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AssigneeChemetall GmbH
InventorsChristian Jung, Toshiaki Shimakura, Norbert Maurus, Heribert Domes, Hardy Wietzoreck, Klaus Bittner, Thomas Kolberg, Marcus Schinzel
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The invention relates to a method for coating a metallic strip. The strip or optionally, the strip sections produced from said strip in the subsequent process, is/are first coated with at least one anticorrosion layer—according to an alternative form of embodiment, this can be left out—and then with at least one layer of a paint-like coating containing polymers. After being coated with at least one anticorrosion layer or after being coated with at least one layer of a paint-like coating, the strip is divided into strip sections. The coated strip sections are then formed, joined and/or coated with at least one (other) paint-like coating and/or paint coating. The paint-like coating is formed by coating the surface with an aqueous dispersion containing the following in addition to water: a) at least one organic film former containing at least one water-soluble or water-dispersed polymer with an acid value of 5 to 200; b) at least one inorganic compound in particle form with an average particle diameter measured on a scanning electron microscope of 0.005 to 0.3 μm; and c) at least one lubricant and/or at least one corrosion inhibitor. The metallic surface that is optionally coated with at least one anticorrosion layer is brought into contact with the aqueous composition and a film containing particles is formed on the metallic surface, this film then being dried and optionally also hardened, the dried and optionally, also hardened film having a layer thickness of 0.01 to 10 μm. The invention also relates to a corresponding aqueous composition.
A method of coating a metallic strip, the strip, or where appropriate strip sections produced from it, in the subsequent operation being first coated with at least one anticorrosion layer and then with at least one layer of a paintlike, polymer-containing layer, the strip, after coating with at least one anticorrosion layer or after coating with at least one layer of a paintlike coating, being divided into strip sections, the coated strip sections then being formed, joined and/or coated with at least one (further) paintlike layer and/or paint layer, the paintlike coating being formed by coating the surface with an aqueous dispersion which comprises besides water a) at least one organic film former comprising at least one water-soluble or water-dispersed polymer having an acid number in the range from 5 to 200, b) at least one inorganic compound in particle form, having an average particle diameter, measured in a scanning electron microscope, in the range from 0.005 up to 0.3 μm diameter, and c) at least one lubricant and/or at least one corrosion inhibitor, the metallic surface coated with at least one anticorrosion layer being contacted with the aqueous composition and a particle-containing film being formed on the metallic surface, and subsequently dried and, as the case may be, additionally cured, the dried and, as the case may be, additionally cured film having a thickness in the range from 0.01 to 10 μm.
A method of coating a metallic strip, the strip being coated with at least one layer of a paint-like, polymer-containing layer without an anti-corrosion layer being applied beforehand, the strip, after coating with at least one layer of a paintlike coating, being divided into strip sections, the coated strip sections then being formed, joined and/or coated with at least one (further) paintlike layer and/or paint layer, the paintlike coating being formed by coating the surface with an aqueous dispersion which comprises besides water a) at least one organic film former comprising at least one water-soluble or water-dispersed polymer having an acid number in the range from 5 to 200, b) at least one inorganic compound in particle form, having an average particle diameter, measured in a scanning electron microscope, in the range from 0.005 up to 0.3 μm diameter, and c) at least one lubricant and/or at least one corrosion inhibitor, the clean metallic surface being contacted with the aqueous composition and a particle-containing film being formed on the metallic surface, and subsequently dried and, as the case may be, additionally cured, the dried and, as the case may be, additionally cured film having a thickness in the range from 0.01 to 10 μm.
The method of any of the, above claims, characterized in that aqueous composition is substantially or entirely free from chromium(VI) compounds.
The method of any of the above claims, characterized in that the element to be coated—in particular a strip or strip section—is subjected to forming after having been coated.
The method of any of the above claims, characterized in that aqueous composition comprises at least one organic solvent, one silane and/or siloxane calculated as silane, at least one crosslinking agent, especially one based on a basic compound, and/or at least one chromium(VI) compound.
The method of any of the above claims, characterized in that the organic film former is in the form of a solution, dispersion, emulsion, microemulsion and/or suspension.
