Methods and systems for producing alkyl hydroxyalkanoates from hydroxycarboxylic acid recovery bottoms. The methods generally comprise the steps of obtaining a hydroxycarboxylic acid recovery bottom, adding a mono-alcohol to the hydroxycarboxylic acid recovery bottom to obtain a first mixture, heating the first mixture, optionally in the presence of a catalyst to form a reaction product, distilling the reaction product, and recovering an alkyl hydroxyalkanoate fraction.
从羟基
羧酸回收底部生产羟基烷酸烷基酯的方法和系统。这些方法一般包括以下步骤:获得羟基
羧酸回收底物;向羟基
羧酸回收底物中加入一元醇以获得第一混合物;加热第一混合物(可选择在催化剂存在的情况下)以形成反应产物;蒸馏反应产物;以及回收羟基烷酸烷基酯馏分。