Abstract: The invention provides a photothermographic material containing, on a support, an image forming layer having at least a photosensitive silver halide, a non-photosensitive organic silver salt and a reducing agent, and at least one non-photosensitive layer, in which the non-photosensitive layer contains a crosslinking agent precursor, in which the crosslinking agent precursor is a compound which releases a crosslinking agent which crosslinks a binder of the non-photosensitive layer at the time of thermal development. A photothermographic material in which water resistance and scratch resistance of an image have been improved is provided.

Abstract: A photothermographic material contains a support having thereon an image forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent and a binder, and a non-photosensitive outermost layer on a side of the support where the image forming layer is provided, The photosensitive silver halide contains silver iodide in an amount of from 40 to 100% by mole, and a binder contained in the outermost layer contains at least one of a latex polymer and a water soluble polymer that is not derived from an animal protein in an amount of 50% by mass or more.

Abstract: The present invention relates to an imaging element comprising at least one imaging layer and a support wherein the support comprises at least one layer comprising a splayant and a layered material, wherein the layered material has an aspect ratio from 20:1 and 500:1 and wherein the layered material comprises less than 10% by weight of the layer. The present invention also relates to a method of making a dimensionally stable imaging element comprising providing a support wherein said support comprises at least one layer comprising a splayant and a layered material, wherein said layered material comprises an aspect ratio of from 20:1 to 500:1 and wherein said layered material comprises less than 10% by weight of said at least one layer; and applying at least one imaging layer.

Abstract: A photothermographic material comprising a support and having thereon an image forming layer containing an organic silver salt, light-sensitive silver halide grains, binder and a reducing agent, wherein the reducing agent comprises: a reducing agent A containing at least a bisphenol derivative represented by following Formula (A-1); and a reducing agent B containing at least a bisphenol derivative not represented by the Formula (A-1), and the amount of reducing agent A is 5 to 45 weight % of the total weight of the reducing agent A and reducing agent B.

Abstract: A silver halide industrial radiographic material comprising on at least one side of a support a hydrophilic gelatinous non-spectrally sensitized radiation-sensitive emulsion layer, having grains, coated in a total amount in the range from 6 to 20 g, expressed as an equivalent amount of silver nitrate per square meter, and at least one non-radiation sensitive protective gelatinous antistress overcoat layer thereupon, wherein a ratio of gelatin to silver, expressed as silver nitrate in the said layer arrangement is at least 0.70, wherein said gelatinous layers are hardened by a gelatin cross-linking agent in an amount in order to have a dissolving time of at least 40 minutes, said time being defined as the period of time from the moment when the silver halide photographic material, dipped into 50 ml of an aqueous solution of 1.5% by weight of sodium hydroxide at 50° C.

Abstract: An information recording material which contains a fluorine-containing nonionic surfactant, 1.5×10−5 mol/m2 or more of a polyvalent metal salt, and an anionic surfactant capable of forming a sparingly soluble salt in an aqueous solution with the polyvalent metal, in the outermost layer on a support on the side of an information recording layer. The information recording material is less in static charge and improved in surface deficiencies due to coating.

Abstract: A silver salt photothermographic imaging material is disclosed, comprising a light-sensitive aliphatic acid silver salt, a light-sensitive emulsion containing light-sensitive halide grains, a reducing agent for silver ions, a binder and a cross-linking agent, wherein the cross-linking agent is an aromatic polyisocyanate compound and the photothermographic material further comprises a compound selected from compounds represented by the following formulas.

Abstract: A silver halide industrial radiographic material comprising on at least one side of a support a hydrophilic gelatinous non-spectrally sensitized radiation-sensitive emulsion layer, having grains, coated in a total amount in the range from 6 to 20 g, expressed as an equivalent amount of silver nitrate per square meter, and at least one non-radiation sensitive protective gelatinous antistress overcoat layer thereupon, wherein a ratio of gelatin to silver, expressed as silver nitrate in the said layer arrangement is at least 0.70, wherein said gelatinous layers are hardened by a gelatin cross-linking agent in an amount in order to have a dissolving time of at least 40 minutes, said time being defined as the period of time from the moment when the silver halide photographic material, dipped into 50 ml of an aqueous solution of 1.5% by weight of sodium hydroxide at 50 °C.

