A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a saturated solution with water or another suitable solvent is converted with an aliphatic or cycloaliphatic dial to a dicarboxylic acid alkanediolestercarboxylate and/or its oligomers, which are polycondensed in further process steps to the polyester.
本发明描述了一种制造芳香族二
羧酸与脂肪族和/或环脂肪族二元醇聚酯的方法、在该方法中,芳香族二
羧酸在一元
羧酸或一元
羧酸与
水或其他适当溶剂的饱和溶液中的混合物存在的情况下,与脂肪族或环脂族转盘一起转化为二
羧酸烷二醇酯
羧酸盐和/或其低聚物,这些低聚物在进一步的工艺步骤中缩聚成聚酯。