Sulphonic acid-, hydroxy-substituted phenyl azo-naphthyl azo-N-a

Details Sulphonic acid-, hydroxy-substituted phenyl azo-naphthyl azo-N-a Sulphonic acid-, hydroxy-substituted phenyl azo-naphthyl azo-N-a

1975-12-05

1977-08-02

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260191, C09B 3104

Patent

active

040395286

ABSTRACT:
A disazo dyestuff has the formula ##STR1## wherein the sulphonic acid group in ring A is in meta or para position relative to the hydroxy group and E represents ##STR2## The dyestuff gives navy blue to violet shades on synthetic polyamide textile materials.

REFERENCES:
patent: 2391179 (1945-12-01), McNally et al.
patent: 3096140 (1963-07-01), Gaetani
patent: 3580901 (1971-05-01), Feeman
patent: 3676050 (1972-07-01), James
patent: 3814749 (1974-06-01), Feeman
Colour Index, 2nd Ed., vol. 3, 1956, p. 3210.
Colour Index, 2nd Ed., vol. 3, 1956, p. 3143.
Lubs, "The Chemistry of Synthetic Dyes & Pigments," Reinhold Publishing Corp., New York, 1955, pp. 670-671.

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