Process for the preparation of urethanes

US4480110A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Heitk/a/ mper · Dormagen, DE
• Rudolf Fauss · Cologne, DE
• Kurt Findeisen · Odenthal, DE
• Stefan Penninger · Pulheim, DE
• Hans-Joachim Scholl · Cologne, DE

Key dates

• Filing date: Jan 9, 1984
• Grant date: Oct 30, 1984
• Expiry date: Jan 9, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/91
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of N,O-disubstituted urethanes. A substituted urea, an alcohol and a compound taken from the group consisting of N-unsubstituted urethanes, urea, polyurets and mixtures thereof at a temperature of 120.degree.-350.degree. C. The urethanes prepared by this process are particularly suitable for the preparation of isocyanates.