Method for preparing asymmetric radial copolymers having four fi

Details Method for preparing asymmetric radial copolymers having four fi Method for preparing asymmetric radial copolymers having four fi

1993-11-09

1994-11-29

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525105, 525314, C08L 5302, C08F29704

Patent

active

053691750

ABSTRACT:
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.

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