Color-forming sulfonamidodiphenylamine dye precursor that produces phenazine dye
AssigneeEastman Kodak Company
InventorsRolf S. Gabrielsen, Patricia A. Graham, James E. Klijanowicz
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Abstract
A color-forming sulfonamidodiphenylamine dye precursor has sulfonamido groups in the ortho position and para position in relation to the --NH-- moiety of the sulfonamidodiphenylamine 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.
Claims7
A phenazine dye represented by the formula:
- ##STR35## wherein:
- R.sup.7 is alkyl having 1 to 20 carbon atoms, phenyl, methoxyphenyl, triisopropylphenyl, tolyl, benzyl or xylyl;
- R.sup.8 is alkoxy having 1 to 20 carbon atoms, alkyl containing 1 to 20 carbon atoms, or ##STR36## R.sup.9 is hydrogen, alkyl having 1 to 4 carbon atoms or --NHSO.sub.2 R.sup.12 ;
- R.sup.10 is hydrogen or alkyl having 1 to 20 carbon atoms;
- R.sup.11 is alkyl having 1 to 20 carbon atoms;
- and,
- R.sup.12 is alkyl having 1 to 20 carbon atoms, phenyl, methoxyphenyl, triisopropylphenyl, tolyl, benzyl or xylyl.
A phenazine dye which is 2-diethylamino-7-methanesulfonamido phenazine represented by the formula:
- ##STR38##
A phenazine dye which is 2-N-ethyl-N-(.beta.-methanesulfonamido)ethylamino-4-methyl-7-(2,4,6-triiso propyl)phenylsulfonamido phenazine represented by the formula:
- ##STR39##
A phenazine dye which is 2-n-hexyloxy-7-(2,4,6-triisopropyl)phenylsulfonamido phenazine represented by the formula:
- ##STR40##
A phenazine dye which is 2-methoxy-7-(2,4,6-triisopropyl)phenylsulfonamido phenazine represented by the formula:
- ##STR41##
A phenazine dye which is 2-trisethoxyethanol-7-(2,4,6-triisopropyl)phenylsulfonamido phenazine represented by the formula:
- ##STR42##
Dependencies are inferred from the claim text.