THERMOPLASTIC POLYESTER RESIN COMPOSITION

PROBLEM TO BE SOLVED: To obtain a thermoplastic polyester resin composition excellent in transparency, colorability and mechanical properties through finding a component capable of imparting a thermoplastic polyester resin with high flexibility even under low-temperature processing without declining in transparency and colorability by adding the component to the resin. SOLUTION: The thermoplastic polyester resin composition is obtained by compounding 100 pts. mass of a polyethylene terephthalate-based resin composed of a dicarboxylic acid component and a diol component, wherein terephthalic acid accounting for ≥80 mol% of the dicarboxylic acid component and ethylene glycol and 1,4-cyclohexanedimethanol accounting for 60-90 mol% and 40-10 mol% of the diol component respectively, with 1-50 pt(s). mass of at least one kind of epoxidized fatty acid monoester compound 6.0-9.0 mass% in oxirane oxygen content. COPYRIGHT: (C)2005,JPO&NCIPI