Title:
長鎖アミノ酸および二塩基酸を分離する方法
Document Type and Number:
Japanese Patent JP7148558
Kind Code:
B2
Abstract:
There is disclosed a process for the separation of long chain amino acid and long chain dibasic acid, comprising: (1) recovering alkylamine by distilling or by extracting with an extractant solvent; (2) adding an acid an extractant solvent to the aqueous solution of step (1) to form an acidic salt of long chain amino acid to extract long chain dibasic acid; (3) separating the mixture of step (2) into an aqueous phase and an extractant phase; (4) neutralizing the aqueous phase of step (3) with an alkali hydroxide or ammonium hydroxide to obtain a crystalline solid of long chain amino acid; (5) cooling the extractant phase of step (3) to crystallize the long chain dibasic acid and recovering the dibasic acid by solid-liquid separation; and (6) recovering the extractant solvent of step (5) and isolating the alkanoic acid by distillation.
Inventors:
Fu Song Show
Application Number:
JP2019571718A
Publication Date:
October 05, 2022
Filing Date:
June 22, 2018
Export Citation:
Assignee:
Bitowerx IP LLC
International Classes:
C07C227/40; C07C51/43; C07C51/44; C07C53/126; C07C55/21; C07C209/84; C07C211/07; C07C229/08
Domestic Patent References:
| JP58000939A | ||||
| JP48036108A | ||||
| JP36021514B1 | ||||
| JP2006504802A | ||||
| JP49014410A |
Foreign References:
| WO2017088218A1 | ||||
| US4496736 | ||||
| US3806543 | ||||
| US20040082042 |
Attorney, Agent or Firm:
Okuyama Shoichi
Tetsuo Matsushima
Nakamura Ayako
Soji Morimoto
Yu Tanaka
Koichi Tokumoto
Akiko Mizushima
Kohei Arihara
Tetsuo Matsushima
Nakamura Ayako
Soji Morimoto
Yu Tanaka
Koichi Tokumoto
Akiko Mizushima
Kohei Arihara
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