Liquid crystalline cyclohexylphenyl derivatives

Details Liquid crystalline cyclohexylphenyl derivatives Liquid crystalline cyclohexylphenyl derivatives

1981-10-29

1983-08-23

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 350350R, 568 52, 568 56, 568 58, 568631, 568644, 568645, 568647, 570129, 570184, 585 20, 585 23, 585 25, 260 46SC, 260 46SF, 260 46SG, G02F 113, C09K 334, C07C 1328, C07C 2506, C07C 4321, C07C 43225, C07C12148, C07C12164, C07C12175

Patent

active

044002939

ABSTRACT:
Cyclohexylphenyl derivatives of the formula ##STR1## wherein X is --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --O--, --CH.sub.2 --S--, --O--CH.sub.2 -- or --S--CH.sub.2 --; R.sub.1 is alkyl of up to 8 carbon atoms; R.sub.2 is alkyl or alkoxy each of up to 8 carbon atoms, fluorine, chlorine, bromine or cyano; and R.sub.3 and R.sub.4 are both hydrogen or one is hydrogen and the other is fluorine, chlorine, bromine or cyano, with the proviso that R.sub.3 and R.sub.4 are both hydrogen when X is --CH.sub.2 --CH.sub.2 -- or R.sub.2 is fluorine, chlorine, bromine or cyano, are valuable liquid crystalline compounds.

REFERENCES:
patent: 4035056 (1977-07-01), Coates et al.
patent: 4154697 (1979-05-01), Eidenschink et al.
patent: 4229315 (1980-10-01), Krause et al.
patent: 4237026 (1980-12-01), Eidenschink et al.
patent: 4261651 (1981-04-01), Gray et al.
patent: 4330426 (1982-05-01), Eidenschink et al.
patent: 4340498 (1982-07-01), Sugimori
patent: 4357078 (1982-11-01), Carr et al.
patent: 4361494 (1982-11-01), Osman et al.
Osman, M. A., Mol. Cryst. Liq. Cryst., vol. 72 (Letters), pp. 291-295 (1982).
Gray, G. W., Mol. Cryst. Liq. Cryst., vol. 63, pp. 3-18 (1981).
Gray, G. W., Mol. Cryst. Liq. Cryst., vol. 53, pp. 147-166 (1979).
Osman, M. A., Mol. Cryst. Liq. Cryst., vol. 82 (Letters), pp. 47-52 (1982).
Praefcke, K. et al., Chemiker-Zeitung, vol. 104, No. 9, pp. 269-271 (1980).

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