Colored interference pigment

US6508876B1 · kind B1 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Klaus Bernhardt · Groß-Umstadt, DE
• Hans-Dieter Bruckner · Darmstadt, DE
• Karl Osterried · Dieburg, DE
• Reiner Vogt · Darmstadt, DE

Key dates

• Filing date: Feb 9, 2000
• Grant date: Jan 21, 2003
• Expiry date: Feb 9, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09C2220/103
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A colored interference pigment having a platelet-shaped layer as substrate, a coating of at least one metal oxide layer and, optionally, a further layer, at least two layers comprising or consisting of colorants.