Patent ID: 6380329
Filing Date: 2002-04-30
Classification: B01J,C08F

Abstract:
A polymerization process comprising contacting in a reaction zone under polymerization reaction conditions:a) an olefin monomer and b) a catalyst system comprising cyclodisilizane complexes of Group IV metals wherein said metal is selected from the group consisting of titanium, zirconium and hafnium; wherein said cyclodisilizane ligands further comprise substituents selected from the group consisting of alkyl, aryl, heteroalkyls and heteroaryls wherein the heteroatom of said heteroalkyls and heteroaryls is selected from the group consisting of oxygen, nitrogen, and silicon; and wherein said cyclodisilizane complexes of Group IV metal further comprise additional ligands selected from the group consisting of halides, pseudo halides, alkyls, and aryls; and c) a cocatalyst selected from the group consisting of aluminoxanes, fluoro organic boron compounds and mixtures thereof; and wherein a polymer is recovered.