Citric esters of polyhydroxy compounds and use thereof in detergents

US5508394A · kind A · utility

Assignee

• BASF SE

Inventors

• Elisabeth Kappes · Schifferstadt, DE
• Alfred Oftring · Bad Dürkheim, DE
• Richard Baur · Mutterstadt, DE
• Alexander Kud · Eppelsheim, DE
• Dieter Boeckh · Schifferstadt, DE
• Heinrich Hartmann · Schifferstadt, DE
• Volker Schwendemann · Neustadt, DE

Key dates

• Filing date: Sep 16, 1993
• Grant date: Apr 16, 1996
• Expiry date: Sep 16, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Esters of citric acid or acetylcitric anhydride with compounds of at least 3 OH groups selected from the group consisting of polyglycerol, sugarcarboxylic acids, alkyl glucosides, derivatives of oligosaccharides, aminosorbitol, aminodisorbitol, glucosamine, triethanolamine and trishydroxyethylmelamine, each OH group of the alcohol component of the esters being esterified on average with from 0.15 to 1 molecule of citric acid or acetylcitric anhydride, are useful as additives in low-phosphate or phosphate-free detergents.