摘要:
A two-coat coating system for producing a two-coat coating, comprising (A) a composition of a transparent radiation-curable or radiation-curable and thermally curable clearcoat material, comprising at least one hydroxy-functional binder, and (B) a pigmented coating composition, the pigmented coating composition comprising at least one blocked, water-soluble or water-dispersible isocyanate.
摘要:
A two-coat coating system for producing a two-coat coating, comprising (A) a composition of a transparent radiation-curable or radiation-curable and thermally curable clearcoat material, comprising at least one hydroxy-functional binder, and (B) a pigmented coating composition, the pigmented coating composition comprising at least one blocked, water-soluble or water-dispersible isocyanate.
摘要:
The present invention relates to a composition for coating metallic surfaces, comprising a binder component; a corrosion inhibitor polymer based on an ethylenically monocarboxylic and dicarboxylic acid and, if appropriate, further ethylenical monomers, a solvent component, and, if appropriate, crosslinkable components, and also pigment/filler components. The invention further relates to processes for its preparation and also to methods of coating a metallic surface using the composition, to coated metallic surfaces thus obtained, and to the use of the composition as a primer, particularly in coil coating or in atmospheric corrosion control. After drying, the applied layer preferably has a thickness of at least 3.1 μm and is therefore thicker than a typical pretreatment layer.
摘要:
The invention relates to an aqueous coating material for metallic substrates, comprising a water-dispersible and/or water-soluble polymer P with a gradient in the concentration of covalently bonded hydrophilic groups along the main polymer chain, the polymer P having covalently bonded ligands A, which form chelates with the metal ions released during the corrosion of the substrate and/or with the substrate surface, and having crosslinking functional groups B, which with themselves, with further complementary functional groups B′ of the polymer P and/or with further functional groups B and/or B′ are able to form covalent bonds to crosslinkers V.
摘要:
The invention relates to an aqueous coating material for metallic substrates, comprising a water-dispersible and/or water-soluble polymer P with a gradient in the concentration of covalently bonded hydrophilic groups along the main polymer chain, the polymer P having covalently bonded ligands A, which form chelates with the metal ions released during the corrosion of the substrate and/or with the substrate surface, and having crosslinking functional groups B, which with themselves, with further complementary functional groups B′ of the polymer P and/or with further functional groups B and/or B′ are able to form covalent bonds to crosslinkers V.
摘要:
The invention relates to a method for producing an adhesive connection between workpieces, comprising the steps of: providing a workpiece having a metal surface, said workpiece comprising a coating at least on a melt surface, said coating comprising a thermoplastic; providing a workpiece having a thermoplastic surface; placing the melt surface and the workpiece having the thermoplastic surface against each other, welding the workpiece having a metal surface and the workpiece having the thermoplastic surface to the melt surface under the effect of ultrasonics.
摘要:
Coating compositions comprising (a.1) at least one binder with functional groups (Gr); (a.2) at least one pigment; and (a.3) at least one corrosion-inhibiting component which comprises a parent structure (GK), at least one functional group (Gr′) which is attached covalently to (GK) and which, when a multicoat paint system containing the disclosed coating composition is thermally cured, reacts with at least one of functional groups (Gr) of the binder (a.1) or functional groups (Gr″) of at least one constituent of an adjacent coating (B), and at least one uni- and/or multidentate, potentially anionic ligand (L) which is different from the functional group (Gr′), is attached covalently to (GK), and, when the multicoat paint system is thermally cured, does not lose its capacity as a chelating agent. Also disclosed is a process for producing a multicoat paint system using the disclosed coating composition.
摘要:
The invention relates to a process for corrosion-proofing metallic substrates that involves in a first stage (I) coating the substrate by electroless immersion into an aqueous bath of an anticorrosion agent K1 with a pH of between 1 and 5, comprising at least one compound having as its cation a lanthanide metal and/or a d-block element metal, bar chromium, and/or having as its anion a d-block element metallate, bar chromium-containing metallates, and at least one oxidation-capable acid, bar phosphorus and/or chromium acids, a conversion being effected on the substrate surface, and in a concluding stage (III) carrying out further coating by deposition of a cathodic electrocoat material.
摘要:
The present invention relates to a composition for coating metallic surfaces, comprising a binder component; a corrosion inhibitor polymer based on an ethylenically monocarboxylic and dicarboxylic acid and, if appropriate, further ethylenical monomers, a solvent component, and, if appropriate, crosslinkable components, and also pigment/filler components. The invention further relates to processes for its preparation and also to methods of coating a metallic surface using the composition, to coated metallic surfaces thus obtained, and to the use of the composition as a primer, particularly in coil coating or in atmospheric corrosion control. After drying, the applied layer preferably has a thickness of at least 3.1 μm and is therefore thicker than a typical pretreatment layer.
摘要:
A method for producing an adhesive connection between a workpiece having a metal surface and a workpiece having a plastic surface with the steps of providing a workpiece having a metal surface that has a coating which includes a thermoplastic, at least at a melt surface; providing a workpiece having a thermoplastic surface; placing the melt surface of the first workpiece having the metal surface and the workpiece having the thermoplastic surface against each other; and welding the workpiece having a metal surface and the non-metallic workpiece having the thermoplastic surface at the melt surface by exposure to ultrasonic.