Photographic products employing novel nondiffusible metal complexes of AZO dyes
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0187340A1
公开(公告)日:1986-07-16
Photographic elements, diffusion transfer assemblages and coordination complexes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible dye moiety having the formula:
wherein:
(a) D', D2 and D3 each independently represents the atoms necessary to complete an aromatic heterocyclic nucleus having at least one ring of 5 to 7 atoms;
(b) Z1 and Z2 each independently represents the atoms necessary to complete an aromatic carbocyclic or heterocyclic nucleus having at least one ring of 5 to 7 atoms or a ketomethine group;
(c) G' and G2 each independently represents a metal chelating group;
(d) Me is a polyvalent, hexacoordinate metal ion,
(e) CAR represents a ballasted carrier moiety capable of releasing the diffusible dye moiety as a function of development of the silver halide emulsion layer under alkaline conditions; and
(f) n is 1, 2 or 3.
Polymeric mordant containing nitrogen-coordinating ligand for metallizable dyes
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0187984A1
公开(公告)日:1986-07-23
Photographic elements and diffusion transfer assemblages are described which contain a novel mordant comprising a polymeric backbone having appended thereto nitrogen-coordinating ligands having the formula:
wherein D1, D2, and D3 each independently represents the atoms necessary to complete an aromatic heterocyclic nucleus having at least one ring of 5 to 7 atoms.
In a preferred embodiment, the mordant comprises recurring units having the formula:
wherein:
R1 and R2 each independently represents hydrogen or an alkyl or substituted alkyl group having from 1 to about 6 carbon atoms;
Link represents a bivalent linking group; and
LIG represents a nitrogen-coordinating ligand as described above.