Patent ID: 7365039
Filing Date: 2008-04-29
Classification: C08F

Abstract:
1. A catalyst composition comprising: a catalyst compound selected from the group consisting of Group 4 metal complexes containing one or more ligands that are π-bonded to the transition metal, and metal complexes of the formula, wherein R T is a divalent bridging group of from 1 to 20 atoms not counting hydrogen, R M is the Group 4 metal, X x is a number from 0 to 5 indicating the number of such X bonds, optional bonds and electron donative interactions are represented by lines, dotted lines and arrows respectively; and an activator capable of converting said catalyst compound into an active catalyst for addition polymerization; optionally a carrier; optionally a liquid diluent, and a hydroxycarboxylate metal salt additive corresponding to the formula: wherein R