Low-temperature impact blends of polycarbonate, graft copolymer

Details Low-temperature impact blends of polycarbonate, graft copolymer Low-temperature impact blends of polycarbonate, graft copolymer

1988-10-12

1989-08-08

Pertilla, Theodore

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

Synthetic resins

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

525 69, C08L 6900

Patent

active

048553573

ABSTRACT:
Polymer blend compositions comprising a polycarbonate, a graft copolymer and a rigid copolymer exhibit improved low-temperature impact properties. The polycarbonate has a weight average molecular weight, Mw, not less than 35,000 and the rigid copolymer has a weight average molecular weight, Mw, not less than 130,000. The graft copolymer is formed from at least two ethylenically unsaturated monomers graft polymerized to a rubbery polymer substrate. The rigid copolymer is formed from at least two ethylenically unsaturated monomers and is compatible with the graft copolymer.

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