Biphenyl esters and liquid crystalline mixtures comprising them

Details Biphenyl esters and liquid crystalline mixtures comprising them Biphenyl esters and liquid crystalline mixtures comprising them

1977-10-11

1979-01-23

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 350350, C09K 334, G02F 113

Patent

active

041360532

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.

REFERENCES:
patent: 3915883 (1975-10-01), Van Meter et al.
patent: 3925238 (1975-12-01), Gavrilovic
patent: 3947375 (1976-03-01), Gray et al.
patent: 4002670 (1977-01-01), Steinstrasser
patent: 4017416 (1977-04-01), Inukai et al.
patent: 4065489 (1977-12-01), Steinstrasser et al.
patent: 4083797 (1978-04-01), Oh

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