Cholesteric liquid-crystal polymers with increased weather stability

US6153722A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventors

• Axel Schoenfeld · Wiesbaden, DE
• Andreas Stohr · Freinsheim, DE

Key dates

• Filing date: Apr 7, 1999
• Grant date: Nov 28, 2000
• Expiry date: Apr 7, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/54
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a cholesteric liquid-crystalline polymer which in the molecule comprises at least one stabilizer comonomer from the group consisting of UV absorbers and antioxidants.