Benzene derivatives, and liquid-crystalline medium

US5422035A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Ekkehard Bartmann · Langen (Hessen), DE
• Herbert Plach · Darmstadt, DE
• Andreas Ruhl · De Pere, US

Key dates

• Filing date: May 9, 1994
• Grant date: Jun 6, 1995
• Expiry date: May 9, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2019/3422
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, comprising one or more compounds of the formula I ##STR1## in which R, A.sup.1,. A.sup.2, Z.sup.1, Z.sup.2, m, n, L.sup.1, L 2 and L.sup.3 are as defined in claim 1.