Patent ID: 7973115

Claim:
An active catalyst system comprising: a) a metallic component selected from formulas IVa to IVf resulting from complexing the ligand selected from formulas Ia to If with a metallic salt MY n ; wherein M is a metal group 3 to 10 of the Periodic Table, Y is the same or different and is a halogen, alcoholate, carboxylate or substituted or unsubstituted hydrocarbyl and n is the valence of M; wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 and R 11 are the same or different and are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl, or inert functional group, with the restriction that R 4 and R 9 are not simultaneously OH, and wherein two or more substituents can be linked together to form further ring or rings, wherein Z and Z 1 can be in position 2, 3 or 4 on the aromatic ring, are the same and are O, wherein X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , X 7 and X 8 are the same or different and are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl, aromatic, or inert functional group, and wherein i is an integer of from 0 to 10 and j is an integer of from 1 to 15; and b) an activating agent having an ionizing action.