Novel liquid crystal compounds and electro-optic devices incorpo

Compositions – Liquid crystal compositions

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Details

252408, 260463, 260465D, 260471R, 260473R, C09K 334, G02F 113, C07C12146, C07C12175, C07C 7944, C07C 7946

Patent

active

040295958

ABSTRACT:
Liquid crystal compounds of the formula ##STR1## wherein X can be an alkoxy (RO-), an acyloxy ##STR2## or an alkylcarbonato ##STR3## group wherein R is an alkyl group having up to 10 carbon atoms and Y is a nitro or cyano group, having positive dielectric anisotropy and are useful in electro-optic devices which comprise a thin liquid crystal layer between two closely spaced parallel electrodes.

REFERENCES:
patent: 3915883 (1975-10-01), Van Meter et al.
patent: 3923857 (1975-12-01), Boller et al.
patent: 3925237 (1975-12-01), Ross et al.
patent: 3925238 (1975-12-01), Gavrilovic
patent: 3947375 (1976-03-01), Gray et al.
patent: 3951846 (1976-04-01), Gavrilovic
patent: 3952046 (1976-04-01), Scherrer et al.
patent: 3954653 (1976-05-01), Yamazaki

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