Class / Patent application number | Description | Number of patent applications / Date published |
148247000 | Contains an atom of hafnium, titanium or zirconium (excludes activating composition) | 21 |
20080245444 | Rinsable metal pretreatment methods and compositions - Chromate-free and metal phosphate free treatments and compositions for applying a conversion or passivation coating for metals, more particularly, steel, zinc coated steel, and aluminum surfaces. The methods of the invention comprise contacting the requisite metal surface with a treatment composition comprising a member or members comprising one or more Group IV B elements, fluoride, and phosphonic acid or phosphonate. Optionally, a silane may be added as a treatment component. | 10-09-2008 |
20090032144 | PRETREATMENT COMPOSITIONS AND METHODS FOR COATING A METAL SUBSTRATE - Disclosed are methods for treating metal substrates, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The methods include contacting the substrate with a pretreatment composition that includes: (a) a group IIIB and/or IVB metal; (b) free fluorine; (c) a metal fluoride salt formed from a metal which forms a fluoride salt having a pK | 02-05-2009 |
20090288738 | PROCESS FOR OBTAINING DESALTED WATER FROM ZIRCONIUM-CONTAINING WASH WATER - A method for recovering demineralized water from zirconium-containing rinse water having a pH lower than 6.0, wherein a) the rinse water has added to it an aqueous solution of Ca(OH) | 11-26-2009 |
20100032060 | Process for preparing chromium conversion coatings for magnesium alloys - Process of coating magnesium alloys to improve the corrosion resistance and adhesive bonding strengths of the alloys. The process comprises treating the magnesium alloys with an acidic aqueous solution comprising, per liter of solution, from about 0.01 to 10 grams of a water soluble trivalent chromium compound, about 0.01 to 10 grams of hexafluorozirconate, about 0.0 to 5.0 grams of at least one hexafluorosilicate and/or a tetrafluoroborate, from about 0.0 to 5.0 grams of at least one water soluble divalent zinc compound and from 0.0 to 10 grams of a water soluble thickener and/or 0.0 to 10 grams of a water soluble surfactant. | 02-11-2010 |
20100126633 | Agent for the Production of Anti-Corrosion Layers on Metal Surfaces - An agent for the production of anti-corrosion layers on metal surfaces, produced by the following steps:
| 05-27-2010 |
20100132843 | Trivalent Chromium-Containing Composition for Use in Corrosion Resistant Coatings on Metal Surfaces - A low sludge trivalent chromium based conversion coating bath is provided which forms corrosion resistant coatings on aluminum and aluminum alloys by immersion in aqueous solutions containing trivalent chromium ions and fluorometallate ions followed by optional rinsing. Trivalent chromium coated aluminum also serves as an effective base for paint primers. | 06-03-2010 |
20110041957 | OPTIMIZED PASSIVATION ON TI/ZR-BASIS FOR METAL SURFACES - The present invention relates to a chromium-free aqueous agent based on water-soluble compounds of titanium and/or zirconium and a source of fluoride ions, copper ions and metal ions selected from the group consisting of calcium, magnesium, aluminum, boron, zinc, iron, manganese and/or tungstene and to a method for the anti-corrosive conversion treatment of metal surfaces. The chromium-free aqueous agent is suitable for the treatment of various metal materials, joined in composite structures, amongst others of steel or galvanized steel or the alloys thereof or any combinations of said materials. Furthermore, surfaces of aluminum and alloys thereof can be treated in an anti-corrosive manner using the agent according to the invention. The anti-corrosive treatment is intended in particular as a pretreatment for a subsequent dip-coating. The invention further relates to a metallic substrate that was treated according to a predefined method sequence with the chromium-free agent according to the invention and to the use thereof, particularly in the automotive production of vehicle bodies. | 02-24-2011 |
