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Priority to MYPI20033503priorityCriticalpatent/MY139639A/en
Publication of MY139639ApublicationCriticalpatent/MY139639A/en
Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms
(AREA)
Abstract
CYCLIC ESTERS OF HYDROXYL ORGANIC ACIDS CAN BE PRODUCED AND RECOVERED VIA AZEOTROPIC DISTILLATION. IN CERTAIN EMBODIMENTS CYCLIC ESTERS, SUCH AS GLYCOLIDE AND LACTIDE, CAN BE PRODUCED FROM A FERMENTATION BROTH OR OTHER FEED STREAM (10) THAT CONTAINS A HYDROXYL ORGANIC ACID, AN AMMONIUM SALT OF A HYDROXYL ORGANIC ACID, AN AMIDE OF A HYDROXYL ORGANIC ACID, OR AN ESTER OF A HYDROXYL ORGANIC ACID USING AZEOTROPIC DISTILLATION. THE HYDROXYL ORGANIC ACID OF THE FEED STREAM (10) OR THE HYDROXYL ORGANIC ACID DERIVED FROM THE FEED STREAM (10) BY DECOMPOSITION IS REACTED TO PRODUCE THE CYCLIC ESTER. IN OTHER EMBODIMENTS A CRUDE COMPOSITION OF A CYCLIC ESTER OF AN ORGANIC ESTER CAN BE PURIFIED USING AZEOTROPIC DISTILLATION.
MYPI200335032003-09-152003-09-15Azeotropic distillation of cyclic esters of hydroxy organic acids
MY139639A
(en)