Abstract: An aqueous coating fluid is described comprising gelatin at a concentration of at least 1 wt % and a colloidal particle dispersed material phase at a volume fraction of at least 0.01, wherein at least 20% of the gelatin comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide. The present invention enables increasing the concentrations of a coating fluid containing gelatin and dispersed sub-micron colloidal materials, reducing the size of the sub-micron colloidal materials in such a coating fluid, and/or including higher molecular weight gelatin in such a coating fluid without detrimentally increasing the viscosity of such fluids. The invention further enables reducing the viscosity of an aqueous coating fluid containing gelatin and dispersed insoluble colloidal material, without needing to reduce the concentration of gelatin or colloidal materials, increase the size of the sub-micron colloidal materials, and/or reduce the molecular weight of the gelatin.

Abstract: A photothermographic imaging material comprising a support having thereon a photosensitive layer comprising a photosensitive silver halide, a light-insensitive organic silver salt, a binder, and a reducing agent for silver ions, wherein the reducing agent is represented by the following Formula (S):  wherein Z is a group of atoms necessary to form a non aromatic ring of 3 to 10 members; Rx is a hydrogen or an alkyl group; each Ro′ and Ro″ is independently a hydrogen, an alkyl group, an aryl group, or a heterocyclic group; Qo is a substituent; and each n and m is independently an integer of 0 to 2; and plural Qos may be the same or different.

Abstract: A photothermographic imaging material comprising a support having thereon a photosensitive layer, wherein the photosensitive layer has a silver coverage of 0.8 to 2.5 g/m2 and comprises a compound represented by Formula (A) or Formula (B): wherein each R3, R4 and R5 is independently an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, provided that R5 includes a silyl containing group, wherein Z2 represents OR22, X2, or OH; n2 is an integer of 1 to 3; each R21 and R22 is independently an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group, provided that R21 contains at least one primary amino group or at least two selected from the group consisting of primary and secondary amino groups; and X is a chlorine atom or a bromine atom.

Abstract: Disclosed is a method of producing a water-soluble chain-extended gelatin subjecting a source a source gelatin having a first isoelectric point, in aqueous solution, to a partial crosslinking reaction to form a reaction mixture comprising a partially crosslinked gelatin having a second isoelectric point, filtering the reaction mixture, adjusting a pH value of the filtered reaction mixture to a value equivalent to the second isoelectric point ±1.5, and concentrating, drying and pulverizing the pH-adjusted reaction mixture.

Abstract: An image forming material is disclosed, comprising a support having thereon an image forming layer containing a light-insensitive organic silver salt and a reducing agent and a protective layer in that order, wherein the image forming layer or the protective layer contains a binder having a structure unit represented by the following formula 1

Abstract: A silver halide emulsion which comprises silver halide grains dispersed in a hydrophilic colloid mixture comprising from 5% to 25% by weight of dextran, from 20% to 40% by weight of hydrogenated poly-saccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin. A fore-hardened photographic material comprising such an emulsion and the use of such an emulsion in a photographic material increases the sensitometry and mechanical resistance of such a photographic material.

Abstract: A photothermographic imaging material comprising a support having thereon a photosensitive layer comprising a photosensitive silver halide, a light-insensitive organic silver salt, a binder, and a reducing agent for silver ions,

Abstract: An aqueous coating fluid is described comprising gelatin at a concentration of at least 1 wt % and gelatin hardener at a level from 1-200 effective &mgr;mole hardener per gram of coating fluid, wherein at least 20% of the gelatin comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide. Relative improvements are obtained in reducing the rate of chemical gelation of a coating fluid containing gelatin and a hardener, without the need for chemically modifying functional groups of the gelatin. The invention further enables an increase in coating fluid concentration, increase in the fluid viscosity, reduction in the ratio of added anionic polymer to gelatin, and/or increase in the pH of a coating fluid containing gelatin and a hardener, without detrimentally increasing the rate of chemical gelation of the coating fluid.

