Cholesteric layered material having an improved color impression, and the production thereof

US6605235B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Frank Meyer · Mannheim, DE
• Frank Prechtl · Frankfurt, DE
• Norbert Schneider · Schorndorf, DE
• Peter Heilmann · Bad Dürkheim, DE
• Volker Koch · Reckersdorf, DE
• Robert Parker · Beijing, CN
• Volker Richter · Neutraubling, DE
• Peter Schuhmacher · Mannheim, DE

Key dates

• Filing date: Aug 25, 2000
• Grant date: Aug 12, 2003
• Expiry date: Nov 20, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to cholesteric layered material having an improved color impression, to pigments prepared therefrom, and to a process for the production and use thereof.