Patent ID: 8399582

Claim:
An active catalyst system comprising: a metallic complex of formula I: wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl having from 1 to 20 carbon atoms, or inert functional group and two or more of those groups can themselves be linked together to form further ring or rings; M is a metal Group 3 to 10 of the Periodic Table; Y is O or NR*, R* being selected from alkyl or aryl having from 1 to 12 carbon atoms; each X is the same or different and is selected from halogen, substituted or unsubstituted hydrocarbyl having from 1 to 20 carbon atoms, substituted or unsubstituted aryloxy or alkoxy; m is zero or an integer from 1 to 3; and (n+1) is the valence of M; an activating agent selected from an aluminum or boron-containing complex; and optionally a scavenger, a transfer agent or combinations thereof.