Process for dispersing undissolved solid, organic or inorganic colorant particles

US3992343A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Heinz Haschke · Bad Sankt Leonhard im Lavanttal, AT
• Gerhard Morlock · Hanau, DE
• Horst Kruger
• Gerhard Hebbel

Key dates

• Filing date: Jul 24, 1973
• Grant date: Nov 16, 1976
• Expiry date: Jul 24, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for dispersing solid, organic or inorganic colorant particles or mixtures thereof in a system comprised mainly of water by mixing into the aqueous system about 0.05 to 10% by weight of at least one dispersing agent comprising a polymer derived from specified units containing carboxyl, carboxylate, carbonyl and/or hydroxyl groups. A dispersing agent and an aqueous dispersion are provided. The process is particularly useful for dispersing pigments in aqueous systems.