Preparation and use of iminodisuccinic acid salts

US6107518A · 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: Sep 24, 1999
• Grant date: Aug 22, 2000
• Expiry date: Sep 24, 2019

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.