Abstract:
The invention relates to a method for coating a metal strip for use in the automotive, aircraft or aerospace industry. The strip or the strip sections produced on the basis thereof in a later step is/are first coated with at least one anticorrosive coating and then with at least one coating of a paint-like polymer-containing coating. The strip, once coated with at least one anticorrosive coating or once coated with at least one coat of a paint-like coating, is divided up in strip sections. Said coated strip sections are then formed, joined and/or coated with at least one (further) paint-like coating and/or coat of paint. The paint-like coating is achieved by coating the surface with an aqueous dispersion that contains, in addition to water, at least one UV-crosslinkable water-soluble and/or water-dispersible resin, at least one wax as the forming additive, at least one photoinitiator, and at least one corrosion inhibitor. The coating is dried and cured once it has been applied to the metal surface, thereby forming a coating that has a thickness of up to 10 nullm once cured.
Abstract:
Machines and methods for curing ultraviolet (UV) curable floor coatings are provided. In one embodiment, the machine includes a UV radiation source having one or more lamps where each lamp is operable to simultaneously emit UV radiation at two or more wavelengths and at relatively low power consumption, e.g., no more than about 75 watts per inch of cured coating width. The floor coating includes components that are reactive to these two or more wavelengths such that substantial or complete curing of the floor coating may occur upon simultaneous exposure to the two or more wavelengths. Preferably, the UV radiation emitted by each of the one or more lamps is greater at the two or more wavelengths than at wavelengths other than the two or more wavelengths.
Abstract:
Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.
Abstract:
This invention provides a high-solids coating composition which comprises (A) a compound which has at least one radically polymerizable unsaturated group per molecule, (B) a hydroxyl group-containing ester compound which is obtained by ester-forming addition reaction between 2,2-dimethylolalkanoic acid having 6 to 8 carbon atoms and alkanoic acid monoglycidylester, and which has an acid value of 20 mgKOH/g or less, (C) a curing agent which is reactive with the above-mentioned hydroxyl group-containing ester compound (B), and (D) a photopolymerization initiator, and also provides a process to form a coating film by spray coating of said coating composition, which process is characterized by irradiating flying paint particles which have been sprayed and/or paint which has been applied onto a substrate with active energy ray so as to make the coating composition partially react, and by subsequently heating the coating composition.
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 (1.4) by heating, and (4) curing the liquid layer resulting from process step (1) or the molten layer resulting from process step (2) or (3) in the molten state, during solidification and/or after solidification with radiation in the near infrared range.
Abstract:
The invention relates to a method for producing adhesive closing parts, whereby adhesive closing elements are formed from a plastic material. In order to produce at least one adhesive closing element (3) without a form tool in at least one partial area, the plastic material is deposited in the form of drops which are successively delivered by means of at least one application device (9), and the locations of the deposition of the drops are selected in a three-dimensional manner in view of the form of the respective adhesive closing elements (3) to be produced.
Abstract:
The present invention discloses an ultraviolet light curable ferromagnetic composition and method for making such a composition that may be used to produce a ferromagnetic coating on a suitable substrate. These coatings may be used to produce printed capacitors and inductors. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.
Abstract:
The invention is a decorating medium, system and method for producing relief art on substrate surfaces. The decorating medium is an acrylic emulsion based medium containing an expandable polymer which expands the medium upon heating. The acrylic emulsion is produced with a mixture of an acrylic binder and an acrylic thickener or a cellulosic thickener combined in the appropriate range to obtain a medium rheology suitable for controlled application of the medium to the substrate surfaces. The decorating medium is applied to a substrate surface in a desired pattern either directly from a storage bottle or tube equipped with a nozzle or with an applicator such as a brush, a sponge, a knife or spatula. The desired pattern is achieved by free hand or by using a stencil or mask. After the decorating medium is applied to the surface of the substrate in the desired pattern, the medium is cured and heated. The heat causes the medium to expand and creates the relief art on the surface of the substrate. The relief art is flexible after curing and may be painted or decorated according the needs and taste of the artist. In an alternative embodiment of the invention, the decorating medium is mixed with decorating additives of choice such as pigments, colorants or glitters, prior to curing and heating the medium. The medium, the system and the method of the current invention are particularly useful for creating relief art on cloth or fabric substrates, but are also suitable for creating relief art on other substrate surfaces including metal, plastic, paper, cardboard and glass surfaces.
Abstract:
The invention is directed to a process for coating substrates by applying at least one coating composition to an optionally precoated substrate and then curing the coating layer(s) thus obtained, wherein at least one of the coating layers is produced from a coating composition which contains a binder system having olefinic double bonds capable of free-radical polymerization and having reactive functional groups within the meaning of addition and/or condensation reactions, the resin solids of the coating composition having a CnullC-equivalent weight from 300 to 10,000, preferably from 300 to 8,000, and curing of this (these) coating layer(s) is carried out by irradiation with NIR radiation in the wave length range 760-1500 nm.
Abstract:
The invention relates to a process for repairing coated substrate surfaces comprising the following successive steps: a) optionally preparing a blemished area to be repaired, b) providing a backing film coated on one side with an uncured or at least partially cured coating layer of a coating composition curable by means of high energy radiation, c) applying the backing film with its coated side onto the blemished area to be repaired, d) irradiating the coating applied in this manner onto the blemished area to be repaired with high energy radiation and e) removing the backing film, wherein the coating is irradiated through the backing film and/or after removing the backing film.