Patent ID: 6900256

Claim:
A flame retardant thermoplastic resin composition comprising: (A) about 45 to 95 parts by weight of a polycarbonate resin; (B) about 1 to 50 parts by weight of a rubber modified styrene-grafted copolymer prepared by graft-polymerizing (b 1 ) about 5 to 95 parts by weight of a monomer mixture comprising about 50 to 95% by weight of styrene, α-methylstyrene, halogen- or alkyl-substituted styrene or a mixture thereof and about 5 to 50% by weight of acrylonitrile, methacrylonitrile, maleic acid anhydride, C 1-4 alkyl- or phenyl N-substituted maleimide or a mixture thereof onto (b 2 ) about 5 to 95 parts by weight of a rubber polymer selected from the group consisting of butadiene rubber, acryl rubber, ethylene-propylene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, isoprene rubber, copolymer of ethylene-propylene-diene (EPDM), polyorganosiloxane-polyalkyl(meth)acrylate rubber and a mixture thereof; (C) about 0.5 to 50 parts by weight of a styrene-containing copolymer polymerized with (c 1 ) about 50 to 95% by weight of styrene, α-methylstyrene, halogen- or alkyl-substituted styrene, or a mixture thereof and (c 2 ) about 5 to 50% by weight of acrylonitrile, methacrylonitrile, maleic acid anhydride, C 1-4 alkyl- or phenyl N-substituted maleimide or a mixture thereof; (D) about 0.5 to 50 parts by weight of a (meth)acrylic acid ester copolymer polymerized with (d1) about 44 to 90% by weight of a methacrylic acid alkyl ester, a C 1-8 acrylic acid alkyl ester, or a mixture thereof, (d2) about 5 to 55% by weigh to styrene, α-methylstyrene, halogen- or alkyl-substituted styrene or a mixture thereof and (d3) about 1 to 20% by weight of acrylonitrile, methacrylonitrile, or a mixture thereof; (E) about 1 to 30 parts by weight of a phosphate ester morpholide composition as a flame retardant; and (F) about 0.05 to 5.0 parts by weight of a fluorinated polyolefin resin with average particle size of about 0.05 to 1000 μm and density of about 1.2 to 2.3 g/cm 3 as per 100 parts by weight of (A)+(B)+(C)+(D), wherein the phosphate ester morpholide composition is represented by the following formula (III): where R 7 , is a C 6-20 aryl group or an alkyl-substituted C 6-20 aryl group, R 8 is a C 6-30 aryl group or an alkyl-substituted C 6-30 aryl group, y is 1 or 2, and m is the average number of morpholide repeating units, n is the average number of R 7 repeating units, and m+n is 0 to 3.