Separation process

US4254062A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Raimund Wambach · Leverkusen, DE
• Sigurd Hartung · Cologne, DE
• Gerhard Reiss · Krefeld, DE
• Lothar Puppe · Burscheid, DE

Key dates

• Filing date: Jan 10, 1979
• Grant date: Mar 3, 1981
• Expiry date: Jan 10, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/389
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the separation of isomeric dichlorotoluenes is described wherein an isomeric mixture of dichlorotoluenes is passed over a zeolite of the X or Y type, non-adsorbed dichlorotoluene is separated off and the adsorbed dichlorotoluene is eluted from the zeolite by contacting the same with an eluant.