Liquid crystal device, composition therefor, and method for prep

Details Liquid crystal device, composition therefor, and method for prep Liquid crystal device, composition therefor, and method for prep

1974-09-05

1977-04-19

Padgett, Benjamin R.

Compositions

Radioactive compositions

Nuclear reactor fuel

252299, 260566D, G02F 113, C09K 334

Patent

active

040185079

ABSTRACT:
A nematic liquid crystal composition comprises a fluorinated Schiff base of the general formula, X--Ph--HC=N--Ph--F, where X is an alkyl, acyl, acyloxy or alkoxy group having from 1 to 10 carbon atoms, and a p-alkoxy benzylidene-p-alkyl aniline, if desired with a small amount of a p-alkoxy benzylidene-p-cyanoaniline. An electro-optical device comprises a container for a layer of the liquid crystal composition described, a layer of such composition therein, and means to supply a current across all or a selected or predetermined area of such layer to cause alignment of the liquid crystals. Methods of making the fluorinated Schiff base, the liquid crystal composition and the device are provided.

REFERENCES:
patent: 3795436 (1974-03-01), Boller et al.
patent: 3796479 (1974-03-01), Helfrich et al.
patent: 3815972 (1974-06-01), Hsieh
patent: 3853785 (1974-12-01), Labes
patent: 3872140 (1975-03-01), Klanderman et al.
patent: 3880767 (1975-04-01), Chang et al.

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