Contains Organic Material Patents (Class 148/274)
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Patent number: 5935656Abstract: A process for sealing anodized metal surfaces is characterized by bringing the anodized metal into contact with an aqueous solution at a temperature from 75.degree. C. to the boiling point of the solution for a time equal to from 0.5 to 2 minutes per micrometer of anodized layer thickness. The solution contains: a) from 0.0001 to 5 g/l of one or more alkali metal and/or alkaline earth metal ions and b) from 0.0005 to 0.5 g/l of one or more organic acids selected from: polycarboxylic acids with from 3 to 6 carboxyl groups; phosphonic acids; and/or polyphosphinocarboxylic acids, the solution containing a greater amount of metal ions of group a) than is needed to insure complete neutralization of the acids of group b).Type: GrantFiled: April 20, 1998Date of Patent: August 10, 1999Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Torsten Koerner, Josef Kresse, Wolf-Achim Roland, Juergen Lindener
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Patent number: 5925174Abstract: 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, amino and glycidyloxy moieties bonded to one carbon atom in the silane coupling agent and other epoxy moieties bonded to two adjacent carbon atoms in the silane coupling agent and at least one copper inhibitor compound selected from azoles, azines, aromatic secondary amines, and aromatic diacylhydrazides. Treatment with this composition provides excellent migration resistance, an excellent solder resistance, and a very durable adhesiveness to a variety of copper containing metal surfaces.Type: GrantFiled: November 14, 1997Date of Patent: July 20, 1999Assignee: Henkel CorporationInventors: Masayuki Aoyama, Ryoji Morita, Jyun Kawaguchi
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Patent number: 5891268Abstract: 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 component, can be formed on ferriferous surfaces within practical times such as 5 to 10 minutes by contact with an aqueous solution of almost neutralized phosphoric acid that has sufficient Free Acid and/or Total Acid content to form a heavier phosphate conversion coating than do conventional iron phosphating compositions. The phosphate conversion coating forming aqueous liquid composition advantageously also contains an accelerator component such as chlorate or hydroxylamine.Type: GrantFiled: December 6, 1996Date of Patent: April 6, 1999Assignee: Henkel CorporationInventors: Kenneth J. Hacias, John M. Kukalis
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Patent number: 5885373Abstract: 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 predominantly zinc phosphate coatings that also contain manganese and may contain other cations.Type: GrantFiled: June 11, 1997Date of Patent: March 23, 1999Assignee: Henkel CorporationInventor: Michael L. Sienkowski
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Patent number: 5876517Abstract: Process for finishing zinc, zinc alloy or cadmium surfaces which consists in bringing the components to be treated into contact first with an acidic chromate-plating bath based on chromium, cobalt and silver salts and then with a top coat bath comprising a colloidal silica, a corrosion inhibitor, a complexing agent, a surfactant and a black dye.Type: GrantFiled: October 28, 1997Date of Patent: March 2, 1999Assignee: Atotech Deutschland GmbHInventor: Eliane Jeannier
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Patent number: 5873953Abstract: An improved process that is commercially practical for forming an oxide film cobalt conversion coating exhibiting corrosion resistance and paint adhesion properties on an aluminum or aluminum alloy substrate (for example, aerospace and aircraft parts), the process including the steps of: (a) providing an oxide film forming cobalt conversion solution including an aqueous reaction solution, containing no triethanolamine (TEA), prepared by reacting the following starting materials: (1) a water soluble cobalt-II salt; (2) a water soluble ammonium salt; (3) a water soluble inorganic complexing agent selected from the group consisting of water soluble metal nitrites; (4) a water soluble organic complexing agent; and (5) a water soluble oxidizing agent; and (b) contacting the aluminum or aluminum alloy substrate with the aqueous reaction solution for a sufficient amount of time to oxidize the surface of the substrate, whereby the oxide film cobalt conversion coating is formed, thereby imparting corrosion resistanceType: GrantFiled: December 26, 1996Date of Patent: February 23, 1999Assignee: The Boeing CompanyInventor: Matthias P. Schriever
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Patent number: 5846342Abstract: A chromium-free aqueous liquid surface treatment agent that can impart both a good corrosion resistance and a good paint adherence to zinciferous-plated steel sheet contains as its essential components polyhydroxyaryl carboxylic acid and/or depside thereof and silane coupling agent with the formula (YR).sub.m R.sub.n SiX.sub.(4-m-n), in which R denotes alkyl groups; X is the methoxy or ethoxy group; Y is the vinyl, amino, mercapto, glycidoxy, or methacryloxy group; m=1 to 3; and n=0 to (3-m). The total content of said essential components is preferably 1 to 50 weight %.Type: GrantFiled: August 2, 1996Date of Patent: December 8, 1998Assignee: Henkel CorporationInventors: Masayuki Aoyama, Takao Ogino
