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7390847 |
A composition for the treatment of metal surfaces and for the deposition of metals or metal alloys on plastics surfaces contains
a) at least one polymer as component A, composed of the structural element (1)
and at least thre...
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7029541 |
In a preferred embodiment of the present invention, a conversion coating composition comprising chromium (III) ions, cobalt (II) ions, and nitric acid is provided. The coating composition is substantially free of chromium (VI) ions and s...
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6946201 |
A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection ...
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6887321 |
A metal substrate is anodized in a phosphoric acid anodizing solution. The anodized metal substrate is thereafter contacted with a hexavalent chromium free, trivalent chromium containing acid solution to coat the anodized metal substrate...
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6858098 |
A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises: trivalent chromium and oxalic acid in a molar ratio ranging from 0.5/1 t...
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6740424 |
A chromium-free corrosion inhibiting coating composition, which does not utilize harmful chromium compounds and can be used for corrosion inhibition of a metal surface, comprising a slurry mixture in which coated aluminum fine powder tre...
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6719852 |
A processing solution for forming a hexavalent chromium free, corrosion resistant trivalent chromate conversion film on zinc or zinc alloy plating layers comprises a silicon compound; trivalent chromium and oxalic acid in a molar ratio r...
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6677053 |
A surface-treated steel sheet includes a steel sheet, an Al—Zn-base alloy plating layer formed on the steel sheet, a chemical conversion film provided on the alloy plating layer, and a concentric layer of a Cr compound that is formed o...
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6656294 |
It is an object of the present invention to provide a processing method for preventing elution of lead in a lead-containing copper alloy to prevent lead from eluting from a faucet metal, etc. made of a lead-containing copper alloy, and a...
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6560845 |
A prefinished curved reflector suitable for use in recessed lighting, downlighting, head lamps, and tail lamps is made from metal sheet, preferably an aluminum alloy sheet. An outer surface of the metal sheet is either anodized, laminate...
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6554916 |
A treatment method for hydrophilicity for a heat exchanger which can maintain the deodorizing property and hydrohilicity even after a long-time use, and a heat exchanger thus treated for hydrophilicity by said method are provided. After ...
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6428630 |
A method of coating a substrate is provided. A metallic layer comprising at least about 8% nickel is deposited by thermal spraying on a substrate. The metallic layer has an average density greater than about 80%. A slurry layer comprisin...
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6395106 |
A conversion coating process that forms a stable and corrosion-resistant oxide layer on metal or metal oxide substrates or layers. Particularly, the conversion coating process involves contacting the metal or metal oxide substrate or lay...
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6387538 |
A surface-treated sheet for fuel tanks includes a cold-rolled steel sheet with a low carbon content, a zinc or zinc-based alloy plating layer formed on the steel sheet, and a chromate film coated on the zinc or zinc-based alloy plating l...
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6287704 |
A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection ...
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6270589 |
A method of manufacturing a resin-coated aluminum alloy sheet for drawn and ironed cans, which coated sheet can be subsequently formed into a drawn and ironed can without its wall breaking, and having substantial strength, the can-formin...
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6267826 |
A method of manufacturing a resin-coated aluminum alloy sheet for drawn and ironed cans, which can be formed into a drawn and ironed can free from its wall breaking and having enough strength as a can, when it is formed through a composi...
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6221176 |
In one embodiment, the present invention relates to a flexible laminate, comprising a first flexible polymeric film; a copper layer having a microcracking prevention layer on at least one side the microcracking prevention layer sufficien...
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6110297 |
The invention provides an aluminum alloy sheet that has excellent formability, high coat-baking hardenability, excellent corrosion resistance, and is particularly suitable for external automobile body plates. The aluminum alloy sheet com...
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6074495 |
A method for treating aluminum to enhance corrosion resistance of its surface. The chemical conversion coating aluminum and aluminum alloys are exposed to an aqueous PU solution to form a PU film on the surface. The aqueous PU solution c...
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6071629 |
An organic rust-roof treated copper foil characterized in that it has a metallic rust-proof layer formed on the non-adhesive side of the original copper foil and has an organic rust-proof layer formed on said metallic rust-proof layer, t...
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6027580 |
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5993567 |
An aqueous liquid chromate free primary composition for forming a protective coating on metals, particularly aluminum, is made by reacting cobalt(II) cations, carboxylate anions, at least one other type of coordinate complexing agent for...
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5985046 |
A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and th...
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5876517 |
Process for finishing zinc, zinc alloy or cadmium surfaces which consists in bringing the components to be treated into contact first with an acidic chromate-plating bath based on chromium, cobalt and silver salts and then with a top coa...
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5865931 |
A reflective laminated strip includes an aluminum alloy strip having a cleaned and conversion coated outer surface, an adhesive layer adjacent the conversion coated outer surface, and a polymer layer joined to the adhesive layer. An exte...
