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7332021 |
A coating composition comprising an aqueous mixture containing acid-stable particles and one or more fluoroacids. The amount of the acid-stable particles in the coating composition is from 0.005% to 8% by weight on a dry weight basis. Th...
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7063735 |
A coating composition comprising an aqueous mixture containing inorganic particles, a catechol compound, and one or more fluoroacids. The preferred fluoroacids are selected from fluorotitanic acid, fluorozirconic acid, fluorosilicic acid...
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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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6794046 |
An article made of magnesium or its alloys, some or all of whose surface has a conversion coating, the conversion coating comprising MgO, Mn 2 O 3 and MnO 2 plus at least one oxide from the group consisting of vanadium, molybdenum and ...
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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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6464800 |
A visible colored chromium- and phosphorus-free conversion coating can be formed on a metal surface by contacting it with an aqueous liquid composition that comprises an alizarine dye and a product of chemical interaction between a first...
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5723183 |
The invention is the chemical composition and method for forming a chemical conversion coating on ferrous metal surfaces and subsequent coloring of said conversion coating through the application of a water-soluble dye. The conversion co...
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5505792 |
A method of providing color to a polyacrylamide based, dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coa...
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5470613 |
A black, no-rinse conversion coating on metal surfaces is provided. The treatment of a metal such as aluminum or aluminum alloys with a composition of hexavalent chromium, an acrylic/itaconic modified styrene butyl acrylate polymer resin...
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5292378 |
A method of providing color to a dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solutio...
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5215864 |
A method and apparatus for engraving a metal plate in two or more colors. Selected areas of an oxidized aluminum plate are colored by a first dye to which the plate has an affinity. The selected areas may then be sealed by hydration. Por...
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5022938 |
The present invention relates to compositions and methods for providing a corrosion-resistant coating on a zinc-cobalt alloy surface said surface with a hexavalent chromium-containing treatment solution. In a preferred embodiment, the so...
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4814209 |
External rust-staining, for example at the exterior of buildings or on the superstructure or topside of ships, caused by rust dripping onto a surface is inhibited by painting the surface with a top-coat paint comprising a film-forming bi...
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4756772 |
Aluminum articles having porous anodic oxide films are given an exposure-resistant blue coloration by dipping them first in an aqueous solution of a phosphomolybdic acid or a silicomolybdic acid, and then in a solution of a strong reduci...
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4756771 |
A process and composition for producing colorless, cold-sealed, anodized aluminum or aluminum alloy surfaces. The composition comprises an aqueous solution containing nickel ions and a solution of at least one azo or azo metal dye, the c...
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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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4631093 |
Chromate-free aqueous solutions for treating metal surfaces to impart corrosion resistance and decorative colors are disclosed. The treated metal surface equals or exceeds ASTM adhesion standards for chromate treated metal surfaces. The ...
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4487636 |
A process for color coding of a sintered powder metal part is disclosed. The process comprises contacting said metal part with a color formulation comprising: from about 1 to 10 parts of a colorant, from about 1 to 5 parts of nitrocellul...
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4416816 |
Disclosed are the 1:2 chromium complex of the formula ##STR1## and the alkali metal salts thereof which are useful for the coloration of oxide layers produced on aluminum and alloys thereof and for dyeing natural and synthetic polyamides.
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4411937 |
Method and composition for applying an organic coating to a metallic surface, the surface being contacted with an acidic aqueous coating composition comprising an organic coating-forming material, fluoride, and ferric iron, wherein the t...
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4341564 |
Corrosion inhibiting pigments are obtained by partial reduction of a hexavalent chromium compound in aqueous solution obtaining a reaction product containing 5 to 95% of the chromium in lower valent state. In the aqueous reaction mixture...
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4331479 |
A light-sensitive nameplate material comprising an aluminum support having a porous aluminum oxide film on the surface thereof and a light-sensitive organic coating layer comprising an o-quinone diazide provided on the aluminum oxide film.
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4314859 |
A mulit-colored decorative zinc or zinc alloy having locally organic dyestuff-dyed portions in multi-color is prepared by (1) dyeing with a dyestuff zinc or zinc alloy having a dyeable chromate film bonded thereonto, (2) polishing locall...
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4297405 |
A process for the production of a corrosion resistant metallic article having a matt nacreous appearance and the resultant article. The process comprises the steps of coating a metallic substrate with a clear paint comprising a curable r...
