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7344607 |
Chromate-free treatments and compositions, for applying a conversion or passivation coating to zinc coated metal surfaces. The compositions comprise a polyamidoamine/epihalohydrin polymer or cationic polyamine/epihalohydrin polymer compo...
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7294210 |
Alkyl-substituted hydroxylamines are useful as aids in the phosphating of metal substrates. In particular, the rate of phosphating and the rate at which manganese compounds are dissolved into aqueous phosphoric acid solutions may be acce...
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7208053 |
Metallic surfaces are coated with an aqueous, acidic phosphate solution containing 10 to 60 g/l zinc, 0.5 to 40 g/l manganese, 50 to 300 g/l phosphate ions calculated as P 2 O 5 , and optionally other components.
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7153348 |
A hexavalent chromium-free surface treating agent for Sn- or Al-based coated steel sheet, comprising a trivalent chromium compound (A), a water-dispersible silica (B), a lubricity imparting component (C) made of one or more waxes of poly...
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7041629 |
The inventive aqueous pickling agent on the basis of sulfuric acid or phosphoric acid and hydrogen fluoride for stainless steels, which pickling agent is free of wetting and emulsifying agents, contains (each as 100 wt-% substance)
...
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7037385 |
An aqueous metal surface treatment composition comprising the following ingredients:
(A) an aqueous dispersion of a phenolic resin that includes a reaction product of
(i) a phenolic resin precursor; (ii) a modifying agent...
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6929705 |
The present invention relates to metallic sheets having an improved antimicrobial property and also related to a method of manufacturing such sheets. More particularly, it relates to the continuous coating on metallic sheets with a resin...
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6881279 |
A chemically and thermally stable chromate free aqueous liquid treatment for metals, especially aluminum, that imparts corrosion resistance as good as that from conventional chromate containing treatments, contains water and a fluoroacid...
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6875334 |
A method, a composition and a method for making the composition for anodizing metal surfaces, especially magnesium surfaces is disclosed. The composition is a basic aqueous solution including hydroxylamine, phosphate anions and nonionic ...
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6858097 |
A chromium- and nitrogen-free brightening and passivating treatment for metal surfaces, particularly iron and steel, comprises: at least one acid; at least one substance containing a peroxy moiety; and at least one organic substance sele...
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6818313 |
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 protection. A process for applying the coa...
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6805756 |
A universal aqueous composition and a process for using such a composition for pretreating metal substrates is provided. The aqueous composition includes a hydroxy functional cyclic compound, such as a tannin, in an amount of at least ab...
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6780256 |
An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion of subsequently coated materials such as...
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6758916 |
A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid that pre...
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6740173 |
The invention concerns a method for protecting metal products against corrosion, characterised in that it consists in applying directly on the metal products, that is without prior treatment, a composition consisting at least of a film-f...
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6706123 |
A liquid iron phosphating concentrate is provided which contains dispersed aromatic carboxylic acid. The aromatic carboxylic acid remains dispersed in the concentrate by incorporation of a thickener in the composition.
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6673470 |
A surface treated tin-plated steel sheet which has an alloy layer formed on the surface of a steel sheet, a tin plating layer being formed on said alloy layer with a remaining exposed portion of the alloy layer having an area of 30% or m...
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6638370 |
By including nitric acid and hydroxylamine in a manganese phosphating composition and controlling the ratio of nitric to phosphoric acids and the ratio of Total Acid to Free Acid within a specified range, satisfactory manganese phosphate...
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6635122 |
Methods of making and using annealable insulated metal-based powder particles are provided. The insulated metal-based powder particles are formed from metal-based core particles that are coated with an annealable insulating material. The...
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6589324 |
A chromium-free agent for treating metallic surface comprising the following (i)-(iv): (i) at least one of (A) a mixture of an aluminum salt and an inorganic oxide particle and (B) an aluminum-containing inorganic oxide particle compris...
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6569264 |
The present invention provides a corrosion inhibitor composition for magnesium or magnesium alloys which contains as an effective component, at least one compound selected from among aromatic carboxylic acids and salts thereof as an effe...
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6565671 |
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 for preparing the surface-treated steel...
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6551417 |
Tri-cation zinc phosphate conversion coating compositions are disclosed. The compositions include a phosphate component, ions of nickel, manganese, and zinc, and a glycerophosphate component, such as disodium glycerophosphate. Coatings f...
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6540845 |
The present invention provides an aqueous agent for treating metal surfaces capable of degreasing and forming a zinc phosphate coat simultaneously. The present metal surface treating agent includes an aqueous solution that includes water...
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6514357 |
A composition for metal surface treatment which comprises an aluminum ion, a magnesium ion, a manganese ion, a water-soluble organic resin, an acid and water; and a surface treated metal material which has been treated with the compositi...
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6482273 |
The invention relates to a method for preparing workpieces suitable for phosphatizing for chipless cold forming by acid pickling, rinsing, drying and treatment with acid reaction lubricants containing phosphate ions. According to said me...
