Polyhalogenoaromatic compounds for liquid crystal compositions

US4551264A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Rudolf Eidenschink · Mainz, DE
• Michael C. Romer · Rodgau, DE
• Georg Weber · Langen (Hessen), DE

Key dates

• Filing date: Mar 14, 1983
• Grant date: Nov 5, 1985
• Expiry date: Mar 14, 2003

Classification

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

Abstract

New polyhalogenoaromatic compounds of Formula I ##STR1## wherein Y and Z are each independently alkyl, alkoxy or alkanoyl each of 1 to 12 C atoms, --COOR.sup.1, --O--CO--R.sup.1, CN, NO.sub.2, NH.sub.2 or OH; PA0 Q is one or two identical or different radicals selected from Ph, Cy, 1,4-bicyclo[2,2,2]octylene or 1,3-dioxane-2,5-diyl; PA0 X.sup.1 to X.sup.4 are each independently H, F, Cl or Br; PA0 R.sup.1 is alkyl of 1 to 4 C atoms, Ph--R.sup.2 or Cy--R.sup.2 ; PA0 R.sup.2 is alkyl or alkoxy each of 1-12 C atoms or CN; PA0 Ph is 1,4-phenylene; and Cy is 1,4-cyclohexylene, can be used as components of liquid-crystal dielectrics.