Patent ID: 6042697
Filing Date: 2000-03-28
Classification: C07C

Abstract:
A method for recovering 9,11-Diene C18 fatty acid from a mixture of 9,11-Diene C18 fatty acid and 10,12-Diene C18 fatty acid which comprises distilling a mixture of 9,11-Diene C18 fatty acid and 10,12-Diene C18 fatty in the presence of an azeotrope forming agent, recovering the 9,11-Diene C18fatty acid and the azeotrope forming agent as overhead product and obtaining the 10,12-Diene C18 fatty acid as bottoms product, wherein said azeotrope forming agent consists essentially of one material selected from the group consisting of 3-methyl-2-butanone, nitroethane, 2-nitropropane, N,N-dimethylformamide, amyl acetate, ethyl acetoacetate, 1-decene, propyl formate, butyl ether, butyraldehyde, ethylene glycol dimethyl-ether and methyl pivalate.