Hexenediyne derivative

Details Hexenediyne derivative Hexenediyne derivative

2007-06-22

2008-05-20

Wu, Shean C (Department: 1795)

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

C252S299660, C428S001100, C570S128000, C570S129000

Reexamination Certificate

active

07374700

ABSTRACT:
Provided is a liquid crystalline compound which has a large value of refractive index anisotropy, exhibits a liquid crystal phase in a wide temperature range, and is stable under use conditions.It is a liquid crystalline compound represented by the following formula (1):wherein the symbols in the formula have the following meanings:R1, R2: each independently, an alkyl group, an alkenyl group, an alkoxy group, a halogen atom or a cyano group, wherein at least one hydrogen atom in each of the alkyl, alkenyl and alkoxy groups may be replaced with a chlorine or fluorine atom;ring A, ring B: each independently, a trans-1,4-cyclohexylene group or a 1,4-phenylene group, wherein a hydrogen atom in each of these rings may be replaced with a chlorine atom, fluorine atom or methyl group;X1, X2: each independently, a hydrogen or fluorine atom;n: 0 or 1.

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patent: 10-265531 (1998-10-01), None

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