Patent ID: 8314168

Claim:
A composition comprising: about 80 to about 98.5 parts by weight of a polycarbonate resin; about 1 to about 10 parts by weight of a syndiotactic polystyrene resin; about 2 to about 15 parts by weight of a core-shell graft copolymer; and about 0.5 to about 3 parts by weight of a phosphate ester compound, based on 100 parts by weight of the polycarbonate resin, the syndiotactic polystyrene resin, the core-shell graft copolymer and the phosphate ester compound, wherein the core-shell graft copolymer is a copolymer of a rubber polymer core and unsaturated monomers grafted to the polymer core; the rubber polymer core comprises a C 4-6 diene rubber, an acrylate rubber, a silicone rubber, or a mixture of a silicone rubber and an acrylate rubber; the unsaturated monomers grafted to the rubber polymer core comprise one or more unsaturated monomers selected from the group consisting of C 1 -C 8 methacrylic acid alkyl esters, C 1 -C 8 methacrylic acid esters, C 1 -C 8 acrylic acid alkyl esters, maleic anhydrides, and C 1 -C 4 alkyl or phenyl N-substituted maleimides; and the phosphate ester compound is represented by the Formula (II): wherein each R is independently selected from C 6-20 aryl or alkyl-substituted C 6-20 aryl; each X is independently selected from C 6-30 arylene or alkyl-substituted C 6-30 arylene; and n is an integer of 0, 1, 2, or 3 wherein the composition has impact strength of at least about 50 kg·cm/cm when a specimen of the composition is tested according to the standard ASTM D256 A (¼″ notched) at 23° C.