New high temperature liquid-crystalline substances consisting of

Details New high temperature liquid-crystalline substances consisting of New high temperature liquid-crystalline substances consisting of

1983-01-21

1984-10-16

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

2522995, 25229963, 25229966, 350350R, 350350S, 568631, 568642, 568643, 568644, 568659, 568660, 568664, 585 20, 585 23, 585 25, C09K 334, G02F 113, C07C 1328, C07C 4321, C07C 43215, C07C 43184, C07C 3521, C07C 2518, C07C 49613

Patent

active

044773692

ABSTRACT:
Liquid-crystalline compounds which exhibit a liquid crystalline phase within a broader temperature range and also have a high transparent point and yet a low viscosity, and liquid-crystalline compositions containing at least one kind of the above compounds are provided, which compounds are high temperature liquid-crystalline substances consisting of 4 or 5 six-member-rings, expressed by the general formula ##STR1## wherein R and R' each represent hydrogen atom or an alkyl group or an alkoxy group, each having 1 to 10 carbon atoms; ##STR2## and n represents 0 or 1.

REFERENCES:
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patent: 4331552 (1982-05-01), Eidenschink et al.
patent: 4405488 (1983-09-01), Sugimori et al.
patent: 4439340 (1984-03-01), Kojima et al.
Detar, D. F. et al., J. Am. Chem. Soc., vol. 89, No. 16, pp. 4051-4057 (Aug. 2, 1967).
Hawkes, G. E. et al., J. Chem. Soc. Perkin Trans. II, pp. 1709-1716 (1976).
Eidenschink, R. Mol. Cryst. Liq. Cryst., vol. 94, pp. 119-125 (1983).
Demus, D. et al., Flussige Kristalle in Tabellen, pp. 230-232 & 34-35 (1975).
Billard, J. et al., Mol. Cryst. Liq. Cryst., vol. 41 (Lett.), pp. 217-222 (1978).

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