| 摘要 |
Method of preparation of esters of beta -hydroxybutyric acid, comprising:… 1) a stage of alcoholysis of the polyhydroxybutyrate in the presence of an alcohol, a halogenated solvent and an acid,… 2) a neutralisation stage comprising the addition of an alcoholate in solution in the alcohol,… 3) a purification stage comprising the addition of a halogenated solvent and the azeotropic removal of water and of the alcohol,… 4) an ester recovery stage comprising a filtration, a distillation of the halogenated solvent and a distillation of the ester. …<??>This process makes it possible to obtain esters of beta -hydroxybutyric acid of high purity. |
