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

US5726280A · 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: Apr 8, 1996
• Grant date: Mar 10, 1998
• Expiry date: Apr 8, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23F14/02
• WIPO field: Surface technology, coating
• 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 ##STR2## are suitable for water treatment and as a detergent additive.