Process for the production of a dinitronaphthalene isomer mixture with a high proportion of 1,5-dinitronaphthalene

US6737554B2 · kind B2 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Matthias Brandt · Wuppertal, DE
• Stephan Klein · Mettmann, DE
• Gerhard Wegener · Mettmann, DE

Key dates

• Filing date: Feb 28, 2003
• Grant date: May 18, 2004
• Expiry date: Feb 28, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C263/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the production of a dinitronaphthalene isomer mixture, in which naphthalene and/or 1-nitronaphthalene is reacted with nitric acid in the presence of a zeolite.