The method of any of the above claims, characterized in that organic film former is at least one synthetic resin, in particular a synthetic resin based on acrylate, ethylene, polyester, polyurethane, silicone polyester, epoxide, phenol, styrene, urea-formaldehyde, derivatives thereof, copolymers, polymers, mixtures and/or addition copolymers.
The method of any of the above claims, characterized in that the organic film former is a synthetic resin mixture and/or addition copolymer which includes synthetic resin based on acrylate, epoxide, ethylene, urea-formaldehyde, phenol, polyester, polyurethane, styrene and/or styrene-butadiene, and from which, during or after the emission of water and other volatile constituents, an organic film is formed.
The method of any of the above claims, characterized in that the organic film former comprises synthetic resins and/or polymers and/or derivatives, copolymers, polymers, mixtures and/or addition copolymers based on acrylate, epoxide, phenol, polyethyleneimine, polyurethane, polyvinyl alcohol, polyvinylphenol, polyvinylpyrrolidone and/or polyaspartic acid, especially copolymers with a phosphorus-containing vinyl compound.
The method of any of the above claims, characterized in that the molecular weights of the synthetic resins, copolymers, polymers and/or derivatives thereof, mixtures and/or addition copolymers are in the region of at least 1000 u, preferably of at least 5000 u, with particular preference from 20 000 to 200 000 u.
The method of any of the above claims, characterized in that the pH of the organic film former in an aqueous formulation, without the addition of further compounds, is in the range from 1 to 12.
The method of any of the above claims, characterized in that the organic film former contains only water-soluble synthetic resins and/or polymers, especially those which are stable in solutions with pH values ≦5.
The method of any of the above claims, characterized in that the organic film former contains synthetic resin and/or polymer which contain carboxyl groups.
The method of any of the above claims, characterized in that the acid groups of the synthetic resins have been stabilized with ammonia, with amines such as morpholine, dimethylethanolamine, diethylethanolamine or triethanolamine, for example, and/or with alkali metal compounds such as sodium hydroxide, for example.
The method of any of the above claims, characterized in that the aqueous composition contains from 0.1 to 1000 g/L of the organic film former, preferably from 2 to 600 g/L.
The method of any of the above claims, characterized in that the aqueous composition comprises at least one partly hydrolyzed or completely hydrolyzed silane.
The method of any of the above claims, characterized in that at least one aminosilane, epoxysilane, vinylsilane and/or at least one corresponding siloxane is present.
The method of any of the above claims, characterized in that the amount of at least one silane and/or siloxane, calculated as silane, in the aqueous composition is preferably from 0.1 to 50 g/L.
The method of any of the above claims, characterized in that as inorganic compound in particle form a finely divided powder, a dispersion or a suspension such as, for example, a carbonate, oxide, silicate or sulfate is added, especially colloidal and/or amorphous particles.
The method of any of the above claims, characterized in that as inorganic compound in particle form particles having an average size in the range from 8 nm to 150 nm are used.
The method of any of the above claims, characterized in that as inorganic compound in particle form particles based on at least one compound of aluminum, barium, cerium, calcium, lanthanum, silicon, titanium, yttrium, zinc and/or zirconium are added.
The method of any of the above claims, characterized in that as inorganic compound in particle form particles based on alumina, barium sulfate, cerium dioxide, silica, silicate, titanium oxide, yttrium oxide, zinc oxide and/or zirconium oxide are added.
The method of any of the above claims, characterized in that the aqueous composition comprises from 0.1 to 500 g/L of the at least one inorganic compound in particle form.
The method of any of the above claims, characterized in that the aqueous composition comprises at least one corrosion inhibitor, based in particular on amine(s), preferably at least one alkanolamine, at least one conductive polymer and/or at least one thiol.
The method of any of the above claims, characterized in that the aqueous composition comprises at least one crosslinking agent based on a basic compound, preferably at least one based on titanium, hafnium and/or zirconium and/or based on carbonate or ammonium carbonate.
The method of any of the above claims, characterized in that the aqueous composition is free from inorganic acids and/or organic carboxylic acids.
The method of any of the above claims, characterized in that as organic solvent for the organic polymers at least one water-miscible and/or water-soluble alcohol, one glycol ether or N-methylpyrrolidone and/or water is used, in the case of the use of a solvent mixture in particular a mixture of at least one long-chain alcohol, such as propylene glycol, for example, an ester alcohol, a glycol ether and/or butanediol with water, but preferably just water without organic solvent.
