Method for producing isobutyl vinyl ether and method for purifying isobutyl vinyl ether

Provided is a method for producing isobutyl vinyl ether from isobutanol and acetylene with high purity and high efficiency. A method for producing isobutyl vinyl ether using isobutanol as a starting material alcohol, said method comprising the following steps A1, A2, and A3. (Step A1) A vinyl ether synthesis step of reacting isobutanol with acetylene to obtain a mixture containing unreacted isobutanol and isobutyl vinyl ether; (Step A2) an acetalation step in which the unreacted isobutanol and isobutyl vinyl ether in the mixture are reacted in the presence of an acid catalyst and converted into acetaldehyde diisobutyl acetal; and (step A3) a distillation step for removing acetaldehyde diisobutyl acetal from the acetal-containing mixture obtained in step A2 by distillation. 本发明提供一种由异丁醇和乙炔高纯度且高效地制造异丁基乙烯基醚的方法。一种以异丁醇为原料醇的异丁基乙烯基醚的制造方法，上述制造方法包括以下工序A1、A2和A3。(工序A1)使异丁醇与乙炔反应而得到包含未反应的异丁醇和异丁基乙烯基醚的混合物的乙烯基醚合成工序；(工序A2)使上述混合物中的未反应的异丁醇与异丁基乙烯基醚在酸催化剂存在下反应而转化为乙醛二异丁基缩醛的缩醛化工序；(工序A3)从工序A2中得到的含缩醛混合物中通过蒸馏除去乙醛二异丁基缩醛的蒸馏工序。