Pigments dispersions based on water and acrylate

US7285592B2 · kind B2 · utility

Assignee

• Clariant Produkte (Deutschland) GmbH · DE

Inventors

• Andreas Harz · Schwalbach, DE
• Heidemarie Menzel · Bad Soden, DE
• Hans-Tobias Macholdt · Darmstadt, DE
• Michael Mueller · Bensheim, DE

Key dates

• Filing date: Jul 12, 2002
• Grant date: Oct 23, 2007
• Expiry date: Jul 1, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an aqueous pigment preparation containing an organic and/or inorganic pigment dispersed in an acrylate resin solution and a dispersion agent. The preparation is characterized in that the acrylate resin is a copolymer consisting essentially of between 50 and 80 mol % of monoalkenyl aromatic compounds and between 20 and 50 mol % of acrylates, and has an average molar mass Mv of between 1,000 and 50,000 g/mol, and in that the dispersion agent is a compound of formula (I): R—O—(CH2-CH2—O)m—CH2—COOM, wherein R is a C10-C20 alkyl radical or a C10-C20 alkenyl radical, m is a number between 1 and 15, and M is a monovalent cation.