Anthraquinone amino pleochroic dyes

Details Anthraquinone amino pleochroic dyes Anthraquinone amino pleochroic dyes

1978-05-24

1979-05-15

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260380, C07C 9724, C07C 9726, C09B 120, C09B 1514

Patent

active

041547462

ABSTRACT:
Anils of 1,4- and 1,8-diaminoanthraquinone with p-alkyl- and p-alkoxybenzaldehyde are found to be pleochroic dyes which form guest-host combinations with dielectrically positive anisotropic nematic liquid crystals. These combinations are of value in electro-optical display devices.

REFERENCES:
patent: 1930351 (1933-10-01), Bamberger et al.
patent: 4078086 (1978-03-01), Winkelmann et al.
Chemical Abstracts, vol. 5, pp. 1749.sup.3, "Action of Benzyl Chloride and Chloroacetic Acid on Aminoanthraquinone", Weitzenbock et al., Univ. Graz.
Chemical Abstracts, vol. 22, pp. 3408.sup.5 , "Anthraquinone Dichlorodiimene and Its Compounds with the Amines", A. A. Sanin, 1927.

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