Photographic elements containing 2,4-disulfonamidophenol scavengers for oxidized developing agents

Claim 2

In a photographic element comprising a support and at least one silver halide emulsion layer, the element containing a scavenger for oxidized developing agent which does not form a dye or release a photographically useful group upon reaction with said oxidized developing agent, the improvement wherein the scavenger is a 2,4-disulfonamidophenol or an alkali labile precursor of such a phenol.

Claim 3

A photographic element of claim 1, wherein the scavenger has the structural formula: ##STR10## wherein: G is hydroxy or an alkali labile precursor thereof; each R 1 is individually alkyl of 1 to 30 carbon atoms, or aryl of 6 to 30 carbon atoms or heterocyclyl of 5 to 30 atoms containing one or more ring hetero atoms selected from nitrogen, oxygen, sulfur and selenium; and R 2 , R 3 and R 4 are each individually hydrogen, halogen, alkyl of 1 to 30 carbon atoms, alkoxy of 1 to 30 carbon atoms, aryl of 6 to 30 carbon atoms or aryloxy of 6 to 30 carbon atoms, the scavenger being of sufficient bulk so as to be non-diffusible in the alkali permeable layers of the element.

Claim 4

A photographic element of claim 2 wherein the scavenger has the structural formula: ##STR11## wherein: each R 1 is individually alkyl of 1 to 30 carbon atoms, or aryl of 6 to 30 carbon atoms; and R 2 , R 3 and R 4 are each individually hydrogen, alkyl or 1 to 30 carbon atoms or alkoxy of 1 to 30 carbon atoms.

Claim 5

A photographic element of claim 3 wherein R 3 is alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms and R 2 and R 4 are hydrogen.

Claim 6

A photographic element of any one of claims 1, 2 or 3, wherein the scavenger is in an interlayer between two silver halide emulsion layers.

Claim 7

A photographic element of any one of claims 1, 2 or 3, wherein the scavenger is in a silver halide emulsion layer.

Claim 8

A photographic element of claim 1, wherein the silver halide emulsion layer has associated therewith an image dye providing material.

Claim 9

A photographic element of claim 7, wherein the image dye providing material is a dye-forming coupler.

Claim 10

A photographic element of claim 7, wherein the image dye providing material is a redox dye releaser.

Claim 11

In a photographic element comprising a support, at least two silver halide emulsion layers containing dye-forming couplers and a scavenger for oxidized developing agent which does not form a dye or release a photographically useful group upon reaction with said oxidized developing agent, the improvement wherein the scavenger is a 2,4-disulfonamidophenol or an alkali labile precursor of such a phenol.

Claim 12

In a photographic element comprising a support, at least two silver halide emulsion layers containing dye-forming couplers and a scavenger for oxidized developing agent which does not form a dye or release a photographically useful group upon reaction with said oxidized developing agent, the improvement wherein the scavenger is a 2,4-disulfonamidophenol or an alkali labile precursor of such a phenol.

Claim 13

A photographic element of claim 10 wherein the scavenger is in an interlayer between two silver halide emulsion layers.

Claim 14

A photographic element of claim 10 wherein the scavenger is in a silver halide emulsion layer.

Claim 15

A photographic element of any one of claims 10, 11 or 12 wherein the scavenger has the structural formula: ##STR12## wherein: G is hydroxy or an alkali labile precursor thereof; each R 1 is individually alkyl of 1 to 30 carbon atoms, or aryl of 6 to 30 carbon atoms or heterocyclyl of 5 to 30 atoms containing one or more ring hetero atoms selected from nitrogen, oxygen, sulfur and selenium; and R 2 , R 3 and R 4 are each individually hydrogen, halogen, alkyl of 1 to 30 carbon atoms, alkoxy of 1 to 30 carbon atoms, aryl of 6 to 30 carbon atoms or aryloxy of 6 to 30 carbon atoms, the scavenger being of sufficient bulk so as to be non-diffusible in the alkali permeable layers of the element.

Claim 16

A photographic element of any one of claims 10, 11 or 12 wherein the scavenger has the structural formula: ##STR13## wherein: each R 1 is individually alkyl of 1 to 30 carbon atoms, or aryl of 6 to 30 carbon atoms; and R 2 , R 3 and R 4 are each individually hydrogen, alkyl or 1 to 30 carbon atoms or alkoxy of 1 to 30 carbon atoms.

Claim 17

A photographic element of claim 14 wherein R 3 is alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms and R 2 and R 4 are hydrogen.