Abstract: A color-photographic recording material comprising at least one red-sensitive silver halide emulsion layer associated with a cyan coupler, at least one green-sensitive silver halide emulsion layer associated with a magenta coupler, and at least one blue-sensitive silver halide emulsion layer associated with a yellow coupler, at least one layer of the material containing a hydroquinone diether compound having the following formula I and optionally at least one compound having one of the formulae II, III, IV, V, SA and SB given in the description, characterized by increased light stability of the image colorants produced during chromogenic development, ##STR1## In the formula: R.sup.1 denotes alkyl, cycloalkyl or aryl;R.sup.2 denotes H, alkyl;R.sup.3, R.sup.4 denote H, alkyl, cycloalkyl, aryl, halogen, alkoxy, aroxy, acyloxy, alkylthio, arylthio, acyl, sulphonyl, sulphamoyl, acylamino, sulphonylamino, nitro;R.sup.5 denotes H, acyl, alkyl;X denotes --O-- or --NR.sup.6 --;R.sup.

Abstract: In combination with oil formers of the alkylphenol type, 3-anilinopyrazolones show absorption maxima displaced by about 8 to 12 nm towards longer wavelengths and a blue secondary absorption further displaced towards the UV range and, hence, a reduced yellow secondary density.

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: Webs coated with several layers, of which the lowermost or uppermost layer contains an instant hardener, may be produced in a single operation by curtain coating using a V-coater when the hardening layer is guided at the negatively inclined sliding surface of the V-coater while the other layers are guided at the opposite sliding surface of the V-coater and the hardening layer is combined with the remaining layers at coating edge to form a layer packet which is applied as a free-falling curtain to the web to be coated.

Abstract: Water soluble sulphates of a heteroaromatic bis- or poly-sulphone are suitable for use as hardeners for proteinaceous binders, in particular in photographic layers.

Abstract: Water-soluble adducts of tertiary amines with heteroaromatic bis- or polyvinyl sulfone compounds are suitable for hardening layers containing proteins as binder.

Abstract: Heteroaromatic vinylsulphone compounds having at least two vinylsulphonyl groups each attached to a carbon atom of a heteroasomatic ring are suitable for hardening proteinic binder layers such as photographic layers containing gelatine as binder.

Abstract: Color photographic recording material which contain pyrazolone magenta couplers, in particular 3-acylaminopyrazolone magenta couplers, have increased stability to formaldehyde if a compound corresponding to formula (I) is used as oil former for the magenta couplers:A[-(R.sup.1).sub.1 -L-(R.sup.2).sub.m -B].sub.n (I)In the above formula,A, B each denote a hydrocarbon group optionally substituted by COOH, OH or NH.sub.2, at least one of the groups A and B being a bicyclic or tricyclic hydrocarbon group with at least 7 carbon atoms optionally substituted by COOH, OH or NH.sub.2,R.sup.1 and R.sup.2 denote an alkylene group with 1 to 6 carbon atoms,L denotes CO--O, O--CO, CO--NH or NH--CO,l and m have the value 0 or 1 andn has the value 1 or 2.

Abstract: Compounds with the structural unit ##STR1## are very valuable UV absorbents, especially in photographic recording materials.

Abstract: The color yield and color granularity of color photographic recording materials is improved by using compounds of the general formula I as the sole or as additional oil formers in coupler-containing internal layers. The effect is particularly clear in layers having the small amount of gelatine. ##STR1## wherein: R.sup.1 is an aliphatic group having at least 8 carbon atoms,R.sup.2 is hydrogen or alkyl,R.sup.3 is a heterocyclic group or --(X).sub.n --R.sup.4,R.sup.4 is aryl,X is --O--, --NH--, --NCH.sub.3 --, or --CH.dbd.CH--,m is 0, 1 or 2, andn is 0 or 1.

Abstract: At least one gelatin-containing layer of a photographic silver halide material is hardened with a reaction product of two compounds corresponding to the formulaeR(SO.sub.2 --CH.dbd.CH.sub.2).sub.n (A)in which R is an n-functional aliphatic, aromatic, cycloalkyl or heterocyclic group and n is an integer of from 3 to 6 and ##STR1## in which R.sub.1 and R.sub.2 may be the same or different and represent hydrogen or a lower alkyl group, R.sub.3 is an alkyl group, an aminoalkyl group a substituated or unsubstituated aromatic group, a substituated or unsubstituated 5- or 6-membered heterocyclic ring which may be attached to the N-atom of (B) either directly or through a carbon-containing group, or R.sub.2 and R.sub.3 together represent the atoms required to complete a heterocyclic ring system.

Abstract: Compounds containing the group ##STR1## are useful in photographic materials for preventing fading of dye images.

Abstract: Gelatin-containing layers of photographic materials are hardened by adding a compound containing from 2 to 6 sulfonyl ethyl sulfate groups in the form of its salts and activating the compound by adjusting a pH-value in the range from 6.5 to 11.

Abstract: Compounds of the formulae ##STR1## are useful as antifading agents in photographic materials.

Abstract: A photographic material containing protein as binding agent is hardened with a compound which contains at least two free vinyl sulfonyl groups in the molecule and which is a bisulfite addition product of a compound containing up to 6 vinyl sulfonyl groups.

Abstract: A color photographic recording material is provided containing at least one dye image or a color coupler for the production of a dye image and the material contains in at least one hydrophilic layer a hydroxyindane as defined hereinafter to reduce the fading of the image dye on exposure to UV or visible light.

Abstract: A photographic silver halide material with at least one halide emulsion layer and at least one substance in heterogeneous contribution emulsified in oilformer compounds and a process of preparing the said photographic silver halide materials. The substances are introduced into photographic emulsions prior to coating by way of adding a hydrophilic phase containing in emulsified form the substances which are emulsified in the hydrophilic phase in form of a solution containing at least one substantially diffusion-resistant, substantially water-insoluble, substantially non-coupling dispersible .beta.-diketo compound with at least 9 carbon atoms, .beta.-keto carboxylic acid ester, .beta.-keto carboxylic acid amide, cyanoacetyl compound or .beta.-dicarboxylic acid ester with at least 13 carbon atoms as oilformer. The photographic material shows advantageous results i.a. with respect of stability of the emulsified substances in the layers and excellent sensitometric results.