PVD-metallic effect pigments with diffractive structure and metal nanoparticles, process for preparing them and use thereof

US9453131B2 · kind B2 · utility

Assignee

• ECKART GmbH · DE

Inventors

• Bernhard Geissler · Schwarzenbruck, DE
• Martin Fischer · Ludwigshafen, DE
• Frank Henglein · Nuremberg, DE
• Ralph Schneider · Achern, DE
• Wolfgang Herzing · Neunkirchen, DE
• Klaus Greiwe · Lautenbächle, DE

Key dates

• Filing date: Jul 21, 2011
• Grant date: Sep 27, 2016
• Expiry date: Jul 27, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/258
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to metallic effect pigment, the metallic effect pigment having at least one diffractive structure and at least one layer which comprises metal nanoparticles and metal oxide phase, the metal of the metal oxide phase and the metal of the metal nanoparticles in this at least one layer being identical. The invention further relates to a process for preparing these metallic effect pigments, to a coating composition, and to a coated article.