| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester resin composition having no problem of drawdown or crystallization during direct blow molding, excellent in thermal stability, and capable of providing a direct blow molded article excellent in color tone and transparency with good productivity.SOLUTION: The polyester resin composition contains: 0.1 to 1.0 mass% of tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane in a polyester resin in which 50 to 98 mol% of an acid component configuring polyester is terephthalic acid, 2 to 20 mol% of the acid component is 1,4-cyclohexanedicarboxylic acid, and 80 mol% or more of a glycol component is ethylene glycol; and a germanium compound of 5×10mol to 3.0×10mol based on 1 mol of the acid component of the polyester resin. The polyester resin composition has an intrinsic viscosity (IV) of 0.8 to 1.5 and a swell ratio (SW) of 1.2 to 1.4. |
