Continuous adiabatic process for preparing nitrochlorobenzene

US6586645B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ralf Demuth · Hilden, DE
• Bernd-Michael Konig · Düsseldorf, DE
• Thomas Linn · Grevenbroich, DE
• Hans-Joachim Raatz · Leverkusen, DE
• Hans-Martin Weber · Leverkusen, DE
• Eberhard Zirngiebl
• Ricarda Leiberich · Langen, DE

Key dates

• Filing date: Feb 19, 2002
• Grant date: Jul 1, 2003
• Expiry date: Feb 19, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C201/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a continuous adiabatic process for preparing nitrochlorobenzene, in which the waste sulfuric acid produced during the practice of the process is reconcentrated and recycled into the nitration reaction.