Title:
【発明の名称】水中でアジピン酸を精製する方法
Document Type and Number:
Japanese Patent JP3387504
Kind Code:
B2
Abstract:
The invention discloses a method for purifying adipic acid in water. More precisely it discloses an improvement in adipic acid crystallization or recrystallization in water, characterised in that the said crystallization or recrystallization is effected in presence of a strong proton acid and/or in the presence of carbon monoxide. This crystallization or recrystallization particularly enables the content of metal catalyst traces in the adipic acid to be reduced.
More Like This:
| WO/1997/046509 | METHOD FOR PURIFYING ADIPIC ACID IN WATER |
| WO/2022/255369 | HEAT EXCHANGER |
| JP2958673 | METHOD AND APPARATUS FOR PURIFYING ACRYLIC ACID, AND ACRYLIC ACID PURIFIED BY THE METHOD |
Inventors:
Henriette, Eric Bae.
Lecomte, Philip
Karl, Patwais
Robert, Peron
Lecomte, Philip
Karl, Patwais
Robert, Peron
Application Number:
JP50026198A
Publication Date:
March 17, 2003
Filing Date:
May 29, 1997
Export Citation:
Assignee:
Rhodia Fiber and Resin Intermeet
International Classes:
C07C51/43; C07C55/14; (IPC1-7): C07C51/43; C07C55/14
Domestic Patent References:
| JP597767A | ||||
| JP49812B1 |
Other References:
【文献】仏国特許発明901841(FR,B1)
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)