Process for removing halogenated hydroxyaromatics from aqueous solutions

US4864065A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Bernhard Wojtech · Bad Soden am Taunus, DE
• Siegbert Rittner · Mörfelden, DE
• Heinz Reiss · Hofheim, DE
• Reinhard Zunder · Kelkheim, DE

Key dates

• Filing date: Jun 1, 1988
• Grant date: Sep 5, 1989
• Expiry date: Jun 1, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/26
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The invention relates to a process for extracting halogenated hydroxyaromatics from aqueous solutions. In this process, the extractant used is an amine salt comprising an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt may be employed in undiluted form or diluted with an organic solvent.