| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polymer which has an aliphatic ester structure comprising 1,4-butanediol and succinic acid, prevents the lowering of the mol. wt. due to retention, when melted and processed, and has sufficient strengths and appearance. SOLUTION: The polymer has an aliphatic ester structure comprising 1,4-butanediol and succinic acid and having an acid value of≤1 KOH mg/g. COPYRIGHT: (C)2005,JPO&NCIPI
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