Benzene derivatives, and liquid-crystalline medium

US5718840A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Herbert Plach · Darmstadt, DE
• Detlef Pauluth · Ober-Ramstadt, DE
• Joachim Krause · Dieburg, DE
• Georg Weber · Langen (Hessen), DE
• Volker Reiffenrath · Roßdorf, DE
• Eike Poetsch · Mühltal, DE

Key dates

• Filing date: Aug 2, 1996
• Grant date: Feb 17, 1998
• Expiry date: Aug 2, 2016

Classification

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

Abstract

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which R, A.sup.1, A.sup.2, Z.sup.1, Z.sup.2, X, L and m are as defined in claim 1.