Optically active liquid crystal compound having methyleneoxy gro

Details Optically active liquid crystal compound having methyleneoxy gro Optically active liquid crystal compound having methyleneoxy gro

1986-07-10

1988-03-08

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 2522995, 2522996, 25229967, 350350S, 560 55, 560 73, 560105, 560107, 560108, G02F 113, C09K 1920, C07C 6976

Patent

active

047298472

ABSTRACT:
A novel, superior, optically active liquid crystal compound exhibiting a smectic C* phase, and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein X represents --CH.sub.2 O-- or --OCH.sub.2 --; Y represents --COO-- or --OCO--; and either one of R.sup.1 or R.sup.2 represents an optically active alkyl group, alkoxy group or alkoxycarbonyl group and the other represents a non-optically-active alkyl group or alkoxy group each of 4 to 18 carbon atoms.

REFERENCES:
patent: 4257911 (1981-03-01), Gray et al.
patent: 4576732 (1986-03-01), Isogai et al.
patent: 4596667 (1986-06-01), Inukai et al.
patent: 4613209 (1986-09-01), Goodby et al.
patent: 4668427 (1987-05-01), Saito et al.
Tinh, N. H. et al., Mol. Cryst. Liq. Cryst., vol. 53, pp. 43-54 (1979).
Bezborodov, V. S. et al., Zh. Org. Khim., vol. 20 (9), pp. 1913-1915 (Russ.), 1745-1747 (Eng) (Sep. 1984).
Tinh, N. H. et al., Mol. Cryst. Liq. Cryst., vol. 92 (Letters), pp. 257-262 (1984).
Goodby, J. W. et al., Liquid Crystals and Ordered Fluids, vol. 4, Plenum Press, N.Y., pp. 1-32 (1984).
Gray, G. W. et al., Liquid Crystals & Plastic Crystals, vol. 1, John Wiley & Sons, Inc., N.Y., pp. 142, 143.

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