Isomerization of MDACH

US10329238B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Andreas Weickgenannt · Ludwigshafen, DE
• Sandra Kramp · Mannheim, DE
• Jan-Oliver Weidert · Schifferstadt, DE
• Alexander Panchenko · Ludwigshafen, DE
• Artur KOZICKI · Bad Dürkheim, DE
• Ralph Busch · Olney, US

Key dates

• Filing date: Nov 30, 2016
• Grant date: Jun 25, 2019
• Expiry date: Nov 30, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for isomerizing a starting mixture comprising 2,4-diamino-1-methylcyclohexane, 2,4-MDACH for short, 2,6-diamino-1-methylcyclohexane, 2,6-MDACH for short, or mixtures thereof, wherein the isomerization is carried out in the presence of a supported catalyst with zirconium dioxide as support and ruthenium as active metal.