Title:
METHOD FOR PRODUCING N-ACYL ACIDIC AMINO ACID CRYSTAL
Document Type and Number:
WIPO Patent Application WO/2003/074472
Kind Code:
A1
Abstract:
A method for producing crystals of N-acyl acidic amino acid which comprises cooling a mixture of N-acyl acidic amino acid or a salt thereof, a tertiary amine and water at a pH of 1 to 3 from a temperature of 65&ring C or higher. The method allows the production of N-acyl acidic amino acid which is reduced in odor.
Inventors:
ATARASHI YASUNORI (JP)
YOSHIHARA HIDEKI (JP)
YOSHIHARA HIDEKI (JP)
Application Number:
PCT/JP2003/002170
Publication Date:
September 12, 2003
Filing Date:
February 26, 2003
Export Citation:
Assignee:
AJINOMOTO KK (JP)
ATARASHI YASUNORI (JP)
YOSHIHARA HIDEKI (JP)
ATARASHI YASUNORI (JP)
YOSHIHARA HIDEKI (JP)
International Classes:
A61K8/30; A61K8/02; A61K8/44; A61Q19/00; C07C231/24; C07C233/47; C07C233/49; C11D1/10; (IPC1-7): C07C231/24; A61K7/00; A61K7/46; C07C233/47; C07C233/49; C11D1/10
Foreign References:
| JP2003096038A | 2003-04-03 | |||
| JP2003096039A | 2003-04-03 | |||
| US3836551A | 1974-09-17 | |||
| JPS4835058B1 | 1973-10-25 | |||
| JPS4969601A | 1974-07-05 | |||
| EP0699656A2 | 1996-03-06 |
Attorney, Agent or Firm:
Takahashi, Fumiko c/o AJINOMOTO CO. (INC. Intellectual Property Department 1-1 Suzuki-ch, Kawasaki-ku Kawasaki-shi Kanagawa, JP)
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