Liquid crystalline substances

Details Liquid crystalline substances Liquid crystalline substances

1985-03-29

1987-05-26

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

546326, 544333, 350350R, 2522995, C09K 1934, G02F 113, C07D40102, C07D21379

Patent

active

046684263

ABSTRACT:
Nematic liquid crystalline substances as additives in mixtures for electro-optical systems for the rendition of numbers, symbols and images. The additives provide new liquid crystalline substances of broad mesophase ranges which improve the chemical stability of the substance mixtures. It has been found that liquid crystalline 5-alkyl-pyridine-2-carboxylic acid esters of the general formula ##STR1## are suitable for utilization in mixtures for electro-optical displays for the rendition of numbers, symbols and images.

REFERENCES:
patent: 3915883 (1975-10-01), Van Meter et al.
patent: 4001137 (1977-01-01), Steinstrasser
Green et al., IBM Technical Disclosure Bulletin, vol. 15, No. 8, pp. 2467-2468, (Jan. 1973).
Dewar et al., Liq. Cryst. Ord. Fluids, vol. 2, pp. 733-741.
Pavluchenko et al., J. de Physique, Apr. 1979, pp. C1-4.
Karamyshea et al., MCLC, 1981, vol. 67, pp. 241-252.
Nash et al., MCLC, 1974, vol. 25, pp. 299-321.
Pavluchenko et al., MCLC, 1976, vol. 37, pp. 35-46.
Schubert, Wiss. Z. Univ. Halle, 1970, pp. 1-18.
Dewar et al., J. Amer. Chem. Soc., 97:23, Nov. 1975, pp. 6658-6666.

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