Process for preparing cyclic diamines

US8592632B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Kirsten Dahmen · Mannheim, DE
• Martin Ernst · Ludwigshafen am Rhein, DE
• Michael Limbach · Worms, DE
• Johann-Peter Melder · Schifferstadt, DE
• Beatrice Rössler-Feigel · Weisenheim am Sand, DE
• Joaquim Henrique Teles · Waldsee, DE

Key dates

• Filing date: Nov 6, 2009
• Grant date: Nov 26, 2013
• Expiry date: Jul 3, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing a cyclic diamine, comprising the reaction of at least one cyclic alkene with a gas mixture (G) comprising dinitrogen the subsequent conversion of monoxide to give at least one cyclic ketone and then converting the at least one cyclic ketone to a cyclic diamine. The invention also relates to the use of a cyclic diamine with primary and secondary amine functions thus obtained to prepare polyamides and polyurethanes.