A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.
一种热塑性聚酯
树脂组合物包括 0.05 至 10 份(按重量计)环氧化合物(B)和 0.001 至 1 份(按重量计)受阻胺化合物(C),相对于 100 份(按重量计)热塑性聚酯
树脂(A),其羧基含量为 50 eq/t 或更少。该热塑性聚酯
树脂组合物能够生产出机械性能、耐热性和长期耐
水解性都很好的模塑制品,即使在 270 摄氏度或更高的高温下进行熔融加工,其机械性能和耐
水解性的下降幅度也很小。