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5725683 |
A process for making an aluminum alloy lighting sheet product having a reflective surface protected by a UV-stable polymer coating. An aluminum alloy sheet is chemically brightened in an aqueous acidic solution, conversion coated, and th...
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5704995 |
A black uniform coating with excellent adhesion, bend flexibility, and cosion resistant characteristics can be formed on metals such as aluminum and its alloys, zinc and its alloys, and copper and its alloys such as brass, with the depos...
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5637403 |
The present invention comprises an improved organic composite-plated steel plate which is obtained by applying a thermosetting resin to a chromate-coated alloy-plated steel plate and curing this, wherein, various aqueous resin compositio...
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5614585 |
A hydrophilic surface-treating aqueous solution and a hydrophilic surface-treating method are provided to form a film which can maintain its hydrophilicity. The hydrophilic surface-treating aqueous solution contains as main components po...
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5575865 |
A process for coating a workpiece of steel with an anti-corrosive agent, comprising the steps of providing the surface of the workpiece with a chemo-mechanical layer, and chromatizing the chemo-mechanical layer, and characterized by the ...
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5531841 |
An aluminum fluoropolymer laminate and a method for making such a laminate which includes conversion coating the aluminum and bonding the fluoropolymer onto the conversion coated aluminum is described.
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5494535 |
Cleaned or chemically pretreated metal surfaces are modified using aqueous solutions of amino-containing organic polymers, the metal surfaces thus modified being particularly suitable for coating by cathodic electrodeposition.
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5478414 |
A strip of gray reflective aluminum protected by a conversion coating and a light-permeable fluoropolymer coating which is non-adhesively interstitially mechanically bonded to the microscopic irregularities of the conversion coated surfa...
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5401337 |
Seal coating compositions and methods of applying them to metallic surfaces, particularly aluminum or alloys thereof, beating a previously formed protective coating, particularly a conversion coating, such as a chromate or phosphate coat...
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5401334 |
An aluminum fluoropolymer laminate and a method for making such a laminate which includes conversion coating the aluminum and bonding the fluoropolymer onto the conversion coated aluminum is described.
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5384161 |
An aluminum object is manufactured by a process including chromate conversion coating of the aluminum object; sequentially applying a primer coat to the outer surface and thereafter applying a dielectric substrate basecoat; vacuum metall...
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5356528 |
A copper foil for printed circuits having a rust-preventive and heat-discoloration resistant coat, comprising a first layer of zinc or an alloy or a compound or a composition including zinc mainly, and a second layer including a silane c...
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5350791 |
Substantially improved retention of hydrophilicity after exposure to high temperature can be provided on a metal substrate, particularly an aluminum alloy of the type used for heat exchanger fins by an aqueous liquid hydrophilicizing tre...
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5342456 |
A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly galvanized steel, by a dry-in-place aqueous acidic liquid comprisin...
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5332488 |
A magnetically anisotropic magnet substrate is coated with at least one layer of nickel plating followed by a chromate layer. The chromate top layer improves the corrosion resistance of the coated magnet substrate. In a preferred embodim...
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5304257 |
Corrosion resistant coatings are formed on aluminum by immersion in aqueous olutions containing chromic salts, a fluoride ion from compounds such as a fluosilicate with an alkali added near or slightly beyond the precipitation of the ins...
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5226976 |
Seal coating compositions and method of applying same, to metallic surfaces, particularly aluminum or alloys thereof, containing a previously formed protective coating on the metal surface, to provide for improved corrosion resistance be...
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5178690 |
A process for forming improved chromate conversion coatings on zinc surfaces by treating the zinc surface with an aqueous acidic chromating solution which contains hexavalent chromium and a soluble inorganic salt which has an cation whic...
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5009962 |
Hydrophilic coatings on aluminum plates comprising, on a solid basis, 5-25 parts by weight of a sodium salt and/or a potassium salt of carboxymethylcellulose, and 25-50 parts by weight of an ammonium salt of carboxymethylcellulose, and 2...
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4971636 |
A method of producing highly corrosion-resistant surface-treated steel plates where Cr elusion is small in spite of drying at low temperatures and corrosion resistance is excellent. In a process for producing surface treated steels where...
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4956027 |
An aqueous solution of a reducing agent is applied to a chromate coated metal surface to reduce the extent to which the chromate coating undergoes dissolution during a subsequent cleaning process.
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4908075 |
An aqueous surface treatment composition for forming a hydrophilic coating comprising: (a) alkali metal silicate, (b) aminoalcohol, and (c) a water-soluble resin selected from the group consisting of a water-soluble nylon, a natural poly...
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4702968 |
A heat resistant precoated steel sheet suitable for use in the manufacture of a muffler of an automobile exhaust gas system comprising: a hot dip aluminized steel sheet, a chromate pretreatment layer formed on at least one surface ...
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4695516 |
A heat resistant precoated steel sheet suitable for use in the manufacture of a muffler of an automobile exhaust gas system comprising: a hot dip aluminized steel sheet, a chromate pretreatment layer formed on at least one surface ...
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