| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester composition capable of producing a polyester molded article such as a hollow molded article having suppressed generation of formaldehyde in molding, and excellent transparency, pressure resistance and thermal dimensional stability by a high-speed molding, and provide a polyester molded article made of the composition. SOLUTION: The polyester composition is composed mainly of a polyester A and a polyester B containing ethylene terephthalate as main repeating unit. The difference of the intrinsic viscosity IV<SB>A</SB>of the polyester A and the intrinsic viscosity IV<SB>B</SB>of the polyester B is 0.05-0.30 and the difference of the heating crystallization temperature of the polyester A and that of the polyester B is≤10°C. The polyester composition is further incorporated with one or more resins selected from polyolefin resins, polyamide resins and polyacetal resins in an amount of 0.1 ppb to 1,000 ppm. COPYRIGHT: (C)2006,JPO&NCIPI
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