Preparation of pure triethylenediamine

US6627756B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Hartmut Riechers · Neustadt, DE
• Arthur Hohn · Tauberbischofsheim, DE
• Joachim Simon · Grevenbroich, DE
• Ortmund Lang · Quirnbach, DE
• Hartmut Schoenmakers · Heidelberg, DE
• Matthias Rauls · Ludwigshafen, DE
• Koen Claerbout · Wardenburg, DE

Key dates

• Filing date: Jul 11, 2000
• Grant date: Sep 30, 2003
• Expiry date: Aug 14, 2020

Classification

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

Abstract

Pure triethylenediamine (TEDA) is prepared by vaporizing TEDA, introducing the gaseous TEDA into a liquid solvent and subsequently crystallizing the TEDA from the solution obtained in this way.