Use of 4-fluoropyrimidine derivatives as component for ferroelectric liquid crystal mixtures

US5344585A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Rainer Wingen · Hattersheim, DE
• Gerhard Illian · Frankfurt am Main, DE

Key dates

• Filing date: Sep 12, 1991
• Grant date: Sep 6, 1994
• Expiry date: Sep 12, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/406
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The use of a fluoropyrimidine derivative of the general formula (I) as component in a ferroelectric liquid crystal mixture comprising 2 to 20 components, ##STR1## in which the symbols have the following meaning: R.sup.1 and R.sup.2 independently of one another are, for example, straight-chain or branched alkyl having 1 to 16 carbon atoms, PA0 a and b are, for example, both equal to 0 or 1, ##STR2## for example, phenylene or cyclohexylene, and --M.sup.1 -- is, for example, --CO--O--, --O--CO--, --CH.sub.2 --O-- or --O--CH.sub.2, leads to improved switching characteristics in electrooptical display devices.