Liquid crystal benzene derivatives

Details Liquid crystal benzene derivatives Liquid crystal benzene derivatives

1982-03-16

1983-12-27

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 2522996, 568631, 585 20, 585 23, 585 25, 350350R, G02F 113, C09K 334, C07C 4321, C07C 1328

Patent

active

044229518

ABSTRACT:
Benzene derivatives useful as a component of liquid crystal compositions are provided which are expressed by the general formula ##STR1## wherein R represents a hydrogen atom or an alkyl group of 1 to 10 carbon atoms; R' represents a hydrogen atom, an alkyl group of 1 to 10 carbon atoms or an alkoxy group of 1 to 10 carbon atoms; and ##STR2## represents ##STR3## The derivatives exhibit small values of positive dielectric anisotropy; have broader liquid crystal temperature ranges; and in particular, have higher liquid crystalline-transparent points and yet have lower viscosities.

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Billard, J. et al., Mol. Cryst. Liq. Cryst., vol. 41 (Letters), pp. 217-222 (1978).
Karamysheva, L. A. et al., Advances in Liq. Cryst. Res. and Appl., Bata, L., Percamon Press, Oxford, pp. 997-1002 (1980).
C.A., vol. 70, 46905x (1969).
C.A., vol. 68, 9160p (1968).

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