Phosphoric esters and their use as dispersants

US6310123A · kind A · utility

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: Feb 17, 1999
• Grant date: Oct 30, 2001
• Expiry date: Feb 17, 2019

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): ##STR1## wherein PA1 x is 1 or 2; PA1 n is a number from 2 to 18; PA1 m and n are each a number from 2 to 100; PA1 k is a number from 2 to 4; PA1 R" is H or a linear or branched alkyl radical which may be substituted by a functional radical; and PA1 R' is an alkyl, alkaryl, alkenyl or a sulfopropyl radical. The invention further relates to the use of the phosphoric esters as dispersants for pigments and fillers in aqueous or organic media and in particular to methods of forming a highly filled sheet molding compound or bulk molding compound comprising the step of dispersing components of the molding compound with said phosphoric esters.