FLAME-RETARDANT POLYCARBONATE RESIN COMPOSITION EXCELLENT IN LIGHT RESISTANCE, MOLDABILITY, AND IMPACT RESISTANCE

摘要

PURPOSE: To obtain a resin compsn. excellent in light resistance, moldability, impact resistance, heat resistance, weld strength. and flame retardance by compounding a specific resin mixture contg, a polycarbonate resin with specific additives. ;CONSTITUTION: A resin mixture is prepd. by mixing a polycarbonate resin, a multistage graft copolymer obtd. by successively grafting specified amts. of an acrylic ester, an arom. vinyl monomer, and a vinyl cyanide monomer onto a specified amt. of a rubbery polymer contg. 50wt.% or higher butadiene units and having a specified particle size, and a copolymer formed from specified amts. of a vinyl cyanide monomer and an arom. vinyl monomer. The mixture is compounded with compds. of formulas I (wherein n is 35-100; X is H, Cl, or Br; i to l are each 1-4; and R¹ and R² are each epoxy) and II (wherein n is 0-10; and R³ and R⁴ are each R¹) having a specified degree of halogenation, an Sb compd., and compds. of formulas III (wherein R⁵ and R⁶ are each H or 1-10C alkyl) and IV (wherein R⁷ to R¹⁰ are each a group of formula V; and R¹¹ is alkyl) each in a specified amt.;COPYRIGHT: (C)1996,JPO