Abstract: An imaging element is described comprising one or more hydrophilic colloid layers which include gelatin as a film forming binder which has been chemically crosslinked with a gelatin hardener, wherein at least 20% of the gelatin of at least one of the one or more hydrophilic colloid layers comprises a gelatin prepared from hydrolysis of ossein using sodium or potassium hydroxide, and the gelatin is chemical crosslinked with a gelatin hardener at a level from 70 to 120 effective &mgr;mole hardener per gram of gelatin. Improvements are obtained in the wet mechanical strength of an imaging element comprising gelatin as a binder, without needing to increase the amount of chemical crosslinker with respect to the gelatin. The invention further enables the use of relatively low molecular weight gelatins without compromising the wet mechanical strength of imaging elements and without needing to increase the amount of crosslinker relative to the amount of gelatin.

Abstract: A single-side coated light-sensitive silver halide photographic film material has been disclosed, having on one side of a subbed support, one or more light-sensitive silver halide emulsion layer(s) overcoated with an outermost protective layer; and, at the other side of said support, a backing layer, covered with a protective outermost layer, characterized in that at least said backing layer is provided with a layer wherein, besides a cross-linked or cross-linkable first binder an organic component free from cross-linking upon reaction with a hardener is present as a second binder having a low molecular weight.

Abstract: A silver halide emulsion which comprises silver halide grains dispersed in a hydrophilic colloid mixture comprising from 5% to 25% by weight of dextran, from 20% to 40% by weight of hydrogenated poly-saccharide having an average molecular weight equal to or lower than 10,000, and from 40% to 60% by weight of gelatin. A fore-hardened photographic material comprising such an emulsion and the use of such an emulsion in a photographic material increases the sensitometry and mechanical resistance of such a photographic material.

Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application, wherein B is a six-membered heteroaromatic ring. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.

Abstract: A color photographic silver halide material containing gelatine, comprising a support and at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer, which material contains at least one compound of the formula (I) or (II) and is hardened with a vinylsulfonyl compound in which R1, R2, R3, m and n have the meanings stated in the description and wherein two residues R2 or R3 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula I is attached to a polymer chain via one of the residues R1, R2 or R3, in which R11, R12, R13, R14, o and p have the meanings stated in the description wherein two residues R13 or R14 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula II is attached to a polymer chain via a residue R13 or R14, is distinguished by improved storage stability.

Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: In the above Structure I, the substituents are as defined in the application. Such compounds have good reactivity and can by used to block photographically useful compounds such as developing agents until thermally activated under preselected conditions. Compounds according to the present invention are especially useful in color photothermographic imaging elements.

Abstract: This invention relates to an imaging element comprising an imaging layer having associated therewith a compound of Structure I: wherein the substituents are as defined in the specification.

Abstract: Disclosed is a method of producing a water-soluble chain-extended gelatin subjecting a source a source gelatin having a first isoelectric point, in aqueous solution, to a partial crosslinking reaction to form a reaction mixture comprising a partially crosslinked gelatin having a second isoelectric point, filtering the reaction mixture, adjusting a pH value of the filtered reaction mixture to a value equivalent to the second isoelectric point ±1.5, and concentrating, drying and pulverizing the pH-adjusted reaction mixture.

Abstract: There is disclosed a silver halide photographic light-sensitive material which comprises a polyester film support, at least one subbing layer containing a self-emulsifiable isocyanate compound having an ethylene oxide recurring unit and two or more isocyanate groups on the support, and at least one silver halide emulsion layer provided on said subbing layer.

Abstract: A (photo)thermographic recording material according to the present invention comprising a thermosensitive element contains a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder (and optionally further including photosensitive silver halide), wherein the (photo)thermographic recording material is exclusive of polypyrrole/poly(styrene sulfonic acid) in an electrically-conductive layer and further contains a compound represented by formula (I) or a reaction product thereof with a polymer having active hydrogen atoms: ##STR1## where R.sup.1 and R.sup.3 independently represent hydrogen, a hydroxyalkyl group, an alkoxyalkyl group, an alkyl group, a --(C.dbd.O)R.sup.5 group or an alkenyl group; and R.sup.2 and R.sup.4 independently represent a hydroxyalkyl group, an alkoxyalkyl group, an alkyl group, a --(C.dbd.O)R.sup.5 group or an alkenyl group; or R.sup.1 and R.sup.2 together and R.sup.3 and R.sup.

Abstract: A tabular silica dispersion is disclosed, which is obtained by mixing a tabular silica, gelatin, a cyclodextrin and a compound capable of crosslinking gelatin. Silver halide photographic materials are also disclosed, in which the tabular silica dispersion is incorporated into a silver halide emulsion layer or a light-insensitive hydrophilic colloidal layer.

