METHOD FOR PURIFICATION OF 1,4-DIAMINOBUTANE Russian patent published in 2022 - IPC C07C211/09 C07C209/06 C07C209/84 C12P13/00 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for the production of 1,4-diaminobutane of high purity. A method for the production of 1,4-diaminobutane by fermentation is proposed, including stages of: cultivation of a microorganism producing 1,4-diaminobutane in a medium, while providing a nitrogen source, which is at least one of ammonium, ammonium salt of an organic compound, a nitrogen-containing organic compound, and ammonium carbonate or bicarbonate, with the production of fermentation broth or its concentrate containing carbonate salt of 1,4-diaminobutane; separation of a composition including carbonate salt of 1,4-diaminobutane and a solvent by distillation of fermentation broth or its concentrate; and removal of carbonate from carbonate salt of 1,4-diaminobutane, contained in the specified composition, by fractional distillation with extraction of 1,4-diaminobutane.

EFFECT: proposed method allows for obtaining 1,4-diaminobutane with high yield with reduced formation of side products.

11 cl, 2 dwg, 21 tbl, 6 ex