| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyester resin composition from which a blow-molded article, that is excellent in thermal stability, color tones, transparency and impact resistance, can be molded with high productivity without causing a drawdown or crystallization problem when blow-molded.SOLUTION: The polyester resin composition contains: a polyester resin, which comprises mainly ethylene terephthalate units and contains 0.5-8 mol% of isophthalic acid as an auxiliary component and 0.5-6 mol% of an ethylene oxide adduct of bisphenol A, as a main component; and 0.05-1.0 mass% of a hindered phenol-based antioxidant. The polyester resin composition has 0.8-1.5 intrinsic viscosity (IV), 1.9-2.5 of a ratio of the weight-average molecular weight to the number-average molecular weight, and 20 equivalent/ton of a carboxyl end group concentration.</p> |
