Liquid crystal composition and method

Compositions – Radioactive compositions – Nuclear reactor fuel

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252299, 252408, 260463, 260465D, 560 19, 560 55, C09K 334, G02F 113

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040824284

ABSTRACT:
An optically active chiral nematic compound of the general formula: ##STR1## wherein n varies from 1-5, and R.sub.1 is a radical selected from the group consisting of an n-alkyl group, an n-alkoxy group, an n-acyloxy group, an n-alkyl carbonato group, a cyano group, and a nitro group. Where R.sub.1 contains an alkyl group, it includes from 1 to 8 carbon atoms. The above compound comprises an amount of 0.2 to 2 weight percent in a mixed ester liquid crystal composition with a nematic temperature range of at least 0.degree. to 50.degree. C, said chiral and mixed ester compositions being miscible in each other. A nematic mixed ester liquid crystal composition comprising (a) a mixture of specific alkylphenyl benzoates and (b) a mixture of cyanophenyl benzoates. All of the foregoing compositions being useful as liquid crystals for electro-optical display devices and the like.

REFERENCES:
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patent: 4001137 (1977-01-01), Steinstrasser
patent: 4011173 (1977-03-01), Steinstrasser
Klanderman, B. H., et al., J. Am. Chem. Soc., vol. 97, No. 6, pp. 1585-1586 (Mar. 19, 1975).
Gray, G. W., et al. Liquid Crystals & Plastic Crystals, vol. 1, John Wiley & Sons, Inc., N. Y., pp. 104, 142-143 (1/6/74).

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