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Document Title |
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7473324 |
Autodeposition of a coating containing an epoxy resin is accomplished over a metal substrate that has been coated with a zinc phosphate conversion coating without significant removal of the zinc phosphate conversion coating.
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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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7105472 |
The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal ...
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7030183 |
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 liter, 2–60 g Zn, 40–300 g caustic alk...
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6753095 |
The aim of the present invention is to provide a phosphate treated zinc coated steel sheet with excellent workability. A steel sheet coated with a zinc based alloy has a phosphate treated coating on the surface thereof. The phosphate tre...
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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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6645316 |
A process for post-passivation of a phosphated metal surface, characterized in that the phosphated metal surface is treated with an aqueous post-passivation solution which contains from 50 to 500 mg/l of nickel ions and from 200 to 1500 ...
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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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6376092 |
The present invention has an object to provide a surface-treated steel sheet which has highly balanced corrosion resistance and formability, and satisfies fundamental properties required mainly for steel sheets for automobile body, and a...
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6309477 |
The present invention is relates to pretreatment chemicals metal materials to be painted containing at least one kind of sulfur-containing compounds and at least one of phosphorus ion-containing compounds, and an anticorrosive treatment ...
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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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6284059 |
A process is disclosed in which hot rolled steel articles, such as rail car articles, LP tanks and barge articles are cleaned and conversion coated. The cleaning compositions comprise aqueous phosphoric acid, and the conversion coating c...
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5904784 |
Treatment of aluminiferous metal surfaces with an aqueous liquid composition which has a pH value in the range from 1.8 to 4.0 and comprises (A) from 0.01 to 1.0 g/L of phosphate ions, (B) from 0.01 to 0.5 g/L, measured as its total stoi...
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5885373 |
A solution in water of fluorometallate and phosphate anions, divalent and/or trivalent metal cations, and polyhydroxylaminomethyl substituted polymers of vinyl phenol(s) provides an effective and economical post-rinse for conversion coat...
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5795407 |
To improve the water resisting secondary adhesion of paint films to zinc phosphate conversion coatings on aluminum, the initially formed conversion coating is treated by spraying with a second liquid treatment composition that either is ...
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5685922 |
Quaternary ammonium salt having at least one alkyl group of 10 to 20 in carbon number is added to a chemical conversion solution to be at least 20 ppm in concentration, and a chemical conversion coating is formed on a surface of a metal ...
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5472523 |
A final seal rinse or pre-treatment for improving the adhesion and corrosion protection afforded by application of organic coatings to metallic substrates, with the seal rinse comprising an aqueous solution of comprising an effective con...
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5472522 |
To form a darkening-resistant chromate ram on the surface of a galvanized steel sheet, the surface of the galvanized steel shut is treated with a phosphate treatment solution before it is chromate-treated in such a way that zinc phosphat...
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5456767 |
A method for inhibiting corrosion of a metal surface in a liquid medium is described. The method comprises incorporating into the medium a corrosion inhibiting amount of a combination of a surfactant that forms a bilayer on the metal sur...
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5391240 |
The invention concerns a process for a passivating post-treatment of phosphated metal surfaces of iron, steel, galvanized steel, zinc, aluminum, and their alloys, in which the phosphated metal surfaces are brought into contact at tempera...
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5373986 |
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 by fibrillated polytetrafluoroethylene. ...
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5362333 |
Drying into place a covering of an aqueous solution of nickel and/or cobaltous sulfate and/or phosphate salts on a zinc or zinc alloy surface improves at least one of the blackening resistance and corrosion resistance after subsequent ch...
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5360492 |
An aqueous pretreating composition for application to a metal surface, said composition having a pH of from about 3.4 to about 6, comprising at least about 0.01 percent by weight based the total weight of the composition of a substituted...
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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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5324587 |
A laminate suitable for vehicular applications includes at least two sheets of aluminum alloy and an adhesive layer between the sheets bonding them together. An oxide layer on surfaces of the sheets is treated with a phosphorous acid ele...
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5308413 |
A metal surface is processed with dipping by a first zinc phosphating solution in which a fluoride complex and a simple fluoride are contained and a concentration of this simple fluoride is 200 to 300 mg/l on a basis converted into the H...
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5294266 |
The invention is in a composition and process for the chromium free passivating postrinsing of conversion layers on metals before the application of a paint or adhesive. The conversion layers can be on the bases of phosphate layers, at l...
