Color photographic materials with spiro heterocyclic stabilizing agents comprising 2-imidazolidine-4',5'-dione rings
AssigneeAgfa-Gevaert
InventorsKarl Lohmer, Anita VON Konig, Siegismund Schutz, Jurgen Stoltefuss
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Abstract
A photographic silver halide material containing a new stabilizer compound which is an aromatic compound containing in ortho position two bridging members which are linked to form a spiro structure with a 2'-imidazolidine-4',5'-dione as defined hereinafter.
Claims7
In a photographic material containing at least one silver halide emulsion layer and a support and a stabilizer compound the improvement according to which the stabilizer compound is a phenyl compound in which the phenyl ring is ortho disubstituted with oxygen, sulfur or --NH-- as bridging members being linked together to form a spiro structure with 2'-imidazolidine-4',5'-dione.
In a process for the production of color photographic materials by treatment of the surface of a hydrophobic support with an electron beam or corona discharge to improve the adhesion of the support to hydrophilic colloid layers, at least one silver halide emulsion layer being applied onto the support, which layers are applied onto the support after said electron beam or corona discharge treatment, the improvement according to which at least one of said layers is provided with a phenyl compound in which the phenyl ring is ortho disubstituted with oxygen, sulfur or --NH-- as bridging members being linked together to form a spiro structure with 2'-imidazolidine-4',5'-dione.
Dependencies are inferred from the claim text.