Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1995-06-07
1998-05-26
Peselev, Elli
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 185, 536115, 536119, 536127, C07H 100
Patent
active
057567166
ABSTRACT:
Disclosed is a process for manufacturing an sugar ester product of a sugar and a fatty acid. First, a fatty acid and methyl or ethyl alcohol is reacted in the presence of sulfuric acid catalyst to produce a fatty acid ester and water. The sulfuric acid catalyst is neutralized with a metal carbonate to make a metal sulfate, with the fatty acid ester being separated from the metal sulfate, the alcohol and the water. The recovered fatty acid ester is reacted in the presence of a metal carbonate catalyst with sugar dissolved in dimethyl sulfoxide to produce the sugar ester product and alcohol. The dimethyl sulfoxide is separated from the reaction mixture by vacuum distillation, and then water is added to emulsify the sugar ester product and unreacted fatty acid ester. The unreacted sugar and the metal carbonate is dissolved in the water. Next, the emulsified sugar ester product and unreacted fatty acid ester is separated from the water containing dissolved unreacted sugar and metal carbonate by breaking the emulsion of the sugar ester product and unreacted fatty acid ester. The sugar ester product is purified by dissolving the unreacted fatty acid ester in ethyl acetate, and substantially all the dimethyl sulfoxide, alcohol, and ethyl acetate is recovered for reuse in the process. Finally, substantially all the unreacted sugar in a concentrated useful form is recovered.
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Farone William A.
Serfass Robert W.
Connors John J.
Kimball Chase Tech. Ltd.
Peselev Elli
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