Abstract: This invention contemplates a multilayer, multicolor photographic element comprising a support, a plurality of dye-forming hydrophilic colloid containing silver halide emulsion layers which are spectrally sensitized to different regions of the visible spectrum including at least one blue-sensitive emulsion layer, a green-sensitive emulsion layer, and a red-sensitive emulsion layer wherein the topmost silver halide emulsion layer has a water swell percentage which is greater than any other light-sensitive emulsion layer.

Abstract: This invention comprises a composition containing a hydrophilic colloid and a water soluble polymer of boric acid, and optionally a hardening agent for the hydrophilic colloid. The hydrophilic colloid is preferably gelatin. This invention also comprises a photographic element in which at least one layer thereof contains a hydrophilic colloid and a water-soluble polymer of boric acid and a method of making the photographic element.

Abstract: The present invention is a silver halide photographic material including at least one layer which contains; a polymer comprising as constituent components thereof a repeating unit having a photographically useful group and at least one repeating unit having an imidazole group; and a compound having at least one functional group which reacts with an imidazole group and at least one other functional group capable of reacting with an imidazole group and a primary amine group, the amount of the compound being sufficient to insure adequate fixation of said polymer.

Abstract: This invention contemplates a multilayer, multicolor photographic element comprising a support, a plurality of dye-forming hydrophilic colloid containing silver halide emulsion layers which are spectrally sensitized to different regions of the visible spectrum including at least one blue-sensitive emulsion layer, a green-sensitive emulsion layer, and a red-sensitive emulsion layer. Each of the silver halide emulsion layers includes imaging silver having at least 25 weight percent ultrathin tabular grains having a thickness of less than 0.07 microns. One of the silver halide emulsion layers is a topmost silver halide emulsion layer having a water swell percentage which is greater than any other light-sensitive emulsion layer.

Abstract: Improvements in post process Dmin are provided in a photographic element that has a preferred coupler, hardener, and permanent solvent. The coupler of the element comprises between about 20 and 40 percent by weight of the coupler and oil phase components and the element further comprises chromanol stabilizer.

Abstract: An improved method for increaseing the hardening in a photographic element is described. The hardener is an imidazolium compound of formula: ##STR1## and the imidazolium is used in conjunction with a hardening accelerator defined by: ##STR2## the substituents are listed in the specification.

Abstract: A hydrophilic colloid is hardened with a vinyl-sulfone hardener in the presence of a borate compound in an amount sufficient to accelerate the rate of hardening. The borate compound is preferably a compound of Formula (I), or a salt, hydrate or precursor thereof:B(L).sub.n (I)wherein each L is independently --OH, --OR, --NH, --NR, or a substituted or unsubstituted alkyl group, substituted or unsubstituted aryl group, or substituted or unsubstituted heterocyclic group; R is a substituted or unsubstituted alkyl group or substituted or unsubstituted aryl group; and, n is 1, 2, or 3, with the proviso that at least one L is --OH. Preferred borate compounds are sodium and potassium borate, and hydrates thereof, and phenyl boronic acid.

Abstract: A method is disclosed of hardener-free processing a forehardened silver halide photographic material comprising a film support and on one or both sides thereof at least one silver halide emulsion layer characterized in that(1) each silver halide emulsion layer comprises spectrally sensitized cubic silver chloride or silver bromochloride grains having not more than 25 mole % of bromide in a total amount of coated silver expressed as the equivalent amount of silver nitrate in the range of from 2.5 to 4 g/m.sup.2 ;(2) the forehardened material has a water absorption of less than 4 grams per gram of gelatin, wherein said water absorption has been determined by making the difference by weight of the material when dry and when having been dipped in demineralized water of 25.degree. C. during 3 minutes followed by squeezing off the superficial water;(3) hardener-free processing includes development with a developing solution comprising thiocyanate ions in amounts from 10.sup.-3 up to 10.sup.-2 molar.

Abstract: Disclosed is a silver halide photographic light sensitive material comprising a support and provided thereon, a light sensitive silver halide emulsion layer and a non-light sensitive hydrophilic binder layer, wherein at least one of the light sensitive silver halide emulsion layer and the non-light sensitive hydrophilic binder layer contains tabular silica particles covered with a hardened gelatin layer.

