To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether.
A method for removing a 2-alkoxyethanol, including the step of adding one or more azeotropic solvents selected from the group consisting of alkanes having 7 to 8 carbon atoms and cycloalkanes having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol represented by the following formula (1)
R—O—CH2CH2OH (1)
where R represents an alkyl group having 1 to 4 carbon atoms, and a (2-alkoxyethyl) vinyl ether represented by the following formula (2)
R—O—CH2CH2O—CH═CH2 (2)
where R has the same meaning as R in the formula (1),
and subjecting the resulting mixture to azeotropic distillation.
提供一种方法,能够从含有 2-烷氧基
乙醇和(2-烷氧基乙基)
乙烯基醚的混合物中简便有效地去除 2-烷氧基
乙醇,同时抑制(2-烷氧基乙基)
乙烯基醚产率的降低。
一种去除 2-烷氧基
乙醇的方法,包括以下步骤:向含有下式(1)代表的 2-烷氧基
乙醇的混合物中加入一种或多种共沸溶剂,这些溶剂选自具有 7 至 8 个碳原子的
烷烃和具有 7 至 8 个碳原子的环
烷烃所组成的组。
r-o-ch2ch2oh (1)
其中 R 代表具有 1 至 4 个碳原子的烷基,以及下式(2)所代表的(2-烷氧基乙基)
乙烯基醚
r-o-ch2ch2o-ch═ch2 (2)
其中 R 的含义与式(1)中 R 的含义相同、
并将所得混合物进行共沸蒸馏。