Abstract: Method and apparatus for potting components in an impregnating composition which does not set at room temperature, but which sets at elevated temperatures in a short time. A one-component composition is used. The potting chamber optionally consists of a forechamber, a main chamber and an exit chamber. The potting chamber is followed by a tunnel oven which itself consists of an airlock entry chamber, a main chamber and an airlock exit chamber.

Abstract: A process for incorporating photographic additives which are sparingly soluble to insoluble in water into a free-flowing, aqueous preparation which contains a hydrophilic colloid and is used to prepare photographic layers, by mixing the photographic additives with a combination of at least one non-ionic alkylphenol/alkylene oxide or diphenolmethane/alkylene oxide adduct and at least one anionic esterification product of these adducts and, optionally, a water-immiscible solvent and then finely dispersing this mixture in an aqueous solution of the hydrophilic colloid, which solution contains further water-soluble or dispersed water-insoluble constituents optionally.Spontaneous emulsions of the photographic additives with good fine dispersion are obtained in this way without high expenditure of mechanical energy. The emulsions are suitable for the preparation of photographic layers, which are used in photographic materials with improved characteristics.

Abstract: A photographic dye diffusion transfer process is provided which operates by imagwise release of a dye.The dye diffuses to a receiving layer and is mordanted there to give a dye image. The dyes are released from a compound of the formula D--E--F--BAL by reductive cleavage.D is a group which contains the residue of diffusible dye, BAL is a ballasting group which renders the compound containing it substantive to the layer in which it is present, D and E being joined by any type of chemical bond and E and F represent a single or double bond system which links D and BAL and which has a reduction potential above -200 mV measured against a standard hydrogen electrode at a pH of less than 3 and which bond can be reductively cleaved at a pH of less than 3 by a reducing agent which is able to act at a pH below 3.

Abstract: New Dyes of the formula ##STR1## are described wherein R represents alkyl, alkenyl or preferably hydrogen,X represents a modified carboxyl group, the radical --SO.sub.2 --T or a heterocyclic radical wherein T represents alkyl, alkenyl or preferably aryl,An represents an anion,Y represents a basic radical bound by way of a modified carboxyl group,Z represents a nonionic substituent,n represents 0, 1 or 2,m represents 0 or 1,A represents a heterocyclic radical or --CN,andB and C can carry further nonionic substituents, which dyes yield briliant, bright orange to red dyeings which for the most part fluoresce in ultraviolet light and have excellent fastness properties in service.

Abstract: A naphtholactam dyestuff of the general formula (1) ##STR1## in which R represents C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkenyl, C.sub.6 -C.sub.9 -cycloalkyl, C.sub.6 -C.sub.9 -aralkyl, aryl or, preferably, hydrogen, X represents --COOH, --COO.sup..crclbar. cation.sup..sym., a modified carboxyl group, the radical --SO.sub.2 --T or a heterocyclic radical, T denoting alkyl, alkenyl or, preferably, aryl, M represents hydrogen or a cation, Y represents a free or modified carboxyl group, Z is C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, Cl, Br, NO.sub.2, phenyl sulphonyl C.sub.1 -C.sub.4 -alkyl-S, C.sub.1 -C.sub.4 -alkyl sulphonyl, cyano, CONH.sub.2, CONH-C.sub.1 -C.sub.4 -alkyl, and CON(C.sub.1 -C.sub.4 -alkyl).sub.2, n represents 0, 1 or 2, A represents a heterocyclic radical or --CN and B and C can carry further non-ionic substituents.The new dyestuffs give brilliant yellow and red shades on polyester and polyamide fibers.

Abstract: A naphtholactam dyestuff of the general formula (I) ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, M represents hydrogen or a cation, X represents .dbd.O, .dbd.NH or .dbd.NR', Y represents a free or modified carboxyl group, Z represents a non-ionic substituent, n represents 0, 1 or 2, B represents a group which completes ring A to give a heterocyclic structure, R' represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl, or, preferably, hydrogen and E and F can carry further non-ionic substituents.The new dyestuffs give brilliant yellow and red shades on polyester fibres.

