Water treatment/cleaning composition comprising polyaspartic acid or derivatives thereof and phosphonic acid

US5523023A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Roland Kleinstuck · Bensberg, DE
• Hermann Sicius · Düsseldorf, DE
• Torsten Groth · Reinbek, DE
• Winfried Joentgen · Neunburg vorm Wald, DE

Key dates

• Filing date: Oct 7, 1994
• Grant date: Jun 4, 1996
• Expiry date: Oct 7, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23F14/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An improved composition for water treatment and for alkaline cleaning contains polyaspartic acid or a derivative thereof and a phosphonic acid.