Manufacture of salts of dicarboxylic acids and diamines

US4305888A · kind A · utility

Assignee

• BASF SE

Inventors

• Rudolf Kummer · Bischofswerda, DE
• Rolf Platz
• Heinz-Walter Schneider · Ludwigshafen, DE

Key dates

• Filing date: Jul 8, 1977
• Grant date: Dec 15, 1981
• Expiry date: Jul 8, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C55/21
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the manufacture of salts of alkanedicarboxylic acids of 4 to 12 carbon atoms and alkanediamines of 3 to 14 carbon atoms, comprising reacting esters of alkanols of 1 to 4 carbon atoms and alkanedicarboxylic acids of 4 to 12 carbon atoms with alkanediamines of 3 to 14 carbon atoms in stoichiometric amounts in the presence of water at an elevated temperature, with continuous removal of the alkanols formed, in which process the reaction is carried out, from the start, in the presence of the particular salt of alkanedicarboxylic acid and alkanediamine which is to be manufactured.