Carboxylate derivatives comprising an ether group and liquid cry

Details Carboxylate derivatives comprising an ether group and liquid cry Carboxylate derivatives comprising an ether group and liquid cry

1998-08-04

2000-11-21

Wu, Shean C.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

25229963, 25229964, 25229965, 25229966, 25229967, 560 65, 570129, C09K 1930, C09K 1920, C07C 6976, C07C 6975, C07C 2513

Patent

active

061499900

ABSTRACT:
A compound represented by the following general formula (I), a liquid crystal composition comprising the same, and a liquid crystal element using this liquid crystal composition. ##STR1## (wherein B.sub.1 and B.sub.2 represent independently a trans-1,4-cyclohexylene group or a 1,4-phenylene group wherein at least one hydrogen atom on the six-membered ring is optionally substituted by a halogen atom, Y represents a halogen-substituted alkyl group having 1 to 3 carbon atoms, a halogen-substituted alkoxy group having 1 to 3 carbon atoms, a cyano group, a fluorine atom or a chlorine atom, X represents a fluorine atom, a chlorine atom or a hydrogen atom, R.sub.1 represents an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, n and m represent independently 1 or 2 and p represents 0 or 1.)
The compound of the present invention exhibits a large dielectric anisotropy, low threshold voltage, and favorable temperature-dependency of threshold voltage, as well as a favorable miscibility with a known liquid crystal compound, and therefore a liquid crystal composition comprising the compound can provide low voltage-operable liquid crystal display elements.

REFERENCES:
patent: 4925590 (1990-05-01), Reiffenrath et al.
Derwent-Acc-No.: 1995-133924.

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