Abstract: A flame retardant antistatic polyester resin composition having excellent flame resistance, antistatic properties, mechanical strength and heat resistance, which includes a thermoplastic polyester and, per 100 parts by weight of the thermoplastic, 1 to 35 parts by weight of a bromine-containing flame retardant, 0.1 to 5 parts by weight of an antimony compound, 3 to 12 parts by weight of a conductive carbon black, 0.05 to 30 parts by weight of a low molecular weight polyester compound and 0.1 to 5 parts by weight of a metal salt of an ionic hydrocarbon copolymer. The resin composition may further contain a reinforcing filler, a crystallizing accelerator or a polyfunctional compound reactive with either or both of hydroxyl groups and carboxyl groups.

Abstract: A polyester-type resin composition which has sufficient anti-static property and flame-retardant property, in addition to maintaining mechanical strength and thermal resistance and which is useful for, in particular, electrical and electronic mechanical parts field. The flame-retardant anti-static polyester-type resin composition of the present invention comprises 100 parts by weight of a thermoplastic polyester (A), from 1 to 35 parts by weight of a bromine-type flame-retardant (B), from 0.1 to 5 parts by weight of an antimony compound (C) and from 3 to 12 parts by weight of conductive carbon black (D), wherein the Br/Sb weight ratio in said polyester-type resin composition is in a range from 5.5/1 to 35.0/1. Moreover, a reinforcing filler (E), a crystallizing accelerator (F) and a multifunctional compound (G) can be added in further to the said polyester-type resin composition.