Abstract:
A powder primer composition comprising as essential components (A) a carboxyl group-containing thermosetting polyester resin, (B1) a bisphenol A-type epoxy resin with an epoxy equivalent of 400-2000 g/eq or (B2) a bisphenol-type epoxy resin with an epoxy equivalent of 400-2000 g/eq and (C1) a bisphenol F-type epoxy resin with an epoxy equivalent of 400-2000 g/eq or (C2) a modified epoxy resin containing phenolic hydroxyl groups, obtained by reacting (a) a bifunctional epoxy resin with (b) an excess of a bifunctional phenol. Coating films obtained using the powder primer composition have excellent finished appearance and corrosion resistance.
Abstract:
A ceramic substrate metallization process for making a ceramic circuit substrate practically in an economic way by means of: washing a non-charged ceramic substrate and roughening the surface of the ceramic substrate by etching, and then coating a negatively charged (or positively charged), silicon-contained, nanoscaled surface active agent on the ceramic substrate, and then coating a positively charged (or negatively charged) first metal layer on the ceramic substrate.
Abstract:
The invention concerns a method for depositing a thin polymer film on a substrate for functionalizing the surface of said substrate, comprising a step which consists in electrohydrodynamic spraying of a polymerizable precursor towards the substrate so as to produce an electrostatic deposition of electrically charged droplets of said precursor and form the thin film on the surface by polymerizing the droplets. The method is characterized in that it further comprises a step for causing the excited species to interact with the droplets of the sprayed precursor, thereby promoting the polymerization reactions of said precursor. The invention also concerns a device for implementing the method, in particular for depositing a thin polymer film on a moving substrate-film.
Abstract:
To provide a stretched film of void-containing thermoplastic resin having an attractive force between sheets is 50 g or less. The stretched film of void-containing thermoplastic resin has no charge therein and can be processed secondarily with lesser electrostatic disturbance even in a low-humidity environment.
Abstract:
A process for overcoating multicoat paint systems comprising (1) applying by pneumatic spray application to the multicoat paint systems the extract, free from opaque pigments, of an aqueous basecoat material (A) or of a corresponding aqueous basecoat material, (2) flashing off and/or drying the resulting film (1) without curing it completely, (3) coating by pneumatic spray application at a reduced spraying pressure the resulting flashed off and/or dried film (2) with the aqueous basecoat material (A) or a ′ corresponding aqueous basecoat material, (4) flashing off and/or drying the resulting aqueous basecoat film (3) without curing it completely, (5) coating the resulting flashed off and/or dried aqueous basecoat film (4) with a liquid clearcoat material, and (6) jointly curing the film (1), and, where resulting clearcoat film (5), the aqueous basecoat film (4) and the appropriate, any further uncured films that are present.
Abstract:
The present invention discloses an aqueous coating composition, comprising: (A) a water-soluble resin and (B) a cross-linking agent. The water-soluble resin after amination is evenly dispersed in a water-soluble solvent and the water-soluble resin is selected from the group consisting of the following or combination thereof: acrylic resin, alkyd resin, epoxy resin, polyurethane resin and polyester resin. The cross-linking agent at least has the function of promoting the reaction and enhancing the interaction force between the water-solution resin and a coating substrate. The function of the cross-linking agent is to have the water-soluble resin be dried naturally or compulsorily.
Abstract:
To improve the transmission properties of antennae manufactured with known methods, more specifically antennae for application in the UHF range, a method is proposed of producing pattern-forming metal structures on a carrier substrate. The method comprises the following method steps: providing the carrier substrate, forming the pattern on the carrier substrate with a composite material containing dispersed metal, bringing the carrier substrate into contact with halide ions, and thereafter depositing a metal layer onto the pattern formed by the composite material, producing thereby metal structures.
Abstract:
The present invention provides a method and apparatus for transferring an array of oriented carbon nanotubes from a first surface to a second surface by providing the array of oriented carbon nanotubes on the first surface within a vacuum chamber, providing the second surface within the vacuum chamber separate from the first surface, and applying an electric potential between the first surface and the second surface such that the array of oriented carbon nanotubes are sublimed from the first surface and re-deposited on the second surface.
Abstract:
A metal oxide thin film structure for a solid oxide fuel cell, prepared by a method comprising dispersing a metal oxide nanopowder in a metal oxide salt solution and subsequent coating of the resulting metal oxide powder dispersed sol and the metal oxide salt solution on a porous substrate, has excellent gas impermeability, excellent phase stability, and is devoid of cracks or pinholes.
Abstract:
The invention relates to a method for producing a coating material as well as the use of the coating material.In order to provide a method for producing a novel coating material with which scratchproof coatings can be fabricated and which may also be used as coating powder, it is proposed within the scope of the invention that one or more organic molecules, oligomers or polymers comprising at least one functional group react with one or more silanes comprising at least one functional organic group on an organic side chain to form a covalent bond between the organic molecule, oligomer or polymer and the silane, thus resulting in a high-molecular-weight silane which can be cured directly by means of a catalyst.Surprisingly, it has been found that by reacting organically functionalized silanes, e.g. silanes that have an NCO— functional group (and are, at the most, slightly pre-crosslinked), with suitable reaction partners, a novel class of compounds can be produced which, in the form of coating powders, high-solids binders or 100 percent resins, may be used as coating material.