| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester composition which has excellent transparency, and hardly causes fluctuation of the transparency, from which the generation of aldehydes such as acetaldehyde at molding is reduced, and which is suitably usable for a molded article such as a hollow molded article, a sheet-shaped material and an oriented film, and a material such as a material covered on a base material; to provide a polyester composition from which the hollow molded article having excellent pressure tightness and heat-resistant dimensional stability is efficiently produced especially by high-speed molding; and to provide the polyester molded article comprising the composition. SOLUTION: The polyester composition comprises at least two kinds of polyesters having the substantially same composition as essential components. The differences in intrinsic viscosity and contents of water of the polyesters are 0.05-0.30 dL/g and≤300 ppm respectively. COPYRIGHT: (C)2006,JPO&NCIPI
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