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5196055 |
This invention relates to a two-component, low VOC pretreatment primer comprising: a) an aqueous first component comprising 1) a resin, 2) a zinc chromate pigment, 3) a zinc phosphate pigment, and 4) a package stabilizing ...
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5147472 |
A method and composition for sealing of a conversion coating is disclosed. The method includes contacting a metal substrate, to which has been applied a conversion coating, with an aqueous solution including a heterocyclic alcohol. The p...
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5073196 |
Iron phosphating solutions without accelerators give excellent quality coatings on cold rolled steel and galvanized steel substrates for promoting adhesion of subsequent paint and similar coatings, when the solutions include at least 0.0...
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5039563 |
Disclosed is a surface treating agent which improves the adhesive properties between a metal surface and a paint layer thereon. The surface treating agent is an acidic aqueous solution comprising zinc ions, nickel ions and phosphate ions...
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4978500 |
An inhibitor composition of sodium hexametaphosphate and a water soluble orthophosphate, together with a pH adjusting, water-soluble alkali, effectively prevents corrosion of metal surfaces by sodium chloride brines. This corrosion inhib...
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4975330 |
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 phosphate ions with ions of the group consi...
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4917737 |
Method and composition for sealing of a phosphate conversion coating is disclosed. The method includes contacting a phosphate conversion coating with an acidic aqueous solution of substituted iminodimethylene diphosphonic acids represent...
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4865653 |
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 hydroxylamine agent in the phosphating bath ...
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4830680 |
This invention relates to an aqueous composition useful to deposit a corrosion inhibiting and adhesion promoting coating on a corrodible metal substrate and a method for doing same. The composition has a pH of between about 2 and about 1...
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4698269 |
A porous, sintered powdered metal article having excellent corrosion resistance is provided. A porous metal such as prepared from a sintered iron powder and suitable for further treatment is phosphatized with a solvent phosphatizing comp...
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4678519 |
Method of zinc phosphatization of substrates essentially based on iron, zinc or their alloys, comprising successively: (1) one or several alkaline degreasing steps, (2) one or several rinsing steps with running city water, (3) a...
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4659613 |
A coated metal or ceramic part having improved salt corrosion and oxidation resistance having a liquid binder which comprises phosphate ions and ions of the group of chromate or molybdate ions, and an atomized aluminum powder having an a...
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4650699 |
A stable thixotropic coating composition especially suitable for dipspin application having an aqueous acid binder solution which comprises phosphate ions and ions of the group of chromate ions or molybdate ions, and a dispersible hydrat...
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4626453 |
An acidic aqueous coating composition comprising dissolved phosphate, dissolved aluminum, dissolved dichromate, inorganic colloidal particles and a water miscible organic component including an effective film-forming amount of a water mi...
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4617056 |
A coating composition especially suitable for a machinable aluminum-filled coating possessing improved salt corrosion and oxidation resistance having a liquid binder which comprises phosphate ions and ions of the group of chromate or mol...
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4559087 |
In a process for phosphating composite metals containing steel and zinc surfaces using phosphating solutions based on zinc phosphate by the dipping process, in order to achieve satisfactory formation of the phosphate layer, the composite...
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4548646 |
A coating composition which is thixotropic, that is, which is a gel when not subject to movement and a liquid when subject to movement. It comprises a non-ionic surfactant, an acid-stable, non-colloidal amorphous silica and a phosphate t...
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4544408 |
A stable thixotropic coating composition especially suitable for dipspin application having an aqueous acid binder solution which comprises phosphate ions and ions of the group of chromate ions or molybdate ions, and a dispersible hydrat...
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4537632 |
Coating compositions, coatings, coated parts and methods of use of chromate/phosphate type compositions. The coating compositions are of a type which contains small spheroidal aluminum particles having a defined size. The coated material...
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4517030 |
This invention discloses a process for activating steel surface prior to phosphating treatment wherein the steel surface is cleaned, the cleaned steel surface is then treated with an aqueous activating solution containing titanium and py...
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4504324 |
A method for the treatment of aluminum or aluminum alloy material comprising treating the material in a series of alkaline baths and a series of acid baths connected in series in regular order, said alkaline baths having an alkali concen...
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4497668 |
A process for phosphating zinc-plated metal articles, particularly electrolytically zinc-plated steel sheets, by treatment thereof for a short period with an acidic phosphating solution which, in addition to zinc and phosphate ions, can ...
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