymer thickened lubricating grease
    6.
    发明授权
    Polymer thickened lubricating grease 失效
    聚合物增稠润滑脂

    公开(公告)号:US5874391A

    公开(公告)日:1999-02-23

    申请号:US526175

    申请日:1995-09-11

    摘要: The present invention relates to a polymer thickener for lubricant grease compositions, wherein the thickener comprises a mixture of (1) a high molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .gtoreq.200,000 and (2) a low molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .ltoreq.100,000. The invention further relates to a lubricating grease composition comprising a lubricating oil and the above polymeric thickener, as well as a method for preparing said grease composition. Also, the invention relates to the use of such a polymer thickener in the preparation of lubricating grease compositions with improved oil bleeding characteristics at low temperature and improved noise characteristics and/or improved mechanical stability.

    摘要翻译: 本发明涉及一种用于润滑脂组合物的聚合物增稠剂,其中增稠剂包括(1)丙烯的重均分子量≥20,000的高分子量(共聚或均聚)聚合物和(2) )丙烯的低分子量(共聚或均聚)聚合物,其重均分子量为100,000。 本发明还涉及包含润滑油和上述聚合物增稠剂的润滑脂组合物,以及制备所述润滑脂组合物的方法。 此外,本发明涉及这种聚合物增稠剂在制备润滑脂组合物中的用途,该润滑脂组合物在低温下具有改进的油渗透特性和改善的噪音特性和/或改进的机械稳定性。