MANUFACTURING METHOD FOR BIODEGRADABLE HIGH MOLECULAR-WEIGHT ALIPHATIC POLYESTER

摘要

PROBLEM TO BE SOLVED: To provide such a manufacturing method for an excellently biodegradable high molecular-weight aliphatic polyester as is industrially profitable and as is capable of shortening the reacting time until the attainment of a high molecular-weight. SOLUTION: The manufacturing method comprises a polycondensation reaction, in the presence of aspartic acid, of an aliphatic dicarboxylic acid and its diester or an aliphatic dicarboxylic acid anhydride or of a mixture of them with an aliphatic diol. COPYRIGHT: (C)2005,JPO&NCIPI