ZIEGLER-NATTA CATALYST SYSTEMS COMPRISING A 1,2-PHENYLENEDIOATE AS INTERNAL DONOR AND PROCESS FOR PREPARING THE SAME

摘要

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.;

主权项

1. 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)wherein R1-R6 groups are equal or different from each other and each of R1-R6 are selected from a group comprising of hydrogen, halogen, C1-C20 linear or branched alkyl group optionally linked with cyclic rings, C6-C14 aryl groups, C3-C15 cycloalkyl groups, C1-C20 alkoxy group, a heteroatom, arylalkyl or alkylaryl groups and combinations thereof, provided that R1 and R2 together are not comprised of methyl group, aryl group or alkoxy group.