Patent Number: 7,132,051

Title: Liquid-liquid extraction of polar organic substances from their aqueous solutions with fluorinated extracting liquids

Abstract: A liquid-liquid extraction process of ketones, alcohols, aldehydes, alkyl esters of carboxylic acids, carboxylic acids, ethers, amines and heterocyclic compounds, from their aqueous solutions, comprising the addition under stirring to said aqueous solutions of a fluorinated extracting liquid selected from A) hydrofluoropolyethers, B) hydrofluorocarbons, C) hydrofluoroethers, or mixtures thereof, with formation of an aqueous phase and of an organic phase; the separation of the organic phase from the aqueous phase; the fractional distillation of the organic phase to separate the polar organic substance from the extractant.

Inventors: Marchionni; Giuseppe (Milan, IT), De Patto; Ugo (Milan, IT), Avataneo; Marco (Milan, IT)

Assignee: Solvay Solexis, S.p.A.

International Classification: B01D 11/00 (20060101)

Expiration Date: 2019-11-07 0:00:00