Production method of pyrrolidone carboxylic acid and salt thereof
AssigneeAjinomoto Co., Inc.
InventorsYuichi Suzuki, Ryosuke Yumioka, Tatsuru Tabobashi
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Abstract
The present invention provides a production method of pyrrolidone carboxylic acid or a salt thereof, which includes bringing glutamic acid or a salt thereof into contact with high-temperature high-pressure water having a temperature of above 100° C. and not higher than 300° C., and a pressure higher than the vapor pressure of water at this temperature. The present invention affords efficient production and supply of pyrrolidone carboxylic acid or a salt thereof from glutamic acid or a salt there.
Claims10
A production method of pyrrolidone carboxylic acid or a salt thereof, which comprises contacting glutamic acid or a salt thereof with high-temperature, high-pressure water, wherein the reaction temperature ranges from 100° C. to 300° C., wherein said contacting is for a time ranging from 20 to 500 sec, and wherein said contacting is under an applied pressure which is greater than a the vapor pressure of water at said reaction temperature.
Dependencies are inferred from the claim text.