Patent ID: 7651971

Claim:
A catalyst for the polymerization and co-polymerization of an olefin, said catalyst comprising any combination of two neutral metal compounds, the combination having the general formula II, III, or IV: wherein: M is Ni, Pt, or Pd; A is a π-allyl, a substituted π-allyl, a π-benzyl or a substituted π-benzyl; X is N or P; Y is O, CH 2 , or S; L is N or a structure that is capable of forming a neutral two electron donor ligand; L 1 is a neutral monodentate ligand capable of being displaced by said olefin and L 2 is a monoanionic monodentate ligand, or L 1 and L 2 taken together are a monoanionic bidentate ligand, provided that said monoanionic monodentate ligand or said monoanionic bidentate ligand is capable of adding to said olefin; B is a bridge connecting covalently an unsaturated carbon and L; and R 1 , R 2 , and R 3 are each independently hydrogen, hydrocarbyl, or substituted hydrocarbyl bearing functional group.