Process for purifying tertiary fatty alkylmethylamines

US5902903A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Bernd Papenfuhs · Obertshausen, DE
• Hubert Seitz · Altötting, DE
• Andreas Gallas · Neuötting, DE

Key dates

• Filing date: Jan 11, 1996
• Grant date: May 11, 1999
• Expiry date: Jan 11, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/84
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In the process described, purification and improvement in odor of, in particular, fatty alkyldimethylamines is achieved by exposing, in the liquid phase, the tertiary amine to be treated to a vacuum or an inert gas stream. By means of the process according to the invention, in a relatively short time and in a simple and economical manner, a tertiary fatty alkylmethylamine is obtained which is essentially trimethylamine-free and improved in odor.