Polymer laminates having increased hiding power

US6143379A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventors

• Axel Schoenfeld · Wiesbaden, DE
• Bernd Dewald · Idstein, DE

Key dates

• Filing date: Apr 16, 1998
• Grant date: Nov 7, 2000
• Expiry date: Apr 16, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2323/053
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A polymer laminate essentially consisting of at least two cholesteric, liquid-crystalline polymer layers and a light-absorbent layer in between is suitable as starting material for effect pigments having a color impression which is dependent on the viewing angle.