The invention provides a method of producing alkylene glycol monosorbates which comprises reacting sorbic acid and an alkylene oxide having 2 to 4 carbon atoms in a certain system containing a solvent inactive to the alkylene glycol monosorbates, one or more iron catalysts and one or more compounds consisting of phenothiazines and alkylphenols, washing the obtained synthesized liquid with an aqueous (bi)carbonate solution, and then purifying the washed liquid by distillation, and a method of reserving the alkylene glycol monosorbates.
本发明提供了一种生产烷二醇单吸附剂的方法,该方法包括在含有对烷二醇单吸附剂不活泼的溶剂、一种或多种
铁催化剂和一种或多种由
吩噻嗪和烷基
酚组成的化合物的特定体系中,使
山梨酸和具有 2 至 4 个碳原子的氧化亚烷反应,用(双)
碳酸盐
水溶液洗涤得到的合成液,然后通过蒸馏提纯洗涤液,以及保留烷二醇单吸附剂的方法。