Chlorinated polyvinyl chloride/polycarbonate blend

Details Chlorinated polyvinyl chloride/polycarbonate blend Chlorinated polyvinyl chloride/polycarbonate blend

1992-06-01

1993-12-07

Buttner, David J.

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

Synthetic resins

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

525 84, 525 85, 525 86, 525133, 525146, C08L 2724, C08L 2706, C08L 6900

Patent

active

052684245

ABSTRACT:
A chlorinated polyvinyl chloride/polycarbonate blend is prepared utilizing a conventional vinyl impact modifier such as methyl methacrylate-butadiene-styrene (MBS) copolymer as a compatibilizing agent. The blend has good thermomechanical properties such as good dimensional stability under heat, good impact resistance, and improved processability. The chlorinated polyvinyl chloride, polycarbonate, and impact modifier are simultaneously mixed or, alternatively, a preblend of the polycarbonate and the conventional impact modifier is made to which the CPVC is subsequently added and blended.

REFERENCES:
patent: 4181644 (1980-01-01), Lehr
patent: 4515921 (1985-05-01), Witman
Braun, "Properties of PVC Blends with Polycarbonates and Chlorinated Polyethylene", Makromol. Chem. Macromol, Symp. (29) pp. 227-240; 1989.
European Search Report of Apr. 2, 1992 on European Appl. 91 12 0097.

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