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Patent number: 5843242Abstract: An aqueous liquid chromate free primary composition for forming a protective coating on metals, particularly aluminum, is made by reacting cobalt(II) cations, carboxylate anions, at least one other type of coordinate complexing agent for cobalt(III) cations, and an oxidizing agent in an aqueous solution in which the molar ratio of carboxylate anions to cobalt(II) cations is from 0.10 to 6.8 and the aqueous solution contains no more than 1% of each of ammonia, ammonium ions, and nitrite ions. The primary layer formed by this or any other composition that forms a coating containing metal atoms and oxygen atoms on a metal substrate is advantageously sealed by further treatment with an aqueous solution of sodium ammonium decavanadate, optionally after an intermediate step of immersing in water for a few minutes between the primary treatment and the sealing treatment.Type: GrantFiled: August 15, 1996Date of Patent: December 1, 1998Assignee: Henkel CorporationInventor: Shawn E. Dolan
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Patent number: 5735973Abstract: Described herein is a printed circuit board surface protective agent containing compounds as expressed by Formula I. ##STR1## (herein, Y is a linear or a branched alkyl group having 1 to 20 carbon atoms or (2) ##STR2## X is any of halogen atom, amino group, di-lower alkylamino group, hydroxy group, lower alkoxy group, cyano group, formyl group, acetyl group, benzoyl group, carbamoyl group, carboxyl group, lower alkoxycarbonyl group, or nitro group; X' is any of alkyl group, halogen atom, amino group, di-lower alkylamino group, hydroxy group, lower alcoxy group, cyano group, formyl group, acetyl group, benzoyl group, carbamoyl group, carboxyl group, lower alkoxycarbonyl group or nitro group; n is an integral number from 1 to 4, and X may be either identical or different when n is in a range from 2 to 4. m is an integral number in a range from 1 to 10, p is 0 or an integral number in a range from 1 to 4, and X' may be either identical or different when p is in a range from 2 to 4.Type: GrantFiled: December 20, 1993Date of Patent: April 7, 1998Assignee: Tamura Kaken CorporationInventors: Yasumichi Sasahara, Takao Ohno, Seiji Shibata
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Patent number: 5624712Abstract: Aluminum surfaces are protected with increased corrosion resistance by anodize, and sealing with a liquid fatty acid free of flammable solvents, suitably in the presence of a heterocyclic aromatic azole treating agent where the aluminum surface is of a copper containing aluminum alloy.Type: GrantFiled: June 8, 1995Date of Patent: April 29, 1997Assignee: Alumitec Products Corp.Inventor: Garson P. Shulman
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Patent number: 5601663Abstract: A process for producing a black oxide coating on an aluminum or aluminum alloy component in which the process entails a single treatment step with a novel solution to rapidly produce the desired black oxide coating. The process includes cleaning the surface to be coated and then, without first undergoing anodization, treating the surface with a solution that develops a black oxide on the surface. The reactive component of the solution comprises distilled water containing chlorides, sulfates and bicarbonates of sodium salts. The remainder of the solution includes a catalyst and a substance for maintaining the pH of the solution at a level sufficient to promote the reaction between the surface of the aluminum alloy and the reactive constituents.Type: GrantFiled: February 22, 1996Date of Patent: February 11, 1997Assignee: General Motors CorporationInventors: Ravi Rungta, Robert R. Ahrens, Mingguang Zhu
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Patent number: 5587025Abstract: A method for passivating the surfaces of a nuclear steam generator and a solution therefor includes EDTA and hydrogen peroxide in a temperature range of 37.degree. C. to 49.degree. C. The solution is adjusted to have a pH of between about 9.2 and 9.5 and used on the surfaces for two hours or more for passivating the surfaces.Type: GrantFiled: March 22, 1995Date of Patent: December 24, 1996Assignees: Framatome Technologies, Inc., The Babcock & Wilcox CompanyInventors: John M. Jevec, Randall P. Dow
