Process for the production of urethanes

US4219661A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Robert Becker · Warsaw, US
• Johann Grolig · Leverkusen, DE
• Christian Rasp · Cologne, DE
• Gerhard Scharfe · Leverkusen, DE

Key dates

• Filing date: Apr 23, 1979
• Grant date: Aug 26, 1980
• Expiry date: Apr 23, 1999

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J23/44
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to an improved process for the production of urethanes (i.e. carbamic acid esters) by reacting organic nitro compounds with carbon monoxide and organic compounds containing at least one hydroxy group in the presence of a unique catalyst system. The catalyst system consists of palladium or a palladium compound and iron oxychloride or a mixture of iron compounds containing iron oxychloride.