Process for preparing guanidino acetic acid

US10844009B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Timo Stahl · Limeshain, DE
• Patrik Stenner · Hanau, DE
• Cornelia Borgmann · Frankfurt, DE
• Christian Renner · Grundau, DE
• Axel Ronneburg · Hanau, DE

Key dates

• Filing date: Dec 31, 2019
• Grant date: Nov 24, 2020
• Expiry date: Dec 31, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2311/2649
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention pertains to a process for preparing guanidino acetic acid (GAA) from cyanamide and glycine in alkaline process solution, in which anionic impurities are removed from the process solution by electrodialysis.