Pigment preparations, a process for preparing pigment preparations and use thereof

US6569231B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Johann Mathias · Maintal, DE
• Horst Kleinhenz · Großkrotzenburg, DE
• Alfons Karl · Hanau, DE
• Gerd Tauber · Seligenstadt, DE

Key dates

• Filing date: Oct 16, 2000
• Grant date: May 27, 2003
• Expiry date: Oct 16, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/005
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A pigment preparation, containing a pigment and/or carbon black and a polymer and/or a surfactant selected from the group of cross-linked polyoxyethyleneacrylic acid, fatty alcohol polyglycol ethers, polyvinylpyrrolidone, alcohol alkoxylates, lignin sulfonates, alkylphenol polyglycol ethers, naphthalene sulfonic acid derivatives or mixtures thereof which is prepared from an aqueous dispersion by freeze-drying. The pigment preparation can be used for coloring purposes and/or to provide antistatic characteristics in water-based coloring and lacquer systems, disperse dyes, printing inks, inking systems and coating systems.