Sulphur dyestuffs

Details Sulphur dyestuffs Sulphur dyestuffs

1981-07-20

1984-04-17

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260369, C07G 1700

Patent

active

044433697

ABSTRACT:
Sulphur dyestuffs which can be obtained by sulphurizing, in a manner which is in itself known, the residual mixtures obtained on dinitrating anthraquinone or on dinitrating by-products from the preparation of 1-nitroanthraquinone and partially isolating 1,5- and 1,8- and, if appropriate, 1,6- and 1,7-dinitroanthraquinones, optionally after prior reduction and/or hydroxylation and/or introduction of nitro groups, and their use in dyeing cellulose or material containing cellulose.

REFERENCES:
patent: 597983 (1898-01-01), Isler
patent: 999045 (1911-07-01), Laska
patent: 1061714 (1913-05-01), Wolff

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