The method of any of the above claims, characterized in that the amount of organic solvent is from 0.1 to 10% by weight.
The method of any of the above claims, characterized in that as lubricant at least one wax selected from the group consisting of paraffins, polyethylenes, and polypropylenes is used, in particular an oxidized wax.
The method of any of the above claims, characterized in that additionally a conductive polymer is added.
The method of any of the above claims, characterized in that additionally at least one photoinitiator is added in order to allow curing by exposure to actinic radiation.
The method of any of the above claims, characterized in that the aqueous composition comprises where appropriate in each case at least one biocide, defoamer and/or wetting agent.
The method of any of the above claims, characterized in that an aqueous composition having a pH in the range from 0.5 to 12 is used.
The method of any of the above claims, characterized in that the aqueous composition is applied with a temperature in the range from 5 to 50° C. to the metallic surface.
The method of any of the above claims, characterized in that the metallic surface is held at temperatures in the range from 5 to 120° C. on application of the coating.
The method of any of the above claims, characterized in that the coated metallic surface is dried at a temperature in the range from 20 to 400° C. PMT (peak metal temperature).
The method of any of the above claims, characterized in that the coated strips are wound to a coil, where appropriate after cooling to a temperature in the range from 40 to 70° C.
The method of any of the above claims, characterized in that the aqueous composition is applied by rolling, flowcoating, knifecoating, spraying, squirting, brushing or dipping and, where appropriate, by subsequent squeezing off with a roll.
The method of any of the above claims, characterized in that the dried and also, where appropriate, cured film has a pendulum hardness of from 30 to 190 s, measured with a König pendulum hardness tester in accordance with DIN 53157.
The method of any of the above claims, characterized in that the dried and also, where appropriate, cured film has a flexibility such that bending over a conical mandrel in a mandrel bending test very substantially in accordance with DIN ISO 6860 for a mandrel of from 3.2 mm to 38 mm in diameter—but without scoring of the test area—produces no cracks longer than 2 mm which are perceptible when subsequently wetted with copper sulfate as a result of color change as a consequence of copper deposition on the cracked metallic surface.
The method of any of the above claims, characterized in that in each case at least one coating comprising varnish, polymers, paint, adhesives and/or adhesive backing is applied to the dried and also, where appropriate, cured film.
The method of any of the above claims, characterized in that the coated metal parts, especially strips or strip sections are formed, painted, coated with polymers such as PVC, for example, printed, bonded, hot-soldered, welded and/or joined to one another or to other elements by clinching or other joining techniques.
The method of any of the above claims, characterized in that the strip or the strip sections is/are cut, where appropriate, after painting with a paintlike coating and the painted strip sections during cutting and/or then are formed and thereafter joined, where appropriate, to other shaped parts, in particular by crimping, clinching, adhesive bonding, welding and/or another mechanical joining technique.
The method of any of the above claims, characterized in that at least two or three anticorrosion layers are applied in succession, of which each of these two or three layers is an anticorrosion layer selected from the group consisting of coatings based in each case on iron-cobalt, nickel-cobalt, at least one fluoride, at least one complex fluoride, especially tetrafluoride and/or hexafluoride, an organic hydroxy compound, a phosphate, a phosphonate, a polymer, a rare earth compound, including lanthanum and yttrium compounds, a silane/siloxane, a silicate, cations of aluminum, magnesium and/or at least one transition metal selected from the group consisting of chromium, iron, hafnium, cobalt, manganese, molybdenum, nickel, titanium, tungsten, and zirconium, or is a coating based on nanoparticles, but it is also possible where appropriate for at least one further anticorrosion layer to be applied.
The method of any of the above claims, characterized in that the first anticorrosion layer is applied in a drying method and in that the second anticorrosion layer is applied in a drying method or rinse method.
The method of any of the above claims, characterized in that the first anticorrosion layer is applied by a rinse method and in that the second anticorrosion layer is applied by a drying method or rinse method.
The method of any of the above claims, characterized in that the second anticorrosion layer is applied in an afterrinsing step, in particular after the first anticorrosion layer has been applied beforehand on a galvanizing line.
