Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoaz

Details Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoaz Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoaz

1973-09-14

1976-07-13

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 13, 260144, 428473, C09B 3130, D06P 332

Patent

active

039693392

ABSTRACT:
The invention is directed to pentakisazo dyestuffs of the formula: ##SPC1##
In which A.sub.1 and A.sub.2 may be the same or different and each is monosulphonaphthylene, hydroxy-monosulpho-naphthylene or hydroxy-disulphonaphthylene and B.sub.1 and B.sub.2 may be the same or different and each is dihydroxy-phenyl, diamino-phenyl, diamino-tolyl, diaminosulpho-phenyl, amino-hydroxy-phenyl, N-(sulphomethyl)-aminohydroxy-phenyl, amino-naphthyl, hydroxy-naphthyl, hydroxysulpho-naphthyl, amino-sulpho-naphthyl, amino-hydroxy-monosulpho-naphthyl, amino-hydroxy-disulpho-naphthyl, phenylmethyl-hydroxy-pyrazolyl, (dichloro-sulpho-phenyl)-methylhydroxy-pyrazolyl, (sulphophenyl)-methyl-hydroxy-pyrazolyl, 1-carbethoxy-2-oxo-propyl, N-phenyl-1-carbamoyl-2-oxy-propyl, N-(sulphophenyl)-1-carbamoyl-2-oxo-propyl, 2,4-dioxo-3-pentyl, dicarbethoxy-methyl, phenyl-carboxy-hydroxy-pyrazolyl, N-tolyl-1-carbamoyl-2-oxo-propyl, or N-(chlorophenyl)-1-carbamoyl-2-oxopropyl; such dyestuffs are useful for dyeing animal or vegetable fibers in blue to black shades.

REFERENCES:
patent: 1976044 (1934-10-01), Smith et al.
patent: 2117426 (1938-05-01), Jordan et al.
patent: 2153201 (1939-04-01), Murphy et al.
patent: 2182348 (1939-12-01), Murphy et al.
patent: 2270675 (1942-01-01), Stein et al.

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