Method for producing toluenediamine

US10155720B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Bernd Pennemann · Moitzfeld, DE
• Antoni Mairata · Düsseldorf, DE
• Antonia Zock · Neuss, DE

Key dates

• Filing date: May 11, 2015
• Grant date: Dec 18, 2018
• Expiry date: May 11, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention concerns a method for producing toluenediamine by hydrogenation of dinitrotoluene in the presence of a catalyst, a dinitrotoluene being used as starting material and being processed by applying an electrical voltage.