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

1975-10-21

1977-12-27

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

252299, 260515R, 260520R, 260 73, 260102, 260108, C07C 6976

Patent

active

040654893

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: 3681445 (1972-08-01), Ruyle et al.
patent: 3758442 (1973-09-01), Shima et al.
patent: 3925238 (1975-12-01), Gavrilovic
patent: 3947375 (1976-05-01), Gray

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