Process for separating aniline derivatives

US4918232A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Josef Buysch · Krefeld, DE
• Michael Hullmann · Bensheim, DE
• Lothar Puppe · Burscheid, DE

Key dates

• Filing date: Jun 29, 1988
• Grant date: Apr 17, 1990
• Expiry date: Jun 29, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/86
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for separating from each other aniline and aniline derivatives having different numbers of C atoms bound to the N atoms is disclosed herein, this process being characterized in that a mixture of the substances mentioned is treated in liquid phase with zeolites of the faujasite type at a temperature from 0.degree. C. to 190.degree. C.