Abstract: Reduced silver halide coverage combined with minimal color granularity and high inter-image effects are obtained with a color photographic negative recording material which, for at least one of the spectral regions blue, green, red, contains a laminate of several component layers containing silver halide and color couplers and consisting of at least one middle component layer B and upper and lower component layers A, A', A", A'", . . . , the middle component layer B having a sensitivity higher by at least 3 DIN than each of the component layers A, A', A", A'", . . . , and in which the component layer B contains a DIR compound which is capable of releasing an inhibitor having a diffusibility of not less than 0.4.

Abstract: A photographic recording material comprising a support, at least one photosensitive silver halide emulsion layer, a protective layer on that side of the at least one silver halide emulsion layer remote from the support and, optionally a backing layer, the protective layer and/or the backing layer containing in combination (a) a polymeric compound (I) containing at least 0.2 mol-% recurring units corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 may be the same of different and represent hydrogen, alkyl or halogen,L is a chemical bond or a standard binding link andX is a reactive group,and (b) a finely divided crystalline SiO.sub.2 dispersion having an average particle diameter (number average) of from 0.7 to 1.2 .mu.m and containing less than 0.2% by volume particles larger than 4 .mu.m in size, are distinguished by good retouchability in combination with good mechanical properties.

Abstract: A photographic recording material comprising a support, at least one photosensitive, gelatine-containing silver halide emulsion layer on one side of the support and a gelatine-containing NC layer on the other side of the support, in which the NC layer contains a certain hydrophilic polymer, is distinguished by the fact that there is relatively little E.sub.a curl during drying whereas sufficient E.sub.i curl is present after drying, so that the material is not damaged during processing.

Abstract: Process for the preparation of stable dispersions of hydrophobic reagents in aqueous material, which process involves dissolving an ionomeric polymer, together with hydrophobic reagent substance, in a suitable organic solvent, adding water to the resulting material and then removing the organic solvent. The resulting dispersion has exceptionally high stability and finds utility in the production of diagnostic reagent test devices.

Abstract: Color images with improved Dmin/Dmax-relationship can be obtained from color photographic recording materials comprising color providing compounds in association to silver halide emulsion layers and comprising an additional binder in said silver halide emulsion layers or in adjacent non-lightsensitive layers a polymer having recurring structural units of a polymerized monomer which contains at least one urethane and/or urea group.

Abstract: A photographic recording material contains a stabilizer in polymeric form corresponding to the following formula I ##STR1## wherein the substituents have the meanings stated in the description.

Abstract: Photographic silver halide recording material comprising a support, at least one light-sensitive silver halide emulsion layer, a protective layer and optionally other layers, at least one layer which is arranged closer to the support than the protective layer containing a compound which in the form of the free acid corresponds to the following formula ##STR1## wherein R.sub.1 denotes alkylene, arylene, aralkylene or cycloalkylene,L denotes the residue of a polyester diol having an average molecular weight of from 500 to 20,000,m denotes 0 to 1,n denotes 0 to 30, preferably 0 to 10 and m+n.gtoreq.1,is distinguished by improved properties, in particular an improved maximum density.

Abstract: Photographic recording materials of which the binder layers consist of protein-like binders which have been hardened in the usual way show reduced susceptibility to the effect of formaldehyde when--in addition to the usual hardeners--low molecular weight monofunctional compounds which are capable of reacting with free primary amino groups of the binder under casting and/or storage conditions without causing additional hardening are allowed to act on the binder.

Abstract: Polymeric magenta couplers containing polymerized units of a carboxyl-containing polymerizable pyrazoloazole coupler corresponding to formula I below give magenta images characterized increased color density Dmax. ##STR1## in this formula, R.sup.1 =H, alkyl, aralkyl or aryl; X=H or a group releasable by coupling; Z.sub.a, Z.sub.b, Z.sub.c =an optionally substituted methine group, .dbd.N-- or --NH--, either the bond Z.sub.a --Z.sub.b or the bond Z.sub.b --Z.sub.c being a double bond and the other bond being a single bond; and at least R.sup.1 or X or a substituent at a methine group Z.sub.a, Z.sub.b or Z.sub.c contains an ethylenically unsaturated polymerizable group in optionally polymerized form and at least R.sup.1 or X or a substituent at a methine group Z.sub.a, Z.sub.b or Z.sub.c contains a carboxyl group.

