| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing glycidyl methacrylate from alkali metal salt of methacrylic acid and epichlorohydrin, in which the deterioration of interfacial properties during removal of the by-produced alkali metal hydrochloride by water washing is prevented.SOLUTION: In a process for obtaining an alkali metal salt of methacrylic acid from methacrylic acid and alkali metal carbonate, an alkali metal carbonate in which water-insoluble matter is removed beforehand, is used. By using an alkali metal carbonate in which water-insoluble matter has been removed, insoluble solids near the interface at the time of water-washing operation for removing the alkali metal hydrochloride which is by-produced during the reaction of alkali metal salt of methacrylic acid and epichlorohydrin to obtain glycidyl methacrylate, no longer occurs and a clear interface can be obtained, and the loss of the oil layer discharged together with the water layer can be suppressed. |
