Production of sodium diformate

US7612233B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alexander Hauk · Ludwigshafen, DE
• Stefan Gropp · Speyer, DE
• Robert W. Lenz · Hochdorf-Assenheim, DE
• Daniela Rieck · Alzey, DE
• Jorg Heilek · Bammental, DE
• Gerhard Laux · Bischofswerda, DE

Key dates

• Filing date: May 2, 2006
• Grant date: Nov 3, 2009
• Expiry date: May 2, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/412
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The calculation of the above balance shows that the division of stream (5) into the streams (5a) and (5b) used here leads to the fact that in the neutralization stage no excess sodium formate is produced, so that any ejection can be omitted. Furthermore, the water content of the stream (14) comprising sodium formate recirculated to the first crystallization stage in this case can be set to a very low value.