20110041958 | Chromium-free solution for treating metal surfaces - An acidic chromium-free solution for treating a metal surface containing: a vanadium cation source and/or a vanadyl cation source; an organic acid as an anion source; and at least one oxoacid as another anion source is provided. The oxoacid is selected from oxoacids of nitrogen, sulfur, phosphorus, boron, and chlorine. A metal component composed of, for example, aluminum or magnesium is brought into contact with the chromium-free solution to form a vanadium coating film of a surface of the metal component. A surface treating process using this chromium-free solution is useful for formation of a coating film having low corrosion resistance and low electric resistance. | 02-24-2011 |
20110048584 | SURFACE TREATMENT METHOD OF METAL MATERIAL - In a process which is before a treatment process of forming a chemical conversion, TiO | 03-03-2011 |
20110094630 | CHEMICAL CONVERSION SOLUTION FOR METAL STRUCTURE AND SURFACE TREATING METHOD - The present invention provides a chemical conversion solution and the surface treating method for realizing high corrosion resistance and high coating adhesion of the metal surface, as well as high throwing power during electrodeposition, and generating no sludge. | 04-28-2011 |
20110132497 | Treatment Solution for Coating Metal Surface - A chromium-free aqueous treatment solution for coating metal surfaces is described. The treatment solution contains fluorocomplex ions of titanium and/or zirconium and molybdate ions, vanadium ions and one or more aromatic carboxylic acids with at least one carboxyl groups and at least two further functional groups, wherein the two further functional groups are selected from the group comprising carboxyl groups, hydroxyl groups, amino groups and nitro groups. | 06-09-2011 |
20110198000 | PROCESS FOR COATING METALLIC SURFACES - A method for treating or pre-treating parts, profiled-pieces, strips, sheet metals or wires having metallic surfaces, in which at least 5% of these surfaces consists of aluminum or of at least one aluminum alloy with an acid aqueous solution which contains fluoride, zinc and phosphate and which has the following dissolved contents in the phosphatizing solution: sodium virtually none, from 0.04 to less than 2 g/L; potassium virtually none or in a concentration ranging from 0.025 to 2.5 g/L; sodium and potassium in a concentration ranging from 0.025 to 2.5 g/L as sodium, whereby the potassium content is converted to sodium on a molar basis; zinc 0.2 to 4 g/L zinc, 5 to 65 g/L calculated as PO | 08-18-2011 |
20110247728 | HALOGEN-FREE TRIVALENT CHROMIUM CONVERSION COATING - Trivalent chromium conversion coatings are provided on a metal substrate wherein the trivalent chromium conversion coating has a halogen content of 1 atom % maximum. | 10-13-2011 |
20120018053 | COMPOSITION FOR CHEMICAL CONVERSION TREATMENT, AND PROCESS FOR PRODUCING A MEMBER HAVING AN ANTICORROSIVE FILM FORMED FROM THE COMPOSITION - As an acidic liquid composition capable of forming an anticorrosive film having an appearance and corrosion resistance comparable to the anticorrosive film formed by chromate treatment on a substrate which has a metallic surface and a complicated shape, a chromium-free acidic liquid composition for reactive chemical conversion treatment for use in forming an anticorrosive film on a metallic surface is provided, the composition comprising: at least one oxidative substance selected from a nitric ion and hydrogen peroxide; at least one carboxylic acid compound selected from the group consisting of carboxylic acids, carboxylate ions, carboxylates, and derivatives of carboxylic acids; an aluminum-containing substance; a zirconium-containing substance; and a sulfate ion, wherein the composition does not substantially contain an organic film-forming component. The composition may further contain a water-soluble metal-containing substance as a film-forming component, the water-soluble metal-containing substance containing one or more elements selected from the group consisting of V, Fe, Cu, Sn, Mo, W, Ce, Co, Ni, Mg, Ca, Mn, and Li. | 01-26-2012 |
