Colour photographic silver halide material
AssigneeAgfa-Gevaert
InventorsGunter Helling, Ralf Weimann
Life of this patent
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Abstract
A color photographic silver halide material containing in at least one red-sensitive layer a cyan coupler having formula (1) 1 and in a photosensitive or non-photosensitive layer a UV absorber having formula (II) 2 where R1 to R4, R11 to R16, Z, m, n and o have the meanings specified in the description, is characterised by good light and dark stability and low secondary densities.
Claims5
Color photographic silver halide material with a support, at least one red-sensitive, cyan-coupling silver halide emulsion layer and at least one non-photosensitive layer, characterised in that in the at least one red-sensitive layer it contains a cyan coupler having formula (I)
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- where
- R1 and R2 mutually independently denote a hydrogen atom or an unsubstituted or substituted alkyl group,
- R3 and R4 mutually independently denote an unsubstituted or substituted alkyl, aryl, amino, alkoxy or heterocyclic group and
- Z denotes a hydrogen atom or a group that can be eliminated under the conditions of chromogenic development,
- and in a photosensitive or non-photosensitive layer it contains a UV absorber having formula (II)
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- where
- R11, R12 and R13 mutually independently denote halogen, hydroxy, mercapto, aLkyl, aryl, alkoxy, aryloxy, acyloxy, alkylthio, arylthio, —NR17—R18, alkoxycarbonyl, carbamoyl or sulfamoyl;
- R14, R15 and R16 mutually independently denote a hydrogen atom or an alkyl group;
- R17 denotes H, alkyl or aryl;
- R18 denotes H, alkyl, aryl, acyl, alkoxycarbonyl, carbamoyl, sulfamoyl or sulfonyl;
- and
- m, n and o are the same or different and denote 1, 2, 3 or 4.
Dependencies are inferred from the claim text.