Aryl-mercapto anthraquinone dyestuffs, their preparation and use

Details Aryl-mercapto anthraquinone dyestuffs, their preparation and use Aryl-mercapto anthraquinone dyestuffs, their preparation and use

1983-12-02

1986-06-24

Clingman, A. Lionel

Compositions

Liquid crystal compositions

8677, 8678, 2522991, 25229962, 25229964, 260369, 260376, 260377, 260378, 260380, 260381, 260383, 260384, 350349, 350346, 350350R, C08K 508, C09K 334, G02B 106, D06P 120

Patent

active

045966664

ABSTRACT:
Anthraquinone dyestuffs of the formula ##STR1## in which R.sub.1 represents alkyl, aralkyl, --CO--X-alkyl, --CO-- X-aralkyl, --CO--X-aryl, --O-alkyl, --O-aralkyl, --O-- aryl, --CN, --NO.sub.2, --CF.sub.3, halogen or a heterocyclic radical and

REFERENCES:
patent: 3018154 (1962-01-01), Downey et al.
patent: 3164436 (1965-01-01), Altermatt
patent: 3337553 (1967-08-01), Altermatt
patent: 3894060 (1975-07-01), Hederich et al.
patent: 3929843 (1975-12-01), Botros
patent: 3975285 (1976-08-01), Ohnishi et al.
patent: 4008222 (1977-02-01), Machatzke
patent: 4232949 (1980-11-01), Huffman
patent: 4232950 (1980-11-01), Benham
patent: 4294581 (1981-10-01), Mensch et al.
patent: 4455253 (1984-06-01), Thompson
patent: 4496221 (1985-01-01), Harrison et al.
patent: 4506957 (1985-03-01), Harrison et al.

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