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US 4,402,849 AGranted
Liquid-crystalline tetrahydroquinazolines
AssigneeMerck Patent GmbH
InventorsJoachim Krause, Ludwig Pohl
Life of this patent
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Abstract
Liquid-crystalline tetrahydroquinazolines of the formula ##STR1## wherein R.sub.1 is alkyl, alkoxy, alkanoyloxy or alkoxycarbonyloxy of up to 8 carbon atoms in each case, CN, CF.sub.3, halogen or NO.sub.2 ; and R.sub.2 is alkyl of up to 10 carbon atoms are valuable components for liquid crystalline dielectrics.
Claims7
A tetrahydroquinazoline of the formula ##STR7## wherein R.sub.1 is alkyl, alkoxy, alkanoyloxy or alkoxycarbonyloxy of up to 8 carbon atoms in each case, CN, CF.sub.3, F, Cl, Br or NO.sub.2 ;
- and R.sub.2 is alkyl of up to 10 carbon atoms.
Dependencies are inferred from the claim text.