| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester, particularly aliphatic polyesters which can easily obtain polymers having a high degree of polymerization with good industrial efficiency. SOLUTION: This method for manufacturing a polyester is a method of manufacturing a polyester from a dicarboxylic acid and a diol and comprises subjecting the dicarboxylic acid and the diol to solution polycondensation under normal pressures in the presence of a distannoxane catalyst by allowing a solvent which does not dissolve any of the dicarboxylic acid, the diol, and a polyester to be formed from the dicarboxylic acid and the diol to be present together to form a state such that mainly two phases exist.
|
