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7537663 |
Corrosion-inhibiting coating
A corrosion-inhibiting coating, process, and system that provides a tight, adherent zinc- or zinc-alloy coating that is directly deposited onto steel or cast iron surfaces for enhanced corrosion...
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RE40406 |
Process for coating and/or touching up coatings on metallic surfaces
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about...
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7048822 |
Packaging material for polymer cell and method for producing the same
A polymer battery module packaging sheet includes, as essential components, a base layer ( 61 ), an aluminum layer ( 62 ), chemical conversion coatings ( 64 a, 64 b ) coating the opposite surfaces...
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7030183 |
Surface treating method and surface treating agent
A plating solution containing zinc, an electrically conductive salt, an adsorbent, and at least one of mono- to hexavalent metal ions. A treatment using either a solution which contains, all per...
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6946201 |
Chromium (VI)-free conversion layer and method for producing it
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,...
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6677053 |
Surface-treated steel sheet and production method therefor
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...
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6656294 |
Method of reducing elution of lead in lead-containing copper alloy, and drinking water service fittings made of lead-containing copper alloy
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...
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RE38285 |
Treating solution and treating method for forming protective coating films on metals
A metallic surface treating solution characterized in that it is an aqueous solution at pH 0.1 to 6.5 comprising a source of at least one selected from the group consisting of Mo, W, V, Nb, Ta, Ti,...
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6565671 |
Surface-treated steel sheet coated with chromate film for fuel tanks and method of fabricating the same
The present invention relates to a surface-treated steel sheet coated with a chromate layer having excellent corrosion resistance, fuel resistance and seam weldability, and a chromate solution used...
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6461449 |
Conversion coating zinciferous surfaces to resist blackening and white rust
Metal surfaces, particularly the zinciferous surfaces of zinc-coated steel, can be given a chromate conversion coating that is superior in terms of blackening resistance and white rust resistance...
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6387538 |
Surface-treated steel sheet for fuel tanks and method of fabricating same
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...
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6361622 |
Process for coating and/or touching up coatings on metal surfaces
A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilograms of a fluorometallate ion, from about...
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6294262 |
Composition and process for anticorrosive treatment of non-ferrous metal
Disclosed is a composition and a process for anticorrosive treatment of the surface of non-ferrous metal. The composition is obtainable by treating an aqueous solution of CrO 3 and an inorganic...
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6287704 |
Chromate-free conversion layer and process for producing the same
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,...
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6224657 |
Hexavalent chromium-free phosphate-bonded coatings
A heat curable bonding composition of the present invention comprises an aqueous solution containing phosphate ion (PO 4 -3 ) and chromium(III) ion (Cr +3 , or trivalent chromium) and is...
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6190464 |
Chromating solution and chromated metal sheet
In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have...
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6126758 |
Aluminide-silicide coatings, coating compositions, process for coating and improved coated products
An improved aluminide coating especially for superalloy substrates. Slurry coating compositions of eutectic metal alloy powders and of non-eutectic metal powders, including an elemental powder of a...
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6048921 |
Method for applying conversion coating with wick applicator
The present invention relates to an applicator for flowable materials which comprises a generally cylindrical housing having a chamber, a discharge opening, a wick projecting through said discharge...
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5807442 |
Chromate passivating and storage stable concentrate solutions therefor
A concentrated aqueous solution containing: (A) a component of dissolved phosphate ions; (B) a component of dissolved hexavalent chromium; (C) a component of dissolved anions selected from...
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5525431 |
Zinc-base galvanized sheet steel excellent in press-formability, phosphatability, etc. and process for producing the same
A zinc-base galvanized sheet steel which comprises zinc-base plated sheet steel and, formed on the plating layer surface, an inorganic covering layer which contains at least one inorganic oxide in...
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5507884 |
Process for forming a sparingly soluble chromate coating on zinciferous metal coated steel
A highly corrosion-resistant, highly alkali-resistant, and very paintable chromate film on the surface of a steel substrate coated with Zn-containing metal is formed by coating the substrate with...
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5451271 |
Conversion treatment method and composition for aluminum and aluminum alloys
The paint adhesion and corrosion resistance of surfaces of aluminum and its alloys, particularly when using a paint based on poly{vinyl chloride}, is improved by using a conversion coating solution...
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5415702 |
Black chromium-containing conversion coatings on zinc-nickel and zinc-iron alloys
A method is described for preparing a black chromium-containing conversion coating on a zinc-nickel alloy surface containing at least about 8% nickel in the alloy or on a zinc-iron alloy surface....
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5407749 |
Iridescent chromium coatings and method
A method is described for producing an iridescent chromium coating on a zinc-nickel alloy surface containing at least about 8% nickel in the alloy. The method of the invention comprises (A)...
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5399209 |
Composition and method for chromating treatment of metal
A chromate conversion coating with excellent cold workability and protection against corrosion after subsequent painting can be formed on metal surfaces, particularly on galvanized steel sheet, by...
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5395655 |
Composition and process for chromating metal surfaces
A chromating treatment composition particularly suitable for preparing aluminum and stainless steel for clear coating comprises water, anions containing hexavalent chromium, trivalent chromium...
