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    • 4. 发明公开
    • 폴리에스테르 분산제를 포함하는 윤활 조성물
    • 包含聚酯分散剂的润滑组合物
    • KR1020070084349A
    • 2007-08-24
    • KR1020077011309
    • 2005-11-07
    • 크로다 인터내셔날 피엘씨
    • 올드필드,앤드류,시몬
    • C10M145/22C10M161/00
    • F16H57/04C10L1/1983C10L10/06C10L10/08C10L10/18C10M145/22C10M161/00C10M2207/288C10M2207/30C10M2209/102C10M2209/103C10M2215/08C10M2217/044C10N2230/041C10N2230/06C10N2230/10C10N2230/36
    • An automotive lubricant composition comprising a base fluid and an ashless polymeric dispersant is claimed. The ashless polymeric dispersant has a number average molecular weight of between 500 and 10,000 and comprises a polar tall group which itself comprises a polymeric backbone of 2 to 30 monomeric repeat units, each repeat unit comprising a hydrocarbon chain functionalised by the presence of at least one electronegative element or moiety, the tail group being linked to a polar head group which comprises a polar moiety selected from at least one of acid, ester, amide or alcohol moieties. The dispersant has good dispersancy properties, when used as a sole dispersant or in combination with other dispersants. It provides enhanced seal resistance and has good oxidative stability in automotive applications as compared to current commercial products. Furthermore the low temperature viscosity of the automotive lubricant composition with the designed dispersant is superior to that of a composition with current commercial dispersants and the designed dispersant does not react with ZDDP and reduce the antiwear capabilities of ZDDP.
    • 要求保护包含基础流体和无灰分子聚合物分散剂的汽车润滑剂组合物。 无灰分散聚合物分散剂的数均分子量为500至10,000,并且包含极性高的基团,其本身包含2至30个单体重复单元的聚合物主链,每个重复单元包含通过存在至少一个 电负性元件或部分,尾基团连接到极性头基团,其包含选自酸,酯,酰胺或醇部分中的至少一个的极性部分。 当用作单独的分散剂或与其它分散剂组合时,分散剂具有良好的分散性。 与目前的商业产品相比,它在汽车应用中提供了更强的密封性,并且具有良好的氧化稳定性。 此外,具有设计分散剂的汽车润滑剂组合物的低温粘度优于当前商业分散剂的组合物的低温粘度,并且设计的分散剂不与ZDDP反应并降低ZDDP的抗磨性能。