Clean color shade, yellow-tinged red iron oxide pigments, and a process for their manufacture, and their use

US5665157A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wolfgang Oehlert · Wheeling, US
• Wilfried Burow · Krefeld, DE
• Horst Brunn · Meerbusch, DE
• Herbert Kunstmann · Krefeld, DE

Key dates

• Filing date: Oct 15, 1996
• Grant date: Sep 9, 1997
• Expiry date: Oct 15, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K9/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to clean color shade, yellow-tinged red iron oxide pigments, and a process for their manufacture, and their use.