Process for the preparation of benzoic anhydride

US4562010A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl Goliasch · Wittlich, DE
• Herbert Muller · Bischofswerda, DE
• Heinrich Pelster · Odenthal, DE

Key dates

• Filing date: Feb 20, 1985
• Grant date: Dec 31, 1985
• Expiry date: Feb 20, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/56
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing benzoic anhydride which comprises contacting benzotrichloride with benzoic acid in a molar ratio of 1:2-3 at a temperature in the range of 100.degree.-200.degree. C.