| abstract |
(57) [Abstract] [Purpose] To improve the molding stability of polybutylene terephthalate (PBT) resin. [Composition] A composition comprising 95 to 99.9% by weight of PBT resin and 5 to 0.1% by weight of a mixed ester, and is excellent in heat resistance, rigidity and toughness in addition to molding stability. Here, the mixed ester is composed of an aliphatic monocarboxylic acid having 24 to 40 carbon atoms, a short-chain aliphatic dicarboxylic acid having 2 to 12 carbon atoms, and a polyol having 3 to 12 carbon atoms and 3 to 6 OH groups. . |