Reduced gloss thermoplastic compositions and processes for makin

Details Reduced gloss thermoplastic compositions and processes for makin Reduced gloss thermoplastic compositions and processes for makin

1993-02-23

1996-12-03

Yoon, Tae

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

Synthetic resins

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

525 67, 525 71, 525107, 525217, 525238, 5253291, 523406, 524128, C08L 6300, C08L 5104, C08L 3318, C08L 5502

Patent

active

055809243

ABSTRACT:
Reduced gloss polycarbonate graft polymer blends are provided by a process which involves compounding styrene-acrylonitrile copolymer in the presence of an electrophilic reagent and preferably an acid to form gels, and then compounding the resultant gels with polycarbonate, a styrene-acrylonitrile copolymer and ABS graft polymer to form reduced gloss PC/ABS/SAN composition. The process limits side reactions during gel formation by preparing the gels first and then compounding the gels with the other resin materials. The blends are useful as molding resins and the gelled acrylonitrile polymer is useful as a gloss reducing additive.

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