C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 231/24 (2006.01) C07C 233/47 (2006.01) C07C 233/49 (2006.01) C11D 1/10 (2006.01) A61K 7/00 (1995.01) A61K 7/075 (1995.01) A61K 7/50 (1995.01)
Patent
CA 2358118
A process for producing an acidic N-(long-chain acyl)amino acid, characterized by separating at 35 to 80 ~C a mixture of an acidic N-(long-chain acyl)amino acid containing an inorganic salt and a medium consisting substantially of water and t-butanol into an aqueous layer and an organic layer containing the acidic amino acid and removing the impurity from the organic layer (the step of washing with water).
La présente invention concerne un processus de production d'acide aminé acide N-(chaîne acyle longue), consistant à séparer à une température comprise entre 35 et 80 ·C un mélange d'acide aminé acide N-(chaîne acyle longue) contenant un sel inorganique et un milieu consistant essentiellement d'eau et de t-butanol en une couche aqueuse et une couche organique contenant l'acide aminé acide, et consistant ensuite à retirer les impuretés de la couche organique (l'opération de lavage avec l'eau).
Tamura Yoshinaga
Yamamoto Shinichi
Yamawaki Yukio
Asahi Kasei Kabushiki Kaisha
Goudreau Gage Dubuc
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