A catalyst composition for use as precursor for Ziegler-Natta catalyst system, said catalyst composition comprising a combination of magnesium moiety, titanium moiety and an internal donor containing at least one 1,2-phenylenedioate compound of structure (A). Also, the present invention provides a process for preparing the aforesaid catalyst composition. Further, the present invention provides a Ziegler-Natta catalyst system incorporating the aforesaid catalyst composition and a method for polymerizing and/or copolymerizing olefins using the Ziegler-Natta catalyst system.
一种用作Ziegler-Natta
催化剂体系前体的
催化剂组成物,该
催化剂组成物包括
镁基团、
钛基团和至少含有一个1,2-
苯二
甲酸酯化合物(A)结构的内部给体的组合。此外,本发明提供了制备上述
催化剂组合物的方法。此外,本发明提供了一种包含上述
催化剂组合物的Ziegler-Natta
催化剂体系以及使用Ziegler-Natta
催化剂体系聚合和/或共聚
烯烃的方法。