Process for extracting nitrohydroxyaromatics from aqueous solutions

US4814518A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Helmut Gossel · Frankfurt am Main, DE
• Herbert Kuckertz · Kelkheim, DE
• Siegbert Rittner · Mörfelden, DE
• Josef Rosenfelder · Hofheim, DE
• Bernhard Wojtech · Bad Soden am Taunus, DE

Key dates

• Filing date: Aug 12, 1987
• Grant date: Mar 21, 1989
• Expiry date: Aug 12, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for extracting nitrohydroxyaromatics from aqueous solutions. In this process, the extracting agent used is an amine salt which comprises an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt can be employed undiluted or diluted with an organic solvent.