Liquid crystal compound

Details Liquid crystal compound Liquid crystal compound

1991-03-01

1992-05-05

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229964, 25229965, 25229966, 25229967, 359104, 544242, 544244, 544245, 544298, 544315, 544316, 544335, 544406, 544408, 544409, 560 8, 560 18, 560 20, 560 21, 560 22, 560 23, 560 55, 560 59, C09K 1934, C09K 1920, C09K 1922, C07D23900

Patent

active

051104962

ABSTRACT:
An optically active liquid crystal compound which is represented by the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl or aralkyl group of 4-18 carbon atoms, R.sub.3 represents a haloalkyl group, X represents O, COO, OCO, CO or a single bond, Y represents COO, OCO, CH.sub.2 O or OCH.sub.2, Z represents COO or O, (A) represents a cyclic group shown by ##STR2## (B) represents a cyclic group shown by ##STR3## and l shows that the cyclic groups are substituted by at least one halogen atom.

REFERENCES:
patent: 4867903 (1989-09-01), Nohira et al.
patent: 4918213 (1990-04-01), Nohira et al.
patent: 4921632 (1990-05-01), Nakamura et al.
Suzuki et al., New Fluorine-Containing Ferroelectric Liquid Compounds Showing Tristable Switching, 6 Liquid Crystals 167-174 (1989).
Chandani et al., Novel Phases Exhibiting Tristable Switching 28 Japanese Journal of Applied Physics L1261 (1989).
Chandani et al., Antiferroelectric Chiral Smetic Phases Responsible for the Tristable Switching in MHPOBC, 28 Japanese Journal of Applied Physics L1265 (1989).
Suzuki et al., New Fluorine-Containing Ferroelectric Liquid Crystal Compounds with Large Spontaneous Polarization and Fast Switching, Time, Twelfth In'tl Liquid Crystal Conf. Abstract No. SY02 (Freiburg, Aug. 15-19, 1988).
Suzuki et al., Fluorine Containing Ferroelectric Liquid Crystal Compounds Showing Tristable Switching Abstract P 106, Second Int'l; Conf. on Ferroelectric Liquid Crystala, (Jun. 27-30, 1989).
Inui et al., First Order Paraelectric-Antiferroelectric Phase Transition in a Chiral Smectic Liquid Phase Crystal of a Fluorine Containing Phenyl Pyrimidine Derivative, 29 Japanese Journal Applied Physics L 987-990 (Jun. 1990).

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