Liquid crystal compounds

Details Liquid crystal compounds Liquid crystal compounds

1990-07-25

1993-05-04

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 25229967, 560 59, 560 60, 560 65, 560102, 560111, C09K 1912, C09K 1920, C07C 6976

Patent

active

052079465

ABSTRACT:
A liquid crystal compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 3 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 3 to 18 carbon atoms; X represents ##STR2## (A) and (B) each represents a group selected from the group consisting of ##STR3## and * indicates an optically active center.

REFERENCES:
patent: 4917817 (1990-04-01), Nohira et al.
patent: 4918213 (1990-04-01), Nohira
patent: 4921632 (1990-05-01), Nakamura et al.
patent: 4973738 (1990-11-01), Suzuki et al.
Liquid Crystals, vol. 6, No. 2, Aug. 1989, pp. 167-174, Taylor & Francis, London, GB: Y. Suzuki et al.: New Fluorine-Containing Ferroelectric Liquid Crystal Compounds Showing Tristable Switching.
Patent Abstracts of Japan, vol. 13, No. 151 (C-584[3499], Apr. 12, 1989, p. 26 C584; and JP-A-63 307 837 (Daicel Chem. Inc. Ltd) Dec. 15, 1988.
A. D. L. Chandani et al., Tristable Switching in Surface Stablized Ferroelectric Liquid Crystals with a Large Spontaneous Polarization, Japanese Journal of Applied Physics, vol. 27, No. 5, May, 1988, pp. L729-L732.
Masahiro Johno et al., Temporal and Spatial Behavior of the Field-Induced Transition Between Antiferroelectric and Ferroelectric Phases in Chiral Smectics, Japanese Journal of Applied Physics, vol. 29, No. 1, Jan., 1990, pp. L107-L110.
Hiroshi Orihara, Experimental Studies on Phase Transitions in an Antiferroelectric Liquid Crystal Japanese Journal of Applied Physics, vol. 29, No. 2, Feb. 1990, pp. L333-L335.

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