Method for producing benzoic acid esters

US8022244B2 · kind B2 · utility

Assignee

• Evonik Oxeno GmbH · DE

Inventors

• Michael Grass · Bend, US
• Dietmar Gubisch · Marl, DE
• Michael Woelk-Faehrmann · Marl, DE

Key dates

• Filing date: Jun 17, 2008
• Grant date: Sep 20, 2011
• Expiry date: Jun 17, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L27/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing benzoic esters whose alkoxy groups have from 7 to 13 carbon atoms by reacting benzoic acid with at least one alcohol having from 7 to 13 carbon atoms, the water of reaction formed being removed during the esterification reaction by distillation, and the alcohol not converted in the esterification reaction being removed after the esterification reaction, in which the reaction takes place in the presence of a tin(II) compound as catalyst and, without treatment with a base, the catalyst and/or its derivatives is/are separated off by filtering or by centrifuging from the reaction mixture which remains after the unconverted alcohol has been separated off.