Anthraquinone dyestuffs containing sulphonic acid groups

Details Anthraquinone dyestuffs containing sulphonic acid groups Anthraquinone dyestuffs containing sulphonic acid groups

1975-09-18

1976-09-14

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 39B, 2602393T, 260243B, 2602471A, 260262, 260272, 260303, 260326D, 26032633, 2603265S, 2603403, 260372, 260376, 260377, 260380, C09B 152

Patent

active

039806774

ABSTRACT:
Dyestuffs which contain sulphonic acid groups and correspond to the formula ##SPC1##
In which R.sub.1 and R.sub.2 denote lower alkyl radicals with 1 - 3 carbon atoms, which may be substituted; A means an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical; n stands for 0, 1 or 2; and R.sub.4 denotes a sulphonic acid group when n = 0 and denotes hydrogen or a sulphonic acid when n = 1 or 2.
The dyestuffs are eminently suitable for the dyeing and printing of natural and synthetic polyamide fiber materials.

REFERENCES:
patent: 812684 (1906-02-01), Schmidt
patent: 2337566 (1943-12-01), McNally et al.
patent: 3691209 (1972-09-01), Greenhalgh
patent: 3862967 (1975-01-01), Hohmann et al.

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