Abstract: Phosphor screens for converting X-rays to visible or near visible radiation are provided. These screens comprise in a fluorescent layer at least one lanthanum-, gadolinium or mixed lanthanum-gadolinium-oxy-halide phosphor, a binder for the phosphor and as stabilizer for the phosphor an epoxy compound. The oxy-halide phosphor corresponds to the formulaeLa OX:RE,Gd OX:RE orGd La OX:RE,wherein X is halide and RE is rare earth activator.

Abstract: Recording material for color photography, which contains, in at least one silver halide emulsion layer, at least one yellow coupler of the formula ##STR1## in which R.sub.1, R.sub.2, and R.sub.3 and R.sub.4 are alkyl, cycloalkyl or aryl, X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are radicals detachable during the coupling reaction and Y.sub.1 and Y.sub.2 are halogen, alkyl, alkoxy, alkylmercapto, --CN, --COOH, carbalkoxy, --NH.sub.2, --NHR.sub.5, --NR.sub.5 R.sub.6 or --NHCOR.sub.5, in which R.sub.5 and R.sub.6 are alkyl or phenyl, Z is a divalent bridge member and r is 1 or 2.Photographic colored images with excellent spectral absorption characteristics and good resistance to light, heat and moisture are obtained by exposing the recording material image-wise and developing.

Abstract: Novel dyestuffs containing amino or imino groups and their preparation are provided.These dyestuffs have the general formula ##STR1## wherein R is --N(R.sub.3)CH.sub.2 --Z or --N.dbd.CH--Z, X is N or CR.sub.6 where R.sub.6 is a hydrogen atom or an optionally substituted alkyl or aryl group, Y is S.sup..sym., O.sup..sym., N or N.sup..sym. R.sub.7 where R.sub.7 is a hydrogen atom or an optionally substituted alkyl or aryl group, R.sub.1, R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom complete a heterocyclic ring, or one of R.sub.1 and R.sub.2 can be hydrogen and the other of R.sub.1 and R.sub.2 can be aryl, Z is a group which comprises both an activating group which contains at least one double bond system and also a ballasting group and R.sub.4 and R.sub.5 each represent optional substituents or form an annelated benzene ring.

Abstract: A dyestuff of the general formula (I) ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, M represents hydrogen or a cation, Y represents a free or modified carboxyl group, Z represents a non-ionic substituent, n represents 0, 1 or 2, A represents a heterocyclic radical or an aromatic radical having negative substituents and B and C can carry further non-ionic substituents. The dyestuffs give brilliant red and yellow shades on polyester fibers.

Abstract: Provided is a method of preparing film base material consisting of biaxially oriented synthetic linear polyester which comprises stretching extruded synthetic polyester material in one direction and then coating on this material a copolymer in form of an aqueous latex of vinylidene chloride, a plasticising comonomer for the vinylidene chloride and optionally other comonomers together with 10 to 40 percent by weight of solids in the latex of at least one phosphoric acid derivative of the formula ##STR1## wherein M is hydrogen, ammonium or an alkali metal, R is methyl, ethyl or an ethylene oxide and/or propylene oxide units containing group, and R.sub.1 is hydrogen, methyl or ethyl, drying this coating and completing the orientation of the polyester film material.A photographic silver halide emulsion can be coated directly on this base without the need to apply any intermediate gelatin subbing layer.

Abstract: Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group,R.sub.2, R.sub.3, R.sub.4 each independently represent hydrogen, halogen, alkoxy, or optionally substituted alkyl or cycloalkyl,R.sub.5 and R.sub.6 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or R.sub.5 and R.sub.6, R.sub.3 and R.sub.5 and R.sub.4 and R.sub.6 form heterocyclic rings,Y is hydrogen or hydroxy, --CN, --COOR.sub.7, --CONR.sub.7 R.sub.8 or --COR.sub.7 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, andZ represents --CN, --COOR.sub.9, --CONR.sub.9 R.sub.10, --SO.sub.3 H, --SO.sub.3 .crclbar. or --COR.sub.9, where R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical.

