US 11,872,548 B2
Oxo-nitrogenated iron complex, catalytic system comprising said oxo-nitrogenated iron complex and process for the (co)polymerization of conjugated dienes
Guido Pampaloni, Pontedera (IT); Anna Sommazzi, Novara (IT); Giovanni Ricci, Parma (IT); Francesco Masi, S. Angelo Lodigiano (IT); and Giuseppe Leone, Milan (IT)
Assigned to Versalis S.p.A., San Donato Milanese (IT)
Filed by Versalis S.p.A., San Donato Milanese (IT)
Filed on Mar. 17, 2021, as Appl. No. 17/204,570.
Application 17/204,570 is a division of application No. 16/300,597, abandoned, previously published as PCT/IB2017/053142, filed on May 29, 2017.
Claims priority of application No. 102016000055704 (IT), filed on May 30, 2016.
Prior Publication US 2021/0245145 A1, Aug. 12, 2021
Int. Cl. C07F 15/06 (2006.01); B01J 31/20 (2006.01); C08F 4/52 (2006.01); C08F 4/70 (2006.01); C08F 36/06 (2006.01); C08F 36/08 (2006.01)
CPC B01J 31/20 (2013.01) [C08F 4/52 (2013.01); C08F 4/7008 (2013.01); C08F 4/7083 (2013.01); C08F 36/06 (2013.01); C08F 36/08 (2013.01); B01J 2531/31 (2013.01); B01J 2531/842 (2013.01); B01J 2531/847 (2013.01)] 11 Claims
OG exemplary drawing
 
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):

OG Complex Work Unit Chemistry
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.