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    • 1. 发明申请
    • CONJUGATED DIENE POLYMERISATION
    • 连接二烯聚合
    • WO1993005083A1
    • 1993-03-18
    • PCT/GB1992001645
    • 1992-09-09
    • ENICHEM ELASTOMERS LTD.ANSELL, Peter, JohnWILLIAMS, Hugh, David
    • ENICHEM ELASTOMERS LTD.
    • C08F36/04
    • C08F36/04C08F4/58
    • A process for the polymerisation of one or more conjugated dienes by means of a rare earth based catalyst in which the catalyst is formed by bringing together in liquid hydrocarbon medium in the presence of a small portion of conjugated diene: a) a rare earth salt, b) an organo aluminium and c) a silicon halide or organosilicon halide and aging the catalyst before contact with the conjugated diene(s) to be polymerised. This catalyst formation procedure offers the possibility of producing a diene polymer of high cis content with a narrower molecular weight distribution and/or smaller high molecular weight fraction which is reflected in improved processing characteristics and reduced viscosity in styrene.
    • 一种通过稀土类催化剂聚合一种或多种共轭二烯的方法,其中通过在少量共轭二烯的存在下将液体烃介质合并而形成催化剂:a)稀土盐, b)有机铝和c)卤化硅或有机硅卤化物,并在与待聚合的共轭二烯接触之前使催化剂老化。 该催化剂形成方法提供了生产具有更窄分子量分布和/或较小高分子量分数的高顺式含量的二烯聚合物的可能性,其反映在改进的加工特性和苯乙烯中降低的粘度。