Liquid crystal materials

Details Liquid crystal materials Liquid crystal materials

1984-12-31

1987-04-21

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

25229961, 25229963, 25229964, 25229965, 25229966, 25229967, 558414, C09K 1960, C09K 1930, C09K 1946, C07C12175

Patent

active

046594990

ABSTRACT:
A liquid crystalline material for use in optic displays has the general formula: ##STR1## wherein R.sub.1 and R.sub.2 can be the same or different and are generally an alkyl group having from 1 to 12 carbon atoms, an alkoxy group having from 1 to 12 carbon atoms, or other groups as set forth herein. Z.sub.1 and Z.sub.2 can be the same or different and generally is an alkyl group having from 1 to 4 carbon atoms, a halogen, a cyano, or hydrogen. Such a material has a wide nematic range, good viscosity and good solubility such that it can be readily utilized in commercial applications. The nematic material can also be utilized with small amounts of dichroic dyes or mixed with other liquid crystalline materials.

REFERENCES:
patent: 4279770 (1981-07-01), Inukai et al.
patent: 4330426 (1982-05-01), Eidenschink et al.
patent: 4368135 (1983-01-01), Osman et al.
patent: 4406814 (1983-09-01), Ferrato
patent: 4439015 (1984-03-01), Rich et al.
patent: 4479885 (1984-10-01), Mukoh et al.

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