Compositions – Liquid crystal compositions
Patent
1973-05-16
1976-08-24
Padgett, Benjamin R.
Compositions
Liquid crystal compositions
252408, 260473R, 260473G, 260476R, 350160LC, C09K 334, G02F 113
Patent
active
039765911
ABSTRACT:
A nematic liquid crystal of high stability, which can be utilized at normal temperatures, is obtained from compounds of the formula ##SPC1##
Wherein R is an alkyl group having 1 to 14 carbon atoms, which present at least one nematic phase in the supper cooled liquid state. As a second embodiment, mixtures of the above compound with other nematic compounds formed nematic structures over wide temperature ranges.
REFERENCES:
patent: 3772210 (1973-11-01), Lodolini
patent: 3773747 (1973-11-01), Steinstrasser
patent: 3826757 (1974-07-01), Wong
patent: 3876286 (1975-04-01), Deutscher et al.
patent: 3925482 (1975-12-01), Jacques
Rondeau, R., et al., J. Amer. Chem. Soc., vol. 94, No. 4, pp. 1096-1102, (Feb. 23, 1972).
"Nematische p,p'-Disubstituierte Benzoesaurephenylester und Niedrig Schmelzende Eutektische Gemische," R. Steinstrasser, Z. Naturforsch, vol. 276, pp. 774-779, (July, 1972).
"Tolans Nematiques," J. Malthete, M. Leclercq, J. Gabard, J. Billard, and J. Jacques, C. R. Acad. Sci., (Paris), vol. 273, pp. 265-267, (1971).
Usol' Tseva et al., "Chemical Characteristics, Structure and Properties of Liquid Crystals," Russian Chem. Rev., vol. 32, No. 9, pp. 495-507, (1963).
Dubois Jean Claude
Lavenu Jean Claude
Zann Annie
"Thomson-CSF"
Gron T. S.
Padgett Benjamin R.
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