Title:
【発明の名称】改良されたカルボン酸の精製及び結晶化方法
Document Type and Number:
Japanese Patent JP2944157
Kind Code:
B2
Abstract:
A process for preparing a carboxylic acid of high purity comprises preparing an undersaturated solution of a salt of the carboxylic acid; subjecting the undersaturated salt solution to water-splitting electrodialysis to form base and a supersaturated solution of the carboxylic acid; and, then crystallizing the carboxylic acid from the supersaturated solution. In the preferred embodiment, the undersaturated solution is a fermentation broth containing sodium succinate and sodium acetate and the carboxylic acid obtained is succinic acid.
Inventors:
KURISU EI BAAGURANDO
HONNAMUPARAMU IRANKOAN
DEEBITSUTO EI GURASUNAA
HONNAMUPARAMU IRANKOAN
DEEBITSUTO EI GURASUNAA
Application Number:
JP20103390A
Publication Date:
August 30, 1999
Filing Date:
July 27, 1990
Export Citation:
Assignee:
MISHIGAN BAIO TEKUNOROJII INST
International Classes:
C07C7/14; C07C51/42; C07C51/43; C07C55/10; C12P7/46; (IPC1-7): C12P7/46; C07C7/14; C07C51/42; C07C55/10
Domestic Patent References:
| JP62133092A | ||||
| JP6178392A | ||||
| JP1502821A | ||||
| JP1502673A |
Other References:
【文献】米国特許4678553(US,A)
【文献】米国特許4781809(US,A)
【文献】米国特許4781809(US,A)
Attorney, Agent or Firm:
Jun Tsuda (3 others)