Benzene derivatives, and a liquid crystal medium

US5389295A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Andreas Wachtler · Griesheim, DE
• Reinhard Hittich · Seeheim-Jugenheim, DE
• Eike Poetsch · Mühltal, DE
• Herbert Plach · Darmstadt, DE
• David Coates · Bishop's Stortford, GB
• Ulrich Finkenzeller · Plankstadt, DE
• Thomas Geelhaar · Mainz, DE
• Volker Reiffenrath · Roßdorf, DE
• Bernhard Rieger · Langenau, DE

Key dates

• Filing date: Oct 6, 1992
• Grant date: Feb 14, 1995
• Expiry date: Oct 6, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3021
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Benzene derivatives of the formula I ##STR1## in which n is 1 to 7, Q is --CO or --(CH.sub.2).sub.r --, where r is 1 to 5, s is 0, 1 or 2, t is 0 or 1, where s+t.gtoreq.1, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y, L and Z are each, independently of one another, H or F.