Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions and process for the preparation thereof

US5786313A · kind A · utility

Assignee

• BASF SE

Inventors

• Juergen Schneider · Freinsheim, DE
• Birgit Potthoff-Karl · Weinheim, DE
• Alexander Kud · Eppelsheim, DE
• Richard Baur · Mutterstadt, DE
• Alfred Oftring · Bad Dürkheim, DE
• Thomas Greindl · Bad Dürkheim, DE

Key dates

• Filing date: Nov 24, 1995
• Grant date: Jul 28, 1998
• Expiry date: Nov 24, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/20
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Disclosed is the use of glycine-N,N-diacetic acid derivatives as their alkali metal, alkaline earth metal, ammonium and substituted ammonium salts as complexing agents for alkaline earth and heavy metal ions, except with .alpha.-alanine-N,N-diacetic acid, as textile detergent builders in powdered detergent formulations and as calcium sequestering agents in oral hygiene products.