The method of any of the above claims, characterized in that the second anticorrosion layer is applied in a drying method, in particular after the first anticorrosion layer has been applied beforehand on a galvanizing line.
The method of any of the above claims, characterized in that surfaces of aluminum, iron, cobalt, copper, magnesium, nickel, titanium, tin or zinc or alloys comprising aluminum, iron, cobalt, copper, magnesium, nickel, titanium, tin and/or zinc, especially electrolytically galvanized or hot-dip-galvanized surfaces are coated.
The method of any of the above claims, characterized in that coating is carried out with at least one liquid, solution or suspension which is substantially or entirely free from chromium compounds before coating with at least one paint and/or with at least one paintlike polymer-containing layer which comprises polymers, copolymers, crosspolymers, oligomers, phosphonates, silanes and/or siloxanes.
The method of any of the above claims, characterized in that no lead, cadmium, chromium, cobalt, copper and/or nickel is added to the liquid, solution or suspension for the first and/or second anticorrosion layer.
The method of any of the above claims, characterized in that because of the at least one anticorrosion layer—as compared with the state of the art on the priority date—it is possible to forego at least one of the otherwise customary pretreatment layers, paint layers and/or paintlike polymer-containing layers, in particular a pretreatment layer and a paint layer.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers and/or paintlike polymer-containing layers comprises, in addition to water, at least one organic film former with at least one water-soluble or water-dispersed polymer, copolymer, block copolymer, crosspolymer, monomer, oligomer, derivative(s) thereof, mixture thereof and/or addition copolymer thereof.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers and/or paintlike polymer-containing layers [lacuna], in addition to water, a total content of cations, tetrafluoro complexes and/or hexafluoro complexes of cations selected from the group consisting of titanium, zirconium, hafnium, silicon, aluminum, and boron and/or free or otherwise-bound fluorine, in particular from 0.1 to 15 g/L complex fluoride based on F6, preferably from 0.5 to 8 g/L complex fluoride based on F6, or from 0.1 to 1000 mg/L of free fluorine.
The method of any of the above claims, characterized in that the liquid, solution and/or suspension for at least one of the anticorrosion layers and/or paintlike polymer-containing layers [lacuna], in addition to water, a total content of free fluorine or fluorine not attached to tetrafluoro or hexafluoro complexes, in particular from 0.1 to 1000 mg/L calculated as free fluorine, preferably from 0.5 to 200 mg/L, more preferably from 1 to 150 mg/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises, in addition to water, at least one inorganic compound in particle form having an average particle diameter, measured under a scanning electron microscope, in the range from 0.003 up to 1 μm diameter, preferably in the range from 0.005 up to 0.2 μm diameter, based in particular on Al2O3, BaSO4, rare earth oxide(s), at least one other rare earth compound, SiO2, silicate, TiO2, Y2O3, Zn, ZnO and/or ZrO2, preferably in an amount in the range from 0.1 to 80 g/L, more preferably in an amount in the range from 1 to 50 g/L, very preferably in an amount in the range from 2 to 30 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers or paintlike polymer-containing layers [lacuna] at least one corrosion inhibitor selected from the group consisting of organic phosphate compounds, phosphonate compounds, organic morpholine and thio compounds, aluminates, manganates, titanates, and zirconates, preferably of alkylmorpholine complexes, organic Al, Mn, Ti and/or Zr compounds especially of the olefinically unsaturated carboxylic acids, for example, ammonium salt of carboxylic acids such as chelated lactic acid titanate, triethanolamine titanate or triethanolamine zirconate, Zr-4-methyl-γ-oxo-benzyne-butanoic acid, aluminum zirconium carboxylate, alkoxypropenolatotitanate or alkoxypropenolatozirconate, titanium acetate and/or zirconium acetate and/or derivatives thereof, Ti/Zr ammonium carbonate.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers or paintlike polymer-containing layers comprises at least one compound for the neutralization, in particular the slow neutralization, of comparatively acidic mixtures and/or for the corrosion control of unprotected or damaged portions of the metallic surface, based preferably on carbonate or hydroxycarbonate or conductive polymers, more preferably at least one basic compound with a layer structure such as, for example, Al-containing hydroxy-carbonate hydrate (hydrotalcite).
