The present invention relates to a continuous process for the preparation of unsaturated acetals by reacting olefinically unsaturated aliphatic compounds with allyl alcohols in a reaction column, where the reactants are only partially reacted in the reaction column, the resulting acetal is concentrated in at least two successive evaporation stages, and the recovered reactants are returned to the reaction column.
本发明涉及一种通过在反应柱中使烯烃类不饱和脂肪族化合物与烯丙基醇反应制备不饱和
缩醛的连续工艺,其中反应物在反应柱中只进行部分反应,生成的
缩醛在至少两个连续蒸发阶段中浓缩,回收的反应物返回反应柱。