Hydroterphenyls

US4620938A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

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

Key dates

• Filing date: Apr 5, 1985
• Grant date: Nov 4, 1986
• Expiry date: Apr 5, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3003
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

New hydroterphenyls of formula I EQU R.sup.1 --Cy--Cy--Ph--R.sup.2 I wherein R.sup.1 is alkyl; R.sup.2 is H, F, Cl, Br, I, OH, CN, alkyl, --O-alkyl, --COOR.sup.3 or --O--CO--R.sup.3 ; R.sup.3 is H, alkyl, --Cy-alkyl, --Ph-alkyl, --Ph--O-alkyl, --Ph--CN or --Ph--F; Cy is 1,4-cyclohexylene; and Ph is 1,4-phenylene; can be used as dielectrics for electrooptical display elements.