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    • 117. 发明公开
    • Star shaped polymer, its preparation and lubricating compositions containing it
    • SternförmigesPolymer,seine Herstellung und diess聚合物enthaltendeSchmierölzusammensetzung。
    • EP0425027A2
    • 1991-05-02
    • EP90202781.2
    • 1990-10-17
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    • Rhodes, Robert Barnett
    • C08F297/04C10M143/12
    • C10M143/12C08F297/046C10M143/10C10M2205/04C10M2205/06
    • The invention provides star-shaped polymers comprising a plurality of arms of a block copolymer containing a single monoalkenyl aromatic hydrocarbon block and a single conjugated diolefin block having hydrogenated conjugated diene monomer units and a poly(polyalkenyl coupling agent) nucleus, said polymer containing from 6 to 13 total arms as determined by gel permeation chromatography using monoalkenyl aromatic equivalent molecular weights, the monoalkenyl aromatic equivalent peak molecular weight of the monoalkenyl aromatic hydrocarbon polymer block being within the range from 600 to 120,000 and the peak molecular weight of the conjugated diolefin block being within the range from 8,000 to 180,000 with the proviso that the weight ratio of monoalkenyl aromatic hydrocarbon to conjugated diolefin in the polymer be within the range from 0.05:1 to 1.5:1; a process for their preparation, and lubricating oil compositions containing such polymers.
    • 本发明提供了包含多个嵌段共聚物的臂的星形聚合物,其含有单个单烯基芳族烃嵌段和具有氢化共轭二烯单体单元和聚(多链烯基偶联剂)核的单一共轭二烯嵌段,所述聚合物含有6 通过使用单链烯基芳族当量分子量的凝胶渗透色谱测定的13个总臂,单链烯基芳烃聚合物嵌段的单链烯基芳族当量峰分子量在600至120,000的范围内,共轭二烯烃嵌段的峰分子量为 在8,000至180,000的范围内,条件是聚合物中单链烯基芳烃与共轭二烯烃的重量比在0.05:1至1.5:1的范围内; 其制备方法和含有这种聚合物的润滑油组合物。