Semi-transparent interference pigments containing tin

US7708823B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Helge Kniess · Roßdorf, DE
• Klaus Bernhardt · Groß-Umstadt, DE
• Wolf-Dietrich Weber · Pfungstadt, DE
• Gerhard Pfaff · Mainburg, DE

Key dates

• Filing date: Jun 9, 2006
• Grant date: May 4, 2010
• Expiry date: Jun 9, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2991
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to semitransparent interference pigments having a neutral mass tone comprising a substrate and a coating comprising metallic tin and additionally at least one metal oxide, to a process for the preparation of these pigments, and to the use thereof.