Photographic products employing nondiffusible metal-...

C - Chemistry – Metallurgy – 09 – B

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96/37, 260/166.2

C09B 45/14 (2006.01) G03C 1/62 (2006.01) G03C 8/10 (2006.01)

Patent

CA 1172629

ABSTRACT OF THE DISCLOSURE Photographic elements and diffusion trans- fer assemblages are described which employ a nondif- fusible compound having a releasable azo dye moiety or precursor thereof having the following formula: Image wherein: (a) each Z and Z1 represents the atoms neces- sary to complete an aromatic carbocylic or heterocyclic nucleus having at least one ring of 5 to 7 atoms; each Z' having, in a position adjacent to the point of attach- ment to the azo linkage, either (i) a ni- trogen atom in the ring of the nucleus which acts as a chelating site, or (Ii) n carbon atom in the ring of the nucleus hav- ing directly attached thereto n nitrogen atom which acts as a chelating site; (b) G is a metal chelatlng group; (c) each CAR is a ballasted carrier moiety; (d) Me is a polyvalent, hexacoordinate metal ion; and (e) each n is 0 or 1, with the proviso that at least one n is 1.

390334

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