2,4-Difluorobenzene derivatives

Details 2,4-Difluorobenzene derivatives 2,4-Difluorobenzene derivatives

1983-05-12

1985-10-22

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 560 1, 560118, 570129, 570182, C09K 334, C07C 2513, C07C 6975

Patent

active

045487316

ABSTRACT:
Novel compounds having a small dielectric anisotropy value (.DELTA..epsilon.), a low viscosity and a small .gamma. value (ratio of saturation voltage to threshold voltage) indicating sharpness, and liquid crystal compositions containing the same are provided, which compounds are 2,4-difluorobenzene derivatives of trans-4-alkylcyclohexanes expressed by the general formula ##STR1## wherein n is 1 or 2, m is 0 or 1 and R represents an alkyl group of 1-10 carbon atoms.

REFERENCES:
patent: 4302352 (1981-11-01), Eidenschink et al.
patent: 4340498 (1982-07-01), Sugimori
patent: 4368135 (1983-01-01), Osman
patent: 4399298 (1983-08-01), Sugimori et al.
patent: 4400293 (1983-08-01), Romer et al.
patent: 4405488 (1983-09-01), Sugimori et al.
patent: 4415470 (1983-11-01), Eidenschink et al.
patent: 4490305 (1984-12-01), Eidenschink et al.
patent: 4502974 (1985-03-01), Sugimori et al.
Osman, M., et al, Mol. Cryst. Liq. Cryst., vol. 82, (Lett.), pp. 331-338, (1983).
Gray, G. W., et al, Mol. Cryst. Liq. Cryst., vol. 67, pp. 1-24, (1981).

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