Patent ID: 11872548
Assignee: VERSALIS S.P.A.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A catalytic system for the (co)polymerization of conjugated diener comprising:
a) at least one oxo-nitrogenated iron complex having general formula (I) or (II):, wherein:
each of R1 and R2;
R3 is an unsubstituted phenyl group; and
each of X1 and X2 is a chlorine atom; and
b) at least one co-catalyst selected from organic compounds of an element M′ different from carbon, said element M′ being selected from elements belonging to groups 2, 12, 13, or 14 of the Periodic Table of the Elements.