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers in addition to water comprises at least one silane and/or siloxane, calculated as silane, in particular in an amount in the range from 0.1 to 50 g/L, preferably in an amount in the range from 1 to 30 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers in addition to water and/or at least one organic solvent comprises at least one silane and/or siloxane, calculated as silane, in particular in an amount in the range from 51 to 1300 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers where appropriate in addition to water and/or at least one organic solvent comprises at least one silane and/or siloxane, calculated as silane, in particular in an amount in the range from 0.1 to 1600 g/L, preferably in an amount in the range from 100 to 1500 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former in the form of a solution, dispersion, emulsion, microemulsion and/or suspension.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises as organic film former at least one synthetic resin, in particular at least one synthetic resin based on acrylate, ethylene, polyester, polyurethane, silicone-polyester, epoxide, phenol, styrene, styrene-butadiene, urea-formaldehyde, their derivatives, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises as organic film former a synthetic resin mixture and/or addition copolymer comprising synthetic resin based on acrylate, ethylene, urea-formaldehyde, polyester, polyurethane, styrene and/or styrene-butadiene and/or their derivatives, copolymers, crosspolymers, oligomers, polymers, mixtures and/or addition copolymers, from which an organic film is formed during or after the emission of water and other volatile constituents.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises as organic film former synthetic resins and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or their derivatives based on acrylate, polyethyleneimine, polyurethane, polyvinyl alcohol, polyvinylphenol, polyvinyl-pyrrolidone and/or polyaspartic acid, especially copolymers with a phosphorus-containing vinyl compound.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises a synthetic resin whose acid number is in the range from 5 to 250.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises synthetic resins and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or derivatives thereof whose molecular weights are in the range of at least 1000 u, preferably of at least 5000 u or of up to 500 000 u, more preferably in the range from 20 000 to 200 000 u.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises synthetic resins and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or derivatives thereof, in particular based inter alia on pyrrolidone(s), in particular from 0.1 to 500 g/L, preferably from 0.5 to 30 or from 80 to 250 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former whose pH in an aqueous formulation without addition of further compounds is in the range from 1 to 12.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former which contains only water-soluble synthetic resins and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or their derivatives, particularly those which are stable in solutions with pH levels ≦5.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former whose synthetic resin and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or their derivatives contain carboxyl groups.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former in which the acid groups of the synthetic resins and/or polymers, copolymers, block copolymers, crosspolymers, monomers, oligomers, polymers, mixtures and/or addition copolymers and/or their derivatives have been stabilized with ammonia, with amines such as morpholine, dimethylethanolamine, diethylethanolamine or triethanolamine, for example, and/or with alkali metal compounds such as sodium hydroxide, for example.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises from 0.1 to 200 g/L and preferably from 0.3 to 50 g/L of the organic film former.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises from 100 to 2000 g/L and preferably from 300 to 1800 g/L of the organic film former.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers include a monomer fraction, in particular in the region of at least 5% by weight, preferably of at least 20% by weight, more preferably of at least 40% by weight.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises from 0.1 to 50 g/L of cations, tetrafluoro complexes and/or hexafluoro complexes of cations selected from the group consisting of titanium, zirconium, hafnium, silicon, aluminum, and boron.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one organometallic compound, particularly containing titanium and/or zirconium.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers includes at least one silane and/or siloxane calculated as silane in the aqueous composition, preferably in a range from 0.2 to 40 g/L, more preferably in a range from 0.5 to 10 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one partly hydrolyzed silane, at least one wholly hydrolyzed silane and/or at least one siloxane.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one partly hydrolyzed and/or nonhydrolyzed silane, in particular in the case of a silane content of more than 100 g/L, more preferably in the case of a silane content of more than 1000 g/L.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises in each case at least one acyloxysilane, alkylsilane, aminosilane, bis-silyl-silane, epoxysilane, fluoroalkylsilane, glycidyloxysilane, isocyanatosilane, mercaptosilane, (meth)acrylatosilane, mono-silyl-silane, multi-silyl-silane, sulfur-containing silane, ureidosilane, vinylsilane and/or at least one corresponding siloxane.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers has added to it as inorganic compound in particle form a finely divided powder, a dispersion or a suspension such as, for example, a carbonate, oxide, silicate or sulfate, especially colloidal or amorphous particles.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers has added to it as inorganic compound in particle form particles having an average size in the range from 4 nm to 150 nm, in particular in the range from 10 to 120 nm.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers has added to it as inorganic compound in particle form particles based on at least one compound of aluminum, barium, cerium, calcium, lanthanum, silicon, titanium, yttrium, zinc and/or zirconium.
