Fatty acid anhydride process

Details Fatty acid anhydride process Fatty acid anhydride process

1993-08-13

1995-02-07

Henley, III, Raymond J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

554172, 562895, C11C 308

Patent

active

053877055

ABSTRACT:
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.

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