Liquid crystal materials containing substituted bicyclo(2,2,2)oc

Details Liquid crystal materials containing substituted bicyclo(2,2,2)oc Liquid crystal materials containing substituted bicyclo(2,2,2)oc

1984-01-25

1985-10-01

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonchiral additive having no specified mesophase

25229962, 350350R, 568664, 568665, 585 20, 585 21, 585 22, G02F 113, C09K 334

Patent

active

045444978

ABSTRACT:
Liquid crystal compositions are described which comprise a mixture of compounds and which includes at least one additive compound characterized in that the composition includes one or more additive compounds of Formula I as follows: ##STR1## wherein R.sub.1 represents an alkyl group, R.sub.2 represents an alkyl or alkoxy group or hydrogen and ##STR2## represents a 1,4-disubstituted bicyclo(2,2,2)octane ring. The preparation and properties of novel compounds of Formula I are also described. These liquid crystal compositions are useful in display devices such as digital calculators and word displays.

REFERENCES:
patent: 4118335 (1978-10-01), Krause et al.
patent: 4180475 (1979-12-01), Schadt et al.
patent: 4198130 (1980-04-01), Boller et al.
patent: 4219256 (1980-08-01), Grat et al.
patent: 4419262 (1983-12-01), Petrzilka
patent: 4431853 (1984-02-01), Sato et al.
patent: 4439015 (1984-02-01), Rich et al.
patent: 4464020 (1984-08-01), Le Berre et al.
C.A. 87-38976g, 1977.
C.A. 65-5379g, 1966.
C.A. 95-24347f, 1980.
Gray, G. W., et al., Mol. Cryst. Liq. Cryst., vol. 75, pp. 95-108 (1981).

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