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US 5,683,585 AGranted
Process for the removal of organic solvents from waste water
AssigneeHoechst Aktiengesellschaft
InventorsHanswilhelm Bach, Helmut Bahrmann, Jurgen Weber
Life of this patent
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Abstract
Wastewaters resulting from preparation or use of paints comprising organic solvents are purified by extraction with higher monoalcohols, i.e. alcohols having at least 8 carbon atoms in the molecule.
Claims5
A process for purification of wastewaters containing paint as well as substantial amounts of monoalcohols having 3 to 5 carbon atoms and esters thereof with lower monocarboxylic acids, comprising extraction of said wastewater with a monoalcohol having at least 8 carbon atoms.
Dependencies are inferred from the claim text.