Star polymers and process for the preparation thereof

Details Star polymers and process for the preparation thereof Star polymers and process for the preparation thereof

C - Chemistry, Metallurgy

08

F

400/2002

C08F 297/04 (2006.01) C08C 19/44 (2006.01) C08G 81/02 (2006.01)

Patent

CA 1057889

ABSTRACT OF THE DISCLOSURE Disclosed is a series of star polymer products having at least three polymeric arms which radiate from a nucleus having at least two molecules of a linking compound. The poly- meric arms may be copolymers of conjugated dienes and monovinyl aromatic compounds and/or homopolymers of either monomer. A novel process for the preparation of the polymer products in- cludes the steps of forming the polymeric arms with an organo- metallic initiator to form polymers terminated by an active chain end and thereafter forming a nucleus with the simultaneous linking of the active chain ends thereto. The nucleus is formed from at least two molecules of a linking compound each having at least two functional groups.

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