| 摘要 |
PROBLEM TO BE SOLVED: To provide an aliphatic polyester composition having a greatly improved crystallization rate while maintaining a high level of heat stabilities such as heat resistance, and enabling to achieve high levels of well balanced characteristics in heat stabilities and moldability generally opposing to each other. SOLUTION: The aliphatic polyester composition comprises a low molecular weight aliphatic polyester with a weight average molecular weight of 5,000-35,000 and a high molecular weight aliphatic polyester having a weight average molecular weight of 120,000-1,000,000. COPYRIGHT: (C)2006,JPO&NCIPI
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