Method for the separation of acids from chemical reaction mixtures by means of ionic fluids

US7351339B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Matthias Maase · Speyer, DE
• Klemens Massonne · Bad Dürkheim, DE
• Klaus Halbritter · Heidelberg, DE
• Ralf Noe · Mannheim, DE
• Michael Bartsch · Neustadt, DE
• Wolfgang Siegel · Schifferstadt, DE
• Veit Stegmann · Mannheim, DE
• Miguel Flores · Mannheim, DE
• Oliver Huttenloch · Ispringen, DE
• Michael Becker · Ludwigshafen, DE

Key dates

• Filing date: Jan 21, 2003
• Grant date: Apr 1, 2008
• Expiry date: May 25, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for removing acids from reaction mixtures using an auxiliary base, in which the auxiliary base: combines with the acid to form a salt which is liquid at temperatures at which the product of value does not significantly decompose during the removal of the liquid salt, and the salt of the auxiliary base with the product of value or the solution of the product of value in a suitable solvent forms two immiscible liquid phases.