Color photographic recording material
AssigneeAgfa-Gevaert
InventorsGunter Helling, Gunter Renner
Life of this patent
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Abstract
A color photographic recording material having a support, at least one light-sensitive silver halide emulsion layer containing a pyrazoloazole magenta coupler, at least one other layer which is arranged closer to the source of light and at least one other layer arranged further away from the source of light than the silver halide emulsion layer containing the pyrazoloazole magenta coupler, these other layers containing gelatine and a randomly or alternatingly structured copolymer of vinyl alcohol and an unsaturated carboxylic acid or a graft polymer of vinyl acetate on polyalkylene oxide followed by saponification of the acetate groups is distinguished by improved stability to light of the magenta dye obtained after processing.
Claims6
Colour photographic recording material comprising a support, at least one light-sensitive silver halide emulsion layer containing a pyrazoloazole magenta coupler and at least one other layer arranged closer to the support and at least one other layer arranged further away from the support than the silver halide emulsion layer containing the pyrazoloazole magenta coupler, wherein these other layers contain gelatine and a graft polymer containing from 2 to 50 mol-% of alkylene oxide, from 50 to 98 mol-% of vinyl alcohol and form 0 to 20 mol-% of vinyl acetate.
Colour photographic recording material comprising a support, at least one light-sensitive silver halide emulsion layer containing a pyrazoloazole magenta coupler and at least one other layer arranged closer to the support and at least one other layer arranged further away from the support than the silver halide emulsion layer containing the pyrazoloazole magenta coupler, wherein these other layers contain gelatine and a graft polymer containing from 2 to 50 mol-% of alkylene oxide, from 50 to 98 mol-% of vinyl alcohol and from 0 to 20 mol-% of vinyl acetate and further wherein the pyrazoloazole magenta coupler corresponds to the formula ##STR8## wherein R.sub.1 stands for hydrogen, halogen, alkyl, aryl, a heterocyclic group, cyano, alkoxy, acyloxy, carbamoyloxy, acylamino or a polymer residue,
- X stands for hydrogen or a group which can be split off,
- one of the groups denoted by Z.sub.1 and Z.sub.2 is a nitrogen atom and the other is CR.sub.2 and
- R.sub.2 has the same meanings as R.sub.1 and one of the groups R.sub.1 and R.sub.2 is a ballast group or substituted by a ballast group which may be a polymer residue.
Colour photographic recording material comprising a support, at least one light-sensitive silver halide emulsion layer containing a pyrazoloazole magenta coupler and at least one other layer arranged closer to the support and at least one other layer arranged further away from the support than the silver halide emulsion layer containing the pyrazoloazole magenta coupler, wherein these other layers contain gelatine and a randomly structured or alternatingly structured copolymer of vinyl alcohol and an unsaturated carboxylic acid or a graft polymer of vinyl acetate on polyalkylene oxide with subsequent saponification of the acetate groups, further wherein both said at least one other layer arranged closer to the support and said at least one other layer arranged further away from the support than the silver halide emulsion layer containing the pyrazoloazole magenta coupler are arranged so as to be immediately adjacent to and in contact with said silver halide emulsion layer containing the pyrazoloazole magenta coupler.
Dependencies are inferred from the claim text.