Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having

Details Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having

1977-12-01

1980-06-03

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260141, 260147, 260162, 2605708R, 568308, 450149, 450225, 450390, 450467, 450566, 450483, 450222, 450339, 450289, C09B 3530, C09B 4516, G03C 140, G03C 554

Patent

active

042061156

ABSTRACT:
Novel yellow ortho carboxy, ortho' hydroxy azo dyes having a silver halide developing capability and conforming to the formula: ##STR1## where X' is hydrogen, hydroxy, carboxy or any substituent that does not adversely affect the solubility of thecompound of said formula in an aqueous alkaline photographic processing composition and does not render the oxidized form of the compound of said formula mobile in such processing composition; R.sup.5 is hydrogen, hydroxyl, alkyl having from 1-6 carbon atoms or ##STR2## having from 1-6 carbon atoms); R.sup.6 is hydrogen or alkyl; each R.sup.7 is hydrogen or a protective group which can be removed to provide a dihydroxyphenyl silver halide developing substituent and --alkylene-- has from 1-6 carbon atoms.

REFERENCES:
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patent: 3255001 (1966-06-01), Blout et al.
patent: 3282913 (1966-11-01), Green
patent: 3329700 (1967-07-01), Green
patent: 3482972 (1969-12-01), Idelson
patent: 3544545 (1970-12-01), Idelson
patent: 3551406 (1970-12-01), Idelson
patent: 4013633 (1977-03-01), Haase et al.
patent: 4045423 (1977-08-01), Brouard et al.

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