Sulfonic acid group-containing polyaspartic acid derivatives, use thereof and preparation thereof

US5506335A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hermann Uhr · Krefeld, DE
• Lutz Heuer · Blomberg, DE
• Torsten Groth · Reinbek, DE
• Winfried Joentgen · Neunburg vorm Wald, DE
• Roland Kleinstuck · Bensberg, DE

Key dates

• Filing date: Nov 9, 1994
• Grant date: Apr 9, 1996
• Expiry date: Nov 9, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23F14/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Sulfonic acid group-containing polyaspartic acid derivatives, some of which are novel, having repeating units of the structures I and II ##STR1## in which R.sup.1 has the meaning given in the description, are suitable for water treatment and as a detergent additive.