| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester resin composition that does not cause the problem of drawdown or crystallization when direct blow-molded, exhibits excellent thermal stability and gives a direct blow-molded article excellent in color tones and transparency with good productivity.SOLUTION: The polyester resin composition comprises a polyester resin comprised of an acid component at least 70 mol% of which is terephthalic acid and a glycol component 60-98 mol% of which is ethylene glycol and 2-18 mol% of which is 1,4-cyclohexanedimethanol and, incorporated therewith, 0.1-1.0 mass% of tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane and a germanium compound in an amount of 5×10to 3.0×10mole based on 1 mole of the acid component of the polyester resin, and has an intrinsic viscosity (IV) of 0.8-1.5 and a swell ratio (SW) of 1.2-1.4. |
