Patent ID: 7314893

Claim:
An impact-modified engineering plastic comprising: a) from 70 to 99 percent by weight of an engineering plastic selected from the group consisting of polyesters, alkyl (meth)acrylate polymers and copolymers, acrylonitrile/butadiene/styrene terpolymers, acrylonitrile/styrene/acrylate copolymers, polycarbonates, methacrylate/butadiene/styrene copolymers, polystyrene, acrylonitrile/acrylate copolymers, acrylonitrile/methyl methacrylate copolymers, polyolefins, poly(vinyl chloride), polyamides, polyetheresteramides, a homopolymer of a vinylidene halide, and alloys thereof; and b) from 1-30 percent by weight of a core/shell impact modifier comprising 1) from 70 to 90 percent by weight of an elastomeric core polymer comprising: (a) from 50 to 85 percent by weight of 2-ethyl hexyl acrylate (2-EHA) units, and from 15 to 50 percent by weight of n-octyl acrylate (n-OA) units; (b) from 0.1 to 2.0 percent by weight of at least one crosslinking agent; and (c) from 0.1 to 2.0 percent by weight of at least one graftlinking agent; and 2) from 10 to 30 percent by weight of a shell polymer.