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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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7422793 |
Rinsing or sealing solutions comprising a rare earth element and a valence stabilizer for barrier films. The treated films contain a rare earth/valence stabilizer complex. The rare earth element is selected from cerium, praseodymium, ter...
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7407711 |
Conversion coatings comprising a rare earth element and a valence stabilizer combined to form a rare earth/valence stabilizer complex are described for substrate metals. The rare earth element is selected from cerium, praseodymium, terbi...
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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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7353863 |
A method of surface treating an aluminum alloy base body of an heat exchanger which method enables an etching procedure to be carried out uniformly and quickly and a corrosion-resistant chemical conversion coating to be formed, is effect...
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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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7291217 |
A corrosion-inhibiting pigment comprising a rare earth element and a valence stabilizer combinded to form a rare earth/valence stabilizer complex. The rare earth element is selected from cerium, terbium, praseodymium, or a combination th...
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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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6743303 |
A method for treating a micro-roughened metal surface to improve bonding between the metal surface and a polymer material. The method involves post-treating the micro-roughened conversion coated metal surface with an aqueous organo-silic...
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6743302 |
Excellent adhesion to subsequently applied paint or elastomer is obtained by coating a metal substrate with a phosphate conversion coating by contact with a liquid phosphating solution that contains zinc cations, phosphate anions, and at...
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6733896 |
The present invention comprises a method for treating one or more multi-metal articles. The method comprises exposing the one or more articles to a first treatment composition capable of providing a conversion coating on steel- and zinc-...
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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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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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6231687 |
A phosphating solution that contains from 3 to 30 g/l of zinc ions, from 0.1 to 20 g/l of ferrous ions, from 5 to 60 g/l of phosphate ions, from 5 to 60 g/l of nitrate ions, and a source of hydroxylamine in a concentration corresponding ...
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6168868 |
An improved process for applying a lead-free coating by electrodeposition to an untreated ferrous metal substrate is provided. The substrate need not be phosphated prior to treatment. The process includes the following steps: a) contacti...
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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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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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5855695 |
The composition of a non-chrome post-rinse composition for treating phosphated metal substrates is disclosed. The composition comprises the reaction product of an epoxy-functional material containing at least two epoxy groups; and an alk...
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5851371 |
The phenomenon of "mapping" (surface defects) after electrophoretic painting over phosphate conversion coatings passivated with hexavalent chromium containing passivating compositions can be avoided or reduced by keeping the surface bein...
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5728235 |
An aqueous solution of manganese phosphate and phosphoric acid, preferably with little or no content of any material conventionally recognized as an accelerator or of any divalent metal ions other than manganese and iron, forms a good qu...
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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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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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5662746 |
A rinse solution for the treatment of conversion-coated metal substrates for improving the adhesion and corrosion resistance of siccative coatings, comprising an aqueous solution of a Group IVA metal ion, namely, zirconium, titanium, haf...
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5653823 |
The composition of a non-chrome post-rinse composition for treating phosphated metal substrates is disclosed. The composition comprises the reaction product of an epoxy-functional material containing at least two epoxy groups; and an alk...
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5637404 |
A strip of highly 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 sur...
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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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5603818 |
The invention describes a method of producing an adherent and corrosion-inhibiting multi-layer coating on metal parts comprising the steps of (A) phosphating the metal parts with an aqueous metal phosphating solution; (B) electroph...
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5543174 |
An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core compone...
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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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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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5389162 |
The present invention provides a surface-treating agent for a metal can, which has an effect of elevating smoothness of the metal can, shows a low foaming property and high thermal stability, but not uneasiness at safety, and thereby con...
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5385655 |
The invention describes a method of producing an adherent and corrosion-inhibiting multi-layer coating on metal parts comprising the steps of (A) phosphating the metal parts with an aqueous metal phosphating solution; (B) electroph...
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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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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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5306524 |
An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core compone...
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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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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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5209788 |
This application relates to a water-based passivating composition comprising: (a) an amino compound which is selected from the group consisting of an amino acid and salts thereof and an amino alcohol and salt thereof, and (b) a met...
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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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5149382 |
Disclosed herein is an aqueous composition containing an S-triazine compound having at least one hydroxyl group composition adapted for use in pretreating a ferrous or non-ferrous metal surface.
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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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5082511 |
The cold impact resistance and corrosion resistance of objects having a zinciferous metal surface successively coated with a zinc phosphate conversion coating and an organic surface coating can be improved by utilizing sufficient mangane...
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5063011 |
Methods of doubly coating iron particles. The methods comprise treating the iron particles with phosphoric acid to form a layer of hydrated iron phosphate at the surfaces of the iron particles. The particles are heated in an inert atmosp...
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5045130 |
Combined phosphatization acid solution suitable for producing on a metallic substrate a concomitent deposit of at least two metallic ions, of which at least one is generally selected from the group comprising zinc, manganese and iron, sa...
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5011738 |
A procedure for the application of PTFE-based, self-lubricating coating on a steel bearing element whose chrome and nickel contents are less than 5%, is disclosed. The procedure is characterized by a working process whereby the element u...
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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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4944812 |
A vegetable tannin is condensed with formaldehyde and an amine to provide an acid soluble product which is useful in a metal treatment solution to enhance corrosion resistance and paint adhesion characteristics of a metal surface.
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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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