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    • 23. 发明授权
    • Process for the production of ethylene-propylene elastomeric copolymers
    • 制备乙烯 - 丙烯弹性体共聚物的方法
    • US5804614A
    • 1998-09-08
    • US714398
    • 1996-09-16
    • Tiziano Tanaglia
    • Tiziano Tanaglia
    • C08F4/654C08F2/14C08F2/18C08F2/44C08F4/60C08F4/659C08F4/68C08F4/685C08F210/00C08F210/06C08F210/16C08F210/18C08K9/02
    • C08F210/16Y10S526/904
    • Process for the preparation in liquid phase of copolymers of ethylene with propylene and optionally another diene, in the presence of a catalyst selected from (a) Titanium salt supported on magnesium salt and (b) compound of Vanadium soluble in hydrocarbon solvents either supported on an inert material or prepolymerized, and a co-catalyst essentially consisting of an organic compound of Aluminium, and a possible chlorinated activator, characterized in that: 1) when the polymerization is almost complete, a solid material insoluble in the reaction environment and having an average diameter of between 0.001 and 200 microns is added to the reaction mixture; 2) the suspension of polymer and solid material are kept in contact for a sufficient time to obtain perfectly free-flowing polymeric particles; 3) the perfectly free-flowing polymeric particles of step (2) are recovered.
    • 在乙烯与丙烯和任选的另一种二烯的共聚物的液相中在催化剂存在下制备方法,所述催化剂选自(a)负载在镁盐上的钛盐和(b)可溶于烃溶剂的钒化合物, 惰性材料或预聚合物,以及基本上由铝的有机化合物组成的助催化剂和可能的氯化活化剂,其特征在于:1)当聚合几乎完成时,不溶于反应环境并具有平均值的固体材料 将直径为0.001至200微米的直径加入到反应混合物中; 2)聚合物和固体材料的悬浮液保持接触足够的时间以获得完全自由流动的聚合物颗粒; 3)回收步骤(2)的完全自由流动的聚合物颗粒。