G - Physics – 03 – C
Patent
G - Physics
03
C
96/146, 96/185,
G03C 8/10 (2006.01) C09B 27/00 (2006.01)
Patent
CA 1172494
Abstract of the Disclosure Photographic elements, diffusion transfer assemblages and processes are described which employ a nondiffusible, redox, dye-releasing compound com- prising a ballasted, sulfonamidophenol or sulfon- amidonaphthol compound having a dye moiety attached thereto through the sulfonamido group of the com- pound, the sulfonamido group being located in a position which is conjugated with respect to the position of the hydroxy group of the compound, and wherein a) the compound has at least one substituent thereon in a position which is conjugated with substituent being selected from the group consisting carbonamido, and b) the compound not having a hydroxy, alkoxy, aryloxy, sulfonamido, phosphonemido or carbonamido group thereon in a position which is conjugated with respect to the position of the hydroxy group of the compound, with the proviso that when the compound is a 2-sulfonamidophenol and has only one substituent thereon in a position which is conjugated with respect to the position of the sulfonamido group, then that one substituent is located in the 5-position. These dye-releasers release the dye moiety at a faster rate than similar dye-releasers of the prior art.
410805
Campbell Michael E.
Fleckenstein Lee J.
Ross Robert E.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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