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

Filed on

1983-12-02

Date issued

1986-06-24

Examiner

Clingman, A. Lionel

Patent Class

Compositions

SubClass

Liquid crystal compositions

Other Related Categories

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

Type

Patent

Status

active

Patent number

045966664

Description

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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