Back to results
US 5,811,563 AGranted
Process for the fractionation of wool wax acid mixtures
AssigneeSKW Trotestberg AK
InventorsJurgen Heidlas, Martin Ober, Jan Cully
Life of this patent
Estimating the term…
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.
Claims12
A process for the fractionation of wool wax acid mixtures comprising:
- dissolving the starting material in a polar organic solvent;
- treating the dissolved wool wax acid mixture with gaseous carbon dioxide at a temperature from -5 to 30.degree. C. and at a pressure from 10 to 70 bars whereby a hydroxy-fatty acid fraction is produced as a solid;
- and,
- separating the hydroxy-fatty acid from the solution.
1 more element
Dependencies are inferred from the claim text.