| 摘要 |
PURPOSE:To provide polyethylene terephthalate excellent in high-speed moldability and high in productivity, and to provide a molded article made therewith. CONSTITUTION:Polyethylene terephthalate is provided which comprises 96.0-99.0mol% repeating oxyethylene oxyterephthaloyl units and 1.0-4.0mol% repeating trioxyheptamethylene terephthaloyl units and which has an intrinsic viscosity of 0.60-0.90dl/g and a heat quantity at the exothermic peak in the falling-temperature crystallization curve measured with a scanning differential calorimeter of 7.0J/g or lower. |
