Polymerisation of conjugated dienes

Details Polymerisation of conjugated dienes Polymerisation of conjugated dienes

C - Chemistry, Metallurgy

08

F

402/419, 402/446

C08F 36/04 (2006.01) C08F 4/52 (2006.01)

Patent

CA 1221794

Abstract The invention relates to a method of polymerising one or more conjugated diene monomers to a polymer having an exceptionally high cis content employing a three component catalyst comprising (a) a rare earth compound, (b) an organo magnesium compound and (c) a Lewis acid, in which a particular order of component addition is used. Under optimum conditions it is possible to obtain nearly 100% conversion to polymers of 98% or more cis content at very low concentrations of rare earth compound with respect to monomer.

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