Process for the fractionation of wool wax acid mixtures

US5811563A · kind A · utility

Assignee

• SKW Trotestberg AK · DE

Inventors

• Jurgen Heidlas · Trostberg, DE
• Martin Ober · Cham, DE
• Jan Cully · Garching bei München, DE

Key dates

• Filing date: Mar 12, 1996
• Grant date: Sep 22, 1998
• Expiry date: Mar 12, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/74
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a process for the fractionation of wool wax acid mixtures by dissolving the starting material in a polar organic solvent (mixture). The dissolved wool wax acid mixture is treated at a temperature between -5 and 30.degree. C. and at a pressure between 10 and 70 bar with gaseous carbon dioxide and the hydroxy-fatty acids that accumulate as a solid are separated from the solution.