Optically active 2-substituted-propyl ether and a liquid crystal

Details Optically active 2-substituted-propyl ether and a liquid crystal Optically active 2-substituted-propyl ether and a liquid crystal

1988-02-04

1991-07-16

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522996, 25229961, 25229963, 25229966, 350350S, 560 59, 560 62, 560 73, 560255, C09K 1912, G02F 113, C07C 6976, C07C 6702

Patent

active

050323148

ABSTRACT:
A compound capable of shortening the response time of liquid crystal display elements and a composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 represents a linear or branched chain alkyl group or alkoxy group, each of 1C-18C; Ar represents ##STR2## wherein X represents H, halogen atom, cyano group or methyl; A represents --COO-- or --CH.sub.2 O--; R.sup.2 represents a C.sub.1 -C.sub.18 alkyl, A C.sub.2 -C.sub.18 alkanoyl, a C.sub.3 -C.sub.18 alkoxycarbonyl or a C.sub.4 -C.sub.18 2-alkoxypropanoyl; C having a symbol * attached thereonto represents asymmetric carbon atom; and when R.sup.2 represents a linear chain alkyl and A represents --COO--, Ar is not ##STR3##

REFERENCES:
patent: 4576727 (1985-12-01), Walba
patent: 4725688 (1988-02-01), Taguchi et al.
patent: 4820839 (1989-04-01), Krause et al.
patent: 4834904 (1989-05-01), Krause et al.

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