Title:
METHOD OF INDUSTRIAL-SCALE PURIFICATION OF LACTIC ACID
Document Type and Number:
Japanese Patent JP2011074084
Kind Code:
A
Abstract:
To provide a method of industrial-scale purification of lactic acid, and to provide chirally extremely pure products obtained via this method and the use thereof.
The method includes the steps of: (a) reduced-pressure distillation of a concentrated lactic acid solution having a total acid content of at least 95 wt.% and a content of monomeric lactic acid of at least 80 wt.%, based on the concentration of concentrated lactic acid solution, the ratio between the lactic acid enantiomer and enantiomer in the concentrated lactic acid solution not being equal to 1; and (b) subjecting the concentrated lactic acid solution to crystallization to form a pure lactic acid.
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Inventors:
BREUGEL JAN VAN (NL)
KRIEKEN JAN VAN (NL)
CERDA BARO AGUSTI (ES)
VIDAL LANCIS JOSE MARIA (ES)
CAMPRUBI VILA MARGARITA (ES)
KRIEKEN JAN VAN (NL)
CERDA BARO AGUSTI (ES)
VIDAL LANCIS JOSE MARIA (ES)
CAMPRUBI VILA MARGARITA (ES)
Application Number:
JP2010292892A
Publication Date:
April 14, 2011
Filing Date:
December 28, 2010
Export Citation:
Assignee:
PURAC BIOCHEM BV (NL)
International Classes:
A61K31/19; C07B57/00; C07C51/43; C07C51/44; C07C51/47; C07C59/08; C12P7/56
Domestic Patent References:
JPH07165753A | 1995-06-27 | |||
JPH0365192A | 1991-03-20 | |||
JPH07118259A | 1995-05-09 | |||
JPH08119961A | 1996-05-14 | |||
JPH10279577A | 1998-10-20 | |||
JPH04503817A | 1992-07-09 | |||
JPH04244042A | 1992-09-01 | |||
JPH04501652A | 1992-03-26 | |||
JPH07138253A | 1995-05-30 | |||
JPS59139391A | 1984-08-10 | |||
JPS5665841A | 1981-06-03 |
Foreign References:
WO1998055442A1 | 1998-12-10 | |||
US5641406A | 1997-06-24 | |||
US2013104A | 1935-09-03 |
Other References:
JPN5002007306; H.BORSOOK: JOURNAL OF BIOLOGICAL CHEMISTRY V102, 1933, P450-452, AMERICAN SOCIETY OF BIOLOGICAL CHEMISTS
JPN6008060762; 日本化学会編: 実験化学講座1 基本操作I 第4版, 19901105, p.161-163,214-226, 丸善株式会社
JPN7013004513; 化学大辞典6 , 19890815, 第809頁, 共立出版株式会社
JPN6008060762; 日本化学会編: 実験化学講座1 基本操作I 第4版, 19901105, p.161-163,214-226, 丸善株式会社
JPN7013004513; 化学大辞典6 , 19890815, 第809頁, 共立出版株式会社
Attorney, Agent or Firm:
Patent business corporation Odashima patent office
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