Patent ID: 6891005

Claim:
An olefin polymerization process comprising contacting one or more olefin monomers under gas phase polymerization conditions with a catalyst composition comprising a metal complex corresponding to the following formula: wherein: M is titanium, zirconium, or hafnium in the +4, +3, or +2 oxidation state; Y 1 and Y 2 are independently an anionic, cyclic or non-cyclic, ρ-bonded group, NR 1 , PR 1 ; NR 1 2 or PR 1 2 ; Z is boron or aluminum; Q is a neutral, anionic or dianionic ligand group depending on the oxidation state of M; j is 1, 2 or 3 depending on the oxidation state of M and the electronic nature of Q; T independently each occurrence is; wherein R 1 is independently each occurrence hydrogen, a hydrocarbyl group, a tri(hydrocarbyl)silyl group, or a tri(hydrocarbyl)silyhydrocarbyl group, said R 1 groups containing up to 20 atoms not counting hydrogen; R 5 is R 1 or N(R 1 ) 2 ; and two R 1 groups together or one or more R 1 groups together with R 5 may optionally be joined to form a ring structure.