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US 5,194,640 AGranted
Process for making high-purity oleic acid
AssigneeWestvaco Corporation
InventorsJohn P. Cosgrove, J. George Hayden, Philip L. Robinson
Life of this patent
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Abstract
An oleic acid containing adduct is produced by reacting tall oil fatty acid (which contains pre-conjugated linoleic acid) with a dienophile at a temperature between 180.degree. C. and 300.degree. C. No catalyst or solvent is necessary for the reaction to occur. The adduct is subsequently distilled to yield a high-purity, light color oleic acid.
Claims4
A process for the production of oleic acid, comprising:
- (a) reacting in a cycloaddition reaction 100 parts by weight of a tall oil fatty acid mixture containing conjugated linoleic acid, in the absence of a catalyst, with
- (b) from 1 to 26 parts by weight of a dienophile,
- (c) at a temperature between 180.degree. C. to 300.degree. C. for a period of 0.5 to 12.0 hours to produce a linoleic acid containing adduct, and
- (d) distilling and recovering the oleic acid fraction from the said adduct.
1 more element
Dependencies are inferred from the claim text.