Liquid-crystalline mixture containing an azulenesquaric acid dye

Details Liquid-crystalline mixture containing an azulenesquaric acid dye Liquid-crystalline mixture containing an azulenesquaric acid dye

1989-09-07

1991-12-10

Maples, John S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

25229901, C09K 1100, C09K 1152

Patent

active

050715887

ABSTRACT:
A liquid-crystalline mixture contains a liquid crystal composition and an azulenesquaric acid dye of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each have defined meanings, and is used for fabricating liquid crystal displays.

REFERENCES:
Handbook of Liquid Crystals, pp. 604-626, (1980), Hans Kelker, et al., "Technical Applications".
Mol. Cryst. Liq. Cryst., vol. 55, (1979), 51, Robert J. Cox, "Liquid Crystal Guest-Host Systems", pp. 1-32.
Elektronik, vol. 14, (1982), 66, Lisa Pauls, et al., "Flussigkristallanzeigen-Moglichkeiten und Grenzen", pp. 66-71.
Mol. Cryst. Liq., vol. 156, (1987), 155, pp. 1-2 and 154-167, A. V. Ivashchenko, et al., "Dyes in Liquid Crystals".

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