Patent ID: 7087690
Filing Date: 2006-08-08
Classification: B01J,C07B,C07D,C07F,C08F,C40B

Abstract:
1. A process for the stereospecific polymerization of an alpha-olefin, comprising polymerizing at least one alpha-olefin in the presence of a catalyst composition, optionally in the presence of one or more activators, under polymerization conditions, wherein the catalyst composition is formed from a mixture which comprises: (1) a ligand characterized by the following general formula: wherein R 1 is characterized by the general formula: wherein E is either carbon or nitrogen, Q Q″ T is a bridging group selected group consisting of —CR J″ is selected from the group consisting of heteroaryl and substituted heteroaryl; (2) a metal precursor compound characterized by the general formula M(L) (3) optionally, at least one activator.