Anisotropic compounds and liquid crystal mixtures

Details Anisotropic compounds and liquid crystal mixtures Anisotropic compounds and liquid crystal mixtures

1983-01-25

1985-04-30

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229963, 25229964, 2522995, 350350R, 350350S, 260465C, 260465D, 260465F, 260465G, 260465H, C09K 334, G02F 113, C07C12164

Patent

active

045143170

ABSTRACT:
Anisotropic compounds having negative DC anisotropy and improved photochemical stability have the formula (1) given in patent claim 1; none of the benzene rings present in the molecule (1) is bonded directly to two oxygen atoms, as a result of which quinoidal bonding states which reduce the photochemical stability of anisotropic compounds in the case of benzene rings with two lateral nitrile groups are excluded.

REFERENCES:
patent: 4219256 (1980-08-01), Gray et al.
patent: 4229315 (1980-10-01), Krause et al.
patent: 4237026 (1980-12-01), Eidenschink et al.
patent: 4261652 (1981-04-01), Gray et al.
patent: 4279770 (1981-07-01), Inukai et al.
patent: 4357678 (1982-11-01), Carr et al.
patent: 4368135 (1983-01-01), Osman
patent: 4400061 (1983-08-01), Carr et al.
patent: 4400293 (1983-08-01), Romer et al.
patent: 4439015 (1984-03-01), Rich et al.
patent: 4479885 (1984-10-01), Mukoh et al.
Gray; G. W. et al., Mol. Cryst. Liq. Cryst., vol. 75, pp. 95-108, (1981), vol. 63, pp. 3-18, (1981).

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