Manufacture of conjugated linoleic salts and acids

US6897327B2 · kind B2 · utility

Assignee

• STEPAN COMPANY · US

Inventors

• Joseph C. Rongione · Middletown, US
• Jenifer Heydinger Galante · Oakland, US
• Steven L. Clauss · Manville, US
• Randal J. Bernhardt · Antioch, US
• Phouvieng Xayariboun · North Aurora, US

Key dates

• Filing date: May 8, 2003
• Grant date: May 24, 2005
• Expiry date: May 8, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/09
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process to manufacture conjugated linoleic acid (CLA)-containing materials such as conjugated linoleic salts and acids that are enriched in desirable cis-9, trans-11- and trans-10, cis-12-CLA isomers and are low in certain undesirable isomers. The process generally entails isomerization of an alkyl ester of a linoleic acid-containing material at a temperature typically between about 90 to 140° C. to effectuate conjugation of the double bonds, followed by saponification of the resultant CLA-containing fatty acid ester to produce a CLA-containing fatty acid salt, optionally followed by neutralization of the CLA-containing fatty acid salt with an acid source to produce a CLA-containing fatty acid.