Method for the development of δ-lactones and hydroxy acids from unsaturated fatty acids and their glycerides


Ontology type: sgo:Patent     


Patent Info

DATE

1998-12-15T00:00

AUTHORS

ISBELL TERRY A , PLATTNER BETH A , KLEIMAN ROBERT

ABSTRACT

An improved process for the production of high yields of delta -lactones and 5-hydroxy fatty acids from unsaturated fatty acids which are free or esterified with glycerol is disclosed. The delta -lactones may be produced by reacting one or more DELTA 5 or DELTA 6 unsaturated fatty acids in the presence of an acid, clay or zeolite catalyst. Alternatively, the delta -lactones may be produced by reacting one or more triglycerides which are esters of glycerol with DELTA 5 or DELTA 6 unsaturated fatty acids with the same catalysts. Because the delta -lactones may be produced from the triglycerides of unsaturated fatty acids, the process may be practiced using naturally occurring plant oils directly, without the need for any preliminary steps of saponification. Optionally, the delta -lactones so formed may be further reacted with an alkali in an aqueous solution to produce 5-hydroxy fatty acids. More... »

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