Dye composition for dyeing powder coatings

US7241822B2 · kind B2 · utility

Assignee

• Clariant Produkte (Deutschland) GmbH · DE

Inventors

• Felix Grimm · Königsee, DE
• Klaus Kund · Langenscheid, DE
• Wolfgang Winter · Eschborn, DE
• Willi Rauschmann · Frankfurt am Main, DE
• Bernd Nestler · Jena, DE

Key dates

• Filing date: Aug 1, 2002
• Grant date: Jul 10, 2007
• Expiry date: Aug 1, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0092
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a powdery dye composition consisting essentially of C.I. Pigment Red 170 (C.I. No. 12475) and barium sulfate, wherein the barium sulfate is added before or during the production process of the C.I. Pigment Red 170. The inventive addition of barium sulfate enables non-homogeneities and caking to be avoided in the mixture.