| 摘要 |
PROBLEM TO BE SOLVED: To provide thermoplastic compositions excellent in hydrolysis resistance and the like.SOLUTION: Disclosed is a thermoplastic composition including a molding resin including (a-1) a poly(trimethylene terephthalate) resin, (a-2) 0 to 20 wt.% of one or more organic additives and (a-3) 0.1 to 4 wt.% of one or more ionomer polymers or a combination of one or more ionomer polymers and acid copolymers. A neutralization ratio is the mole fraction of the carboxylic acid repeat units neutralized as an alkali metal salt, based on the total carboxylic acid repeat units in the ionomer and acid copolymers. Each ionomer and acid copolymer weight percentage is based on the weight of the components (a-1), (a-2) and (a-3). The molding resin has an alkali carboxylate factor, ACF, of 4 to 14. The ACF is defined by the formula (I): &Sgr;[(W Z N)(W N)100/&Sgr;(W)]. |
