Separation of n-methylethylenediamine from EDA-containing mixtures

US12398090B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Michael Joedecke · Ludwigshafen am Rhein, DE
• Joerg Pastre · Ludwigshafen, DE

Key dates

• Filing date: Dec 3, 2020
• Grant date: Aug 26, 2025
• Expiry date: Nov 3, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing EDA from a mixture comprising water (H2O), ethylenediamine (EDA) and N-methylethylenediamine (NMEDA) by feeding the mixture into a rectification column, wherein the rectification column is operated at the top pressure in the range of 5.0 to 7.5 bar.