Method for producing toluylenediamine by hydrogenating dinitrotoluene

US8614356B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Joana Coelho Tsou · Heidelberg, DE
• Steffen Oehlenschlaeger · Ludwigshafen, DE
• Ekkehard Schwab · Neustadt, DE
• Wolfgang Mackenroth · Bad Dürkheim, DE
• Hartwig Voss · Bischofswerda, DE
• Stefan Maixner · Schwetzingen, DE
• Samuel Neto · Brussels, BE
• Sven Boehmeke · Senftenberg - Zły Komorow, DE
• Frederik van Laar · Dubai, AE

Key dates

• Filing date: Dec 21, 2009
• Grant date: Dec 24, 2013
• Expiry date: Mar 31, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/36
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing tolylenediamine by hydrogenating dinitrotoluene with hydrogen in the presence of a suspended catalyst