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US 4,536,332 AGranted
Tall'oil fatty acids-quality improvement
AssigneeArizona Chemical Company
InventorsCurry B. Davis, Americo G. P. Frade
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Abstract
Distilled tall oil fatty acids are improved by irradiation which isomerizes trans-dimethoxystilbene (trans-DMS) impurity to cis-dimethoxystilbene which is easily removed by fractional distillation. Thus, the trans-DMS is removed without loss of fatty acid components from the distilled tall oil fatty acid.
Claims3
A process comprising selective photolysis of trans-3,5-dimethoxystilbene to cis-3,5-dimethoxystilbene in distilled tall oil fatty acid by irradiation of the distilled tall oil fatty acid with artificially generated actinic radiation.
Dependencies are inferred from the claim text.