| 摘要 |
A process for producing a polyester comprising as repeating units (i) residues of at least one aliphatic hydroxycarboxylic acid, aminocarboxylic acid, or derivative thereof; or (ii) residues of (a) at least one aliphatic dicarboxylic acid or derivative thereof, (b) at least one aliphatic hydroxyamine, diol, polyol, diamine or polyamine, and optionally (c) at least one aliphatic hydroxycarboxylic acid, aminocarboxylic acid or derivative thereof; comprises reacting the components defined in (i) or components defined in (ii) in the absence of a solvent and in the presence of a lipase. |
