Patent ID: 9090578
Filing Date: 2015-07-28
Classification: C07C,C07D

Abstract:
1. A preparation method for glycidylester of tertiary carbonic acids, comprising (1) making tertiary carbonic acid react with halo substituted epoxide with the molar ratio of tertiary carbonic acid to halo substituted epoxide being 1:1.5-20, in the presence of water and basic catalyst with the maximum amount of 30 mol% of the mole of tertiary carbonic acid with rapid stirring at 30-110° C. for 0.5 h-2.5 h; standing to stratify and then separating the lower saline water; removing and recovering unreacted halo substituted epoxide by reduced pressure distillation to obtain halo substituted alcohol ester of tertiary carbonic acid and a small amount of glycidylester of tertiary carbonic acid; (2) dissolving all products obtained from step (1) in a water-miscible aliphatic alcohol; at 20-80° C. with rapid stirring, adding alkali metal hydroxide or alkali metal alkoxide with the amount of mole equal to tertiary carbonic acid of step (1) to react; standing to stratify after reaction and separating the lower saline water; then adjusting the obtained upper organic phase to neutral by adding acidifier or by passing through CO 2 gas to said organic phase, and separating the salt produced; then removing the organic phase by distillation, recovering the aliphatic alcohol; then washing the obtained product with water to remove the salt remained, obtaining the glycidylester of tertiary carbonic acid product by distillation or dehydration via desiccant; wherein said water includes water added before the reaction.