Compositions – Liquid crystal compositions
Patent
1976-09-17
1977-06-14
Schafer, Richard E.
Compositions
Liquid crystal compositions
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
Gavrilovic Dragan Milan
Ross Daniel Louis
Christoffersen H.
Gron T. S.
Morris Birgit E.
RCA Corporation
Schafer Richard E.
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