Red-coloured decorative pigments with high chroma and high brilliancy, method for their production and use of same

US11202739B2 · kind B2 · utility

Assignee

• ECKART GmbH · DE

Inventors

• Michael Grüner · Zwingenberg, DE
• Günter Kaupp · Jessenitz Siedlung, DE
• Ralph Schneider · Achern, DE

Key dates

• Filing date: Dec 21, 2015
• Grant date: Dec 21, 2021
• Expiry date: Dec 5, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2220/106
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to red effect pigments including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one of metal oxide, metal hydroxide or metal oxide hydrate, the metal ions of the metal oxide, metal hydroxide and/or metal oxide hydrate comprise at least two different metal ions selected from the group of metals consisting of Fe, Sn, Ti and Zr, and to a process for production thereof and to the use of the red effect pigments.