Process for the preparation of ethylene copolymer compositions in the presence of an oligomerization catalyst
    4.
    发明申请
    Process for the preparation of ethylene copolymer compositions in the presence of an oligomerization catalyst 有权
    在低聚催化剂存在下制备乙烯共聚物组合物的方法

    公开(公告)号:US20130023631A1

    公开(公告)日:2013-01-24

    申请号:US13521717

    申请日:2011-01-20

    IPC分类号: C08F210/02 C08F2/34

    摘要: Process for the preparation of an ethylene copolymer composition having a polydispersity index Mw/Mn of from 3 to 100, comprising a) feeding ethylene to at least one polymerization reactor; b) performing in the at least one polymerization reactor an oligomerization of ethylene in the presence of an oligomerization catalyst component (C) to produce comonomer; c) performing simultaneously in the at least one polymerization reactor polymerization reactions in the presence of catalyst components (A) and (B) producing, respectively, a first and a second polyethylene fraction, wherein the weight average molecular weight Mw of the first polyethylene fraction produced by catalyst component (A) is less than the Mw of the second polyethylene fraction produced by catalyst component (B) and the comonomer incorporation ability of catalyst component (B) is higher than the comonomer incorporation ability of catalyst component (A); and d) withdrawing the ethylene copolymer composition from the polymerization reactor.

    摘要翻译: 制备多分散指数Mw / Mn为3至100的乙烯共聚物组合物的方法,包括:a)将乙烯进料至至少一个聚合反应器; b)在所述至少一个聚合反应器中在低聚催化剂组分(C)的存在下进行乙烯的低聚以产生共聚单体; c)在催化剂组分(A)和(B)的存在下在所述至少一个聚合反应器聚合反应中同时进行第一和第二聚乙烯级分的制备,其中第一聚乙烯级分的重均分子量Mw 由催化剂成分(A)制造的催化剂成分(B)的共聚单体引入能力低于催化剂成分(B)生成的第二聚乙烯馏分的Mw,催化剂成分(B)的共聚单体引入能力高于催化剂成分(A)的共聚单体引入能力。 和d)从聚合反应器中取出乙烯共聚物组合物。