Abstract: A silver halide photographic material for industrial radiography is disclosed comprising a film support and on one or both sides thereof at least one gelatino silver halide emulsion layer wherein each silver halide emulsion layer comprises as silver halide crystals silver chloride and/or silver chlorobromide crystals the amount of bromide therein being at most 25 mole %; has a gelatin to silver halide (expressed as silver nitrate) ratio from 2:10 to 6:10 and has an amount of silver halide corresponding to from 5 g to 15 g of silver per m.sup.2 and wherein said photographic material has been fore-hardened to such an extent that when it is immersed in demineralized water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of gelatin, characterized in that said silver chloride or silver chlorobromide emulsion crystals are chemically ripened in the presence of at least one sulphur compound and at least one gold compound, wherein gold is present in an amount from 0.01 to 1 .mu.

Abstract: There is disclosed a silver halide photographic light-sensitive material that comprises at least one backing layer on a support, wherein at least one of the backing layers contains a crosslinking agent of the general formula (1) in the range of from 3 to 1000 mg/m.sup.2, and at least one of the backing layers is a transparent magnetic recording layer containing abrasives that have Moh's hardness values of not less than 5.General formula (1) ##STR1## wherein n is an integer of n.gtoreq.0; m is an integer of 1 or 2; and R.sub.1, R.sub.2, and R.sub.3 each represent a hydrogen atom, an alkyl group, or an aryl group. In the light-sensitive material, the problem of emulsion peeling on the side of the back surface is hardly to arise, and in addition, an error in magnetic recording/reproducing caused after development processing is also hardly to cause.

Abstract: A method for hardening gelatin comprises the step of mixing gelatin with a compound represented by the following formula (I), (II) or (III): ##STR1## wherein R.sub.1 and R.sub.2 independently represent a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group or R.sub.1 and R.sub.2 combine with each other to form a nitrogen-containing heterocyclic ring; J represents an organic group; 1 represents an integer of 2 to 5; and m represents an integer of 1 to 5.

Abstract: Hydrophilic colloids, such as gelatin, which are employed in the manufacture of photographic elements are commonly treated with a hardening composition, among the most useful of which are hardening compositions containing vinyl sulfone hardening agents such as bis(vinylsulfonyl)methane. In accordance with this invention, citric acid or salts of citric acid are utilized as an effective inhibitor of homopolymerization in such hardening compositions.

Abstract: A solution for bleaching or bleach-fixing an exposed and developed silver halide color photographic light-sensitive material contains a ferric complex salt of a compound represented by the following Formula (A-I), (A-II) or (A-III), and a compound represented by the following Formula (B): ##STR1##

Abstract: According to this invention an assortment is offered of at least five silver halide industrial X-ray photographic materials, to be processed in the processing cycle of an automatic processing machine following the steps of developing, rinsing, fixing, rinsing and drying, wherein each of said film materials comprises at least one gelatino silver halide emulsion layer and at least one non-sensitive protective antistress coating on at least one side of a support, characterised in that for each of said materials belonging to the assortment the total amount of silver halide, expressed as the equivalent amount of silver nitrate, per square meter and per side is lying in the range from 7.

Abstract: An improved method of hardening a hydrophilic colloid is detailed. The hardening results in a stronger matrix and less water pickup. These and other advantages are obtained by hardening with a combination of at least one hardener chosen from Formula I either alone or in combination with at least one hardener chosen from Formula II: ##STR1## The substituents are defined.

Abstract: Methods and compositions are provided for hardening with fast-acting hardeners the colloidal carrier materials, such as gelatin, in the layers of photographic materials, such as photographic film. The methods of the invention comprise coating, with a conventional coating technique, among the layers of a photographic material a layer of a composition of the invention. The compositions of the invention are aqueous solutions which comprise a fast-acting hardener and a polymeric thickener, have concentrations of thickener less than about 50 mg/cm.sup.3 and, at 40.degree. C. and shear rates between about 1000 sec.sup.-1 and 10,000 sec.sup.-1, have viscosities from about 5 cp to about 20 cp and power law indices greater than about 0.90.

Abstract: Hydrophilic colloids, such as gelatin, which are employed in the manufacture of photographic elements are commonly treated with a hardening composition, among the most useful of which are hardening compositions containing vinyl sulfone hardening agents such as bis(vinylsulfonyl)methane. In accordance with this invention, a sulfate, such as sodium sulfate, is utilized as both an effective conductivity marker and an effective inhibitor of homopolymerization in such hardening compositions.

