| abstract |
An ionic catalyst system for polymerizing monomers comprising a reaction product of a Group 4 transition metal compounds containing a single cyclopentadienyl ligand and a heteroatom contacting group and a non-coordinating anion precursor, and a Group 13 element organo compound additive. The catalyst system described, employing the organoadditive, results in a catalyst of enhanced productivity for the polymerization of olefins. Said catalyst system and additive may optionally be placed on an inert support media and prepolymerized if desired. The catalyst system may be used to polymerize monomers under high pressure, solution, liquid, bulk, slurry or gas phase polymerization conditions. |