Method for producing urethanes composed of di-functional aromatic amines and dialkyl carbonates

US8729291B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Axel Franzke · Goldkronach, DE
• Robert Baumann · Mannheim, DE
• Michael Bock · Ruppertsberg, DE
• Roderich Roettger · Mannheim, DE
• Andreas Leitner · New Castle, US
• Matthias Kloetzer · Kröppen, DE

Key dates

• Filing date: Aug 18, 2009
• Grant date: May 20, 2014
• Expiry date: Jul 28, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C269/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing urethanes by reacting aromatic diamines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises 2-18 carbon atoms and one or more heteroatoms and the reaction is performed in the presence of a catalyst.