Method for preparing asymmetric radial copolymers

Details Method for preparing asymmetric radial copolymers Method for preparing asymmetric radial copolymers

C - Chemistry, Metallurgy

08

F

400/2002, 400/20

C08F 297/00 (2006.01) C08C 19/30 (2006.01) C08C 19/44 (2006.01) C08G 81/02 (2006.01)

Patent

CA 1335614

A method for preparing asymmetric radial polymers wherein the different polymeric arms are contacted sequentially with a coupling agent. The method narrows the relative arm distribution of the several asymmetric radial polymers produced and significantly increases the amount of total product having the desired ratio of polymeric arms. Any coupling agent known in the prior art to be useful in the production of asymmetric radial polymers may be used in the method of this invention but coupling agents having from three to about twelve functional groups are most effective.

581098

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