Fatty acid anhydride process

A fast, three-stage, low temperature process for the conversion of fatty acids into food grade-anhydrides is disclosed. The process comprises as a first step the reaction of a higher fatty acid with a dehydrating agent under mild conditions. A second process step comprises the further conversion of...

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Bibliographische Detailangaben
Hauptverfasser:	KLUESENER, BERNARD W, STIPP, GORDON K
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY CHEWING GUM COCOA COCOA PRODUCTS, e.g. CHOCOLATE CONFECTIONERY DETERGENTS FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM FATTY ACIDS FROM FATS, OILS OR WAXES FATTY ACIDS THEREFROM FOODS OR FOODSTUFFS HUMAN NECESSITIES ICE-CREAM METALLURGY PREPARATION THEREOF SUBSTITUTES FOR COCOA OR COCOA PRODUCTS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	A fast, three-stage, low temperature process for the conversion of fatty acids into food grade-anhydrides is disclosed. The process comprises as a first step the reaction of a higher fatty acid with a dehydrating agent under mild conditions. A second process step comprises the further conversion of mixed anhydrides to symmetrical anhydrides by continuous removal of the dehydrating agent and by-product acid from the reaction mixture under vacuum. In a third process step, the symmetrical anhydrides are purified under mild conditions, preferably using thin-film short path evaporation. The resulting anhydrides have minimal by-products and good color and odor.