Preparation and use of iminodisuccinic acid salts

US6207010A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Torsten Groth · Reinbek, DE
• Winfried Joentgen · Neunburg vorm Wald, DE
• Paul Wagner · Mülheim an der Ruhr, DE
• Frank Dobert · Earlton, US
• Eckhard Wenderoth · Leverkusen, DE
• Thomas Roick · Leverkusen, DE

Key dates

• Filing date: Jun 1, 2000
• Grant date: Mar 27, 2001
• Expiry date: Jun 1, 2020

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21C9/163
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for the preparation of iminodisuccinic acid alkali metal salts by reaction of maleic acid and ammonia in an aqueous medium in the presence of alkali metal hydroxides and working up thereof.