Reduction- and oxidation-stable iron oxide black pigments having high colour strength for colouring plastics and building materials, their preparation and their use

US7235127B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Herbert Kunstmann · Krefeld, DE
• Udo Krauter · Leverkusen, DE
• Carsten Rosenhahn · Kempen, DE
• Hans-Josef Moringen · Krefeld, DE

Key dates

• Filing date: Dec 13, 2005
• Grant date: Jun 26, 2007
• Expiry date: Dec 13, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/64
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to reduction- and oxidation-stable iron oxide black pigments having high color strength, the preparation thereof and the use thereof.