| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester resin composition excellent in heat stability without generating problems of drawdown or crystallization during direct blow molding and capable of providing a direct blow molded article excellent in color tone and transparency in good productivity.SOLUTION: There is provided a polyester resin composition containing tetrakis [methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] methane of 0.1 to 1.0 mass% in a polyester resin in which 50 to 98 mol% of an acid component is terephthalic acid, 2 to 20 mol% is isophthalic acid, 80 mol% or more of a glycol component is ethylene glycol, a germanium compound of 5×10mol to 3.0×10mol based on 1 mol of the acid component of the polyester resin, and further at least one of an anthraquinone-based blue dye and an anthraquinone-based violet dye of 0.5 to 5 ppm, and having an intrinsic viscosity of 0.8 to 1.5 and a swell ratio of 1.2 to 1.4. |
