Liquid-liquid extraction of polar organic substances from...

Details Liquid-liquid extraction of polar organic substances from... Liquid-liquid extraction of polar organic substances from...

2006-11-07

2006-11-07

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C203S039000, C203S071000, C210S774000

Reexamination Certificate

active

07132051

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 fromA) 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.

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