Liquid crystal substituted trans-4-n-alkylcyclohexanes and subst

Details Liquid crystal substituted trans-4-n-alkylcyclohexanes and subst Liquid crystal substituted trans-4-n-alkylcyclohexanes and subst

1980-09-22

1984-12-25

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 350350R, 350350S, 560 1, 560 65, 560 73, 560126, C09K 334, C07C 6975, C07C 6978, C07C 6990, C07C 6714

Patent

active

044902786

ABSTRACT:
The invention relates to liquid crystal nematic substances for electro-optical devices for the modulation of light, for the reproduction of numerals, signs and images as well as an orienting medium for spectroscopy and gas chromatography.
It was found that compounds containing two or three rings, connected by carboxyl groups are new liquid crystal nematic substances of the general formula ##STR1## where R.sup.1 =C.sub.n H.sub.2n+1, CN; R.sup.2 =C.sub.m H.sub.2m+1, CN;R.sup.3 =H, CH.sub.3, C.sub.2 H.sub.5 Cl, Br; x=0 or 1; m,n=numbers from 1 to 10 are suitable for electro-optical arrangements for the modulation of transmitted or reflected light as well as for the reproduction of numeral signals and images, and further, as an orienting medium for spectroscopy and gas chromotography.
Other liquid crystal substances or non-liquid crystalline substances, particularly dyes, may be added to the substances according to the invention.

REFERENCES:
patent: 4130502 (1978-12-01), Eidemschink et al.
patent: 4181625 (1980-01-01), Eidemschink et al.
patent: 4229315 (1980-10-01), Krause et al.
patent: 4293434 (1981-10-01), Deutscher et al.
patent: 4349452 (1982-09-01), Osman et al.
patent: 4368135 (1983-01-01), Osman
patent: 4419263 (1983-12-01), Praefcke et al.
Osman; M. A., et al., Mol. Cryst. Liq. Cryst., vol. 56, (Letters); pp. 105-109, (1979).
Deutscher; H. J., et al., Advances in Liq. Cryst. Res. and Applications, Bata, L. Percamon Press, N.Y., N.Y., pp. 1075-1079, vol. 2, (1980), Proceedings of the Third Liquid Crystal Conference of the Socialist Countries, Budapest, 27-31, Aug. 1979.

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