Method for producing alkyldiol monoglycidyl ether
View Patent ↗A production method by which an alkyldiol monoglycidyl ether can be efficiently produced without requiring a complex purification step is provided. A method for producing an alkyldiol monoglycidyl ether, including a step of reacting a vinyl ether-containing alcohol with an epihalohydrin to form a vinyl ether-containing glycidyl ether, conducting a devinylation reaction in the presence of an acid catalyst and water, and further conducting an acetal decomposition reaction by adding an acid aqueous solution.
1. A method for producing a monoglycidyl ether of an alkylene dial or alkenylene diol, comprising the steps of:
reacting a vinyl ether-containing alcohol with an epihalohydrin, to form a vinyl ether-containing glycidyl ether,
subjecting the vinyl ether-containing glycidyl ether to a devinylation reaction in the presence of an acid catalyst and water,
removing acetaldehyde produced by the devinylation reaction while maintaining a reaction pressure of 50kPa or less and a reaction temperature of 20 to 50° C, and
further conducting an acetal decomposition reaction by adding an acid aqueous solution,
wherein the vinyl ether-containing alcohol is represented by the following formula (I):
CH 2 ═CH—O—R—OH Formula (I)
wherein R represents a straight chain or alicyclic alkylene group having a carbon number of 2 to 20, or a straight chain or alicyclic alkenylene group having a carbon number of 2 to 20.
2. The method for producing a monoglycidyl ether of an alkylene diol or alkenylene diol according to claim 1 , wherein the pressure in the reaction system in the acetal decomposition reaction is 20 kPa or less.
3. The method for producing a monoglycidyl ether of an alkylene diol or alkenylene diol according to claim 1 , wherein the vinyl ether-containing alcohol is 4-hydroxybutyl vinyl ether.
4. The method for producing a monoglycidyl ether of an alkylene diol or alkenylene diol according to claim 1 , wherein the devinylation reaction is conducted in the presence of 20 to 60 mass % percent water with respect to the vinyl ether-containing glycidyl ether.