Use of triacids based on alkoxylated tertiary amines as complexing agents

US5907055A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Greindl · Bad Dürkheim, DE
• Birgit Potthoff-Karl · Weinheim, DE
• Alfred Oftring · Bad Dürkheim, DE
• Thomas Fetzer · Speyer, DE
• Richard Baur · Mutterstadt, DE
• Wolfgang Trieselt · Ludwigshafen, DE

Key dates

• Filing date: Jul 28, 1997
• Grant date: May 25, 1999
• Expiry date: Jul 28, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3472
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The use of triacids of the formula I ##STR1## where X.sup.1 to X.sup.3 are, independently of one another, carboxylic acid groups of the formula COOM, sulfonic acid groups of the formula SO.sub.3 M or phosphonic acid groups of the formula PO.sub.3 M.sub.2, where PA1 M is hydrogen, alkali metal, ammonium or substituted ammonium, PA1 A.sup.1 to A.sup.3 are, independently of one another, 1,2-alkylene with 2 to 18 carbon atoms, PA1 R.sup.1 to R.sup.3 are, independently of one another, C.sub.1 -C.sub.8 -alkylene, and PA1 x, y and z are, independently of one another, a number from 0 to 10, where the total of x+y+z must be greater than or equal to 1, as complexing agents for complexing heavy metals or for preparing heavy metal complexes for changing the redox potential, and as builders in detergents and cleaners.