Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 16, 2008
Patent Application Number
11573728
Date Filed
August 12, 2005
Patent Primary Examiner
Patent abstract
The present invention provides a process for producing 2-hydroxy-4-methylthiobutyric acid comprising the following steps (1) to (4):(1): hydrolyzing 2-hydroxy-4-methylthiobutyronitrile in the presence of sulfuric acid,(2): separating the reaction mixture obtained in the step (1) into an oil layer containing 2-hydroxy-4-methylthiobutyric acid and a water layer,(3): concentrating the oil layer obtained in the step (2), and(4) heating the concentrated product obtained in the step (3).
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