Phosphoric esters and their use as dispersants

USRE39746E1 · kind E1 · reissue

Assignee

• GOLDSCHMIDT HOLDING GMBH · 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: May 25, 2004
• Grant date: Jul 31, 2007
• Expiry date: May 25, 2024

Classification

• Technology area (CPC —): General

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.