Abstract: A modified gelatin is disclosed wherein part of the free carboxyl groups is replaced by modifiers having more acid end-standing groups chosen from --SO.sub.3 M, --OSO.sub.3 M, --SSO.sub.3 M, --OPO(OH).sub.2, --OPO(OH)(OR.sup.2), --PO(OH).sub.2, --PO(OH)(OR.sup.2).In a preferred embodiment such a modified gelatin is incorporated in a DTR photographic material which after processing can serve as a lithographic printing plate. Thanks to the more hydrophilic character of the modified gelatin the differentiation between printing and non-printing areas is improved and toning at printing start-up is reduced.

Abstract: Silver halide emulsions with tabular grains showing increased aspect ratio are produced by adding to the precipitiation vessel a compound of the formula I: ##STR1## in which R.sub.1 means H or optionally substituted alkyl, aralkyl or cycloalkylR.sub.2 means H or optionally substituted alkyl, aryl or aralkyl or a polymer chainR.sub.3 means H, OH, alkyl, aryl, aralkyl, halogen, NHR.sub.4, O--CO--R.sub.4, O--CO--NHR.sub.4 or an optionally substituted oxazoline ringR.sub.4 means optionally substituted or alkyl, aralkyl or arylm means 2 or 3,n means 2 to 10,000,or a compound of the formula II ##STR2## in which R.sub.1, R.sub.3, n and m have the meaning stated above and may be identical or different andR.sub.5 means optionally substituted alkene, arylene, aralkene or a polyaddition, polycondensation or polymerisation chain.

Abstract: Gelatin hardeners, suitable for use in hardening gelatin-containing photographic layers, of the formula: ##STR1## wherein: X is a member selected from the group consisting of O and S or is absent,each Y independently is a member selected from the group consisting of O, S and a bond,each R.sup.1 independently represents an aliphatic group of up to 10 carbon atoms or the two R.sup.1 groups together represent the necessary atoms to complete a 5, 6 or 7-membered ring,--NR.sup.2 R.sup.3 contains not more than 12 skeletal atoms andR.sup.2 and R.sup.3 are independently members of the group consisting of hydrogen, cyclic groups and acyclic groups or R.sup.2 and R.sup.3 together represent the necessary atoms to complete a heterocyclic ring.

Abstract: An improved imidazolium hardener is described. These novel hardners are specifically advantageous for hardening, or crosslinking, a hydrophilic colloid in a photographic element. The advance in the art is realized in A hardening agent chosen from the set consisting of: ##STR1## wherein: Y.sup.1 represents an alkyl of 6-24 carbons, aryl of 6-24 carbons, aralkyl of 7 to 25 carbons, the atoms chosen from C, N, O, and S necessary to form a 5- or 6-membered ring, or --L.sup.1 CR.sup.13 CH.sub.2 ;L.sup.1 is a linking group;R.sup.1 is hydrogen, alkyl of 1 to 24 carbons, aryl of 6 to 24 carbons, aralkyl of 7 to 25 carbons or halogen;R.sup.2 and R.sup.3 independently represent alkyl of 1-24 carbons, aryl of 6-24 carbons, aralkyl of 7 to 25 carbons or R.sup.2 and R.sup.3 independently may represent, or be taken together to represent the atoms chosen from C, N, O and S necessary to form a 5- or 6-membered ring;R.sup.4 and R.sup.

Abstract: A photographic silver halide material which has at least one light-sensitive layer and contains in at least one layer a compound corresponding to formula (I) in a quantity of at least 10 mg/m.sup.2 : ##STR1## wherein k stands for 50 to 99% by weight,l stands for 0 to 49% by weight,m stands for 1 to 40% by weight,j stands for 0 to 49% by weight,M denotes a comonomer incorporated by polymerisation,M.sub.1 denotes ##STR2## M.sub.2 denotes ##STR3## R.sub.1 and R.sub.2 denote hydrogen or alkyl, R.sub.3 denotes an acidic group, andB denotes a chemical bond or a bridging member and which is hardened with a rapid or an instant hardener,is distinguished by improved wet scratch resistance and stability in storage.