14- 14- Refining method of organic amine organic amine refined by the method and polyamide prepared therefrom

摘要

1,4-diaminobutane, and the step of concentrating the fermentation broth comprising one or more of its salts; To prepare a basic composition pH at least 12 by adding a base to the concentrate of the fermentation broth; And the step of recovering the composition from the basic 1,4-diaminobutane; purification method of 1,4-diaminobutane containing, a 1,4-diaminobutane purified by the above methods, and the 1,4- the polyamide is provided that is prepared using diaminobutane.