Patent ID: 6534605
Filing Date: 2003-03-18
Classification: C08F

Abstract:
A living polymerisation process for the preparation of vinylic polymers from the corresponding vinylic monomers which process comprises the step of reacting a vinylic monomer in the presence of a catalyst system comprising a) a compound of general formula (1)where M represents aluminum, cobalt, copper, titanium or a lanthanide series metal; B1, B2, B3 and B4 are chosen from nitrogen, oxygen, sulphur or phosphorus containing moieties wherein each of said nitrogen, oxygen, sulphur or phosphorus is linked to at least one carbon atom of an organic group and to M; X1 represents alkyl, H, halogen, alkoxy, thiol, aryloxy, or ester, b) a metal complex of general formula (II) where A represents nickel, iron, cobalt, chromium, manganese, titanium, zirconium, vanadium or a rare earth metal; L1, L2, L3 and L4 are ligands and c) a Lewis acid of general formula (III) wherein at least one of W, Y or Z is capable of forming a co-ordination bond with A and the others of W, Y and Z are bulky groups; D represents aluminum, magnesium, zinc or boron.