Flame retardant resin composition having good impact strength and high melt flow index

A flame retardant resin composition comprising:

• (A) 100 parts by weight of a basic resin composed of acrylonitrile-butadiene-styrene copolymer and styrene-acrylonitrile copolymer and
• (B) 10-30 parts by weight of a bromine-based organic flame retardant compound, wherein the bromine-based organic flame retardant compound (B) contains octabromodiphenyl ethane represented by the following formula 1 and is a mixture containing 7.5-8.5 bromines at average in one molecule thereof, produced by brominating diphenylethane, and has a lowest melting point of 180-200° C. and a highest melting point of 210-230° C., and
• wherein the flame retardant resin composition has a flame retardancy of V0 according to UL-94 and an impact strength of 19.3 to 29.0 kg.cm/cm,
• wherein flame retardancy of the flame retardant resin composition is V-2 according to UL-94
• wherein X+Y=8,
• wherein the basic resin (A) is composed of 10-90 weight % of the acrylonitrile-butadiene-styrene copolymer and 10-90 weight % of the styrene-acrylonitrile copolymer, and the styrene-acrylonitrile copolymer has a weight average molecular weight of 50,000-250,000 and has an acrylonitrile monomer by 20-40 weight %, wherein the acrylonitrile-butadiene-styrene copolymer is composed of 10-90 weight % of the acrylonitrile-butadiene-styrene copolymer prepared by emulsion graft polymerization and has butadiene rubber content of 30-70 weight % and 10-90 weight % of the acrylonitrile-butadiene-styrene copolymer prepared by bulk graft polymerization and has butadiene rubber content of 2-20 weight %.