| 摘要 |
PURPOSE: Provided is a resin composition based on polycarbonate, which has the improved physical property and fire retardancy, and which does not generate stress crack due to bleeding when being molded, without its heat retardancy being not decreased. CONSTITUTION: The resin composition comprises (a) 45-95 parts by weight of thermoplastic polycarbonate resin of formula 1; (b) 1-50 parts by weight of rubber modified vinyl graft copolymer obtained by graft polymerizing (b1) 5-95 parts by weight of monomer mixture consisting of 50-95 parts by weight of styrene, alpha-methylstyrene, halogen or alkyl substituted styrene or mixture thereof and 5-50 parts by weight of acrylonitrile, methacrylonitrile, C1-C8 methacrylic acid alkyl esters, C1-C8 acrylic acid alkyl esters, maleic anhydride, C1-C4 alkyl or phenyl N-substituted maleimide or mixture thereof, into (b2) 5-95 parts by weight of any one selected from the group consisting of butadiene rubber, acrylic rubber, ethylene/propylene rubber, styrene/butadiene rubber, acrylonitrile/butadiene rubber, isoprene rubber, ethylene-propylene-diene rubber(EPDM), polyorganosiloxane/polyalkyl(meta)acrylate rubber complex, and mixture thereof; (c) 0-50 parts by weight of vinyl copolymer consisting of (c1) 50-95 parts by weight of styrene, alpha-methylstyrene, halogen or alkyl substituted styrene or mixture there, and (c2) 5-50 parts by weight of acrylonitrile, methacrylonitrile, C1-C8 methacrylic acid alkyl esters, C1-C8 acrylic acid methyl esters, maleic anhydride, C1-C4 alkyl or phenyl N-substituted maleimide or mixture thereof; (d) 1-30 parts by weight of mixture of organo phosphoric compound consisting of (d1) 5-90 parts by weight of phosphagen compound and (d2) 95-10 parts by weight of compound based on phosphoric ester morpholide; and (e) 0.05-5 parts by weight of fluorinated polyoleifinic resin having average particle size of 0.05-1000 micrometer and density of 1.2-2.3 g/cm¬3.
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