| abstract |
PROBLEM TO BE SOLVED: To provide a hollow molded article in which the formation of acetaldehyde at the time of molding is suppressed, the hue and transparency are excellent, there is no problem in terms of variation in transparency, crystallization rate and crystallization rate variation, and excellent in heat resistance, In particular, it is an object of the present invention to provide a polyester resin composition capable of efficiently producing a hollow molded product excellent in pressure resistance and heat and pressure resistance by high-speed molding and its use. A polyester resin composition comprising, as main components, a polyester resin having an increase in cyclic ester oligomer before and after heating and melting of 0.40% by weight or less and at least one aldehyde reducing agent. [Selection figure] None |