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US 4,065,489 AGranted
Biphenyl esters and liquid crystalline mixtures comprising them
AssigneeMerck Patent GmbH
InventorsRolf Steinstrasser, Fernando Del Pino
Life of this patent
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Abstract
Biphenyl esters of the formula ##STR1## wherein X is --CO--O-- or --O--CO-- and R.sub.1 and R.sub.2 each are alkyl or alkoxy of 1 - 8 carbon atoms, enlarge significantly the temperature range of the nematic phase of liquid-crystalline compositions without adversely affecting other properties.
Claims14
A biphenyl ester of the formula ##STR9## wherein X is --CO--O-- or --0--CO-- and R.sub.1 and R.sub.2 each are alkyl or alkoxy of 1-8 carbon atoms.
Dependencies are inferred from the claim text.