Reduced gloss thermoplastic compositions and processes for...

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

C - Chemistry, Metallurgy

08

L

C08L 69/00 (2006.01) C08K 5/15 (2006.01) C08L 25/12 (2006.01) C08L 33/20 (2006.01) C08L 51/04 (2006.01) C08L 55/02 (2006.01)

Patent

CA 2089281

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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