| 摘要 |
This process for the purification by distillation of glycidyl (meth)acrylate containing light impurities and heavy impurities, is characterised in that: in a first stage, a distillation of the glycidyl (meth)acrylate to be purified is carried out in the presence of a first solvent capable of forming a low boiling point heteroazeotrope with the light impurities and epichlorohydrin, so as to obtain a tops (head fraction) which consists of a solvent/light product heteroazeotrope; and in a second stage, the glycidyl (meth)acrylate thus freed of the light products is subjected to a distillation in the presence of a second solvent capable of forming a low boiling point heteroazeotrope with glycidyl (meth)acrylate, so as to obtain a tops (head fraction) consisting of the desired pure glycidyl (meth)acrylate, thus freed of heavy impurities, the said solvents being, during these two distillations, present throughout the distillation region, including the distillation vessel.
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