Cholesteric layered material having improved color stability, and the production thereof

US6850310B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Frank Prechtl · Frankfurt, DE
• Norbert Schneider · Schorndorf, DE
• Frank Meyer · Mannheim, DE
• Peter Blaschka · Ludwigshafen, DE
• Sylke Haremza · Neckargemünd, DE
• Tilmann Hezel · Mannheim, DE
• Robert Parker · Beijing, CN
• Volker Richter · Neutraubling, DE

Key dates

• Filing date: Aug 25, 2000
• Grant date: Feb 1, 2005
• Expiry date: Sep 7, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a cholesteric layered material with improved color shift stability.