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

Claim 6:
7. The catalytic system for the (co)polymerization of conjugated dienes according to claim 1, wherein said co-catalyst (b) is selected from (b3) compounds or mixtures of organometallic compounds of said element M′ different from carbon able to react with the oxo-nitrogenated iron complex having general formula (I), extracting from this a σ-linked substituent X1 or X2, to form on the one hand at least one neutral compound, and on the other hand an ionic compound consisting of a cation containing the metal (Fe) coordinated by the ligand, and an organic non-coordinating anion containing the metal M′, whose negative charge is delocalized on a multicentric structure.