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6478885 |
When a phosphate ester or a dispersed wax is added to a conventional liquid phosphate conversion coating composition, the resulting phosphate coating formed on a metal substrate has a lower coefficient of friction after being oiled than ...
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6478860 |
A highly effective and storage stable conditioning treatment for metal surfaces prior to phosphating them is a suspension in water containing solid miorosize particles of at least one phosphate of a divalent or trivalent metal and an acc...
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6395105 |
A process for phosphating metal surfaces in which a nitrite- and nickel-free zinc-containing phosphating solution is applied to the metal surfaces which, if desired, are then rinsed and subsequently after-rinsed with an aqueous solution ...
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6383307 |
An aqueous metal surface treatment composition that includes (A) an aqueous dispersion of a phenolic novolak resin that includes water and a reaction product of a phenolic resin precursor, a modifying agent and a multi-hydroxy phenolic c...
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6361623 |
A high quality lubricant carrier for lubrication in cold plastic working of iron and steel is provided by a process in which the surfaces of objects to be worked are first treated with a surface conditioning liquid composition that conta...
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6309476 |
This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but he...
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6294262 |
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 acid with phosphorous acid as a reducing a...
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6241830 |
The present invention relates to an anticorrosive treatment including following steps (1) contacting a metal to be treated with an aqueous solution containing one or more kinds of compounds containing phosphorus ions, (2) washing it if d...
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6231688 |
A zinc phosphate-type conversion film having microfine-sized crystals is formed on metal surfaces using a conversion treatment bath that contains zinc ions and phosphate ions along with 50 to 1500 ppm of an organoperoxide conversion acce...
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6214132 |
A pretreatment before phosphating conversion coating is effected by contacting a metal substrate to be coated with a pretreatment composition that has a pH from 4 to 13 and contains dispersed fine particle size alkali metal or ammonium s...
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6200672 |
A surface treated metal sheet which is coated with a layer comprising, as main components, a complex and/or salt between a rare earth metal element and an organic compound having in the molecule one or more functional groups selected fro...
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6168674 |
In a process of phosphatizing metal surfaces, which at least partly consist of iron or steel, in accordance with the low-zinc technology, the metal surfaces are brought in contact with aqueous acid phosphatizing solutions at a temperatur...
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6120618 |
A method of controlling bulk absorption of atomic hydrogen and facilitating degassing of hydrogen from aluminum alloy workpieces during heat treatments in furnaces with ambient and/or moisture-laden atmospheres by exposing the surface of...
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6074464 |
A bonding composition for a heat curable overlay coating for coating a substrate is provided. The bonding composition comprises phosphate ions, permanganate ions, at least one species of metal cation having a valence greater than +1, and...
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6068710 |
Aqueous liquid treatment compositions comprising as active ingredients boric acid and condensed phosphate ions can form iron phosphate containing conversion coatings on ferriferous substrates at rates of at least 0.3 g/m 2 /min. The coa...
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6059896 |
A surface of aluminiferous metal is brought into contact at 25 to 65° C. for 2 to 100 seconds with a surface treatment bath with a pH of 1.0 to 6.0 that contains phosphate ions, dissolved titanium and/or zirconium compounds, dissolved f...
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5972433 |
Methods for treating metal substrates are disclosed. These methods, which comprise contacting the surface to be treated with a composition comprising a Mannich-derivatized polyether, improve the corrosion resistance and/or adhesion prope...
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5965205 |
This invention relates to a process comprising the steps of contacting a metal surface with an aqueous composition comprising water and specific amounts by weight of phosphate ions, condensed phosphate ions and water soluble polymer mole...
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5942052 |
A surface treatment aqueous solution is provided which is superior in corrosion resistance and coating adhesiveness as well as in ability of inhibiting the production of precipitate. A tinned DI can, which has been degreased, is conversi...
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5932292 |
A zinc phosphate conversion coating which is accelerated only with nitrogen free organic peroxides is low-polluting and able to form uniform, fine, and dense conversion coatings that exhibit an excellent paint adherence when thin and exc...
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5925174 |
An aqueous liquid composition for treating the surface of copper-containing metals is a dispersion and/or solution in water and organic solvent, at least one silane coupling agent having a functional moiety selected from vinyl, mercapto,...
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5904785 |
To prevent the deterioration in water-resistant secondary adherence that occurs during prolonged use of a fluoride-containing phosphate conversion coating liquid composition to form a conversion coating on metal surfaces that are at leas...
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5891268 |
Iron phosphate conversion coatings that are well adapted to serve as carriers for metal cold working lubricants, particularly such lubricants that contain polyoxyethylene adducts of long chain primary alcohols as a major lubricating comp...
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5888315 |
A zinc phosphating composition containing organoperoxide along with zinc ions and phosphate ions forms finely crystalline, dense, and thin conversion coatings on metal surfaces that are normally zinc phosphate conversion coated, even at ...
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