| 摘要 |
PURPOSE:To provide a flame-retardant resin compsn. which has excellent processability, impact resistance and resin replaceability in molding machines and is excellent in general physical properties, consisting of a vinyl chloride resin and a specified ABS resin. CONSTITUTION:A flame-retardant resin compsn. consists of 30-80pts. (by weight; the same applies hereinbelow) vinyl chloride resin (A) having an average degree of polymn. of 300-1,000 and 70-20pts. ABS resin (B). 100pts. ABS resin of the component B is composed of 50-80pts. styrene copolymer (a) and 50-20pts. graft copolymer (b) wherein the component (a) is mainly composed of a styrene compd. monomer and a vinyl cyanide compd. monomer and has a number-average MW of 20,000-40,000 and the component (b) is obtd. by copolymerizing at least 50% conjugated diene rubber with not more than 50% vinyl monomer selected from the group consisting of a vinyl cyanide compd. and an arom. vinyl compd. By using the resins A and B having a relatively low MW, a resin compsn. which has excellent processability, impact resistance and resin replaceability in molding machines, is excellent in general physical properties and causes neither scorching nor discoloration can be obtd.
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