| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester composition suppressing the generation of aldehydes such as acetaldehyde in molding, having excellent transparency and little variation of transparency and capable of efficiently producing a blow-molded article having excellent pressure-resistance or high-temperature dimensional stability, especially a blow-molded article having excellent pressure-resistance and high-temperature pressure-resistance by a high-speed molding method and provide a polyester molded article made thereof and a method for producing the composition. SOLUTION: The polyester composition is composed mainly of at least two kinds of polyesters containing ethylene terephthalate as a main repeating unit. The difference of the intrinsic viscosity values of the polyesters is 0.05-0.30 dL/g and the thermal stability of at least one kind of polyester constituting the polyester composition satisfies a specific condition. COPYRIGHT: (C)2007,JPO&INPIT
|
