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| Number | Title | Issue Date |
| 7208053 | Method for applying a phosphate covering and use of metal parts thus phospated 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 P2O5, and optionally other components. ... | 04/24/2007 |
| 7105472 | Coating solution for metals and metal alloys 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 alloy. ... | 09/12/2006 |
| 7052592 | Chromium plating method An electrolyte bath and method of electrolytically plating a layer of metallic chromium on a substrate comprises providing an electrolyte bath of a trivalent chromium, passing a current through the bath from an anode to a cathode which receives the substrate, mainta... | 05/30/2006 |
| 7030183 | Surface treating method and surface treating agent 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 alkali, 0.01–50 g adsorbent, 0... | 04/18/2006 |
| 6953146 | Low-temperature flux for soldering nickel-titanium alloys and other metals A low-temperature flux is described which dissolves the refractory oxide layer from a shape memory alloy containing both nickel and titanium, such as Nitinol, and from other metals like stainless steel. The flux is particularly useful for preparing shape memory allo... | 10/11/2005 |
| 6902766 | Two-part aqueous metal protection treatment A two-part metal protection composition includes: an aqueous metal treatment conversion coating component that includes an admixture of an acid and a coating forming component; and an aqueous protective coating component that is applied over metal treated with the a... | 06/07/2005 |
| 6753095 | Zinc-based metal plated steel sheet treated with phosphate being excellent in formability and method for production thereof 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 treated coating comprises mainly... | 06/22/2004 |
| 6677053 | Surface-treated steel sheet and production method therefor 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 on the alloy plating... | 01/13/2004 |
| 6656294 | Method of reducing elution of lead in lead-containing copper alloy, and drinking water service fittings made of lead-containing copper alloy 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 drinking water se... | 12/02/2003 |
| 6645316 | Post-passivation of a phosphatized metal surface 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 mg/l of phosphate ... | 11/11/2003 |
| 6482273 | Preparation of workpieces for cold forming 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 method the workpiece... | 11/19/2002 |
| 6376092 | Surface-treated steel sheet and manufacturing method thereof 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 manufacturing met... | 04/23/2002 |
| 6309477 | Non-chromium pretreatment chemicals 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 of metal materials... | 10/30/2001 |
| 6294262 | Composition and process for anticorrosive treatment of non-ferrous metal 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 CrO3 and an inorganic acid with phosphorous acid as a reducing agent unti... | 09/25/2001 |
| 6284059 | Cleaning and conversion coating of hot rolled steel articles 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 compositions compri... | 09/04/2001 |
| 5904784 | Composition and method for treating the surface of aluminiferous metals 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 stoichiometric equival... | 05/18/1999 |
| 5885373 | Chromium free, low organic content post-rinse for conversion coatings 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 coatings, particularly... | 03/23/1999 |
| 5795407 | Method for pre-treating aluminum materials prior to painting 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 itself a liquid co... | 08/18/1998 |
| 5685922 | Chemical conversion method and surface treatment and method for metal can 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 can with this chem... | 11/11/1997 |
| 5472523 | Method and composition for treatment of phosphate coated metal surfaces 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 concentration of (2-b... | 12/05/1995 |
| 5472522 | Making galvanized steel with excellent darkening resistance 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 phosphate crystals will co... | 12/05/1995 |
| 5456767 | Corrosion inhibition with bilayer-forming surfactants 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 surface in the fluid ... | 10/10/1995 |
| 5391240 | Process for the passivating post-treatment of phosphatized metal surfaces 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 temperatures in the range... | 02/21/1995 |
| 5373986 | Fluoride cleaning of metal surfaces and product 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. This is applied to... | 12/20/1994 |
| 5362333 | Pretreatment for zinc and zinc alloy prior to chromating 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 chromating treatment... | 11/08/1994 |
| 5360492 | Pretreating composition containing substituted triazine compound 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 triazine compound... | 11/01/1994 |
| 5342456 | Process for coating metal surfaces to protect against corrosion 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 comprising: (A) a component... | 08/30/1994 |
| 5324587 | Adhesively bonded aluminum 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 electrolyte, so that ... | 06/28/1994 |
| 5308413 | Process for phosphating metal surface to make thereon a zinc phosphate coating film 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 HF concentration an... | 05/03/1994 |
| 5294266 | Process for a passivating postrinsing of conversion layers 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 least two polyvalen... | 03/15/1994 |
| 5196055 | VOC compliant pretreatment primers 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 agent; and b) an aqueous second component c... | 03/23/1993 |
| 5147472 | Method for sealing conversion coated metal components 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 preferred heterocyc... | 09/15/1992 |
| 5073196 | Non-accelerated iron phosphating 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 0.01 g/L of dissolved... | 12/17/1991 |
| 5039563 | Surface treating agent before coating 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, characterized by... | 08/13/1991 |
| 4978500 | Inhibitor for metal corrosion by brine 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 inhibitor can be used t... | 12/18/1990 |
| 4975330 | Coating compositions containing unreacted hexavalent chromium, a method of applying and an article 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 consisting of chromate ... | 12/04/1990 |
| 4917737 | Sealing composition and method for iron and zinc phosphating process 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 represented, as a class, by... | 04/17/1990 |
| 4865653 | Zinc phosphate coating process 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 expands the range ... | 09/12/1989 |
| 4830680 | Corrosion inhibiting aqueous compositions comprising metal-chelating diphenolamine compounds 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 10 and comprises wa... | 05/16/1989 |
| 4698269 | Sintered, corrosion-resistant powdered metal product and its manufacture 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 composition. The phosp... | 10/06/1987 |
