Photographic element and process comprising a dye releasing...

Details Photographic element and process comprising a dye releasing... Photographic element and process comprising a dye releasing...

C - Chemistry, Metallurgy

09

B

96/105, 260/171,

C09B 23/00 (2006.01) C09B 29/00 (2006.01) G03C 7/305 (2006.01) G03C 7/32 (2006.01)

Patent

CA 1314543

-0- PHOTOGRAPHIC ELEMENT AND PROCESS COMPRISING A DYE RELEASING GROUP Abstract of the Disclosure A new photographic coupler comprises a coupling-off group bonded to the coupler at the coupling position represented by the formula: -L-NR1-DYE wherein L is a linking group; NR1 is a substituted nitrogen atom bonded to DYE that together with NR1 is a releasable dye comprising an electrically neutral chromophore. Such a coupler enables dye hue stabilization without mordanting the dye formed. Such a new coupler is useful in a photographic silver halide element and process to provide increased dye density higher contrast dye images, and lower pH sensitivity upon processing.

574419

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