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5373986 |
Fluoride cleaning of metal surfaces and product
A method of cleaning a metal surface includes covering the portion of the metal surface with a cleaning tape. The cleaning tape is chromium in combination with a fluoride ion source bound together...
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5366567 |
Method for chromating treatment of zinc coated steel
A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges...
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5356679 |
Pipe surface coating with conversion and thermosetting resin layer, and process for the coating application
A multilayer pipe surface coating for water system elements requiring high corrosion resistance includes at least one conversion layer and one thermosetting synthetic resin layer.
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5300158 |
Protective coating having adhesion improving characteristics
There is provided a method of treating a copper or copper alloy substrate to provide improved resistance to both oxidation and to chemical attack. The substrate is immersed in an aqueous solution...
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5242714 |
Process for forming protective base coatings on metals
A process for forming a chromium/silica/phosphate protective conversion coating on a metal surface is improved by pretreating the surface with a composition comprising at least one of (i) H 2 TiF...
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5230750 |
Chromating method of zinc-based plated steel sheet
A chromating liquid for forming a chromate film on a Zn or Zn-alloy plated steel sheet, is prepared by adding and mixing a silane coupling agent in a molar ratio of from 0.05 to 0.3 relative to Cr...
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5164235 |
Anti-tarnish treatment of metal foil
A process for imparting tarnish resistance to copper and copper alloy materials, particularly copper foil. The material is first treated with an acidic chromium-containing solution to deposit...
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5141575 |
Surface treatment for zinciferous surfaces
Zinciferous surfaces, particularly those of galvanized steel, may be effectively protected against corrosion, either as treated or after painting, while remaining easy to weld, by contact with an...
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5091023 |
Composition and process for chromating galvanized steel and like materials
The resistance of chromated zinc surfaced steel objects, particularly plates and sheets, to extraction of hexavalent chromium by alkaline degreasing solutions used on the chromated objects, can be...
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5066540 |
Flake materials in coating compositions
A cured coating composition and substrate coated with the cured coating composition which coating is based upon an aqueous acid binder solution containing phosphate and chromate and/or molybdate...
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5039360 |
Method for coating hot metal surfaces
A method for coating a metal surface includes heating an untreated metal surface to a temperature of about 40° C. to 250° C. and spraying a coating composition onto the hot untreated metal...
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4975330 |
Coating compositions containing unreacted hexavalent chromium, a method of applying and an article
A coating composition for providing a part with improved salt spray resistance, which includes undissolved solid hexavalent chromate in an aqueous acid solution which is the reaction product of...
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4971636 |
Method of producing highly corrosion-resistant surface-treated steel plates
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...
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4865653 |
Zinc phosphate coating process
The present invention relates to a composition and process for metal finishing involving the formation of zinc phosphate coatings of desired morphology on a ferrous surface. The inclusion of a...
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4863516 |
Coating composition
A coating composition based upon an aqueous acid binder solution containing phosphate and chromate and/or molybdate ions into which has been dispersed a blend of metallic powder particles of three...
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4812175 |
Passivation process and copmposition for zinc-aluminum alloys
An aqueous acidic treating solution and process for forming a chromium-containing passivate coating on the surface of zinc or zinc-aluminum alloys to enhance bare corrosion resistance and inhibit...
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4761189 |
Process and aqueous compositions for treating metal surfaces
The invention relates to a process for treating metal surfaces, preferably of aluminum, aluminum alloys and steel, for the subsequent application of organic coating compositions. The metal surfaces...
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4749418 |
Chromate coating of zinc surfaces
A chromate composition and process provide improved corrosion resistance and paint adhesion for zinc surfaces. The aqueous acidic composition contains hexavalent and trivalent chromium phosphate...
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4724172 |
Thick coating compositions
Corrosion and oxidation resistant coating compositions containing phosphate, chromate or molybdate and atomized aluminum powder.
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4683157 |
Thixotropic coating compositions and methods
Metal part coated with a cured coating composition comprising (a) an acid aqueous solution of phosphate ions and ions of chromate or molybdate, (b) an acid-stable amorphous silica and (c) a...
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4668305 |
Method for the production of chromium phosphate coatings
The life of chromium phosphate coating baths is extended by at least fully restoring depleted Cr VI ; bath efficiencies are significantly improved.
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4650527 |
Hydrophilic surface-treating process for an aluminum article
The invention involves a nonrinse type hydrophilic surface-treating process capable of imparting hydrophilicity to the surface of a metal material, e.g., aluminum, and, at the same time, forming...
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4647315 |
Copper stainproofing technique
The present invention relates to a technique for improving the tarnish and oxidation resistance of copper and copper base alloy materials. The technique of the present invention involves immersing...
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4647316 |
Metal base coating composition comprising chromium, silica and phosphate and process for coating metal therewith
Disclosed is an aqueous metal treatment composition comprising: (a) a hexavalent chromium compound; (b) a compound selected from the group consisting of silica and silicates and mixtures thereof...
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