Interference pigment with a high covering power

US7611574B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Helge Kniess · Roßdorf, DE
• Gerhard Pfaff · Mainburg, DE
• Klaus Bernhardt · Groß-Umstadt, DE

Key dates

• Filing date: May 5, 2004
• Grant date: Nov 3, 2009
• Expiry date: Jan 29, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2993
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to an interference pigment with a high covering power, comprising at least one FeTiO3-containing layer, which is applied to a lamellar inorganic substrate and whose thickness and absorbing power can be precisely set. The invention also relates to a method for producing this interference pigment and to the use thereof.