Halogenobiphenyl derivatives

US4505838A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael C. Romer · Rodgau, DE
• Joachim Krause · Dieburg, DE
• Georg Weber · Langen (Hessen), DE

Key dates

• Filing date: Mar 4, 1983
• Grant date: Mar 19, 1985
• Expiry date: Mar 4, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/2007
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Halogenobiphenyl derivatives of Formula I ##STR1## wherein R.sup.1 and R.sup.2 are each alkyl or alkoxy in each case of 1-10 C atoms, Cy is 1,4-cyclohexylene, Ph is 1,4-phenylene, Q is --O--Cy-- or --O--Ph--, m and n are each 0 or 1 and X is F, Cl or Br, can be used as components of liquid crystal dielectrics for electrooptical display elements.