Process for the preparation of highly pure triethylene diamine

US7151177B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Ortmund Lang · Quirnbach, DE
• Bernd Rumpf · Hockenheim, DE
• Matthias Frauenkron · Freinsheim, DE
• Thomas Manderbach · Ludwigshafen, DE
• Bernd Stein · San Diego, US

Key dates

• Filing date: Sep 11, 2002
• Grant date: Dec 19, 2006
• Expiry date: May 14, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D487/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly pure solutions of triethylenediamine. Crystallization is generally unnecessary.