Polypropylene-graft-unsaturated polyester compositions and proce

Details Polypropylene-graft-unsaturated polyester compositions and proce Polypropylene-graft-unsaturated polyester compositions and proce

1992-12-31

1994-08-30

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...

528306, C08L 6706, C08G 6352, C08F25502

Patent

active

053428927

ABSTRACT:
A propylene-graft-unsaturated polyester is disclosed comprising the reaction product of a polypropylene, an unsaturated polyester and a free radical initiator. The polypropylene-graft-unsaturated polyester is generally prepared by reacting at elevated temperatures using a peroxide. The polypropylene-graft-unsaturated polyester is very useful as a compatibilizing agent in blends of polyester and ethylene-propylene rubber to improve the impact strength of the polyester.

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