Pleochroic anthraquinone dyes

Details Pleochroic anthraquinone dyes Pleochroic anthraquinone dyes

1982-08-24

1984-05-01

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing pleochroic dye

260378, 260380, 260381, 260383, 350349, C09K 334, G02F 113, C09B 158, C09B 160

Patent

active

044460473

ABSTRACT:
An anthraquinone dye from water-solubilizing and ionic substituents of the general formula: ##STR1## wherein Q is NH.sub.2, OH, alkyl, aryl, NO.sub.2 or halo;

REFERENCES:
patent: 3164436 (1965-01-01), Altermatt et al.
patent: 3337553 (1967-08-01), Altermatt
patent: 3342831 (1967-09-01), Braun
patent: 3585219 (1971-06-01), Braun
patent: 4126626 (1978-11-01), Jost
patent: 4128396 (1978-12-01), Wick et al.
patent: 4136100 (1979-01-01), Epple
patent: 4176113 (1979-11-01), Wick et al.
patent: 4232949 (1980-11-01), Huffman
patent: 4232950 (1980-11-01), Benham
patent: 4391489 (1980-07-01), Harrison et al.
patent: 4394070 (1983-07-01), Brown et al.
patent: 4405211 (1983-09-01), Harrison et al.
Reid, E. E., et al., JACS, vol. 43, pp. 2104-2119, (1921).
Hoffman, W. J., et al., JACS, vol. 45, pp. 1831-1838, (1923).

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