Color-forming sulfonamidodiphenylamine dye precursor that...

Details Color-forming sulfonamidodiphenylamine dye precursor that... Color-forming sulfonamidodiphenylamine dye precursor that...

C - Chemistry, Metallurgy

09

B

260/265.7

C09B 17/00 (2006.01) C07D 241/50 (2006.01) C07D 241/52 (2006.01) C09B 17/02 (2006.01) G03C 7/32 (2006.01)

Patent

CA 1213891

-0- COLOR-FORMINIG SULFONAMIDODIPHENYLAMINE DYE PRECURSOR THAT PRODUCES PHENAZINE DYE ABSTRACT OF THE DISCLOSURE A color-forming para-sulfonamidodiphenyl- amine dye precursor has one or two sulfonamido groups in the positions ortho to the -NH- moiety separating the two phenyl rings of the sulfonamido- diphenylamine and, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. Such color-forming sulfonamidodiphenylamine dye precursors are useful to produce a dye image by cross-oxidation in an imaging material.

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