Optically active liquid crystalline compound and a composition c

Details Optically active liquid crystalline compound and a composition c Optically active liquid crystalline compound and a composition c

1992-04-07

1993-08-24

Tucker, Philip C.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 25229967, 558411, 558416, 560 59, 560 64, 560 65, 560 73, 560111, 568631, 568642, 568643, 568644, 568645, 568647, C09K 1912, C09K 1920, C07C25500, C07C 4100

Patent

active

052386031

ABSTRACT:
A liquid crystal compound having specific features suitable to use for a display mode utilizing ferroelectric liquid crystals, particularly a large spontaneous polarization value and a liquid crystal composition using the compound are provided, which compound is an optically active liquid crystalline compound of the formula ##STR1## wherein l and m each are 0 or 1; at least one of R.sup.1 and R.sup.2 is an optically active alkoxy group of the formula ##STR2## wherein R.sup.3 is 2 or 3C alkyl and R.sup.4 is 3-18C alkyl, but R.sup.3 .noteq.R.sup.4 and the other thereof is 1-20C alkyl, alkoxy or alkanoyloxy, halogen or cyano; and A is a specified two or three rings compound.

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