Mesomorphic material with low optical anisotropy and process for

Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...

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25229962, 25229963, 25229964, 25229967, 350350R, C09K 334, G02F 113

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044902778

ABSTRACT:
A mesomorphic material contains at least one compound "A" ensuring a positive dielectric anisotropy of the material and a compound "B" ensuring a lowered value of optical anisotropy of the material; the content of compound A is within the range of from 4.9 to 30.0% by weight, the content of compound B is within the range of from 70 to 95.1% by weight. The material of the invention has a dielectric anisotropy of from +1 to +10 and the value of optical anisotropy--within the range of from 0.04 to 0.1.

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Blihov, L. M., "Liquid Crystals: Physical Properties and Their Possibilities in Application", Advances in Liquid Crystal Research and Applications, Bata, L., Pergamon Press, Oxford (1980), pp. 1083-1101, 1099.
Schubert, H., et al., Z. Chem., vol. 12 (6), pp. 219-220 (1972).
Demus, D., et al., Mol. Cryst. Liq. Cryst., vol. 63, pp. 129-144 (Jan. 1981).
Karamysheva, L. A., et al., Mol. Cryst. Liq. Cryst., vol. 37, pp. 29-34 (1976).
German Article entitled "Liquid Crystals in Tables", Demus, Demus and Zaschke, date unknown, p. 34.

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