Abstract: A composition for surface-sizing a paper is provided which contains a water soluble salt of a copolymer of(a) maleic anhydride and/or maleic acid(b) styrene(c) a vinyl alkyl ether, preferably n-butyl-vinyl ether or isobutyl vinyl etherwhich has been reacted with(d) a primary fatty amine such as palmitylamine, oleylamine or preferably stearylamine.

Abstract: A method of incorporating water insoluble additives (e.g. sensitizing dyes) in colloid layers of photographic silver halide material is provided. The additives are dissolved in a fused water soluble organic compound (e.g. sorbitol or succinimide) and the resulting mixture is either directly added to an aqueous photographic emulsion or is dissolved in the minimum of water or organic solvent and this concentrated aqueous solution is then added to the aqueous photographic emulsion and the whole is then coated as a layer which is part of a photographic material.

Abstract: The invention describes a process for the production of benzal or benzyl bromides which contain electrophilic substituents in the ortho- and/or para-position, or mixtures thereof, by the side-chain bromination of correspondingly substituted toluene, which comprises introducing elementary chlorine, under irradiation with visible light, into a two-phase system consisting of an aqueous phase and an organic phase and containing a correspondingly substituted toluene, at least one metal bromide, and a base, and also the compounds obtained by this process.

Abstract: This invention relates to the recovering of metallic silver from photographical bleach-fix baths. An electric current is passed through a bleach-fix solution containing silver ions and ferric ions, which solution has been brought to a predetermined redox potential by the addition of a reducing agent. The cathode is of the type wherein reduced silver ions can deposit thereon as metallic silver. The redox potential of the electrolyte solution is continuously monitored and a reducing agent is added automatically when the redox potential rises above a predetermined level. When the redox potential drops below a predetermined level the addition of the reducing agent is automatically stopped.

Abstract: A method for processing silver dye-bleach materials, with the process measures silver developing, dye bleaching, silver bleaching and fixing, wherein the silver and dye bleaching can be combined in a single treatment step is provided. For the silver bleaching or the combined dye and silver bleaching an acid formulation is used which has a pH value of at most 2 and contains a strong acid, a water-soluble iodide, optionally a water-soluble organic nitro compound, a non-quaternised quinoxaline or pyrazine, an anti-oxidant and at least one quaternary ammonium salt or a protonated tertiary organic nitrogen base. By this method the processing time can be shortened without impairing the quality of the colored images obtained.

Abstract: A method of preparing photograhic silver iodide, containing emulsions is provided.

Abstract: Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group, R.sub.2, R.sub.3, R.sub.4 each independently represent hydrogen, halogen, alkoxy, or optionally substituted alkyl or cycloalkyl, R.sub.5 and R.sub.6 each independently represent hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or R.sub.5 and R.sub.6, R.sub.3 and R.sub.5 and R.sub.4 and R.sub.6 form heterocyclic rings, Y is hydrogen or hydroxy, --CN, --COOR.sub.7, --CONR.sub.7 R.sub.8 or --COR.sub.7 or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical, and Z represents --CN, --COOR.sub.9, --CONR.sub.9 R.sub.10, --SO.sub.3 H, --SO.sub.3 .crclbar. or --COR.sub.9, where R.sub.7, R.sub.8, R.sub.9 and R.sub.

Abstract: Dyestuffs of the formula (I) ##STR1## in which R represents alkyl, alkenyl, cycloalkyl, aralkyl, aryl or, preferably, hydrogen, M represents hydrogen or a cation, Y represents a free or modified carboxyl group, Z represents a non-ionic substituent and n represents 0, 1 or 2 and A, B and D can carry further non-ionic substituents are disclosed; the sulfo-free dyestuffs are suitable for dyeing semi-synthetic and synthetic fibers, especially polyamides and polyesters, and the sulfo-substituted dyestuffs are suitable for dyeing, for example, wool and synthetic polyamides.