| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin composition which, when molded, hardly causes mold deposit by compounding a polycarbonate resin with a copolymer containing aromatic vinyl monomer units and vinyl cyanide monomer units, a copolymer formed by grafting an aromatic vinyl monomer component onto a rubbery polymer and an organophosphorus flame retardant. SOLUTION: This composition comprises 70-98 pts.wt. polycarbonate resin, 29-0.1 pt.wt. copolymer containing aromatic vinyl monomer units and vinyl cyanide monomer units; 1-29.9 pts.wt. copolymer prepared by grafting at least one monomer selected from among aromatic vinyl monomers, vinyl cyanide monomers and alkyl (meth)acrylates onto a rubbery polymer (the sum of amounts of ingredients described hereinabove being 100 pts.wt.); and 5-20 pts.wt. flame retardant comprising 99-93 wt.% organophosphorus compound of formula I having an average degree of condensation (N) of 1 or higher but lower than 1.2 and 1-7 wt.% organophosphorus compound of formula II. In the formulas, Ra to Rd are each aryl; (n) is a natural number; X is an aromatic group; Re to Rg are each Ra or the like; (j) to (m) and (q) to (s) are each 0-1; and N is the mean value of (n).
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