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4277555 |
Aluminum substrate suitable for making lithographic plates which has been treated to render the surface hydrophilic and negatively charged and thereafter ionically colored with a cationic dye.
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4238250 |
A multi-colored decorative zinc or zinc alloy having locally organic dyestuff-dyed portions in multi-color is prepared by (1) dyeing with a dyestuff zinc or zinc alloy having a dyeable chromate film bonded thereonto, (2) polishing locall...
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4225350 |
Improved color, brightness and corrosion resistance are imparted to metal surfaces such as zinc plated surfaces, by treatment with a non-toxic solution comprised of sulfuric acid, hydrogen peroxide, a silicate and at least one cationic t...
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4212685 |
The invention is for a process for providing a protective, color receptive coating over aluminum using chemical means without a requirement for the use of an electric current as in electrical anodizing. Absent conventional steps such as ...
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4210499 |
A colored pattern imitating the grain of wood is formed on the surface of an article formed of an aluminum or its alloys by dipping the article, after oxidation process, in a coating bath floating a coating material in a multilinear or m...
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4200475 |
A process for dyeing an aluminum-containing zinc-based alloy, which comprises immersing an aluminum-containing zinc-based alloy in an alkaline solution containing hexavalent chromium ion, further immersing the thus treated alloy in an ac...
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4171230 |
A transfer medium, made, for example, of paper, is imprinted with sublimable dispersion colorants by halftone printing methods, and is suitable for sublimation heat transfer printing on non-sealed anodized aluminum via the trichromatic p...
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4161409 |
A chromium chromate complex, obtained by partial reduction of chromic acid in aqueous media with an organic reducing agent, is converted to pigment form by evaporating the resulting aqueous composition to dryness and sub-dividing the obt...
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4091126 |
Method of dyeing a pattern analogous to the grain of wood onto the surface of a blank consisting of aluminum or alloys thereof having a film of anodic oxidation thereon. A coloring composition containing oil dye is dropped on a water sur...
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3959032 |
Magnetic materials which essentially consist of a phase A with a ferromagnetic spin system and a phase B with an anti-ferromagnetic spin system, phases A and B interacting by exchange coupling, and the manufacture of such materials. The ...
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3917887 |
Dyes of the formula ##SPC1## Wherein R is ##SPC2## Wherein R 1 is amino, anilino or toluidino, R 2 is hydroxy or amino, and R 3 is hydrogen, nitro, --SO 3 M or alkyl, with the proviso that R 3 must be hydrogen if R 1 and/or R 2 is...
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3897278 |
The invention is for a process for providing an oxide coating on aluminum which process uses chemical means only while avoiding the use of an electric current as is required in an anodizing process. Absent conventional steps such as wate...
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3874902 |
A surface color modification caused by anodizing certain aluminum alloys is neutralized by sealing the anodized surface in an aqueous solution containing a specific dye. The dye neutralizes said color modification without leaving a color...
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3844908 |
A process for coloring aluminum or aluminum alloy products which comprises anodically oxidizing a membrane of aluminum or an aluminum alloy in a solution containing a phosphorous oxide acid or an acid mixture of a phosphorous oxide acid ...
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3833374 |
Coloring of anodized aluminum using a resist which includes a dye which can e absorbed by the anodized layer.
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3767474 |
Methods and compositions are provided for dyeing and sealing, or sealing without dyeing, aluminum oxide coatings. Used for this purpose are aqueous compositions containing disodium 4-dodecylated oxydibenzene sulfonate and one or more hyd...
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3765952 |
The invention is for a process for providing an oxide coating on aluminum which process uses chemical means only while avoiding the use of an electric current as is required in an anodizing process. Absent conventional steps such as wate...
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3652429 |
A process for treating anodized aluminum colored with a dye which is insoluble in water comprising sealing the colored anodized surface in a strong solution of a neutral salt in water, which solution is held at or near its boiling point....
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3652224 |
A nondestructive method for detecting cracks in a metal body by selective corrosion of the surface portion within the cracks to enlarge them sufficiently so that they can then be detected by conventional techniques. Specifically, a crack...
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3515598 |
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3472681 |
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3440111 |
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3423251 |
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3407098 |
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3405014 |
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3400021 |
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