| abstract |
Blends of polycarbonate, such as a polycarbonate of bisphenol-A, with (1) a grafted and nongrafted rubber, such as a diene rubber and a diene rubber grafted with a polar polymer; (2) a monovinylidene aromatic/carboxylic anhydride copolymer, such as styrene/maleic anhydride copolymer, and (3) a compatible polymer, such as styrene/acrylonitrile copolymer, exhibit improved impact strength, melt flow properties and heat resistance. Such blends are particularly useful in the manufacture of molded parts which must be exposed to high temperature during manufacture and use. n An example of a particularly desirable blend is a blend of a homopolycarbonate of bisphenol-A with styrene/maleic anhydride copolymer and an ABS resin containing grafted and nongrafted butadiene rubber and styrene/acrylonitrile random copolymer. |