Process for the conjugation of the double bonds of polyunsaturated fatty acids and fatty acid mixtures
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorAlfred Struve
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Abstract
A process for the conjugation of the double bonds of polyunsaturated fatty acids or mixtures of fatty acids containing polyunsaturated fatty acids comprising treating said fatty acids with SO.sub.2 in the presence of substoichiometric amounts of soap-forming bases in a closed reaction vessel or in a reaction vessel equipped with a reflux condenser, at a temperature range of from 170.degree. C. to 260.degree. C.; particularly wherein the process is performed in the presence of from 0.5 to 25 mol % of SO.sub.2, 0.5 to 25 mol % of soap-forming alkali metal and/or alkaline earth metal compounds, and 0.05 to 2% by weight, based on the fatty acid starting material, of water.
Claims11
A process for the conjugation of the double bonds of polyunsaturated fatty acids consisting essentially of treating an acidic material consisting essentially of polyunsaturated fatty acids or mixtures of fatty acids containing polyunsaturated fatty acids with SO.sub.2 in the presence of a substoichiometric amount of at least one soap-forming base at a temperature range of from 170.degree. C. to 260.degree. C., and recovering conjugated double bond polyunsaturated fatty acids, wherein said treating step is performed in the presence of from 0.5 to 25 mol %, based on said acidic material of SO.sub.2 ;
- from 0.5 to 25 mol %, based on said acidic material of at least one soap-forming base selected from the group consisting of alkali metal compounds and alkaline earth metal compounds;
- and from 0.05 to 2% by weight, based on said acidic material, of water.
Dependencies are inferred from the claim text.