Phosphoric esters and their use as dispersants

US6423130B1 · kind B1 · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Tammo Boinowitz · Essen, DE
• Eberhard Esselborn · Essen, DE
• Arno Knebelkamp · Essen, DE
• Christian Psiorz · Essen, DE
• Stefan Silber · Krefeld, DE
• Stefan Stadtmuller · Essen, DE
• Ellen Wallhorn · Essen, DE

Key dates

• Filing date: Apr 10, 2001
• Grant date: Jul 23, 2002
• Expiry date: Apr 10, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/932
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to phosphoric esters of the general formula I where X is 1 or 2; n is from 2 to 18; m and o are each from 2 to 100; k is from 2 to 4; R″ is H or a linear or branched alkyl radical; and R′ is an alkyl, alkaryl, alkenyl, or sulfopropyl radical, and to there use as dispersants for pigments and fillers in aqueous or organic media.