Optically active liquid crystal compound and method of manufactu

Details Optically active liquid crystal compound and method of manufactu Optically active liquid crystal compound and method of manufactu

1988-11-23

1990-12-11

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 3503505, 560 51, 560 53, 560 56, 560 73, 560107, 560108, C09K 1932, C07C 6976

Patent

active

049768875

ABSTRACT:
A compound represented by formula: ##STR1## In the formula, Ar represents ##STR2## and each of Ra and Rb independently represents an optically non-active alkyl group or an optically active group having an asymmetric carbon atom. Either Ra or Rb is the optically active group. X represents ##STR3## Each of l and m represents 0 or 1.

REFERENCES:
patent: 4545921 (1985-10-01), Dubois et al.
patent: 4886620 (1989-12-01), Hopf et al.
Takatoh et al., Mol. Cryst. Liq. Cryst., vol. 164, pp. 167-178 (Nov. 1988).
Demus et al. (ed.), Flussige Kristalle in Tabellen, pp. 328-332 (1984).
Davison et al., Mol. Cryst. Liq. Cryst., vol. 129, pp. 17-35 (1985).
Gray et al., Liquid Crystals & Plastic Crystals, vol. 1, pp. 142-143 (1973).
Molecular Crystals and Liquid Crystals, vol. 129, No. 1/3, 1985, pp. 17-35, Gordon and Breach, Science Publishers Inc., London, GB; I. R. Davison et al.: "Fluorene analogues of biphenyls: Comparison of mesogenic behaviour".
Molecular Crystals & Liquid Crystals, vol. 164, Nov. 1988, pp. 167-178, Gordon and Breach Science Publishers S. A., Montreux, CH; K. Takatoh et al.: "Mesophase transition of series materials containing fluorene, fluorenone and biphenyl structures . . . ".
Mol. Cryst. Liq. Cryst, 1986, vol. 141, pp. 251-266 "Physical Properties of Some Chiral Smectic Liquid Crystals Having 1-Methyl-Alkoxy-Phenyl Group" Inukai et al.

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