Liquid-crystalline medium having high birefringence and light stability

US6858267B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Atsutaka Manabe · Bensheim, DE
• Peer Kirsch · Darmstadt, DE
• Gerald Unger · Weiterstadt, DE

Key dates

• Filing date: Apr 16, 2003
• Grant date: Feb 22, 2005
• Expiry date: Apr 16, 2023

Classification

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

Abstract

The invention relates to a liquid-crystalline medium comprising one or more compounds of the general formula (I) in which R is an alkyl radical, alkoxy radical or alkenyl radical having from 1 to 7 or 2 to 7 carbon atoms respectively, in which one or more CH2 groups may be replaced by —O— in such a way that oxygen atoms are not adjacent, and in addition further liquid-crystalline compounds.