20120145282 | CHROMIUM-AND-FLUORINE-FREE CHEMICAL CONVERSION TREATMENT SOLUTION FOR METAL SURFACES, METAL SURFACE TREATMENT METHOD, AND METAL SURFACE COATING METHOD - Disclosed are: a chemical conversion treatment solution for metal surfaces, which enables the formation of a chemical conversion coating film having excellent corrosion resistance and adhesion properties on metal base materials even though the solution does not contain chromium and fluorine, comprising at least one compound (A) selected from a water-soluble titanium compound and a water-soluble zirconium compound and an organic compound (B) that has multiple functional groups and can serve as a stabilizing agent, and which has a pH value of 2.0 to 6.5, wherein the content of the compound (A) is 0.1 to 10 mmol/L, and the content of the organic compound (B) is 2.5- to 10-fold larger than the content of the metal in the compound (A) by mole; and a method for treating the surface of a metal base material or a structure or body using the chemical conversion treatment solution for metal surfaces. | 06-14-2012 |
20130206285 | MANUFACTURING METHOD FOR STEEL SHEETS FOR CONTAINERS - A manufacturing method for steel sheets for containers produces steel sheets with excellent film adhesion qualities. In a method for manufacturing steel sheets upon which is formed a chemical conversion coating having a metal Zr content of 1-100 mg/m | 08-15-2013 |
20140041764 | Steel Pre-Paint Treatment Composition - An aqueous conversion coating composition for treating steel substrates to provide a conversion coating thereon. The conversion coating composition comprises a) a source of aluminum ions; b) hexafluorozirconic acid or its salts; c) at least one pH adjuster; and d) optionally, a surfactant. The conversion coating composition provides a corrosion resistant coating on the metal surface and improves the adhesion of subsequently applied layers. | 02-13-2014 |
20140360630 | PRETREATING ZINC SURFACES PRIOR TO A PASSIVATING PROCESS - The invention relates to a wet-chemical pretreatment of zinc surfaces prior to applying a corrosion-protection coating, which deposits a thin inorganic coating of oxide and/or metallic iron. An iron layer structure which is applied according to the invention, hereinafter referred to as ferrization, improves the achievable corrosion protection of wet-chemical conversion coatings on zinc surfaces. Furthermore, the ferrization process causes both a reduction of the contact corrosion of joined metal components which have zinc and iron surfaces as well as a reduction of corrosive coating migration on cut edges of galvanized steel strips with coating layer structures. In particular, the invention relates to an alkaline composition containing an iron ion source, a reducing agent based on oxoacids of nitrogen and phosphorus, and water-soluble organic carboxylic acids with an amino group at the α, β, or γ position with respect to the acid group and/or the water-soluble salts thereof. | 12-11-2014 |
20160040298 | CHEMICAL CONVERSION AGENT AND METAL SURFACE TREATMENT METHOD - Provided is a chemical conversion agent that, with respect to an aluminum metal material, etc., contributes to superior corrosion and moisture resistance, contributes to superior adhesion with a laminate film, and contributes to superior hydrofluoric acid and alkali resistance. The chemical conversion agent includes: one or more type of metal element (A) selected from a group comprising of zirconium, titanium, and hafnium; vanadium element (B); and a resin (C). The resin (C) includes a polyvinyl alcohol resin (C1). The ratio (Wa/Wb) of the weight-based total content (Wa) of the metal element (A) relative to the weight-based content (Wb) of vanadium element (B) is 0.1-15, and the ratio ((Wa+Wb)/Wc1) of the weight-based total content (Wa+Wb) of the metal element (A) and the vanadium element (B) relative to the weight-based total content (Wc1) of the polyvinyl alcohol resin (C1) is 0.25-15. | 02-11-2016 |
20160201199 | Wet on Wet Method and Chrome-Free Acidic Solution for the Corrosion Control Treatment of Steel Surfaces | 07-14-2016 |
20190145009 | CONVERSION COATINGS FOR METAL SURFACES | 05-16-2019 |