Abstract: The invention relates to a method of producing discrete patterns of an adhesive coating on a substrate, comprising the following steps: (a) the substrate is moved continuously or discontinuously in a conveying direction, (b) in an application zone a low-viscosity polymerizable and/or crosslinkable precursor material of an adhesive material is applied two-dimensionally to the substrate through at least one opening of substantially slotlike configuration of at least one movable applicator, a pattern being produced by movement of the applicator relative to the substrate, (c) downstream of the application zone the applied precursor material is polymerized and/or crosslinked.

Abstract: A process for the production of amorphous, crystalline, or mixed oxides of metals having mean particle diameters of 1 to 500 nm, by providing an electrolysis cell having a cathode in a cathode half-cell and an anode in an anode half cell, providing in the electrolysis cell a solution comprising ions of a metal or metals from which the oxide particles are to be formed dissolved in an organic electrolyte, and electrochemically reducing the metal ions at the cathode in the presence of an oxidizing agent while impeding or preventing passage of halogens from the anode half cell to the cathode half cell, to form the oxide or oxides.

Abstract: The present invention relates to a process for making polymerized hydrogel, in particular adhesives, which are characterized by very low amount of residual starting monomer(s), impurity(s) and/or by-products which could be formed during polymerization, such as acrylamide, acrylonitrile or acrolein.

Abstract: The invention relates to a method for producing coatings, adhesive layers or sealing systems for primed or unprimed substrates. The inventive method comprises the following steps: applying to and/or introducing into the substrate (1) coating substances, adhesive substances and/or sealing compounds that contain a component (A) which comprises in the statistical average at least one group (a) with at least one bond per molecule that can be activated by actinic radiation in the form of (1.1) a water-free and solvent-free liquid or melt, (1.2) a powder, (1.3) a dispersion or a solution in at least one organic solvent, or (1.4) in an aqueous medium, (2) drying the layer from a dispersion or solution (1.3) or (1.4) or allowing the resulting layer of the melt (1.1) to solidify or maintaining it in the molten state by heating, (3) melting the solid layer (1.2), (1.3) or (1.

Abstract: Continuous recovery of raw materials from coated films and apparatus for this purpose and film material recovered therewith. Large amounts of coated films can be fed to a continuous recycling process in which any pigments present in the coating and the substrate material are recovered. The treatment is carried out at room temperature in an alkaline medium consisting of soft soap, organic solvent and/or water, with or without the use of a catalyst. The solvent is recycled. After the first treatment stage, the film shreds can be treated in a second stage with a solvent/water mixture similarly to the first stage, and thorough final washing in a water or solvent circulation is effected in a third stage. The recovered film shreds are dried, pressed, milled and brought to the desired shape in a plastics agglomerator, and the recovered pigments are dried under reduced pressure (FIG. 1).

Abstract: Magnetic powder and substrate material are separately recovered from finely chopped wastes of magnetic recording media consisting of a polymeric substrate and a magnetic layer present thereon in which finely divided magnetic powder is dispersed in crosslinked or uncrosslinked polymeric binder by treating the finely chopped wastes of magnetic recording media in a solution consisting of the potassium salt of a polyunsaturated fatty acid, or a biodegradable cleaning agent comprising phosphates, surfactants and a complexing agent, and one or more organic solvents or water while being subjected to mechanical action, and separately removing the magnetic powder from the substrate material by washing or sedimentation or in a magnetic separator.