Process for preparing carboxylic acid derivatives

US8288583B2 · kind B2 · utility

Assignee

• Evonik RohMax Additives GmbH · DE

Inventors

• Uwe Boehmke · Darmstadt, DE
• Klaus Schimossek · Bensheim, DE
• Detlef Bloos · Eberbach, DE
• Michael Neusius · Darmstadt, DE
• Stephan Massoth · Biblis, DE
• Guenther Graeff · Zwingenberg, DE
• Alexander Dardin · Hemsbach, DE
• Matthias Fischer · Monsheim, DE
• Volker Stephan · Gardelegen, DE

Key dates

• Filing date: Jun 1, 2007
• Grant date: Oct 16, 2012
• Expiry date: Jun 20, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.