Preparation of bis-(4-chlorophenyl) sulfone

US4983773A · kind A · utility

Assignee

• BASF SE

Inventors

• Michael Stumpp · Deidesheim, DE
• Peter Neumann · Wiesloch, DE
• Heinz Eilingsfeld · Bischofswerda, DE

Key dates

• Filing date: Oct 5, 1989
• Grant date: Jan 8, 1991
• Expiry date: Oct 5, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C315/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Bis-(4-chlorophenyl) sulfone is prepared by reacting chlorobenzene with sulfuric acid at from 200.degree. to 250.degree. C. by a process in which a condensing agent is added.