Manufacture of anthraquinone

US4002653A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Reuter · Bad Dürkheim, DE
• Heinz Eilingsfeld · Bischofswerda, DE
• Manfred Patsch · Monsheim, DE

Key dates

• Filing date: May 22, 1975
• Grant date: Jan 11, 1977
• Expiry date: May 22, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C46/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Anthraquinone is manufactured by oxidation of diphenylmethane compounds in the gas phase, in the presence of vanadium(V) oxide and titanium dioxide in a specific weight ratio. The anthraquinone which may be manufactured by the process of the invention is a valuable starting material for the manufacture of dyes and pesticides.