Abstract: Magenta images of increased color density D.sub.max can be obtained by using polymeric couplers containing polymerized units of a polymerizable pyrazoloazole coupler of formula I and polymerized units of a polymerizable monomer S which contains at least one acid group and is unsoluble in water at pH .ltoreq.6 and soluble in water at pH .gtoreq.10. ##STR1## In formula I R.sup.1 denotes H, alkyl, aralkyl or aryl,X denotes H or a group which is releasable by coupling, andZ.sub.a, and Z.sub.b and Z.sub.c denote a substituted or unsubstituted methine group,.dbd.N-- or --NH--, and either the linkage in Z.sub.a --Z.sub.b or the linkage in Z.sub.b --Z.sub.c is a double bond and the other linkage is a single bond,and at least R.sup.1 or X or a substituent on a methine group denoted by Z.sub.a, Z.sub.b or Z.sub.c contains an ethylenically unsaturated, polymerizable group.

Abstract: A color photographic recording material for the dye diffusion transfer process contains color producing compounds in the form of a dispersion of particles of an ionically modified polyaddition or polycondensation product containing from 4 to 180 milliequivalents of ionic groups per 100 g, which particles are charged or loaded with the color producing compound. When development is carried out by heat treatment, color transfers with high maximum densities and low minimum densities are obtained.

Abstract: Polymeric couplers with recurring units which contain at least one urethane and/or urea group, are suitable for the production of improved photographic recording materials.

Abstract: A color photographic recording material contains at least one silver halide emulsion layer which is divided into a partial layers of different sensitivity, at least one relatively high-sensitivity partial layer containing a synthetic polymer and gelatin in a ratio by weight of from 30:70 to 80:20.

Abstract: Polymer latices in which the dispersed particles consist of a soft core and a hard shell are suitable plasticizers for gelatine in photographic recording materials.

Abstract: An image receptor layer suitable for the production of dye diffusion images with improved light fastness contains, as mordant, a mixture of from 5 to 70%, by weight, of a polymer containing cationic groups and obtained by homo- or co-polymerization of ethylenically unsaturated monomers and from 30 to 95%, by weight, of a second polymer, which is free from cationic groups and has been obtained by homo- or statistical co-polymerization of N-vinyl imidazole or 2-methyl-2-vinyl imidazole and optionally other co-polymerizable monomers.

Abstract: Colored dye diffusion images are produced using a recording material containing, on a layer support (layer element 1), a first dye absorbent layer (layer element 2), a light-sensitive element containing silver halide emulsion layers and color-providing compounds (layer element 3) and optionally a second dye absorbent layer (layer element 4), in that order. An imagewise distribution of diffusible dyes is produced in the light-sensitive element in the course of development and transferred to the first dye absorbent layer.The light-sensitive element is then decomposed by a treatment which decomposes its layers, e.g. by means of a proteolytic enzyme, but leaves the first dye absorbent layer intact. The second dye absorbent layer optionally present, which has a lower mordanting capacity than the first dye absorbent layer and serves to prevent contamination of the developer bath with diffusible dyes, is also decomposed.

Abstract: A photographic recording material consisting of a layer support, at least one light-sensitive silver halide emulsion layer containing gelatine and optionally other gelatine-containing layers which are not light-sensitive contains in at least one of the layers a cross-linked polymer latex on the basis of a low molecular weight carboxylic acid amide. The latex may advantageously be used as a binding agent or for introducing residues of photographically active substances into a photographic layer.

Abstract: A dye preparation consists of a water-soluble acid dye and a water-insoluble basic carrier. The carrier consists of crosslinked polymer particles of average particle diameter of less than 1 .mu.m and contains at least 2 mVal/g of quaternary ammonium or phosphonium groups. The dye reacts with the carrier in an ion exchange reaction and forms a dye polymer latex which can easily isolated in solid form, stored indefinitely and redispersed in water whenever required. It forms a so-called self-dispersing dye preparation. The dye preparation is useful for making dyed layers such as in photographic recording materials.

Abstract: Metal cation loaded cross-linked anionic polymer as described herein is useful in the preparation of an indicator sheet for complex forming organic compounds or in the preparation of dyed or dyable layers in photographic materials, particularly in an image receiving layer when the image dyes are complex-formers.

Abstract: Dispersions of hydrophobic substances in water are prepared by dissolving the hydrophobic substance together with an ionomeric polyaddition or condensation product in an organic, water-miscible solvent or a mixture of such a solvent with water, diluting the solution with water and removing the organic solvent. The dispersions are excellently suitable for the preparation of photographic recording materials.