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    • 71. 发明授权
    • Process for producing styrenic polymer and copolymer
    • 生产苯乙烯聚合物和共聚物的方法
    • US5378777A
    • 1995-01-03
    • US110766
    • 1993-08-23
    • Masami WatanabeShuji Machida
    • Masami WatanabeShuji Machida
    • C08F4/60C08F4/643C08F12/04C08F12/14
    • C08F12/04C08F12/08C08F12/12C08F2420/04
    • There is disclosed a process for producing a styrenic polymer or copolymer each having syndiotactic configuration which comprises polymerizing a styrenic monomer represented by the general formula (I) ##STR1## such as phenylstyrene and trimethylsilylstyrene, or copolymerizing at least two styrenic monomers of the formula (I) or at least one styrenic monomer of the formula (I) with at least one styrenic monomer other than the styrenic monomer of the formula (I) in the presence of a catalyst comprising as principal ingredients(A) a transition metal compound derived from a group IVB metal of the Periodic Table such as pentamethylcyclopentadienyltrimethyltitanium and (B) a compound producing an ionic complex by the reaction with the above transition metal compound such as tri(n-butyl)ammonium tetra(pentafluorophenyl)borate. The aforementioned process enables efficient production of a styrenic polymer or copolymer excellent in heat resistance and mechanical strength.
    • 公开了具有间同立构构型的苯乙烯类聚合物或共聚物的制造方法,该方法包括将由通式(I)所示的甲硅烷基苯乙烯表示的苯乙烯类单体聚合,或共聚至少两种式(I)的苯乙烯类单体或至少一种苯乙烯 式(I)的单体与除了式(I)的苯乙烯类单体之外的至少一种苯乙烯单体在含有作为主要成分的催化剂存在下(A)衍生自周期表IVB族金属的过渡金属化合物 表格如五甲基环戊二烯基三甲基钛和(B)通过与上述过渡金属化合物如四(五氟苯基)硼酸三(正丁基)铵的反应产生离子络合物的化合物。 上述方法能够有效地制备耐热性和机械强度优异的苯乙烯聚合物或共聚物。