The method of any of the above claims, characterized in that to the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises from 0.1 to 300 g/L of the at least one inorganic compound in particle form.
The method of any of the above claims, characterized in that the liquid, solution or suspension is used for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers as organic solvent for the organic polymers at least one water-miscible and/or water-soluble alcohol, one glycol ether and/or one pyrrolidone such as, for example, N-methylpyrrolidone and/or water;
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises organic solvent in an amount in the range from 0.1 to 10% by weight.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises as lubricant at least one wax selected from the group consisting of paraffins, polyethylenes, and polypropylenes, in particular an oxidized wax.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises a wax lubricant whose melting point is in the range from 40 to 160° C., preferably from 0.1 to 100 g/L, more preferably from 20 to 40 g/L or from 0.1 to 10 g/L, very preferably 0.4 to 6 g/L, for example, a crystalline polyethylene wax.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one rare earth element compound, in particular at least one compound selected from the group consisting of chloride, nitrate, sulfate, sulfamate, and complexes, for example, with a halogen or with an aminocarboxylic acid, in particular complexes with EDTA, NTA or HEDTA, in which context scandium, yttrium, and lanthanum are also regarded as being rare earth elements.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises a rare earth element compound of and/or with cerium, in particular in a mixture with other rare earth elements, for example, at least partly based on mixed metal.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one oxidizing agent, in particular a peroxide, at least one accelerator and/or at least one catalyst, preferably a compound and/or ions of Bi, Cu and/or Zn.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one compound selected from the group of the mono-, bis-, and multi-silanes, especially:
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers comprises at least one compound of the type XYZ, X*Y*Z* and/or X*Y*Z*Y*X*,
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers comprises at least one compound of the type XYZ, where X is a COOH, HSO3, HSO4, (OH)2PO, (OH)2PO2, (OH)(OR′)PO or (OH)(OR′)PO2 group,
The method of any of the above claims, characterized in that the compound of type XYZ, X*Y*Z* and/or X*Y*Z*Y*X* is suitable for forming self-arranging molecules, which may shape a layer of these self-arranging molecules particularly on the metallic surface, preferably a monomolecular layer.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers comprises at least one of the following compounds of type XYZ, X*Y*Z* and/or X*Y*Z*Y*X*:
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers and/or paintlike polymer-containing layers comprises phosphate and zinc, where appropriate also manganese, nickel and/or copper.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or, suspensions for at least one of the anticorrosion layers and/or paintlike polymer-containing layers contains from 0.2 to less than 50 g/L of zinc ions, from 0.5 to 45 g/L manganese ions, and from 2 to 300 g/L phosphate ions, calculated as P2O5.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers and/or paintlike polymer-containing layers comprises phosphate, preferably based on Zn or ZnMn, where appropriate with nickel content.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises phosphate, fluoride, tetrafluoride and/or hexa-fluoride.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers may comprise phosphonate, tetrafluoride and/or hexafluoride.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former, fluoride, tetrafluoride, hexafluoride and/or at least one inorganic compound in particle form, and, where appropriate, at least one silane.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an additive selected from the group consisting of organic binders, biocides, defoamers, corrosion inhibitors, adhesion promoters, wetting agents, photoinitiators, and polymerization inhibitors.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises at least one filler and/or one pigment, in particular at least one electrically conductive pigment selected from the group consisting of dyes, color pigments, graphite, graphite-mica pigments, oxides such as iron oxides, phosphates, phosphides such as iron phosphides, carbon black and zinc.
The method of any of the above claims, characterized in that prior to the application of an anticorrosion layer, paint layer and/or paintlike polymer-containing layer, an activating treatment is applied.
The method of any of the above claims, characterized in that the application of an anticorrosion layer, paint layer or paintlike polymer-containing layer may be followed by application of an afterrinse and/or passivation.
