Title:
METHOD FOR PRODUCING PURIFIED METHIONINE AND METHOD FOR PREVENTING CAKING OF METHIONINE
Document Type and Number:
WIPO Patent Application WO/2019/017415
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method for producing purified methionine, the method being capable of preventing the caking of methionine. The present invention pertains to a method for producing purified methionine from crude methionine, the method comprising (1) a step for obtaining a wet cake of washed crude methionine, (2) a step for adjusting the pH of the wet cake, and (3) a step for drying the wet cake after the pH adjustment, wherein the pH of the wet cake after the pH adjustment is 5.2-6.1.
Inventors:
KOIZUMI YOSHIYUKI (JP)
YAMASHIRO NAOYA (JP)
MORIMOTO AKIRA (JP)
YAMASHIRO NAOYA (JP)
MORIMOTO AKIRA (JP)
Application Number:
PCT/JP2018/027014
Publication Date:
January 24, 2019
Filing Date:
July 19, 2018
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C07C319/28; C07C323/58
Domestic Patent References:
| WO2017000867A1 | 2017-01-05 | |||
| WO2013129405A1 | 2013-09-06 |
Foreign References:
| JP2000143617A | 2000-05-26 | |||
| JP2006070024A | 2006-03-16 | |||
| US2443391A | 1948-06-15 | |||
| JPS4986320A | 1974-08-19 | |||
| JP2017140093A | 2017-08-17 | |||
| JP2000143617A | 2000-05-26 | |||
| JP2007063141A | 2007-03-15 |
Other References:
See also references of EP 3656761A4
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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