Process for preparing aromatic amines

US8981155B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Stefanie Haase · Pulsnitz, DE
• Dusko Kadijevic · Dresden, DE
• Anne-Kathrin Merten · Schwarzheide, DE
• Michael Zoellinger · Eislingen/Fils, DE
• Andreas Raichle · Ludwigshafen, DE
• Alexander Schocker · Mannheim, DE
• Sandra Mühlbeyer · Bischofswerda, DE
• Olaf Wiedenhoff · St. Leon-Rot, DE
• Joana Coelho Tsou · Hulshout, BE

Key dates

• Filing date: Dec 5, 2011
• Grant date: Mar 17, 2015
• Expiry date: Dec 15, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/0024
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing aromatic amines by hydrogenation of nitroaromatics in the presence of catalysts, forming a fluid, amine-comprising reaction mixture in a reactor, wherein chromatographic analysis of the reaction mixture is carried out to determine the concentration of nitro and nitroso compounds in the reaction mixture.