Patent ID: 7285609

Claim:
A polymerization method comprising contacting one or more polar monomers and one or more olefin monomers with a catalyst system comprising: 1) optionally, an activator, and 2) a catalyst composition represented by the formula: M is selected from groups 3-11 of the periodic table; E is nitrogen or phosphorus; Ar 0 is arene; R 1 -R 4 are, each independently, selected from hydrogen, hydrocarbyl, substituted hydrocarbyl or functional group, provided however that R 3 and R 4 do not form a naphthyl ring; L 1 represents a formal anionic ligand, L 2 represents a formal neutral ligand, a is an integer greater than or equal to 1; b is an integer greater than or equal to 0; and c is an integer greater than or equal to 1.