abstract |
(57) [Summary] [PROBLEMS] To improve the impact resistance and to improve the processability, fluidity, heat stability, appearance of molded products, moisture and heat resistance during extrusion. Provided is a polyester resin composition having excellent heat cycle properties. SOLUTION: The polyester resin composition comprises the following components (A) to (D), and their total is 100% by weight. (A) thermoplastic polyester resin: 30 to 95% by weight (B) copolymer: 0.5 to 20% by weight (C) epoxy resin: 1 to 20% by weight (D) glass fiber: 0 to 60% by weight |