The method of any of the above claims, characterized in that at least one of the liquids, solutions or suspensions for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers comprises an organic film former which, following application to the metallic substrate, is cured by heat and/or actinic radiation, in particular by electrons, UV and/or radiation in the visible light region.
The method of any of the above claims, characterized in that at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers may be only partly cured prior to adhesive bonding, welding, and/or forming and not fully cured until after adhesive bonding, welding and/or forming, the first curing before adhesive bonding, welding and/or forming taking place by actinic radiation—in particular by electrons, UW and/or radiation in the visible light region—and the second curing taking place after adhesive bonding, welding and/or forming, preferably thermally, in particular by radiant heat and/or hot air.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers has a pH in the range from 0.5 to 12.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers is applied to the respective surface at a temperature in the range from 5 to 95° C., preferably in the range from 5 to 50° C.
The method of any of the above claims, characterized in that the substrate and/or the respective surface are held during application of the anticorrosion layer(s) at temperatures in the range from 5 to 120° C.
The method of any of the above claims, characterized in that the coated metallic surface in this case is dried at a temperature in the range from 20 to 400° C. PMT (peak metal temperature).
The method of any of the above claims, characterized in that the coated strips are cut up or wound to a coil, where appropriate after cooling to a temperature in the range from 10 to 70° C.
The method of any of the above claims, characterized in that the divided strips, after pressing, cutting and/or punching, are coated in the edge region with a temporarily applied coating to be removed again or with a permanently protecting coating, e.g., at least one coating based on dry lubricant, phosphate, hexafluoride, paintlike coating and/or paint.
The method of any of the above claims, characterized in that the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers is applied by rolling, flowcoating, knifecoating, spraying, squirting, brushing or dipping and, where appropriate, by subsequent squeezing off with a roll.
The method of any of the above claims, characterized in that the coating applied in each case with the liquid, solution or suspension for at least one of the anticorrosion layers, paint layers and/or paintlike polymer-containing layers is adjusted to a layer weight in the range from 0.0005 mg/m2 to 150 g/m2, preferably in the range from 0.0008 mg/m2 to 30 g/m2, more preferably in the range from 0.001 mg/m2 to 10 g/m2, in particular in the range from 1 to 6 g/m2.
The method of any of the above claims, characterized in that to the partly or fully cured film there is applied in each case at least one coating of paint or of a paintlike, polymer-containing coating to the partly or fully cured film, the first paint layer or paintlike polymer-containing layer may consist essentially of primer, a thinly (i.e., in the range from 0.1 to 10 μm) applied, organic-polymer-containing material, a reaction primer, a shop primer or a wash primer.
The method of any of the above claims, characterized in that at least one coating of paint, a mixture of or with polymers, varnish, adhesive and/or adhesive backing to the at least partly painted strip or the strip at least partly coated in a paintlike manner with a polymer-containing layer, or to the at least partly painted strip section or the strip section coated at least partly in a paintlike manner with a polymer-containing layer is applied.
The method of any of the above claims, characterized in that the clean or cleaned and, where appropriate, activated metallic surface is contacted with the liquid, solution or suspension for one of the anticorrosion layers and at least one film, which where appropriate may also contain particles, may be formed on the metallic surface, which is subsequently dried and, where appropriate, additionally cured, the dried and, where appropriate, also cured film possibly having in each case a thickness in the range from 0.01 to 100 μm, in particular a film with a thickness in the range from 5 up to 50 μm, more preferably in the range from 8 up to 30 μm.
The method of any of the above claims, characterized in that at least one paint layer as undercoat or one paintlike polymer-containing layer as pretreatment primer, primer, primer as replacement of the cathodic dip coat, lubricating primer, reaction primer, welding primer, wash primer, clearcoat and/or topcoat, where appropriate instead of an undercoat is applied.
The method of any of the above claims, characterized in that at least one of the paint layers and/or paintlike polymer-containing layers is cured by heat and/or actinic radiation, in particular by UV radiation.
The method of any of the above claims, characterized in that the coated strips or strip sections are formed, painted, coated with polymers such as PVC, for example, printed, bonded, hot soldered, welded and/or joined with one another or with other elements by clinching or other joining techniques.
An aqueous composition for pretreating a metallic surface prior to a further coating or for treating that surface, characterized in that the composition comprises in addition to water
Dependencies are inferred from the claim text.