Patent ID: 8492463

Claim:
A flameproof thermoplastic resin composition comprising: (A) about 5 to about 40% by weight of an epoxy group-containing rubber modified aromatic vinyl copolymer resin comprising (a 1 ) about 0.5 to about 95% by weight of an aromatic vinyl graft copolymer resin and (a 2 ) about 5 to about 99.5% by weight of an epoxy group-containing vinyl copolymer resin, wherein said epoxy group-containing vinyl copolymer resin (a 2 ) is a copolymer comprising (a 21 ) about 0.001 to about 5 mol% of an epoxy group-containing unsaturated epoxy compound and (a 22 ) about 95 to about 99.999 mol% of a vinyl compound, wherein said (a 22 ) vinyl compound comprises about 40 to about 90% by weight of an aromatic vinyl monomer and about 10 to about 60% by weight of a monomer copolymerizable with the aromatic vinyl monomer; (B) about 30 to about 90% by weight of a polycarbonate resin; (C) about 1 to about 50% by weight of a polyester resin; and (D) about 5 to about 30 parts by weight of a phosphorus-containing flame retardant, per 100 parts by weight of a base resin comprising (A), (B) and (C) wherein said epoxy group-containing vinyl copolymer resin (a 1 ) is a copolymer consisting of (a 11 ) about 0.001 to about 5 mol % of an epoxy group-containing unsaturated epoxy compound and (a 22 ) about 95 to about 99.999 mol % of a vinyl compound, wherein said (a 22 )vinyl compound consists of about 40 to about 90% by weight of an aromatic vinyl monomer selected from the group consisting of styrene, α-methyl styrene, β-methyl styrene, p-methyl styrene, p-t-butyl styrene, ethyl styrene, vinyl xylene, monochlorostyrene, dichlorostyrene, dibromosstrene, vinyl naphthalene, and combinations thereof, about 10 to about 60% by weight of monomer copolymerizable with the aromatic vinyl monomer selected from the group consisting of acrylonitrile, methacrylonitrile athacrylonitrile, and combinations thereof, and optionally about 0 to about 30% by weight of a monomer imparting processabilty and heat resistance selected from the group consisting of acrylic acid,methacrylic, maleic amhydride, C 1 -C 4 alkyl methacrylate, phenyl acrylate, phenyl methacrylate, benzyl acrylate, benzyl methacrylate, 2-phenylethyl acrylate, 2-phenylethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate; N-substituted maleimide; maleic acid, fumaric acid, itaconic acid anhydrides thereof; dimethyl aminoethyl acrylate, diethyl aminoethyl acrylate, vinyl imadazole, vinyl pyrrolidone, vinyl caprolactam, vinylcarbazole, vinylaniline, acrylamide, methacrylamide; and combinations thereof.