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Patent number: 5551994Abstract: An improved process that is commercially practical for forming an oxide film cobalt conversion coating exhibiting corrosion resistance and paint adhesion properties on an aluminum or aluminum alloy substrate for use in aircraft/aerospace applications (for example, an aluminmn or aluminum alloy commercial airplane part), the process comprising the steps of: (a) providing an oxide film forming cobalt conversion solution comprising an aqueous reaction solution prepared by reacting the following starting materials:(1) a cobalt-II salt;(2) an ammonium salt;(3) one or more inorganic complexing agents selected from a soluble metal carboxylate, a soluble metal nitrite, or ammonia;(4) a water soluble amine; and(5) an oxidizing agent; and(b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time to oxidize the surface of the substrate, whereby the oxide film cobalt conversion coating is formed, thereby imparting corrosion resistance and paint adhesion properties to the substrate.Type: GrantFiled: August 9, 1994Date of Patent: September 3, 1996Assignee: The Boeing CompanyInventor: Matthias P. Schriever
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Patent number: 5458698Abstract: A lubricant and surface conditioner for formed metal surfaces, particularly aluminum and tin beverage containers, reduces the coefficient of static friction of said metal surfaces and enables drying said metal surfaces at a lower temperature. The conditioner includes a water-soluble organic material selected from alkoxylated or non-alkoxylated castor oil triglycerides and hydrogenated castor oil derivatives; alkoxylated and nonoalkoxylated amine salts of a fatty acid including mono-, di-, tri-, and poly-acids; alkoxylated and non-alkoxylated amino fatty acids; alkoxylated and non-alkoxylated fatty amine N-oxides, alkoxylated and non-alkoxylated quaternary ammonium salts, oxa-acid esters, and water-soluble alkoxylated and non-alkoxylated polymers.Type: GrantFiled: September 23, 1993Date of Patent: October 17, 1995Assignee: Henkel CorporationInventors: James P. Bershas, Timm L. Kelly, Gary L. Rochfort
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Patent number: 5456767Abstract: 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 and a corrosion inhibitor that solubilizes in the medium in the presence of the surfactant. The amount of surfactant is sufficient to produce a bilayer on the metal surface in the medium. The combination isa. an anionic surfactant that forms a bilayer on the metal surface and a cationic corrosion inhibitor;b. a cationic surfactant that forms a bilayer on the metal surface and an anionic corrosion inhibitor;c. an ionic surfactant that forms a bilayer on the metal surface and an ionic corrosion inhibitor having a pendent, generally straight chain hydrocarbon or substituted hydrocarbon moiety of from about 10 to about 18 carbon atoms; ord. an ionic surfactant that forms a bilayer on the metal surface and a non-ionic corrosion inhibitor.Type: GrantFiled: October 15, 1993Date of Patent: October 10, 1995Assignee: Petrolite CorporationInventors: Sayed S. Shah, Thomas G. Braga, Bernardus A. Oude Alink, Jacob Mathew
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Patent number: 5417775Abstract: Process for sheet titanium pickling followed by passivation. Pickling is carried out in an aqueous solution containing H.sub.2 SO.sub.4, HF and Fe.sup.3+ at .ltoreq.50.degree. C., continuously fed with an air flow, and with a stabilized H.sub.2 O.sub.2 quantity adjusted to the bath redox potential to be kept at -200 to 0 mV. Passivation is carried out in an aqueous bath containing 4 to 10 g/l HF, .ltoreq.1 g/l Fe.sup.3+, and not containing H.sub.2 SO.sub.4, with a redox potential kept at 500-600 mV by continuous feeding of stabilized H.sub.2 O.sub.2.Type: GrantFiled: September 24, 1993Date of Patent: May 23, 1995Assignee: ITB S.r.l.Inventor: Cesare Pedrazzini
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Patent number: 5391238Abstract: Methods of forming a dried in place conversion coating on metal surfaces such as aluminum and aluminum alloys. The methods comprise contacting the metal with an aqueous solution of a water soluble maleic or acrylic acid/allyl ether copolymer alone or with an acid.Type: GrantFiled: October 22, 1993Date of Patent: February 21, 1995Assignee: Betz Laboratories, Inc.Inventors: David W. Reichgott, Fu Chen
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Patent number: 5385616Abstract: A method for inhibiting corrosion of a metal surface bearing a corrosion product including ferrous ions is disclosed. The method comprises applying to the surface a reaction product of an alcohol and a fatty acid maleic anhydride adduct produced by a reaction between maleic anhydride and an unsaturated fatty acid. Related compositions and coated metal surfaces are also disclosed.Type: GrantFiled: February 14, 1994Date of Patent: January 31, 1995Assignee: Petrolite CorporationInventors: James A. Dougherty, George W. Dear, Bernardus A. Oude
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Patent number: 5378293Abstract: (A.) A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion solution comprising an aqueous reaction solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.01 mole per liter of solution to the saturation limit of the cobalt-III hexacoordinated complex, and acetic acid; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plating, Zn plating, Zn--Ni plating, and steel. The cobalt-III hexacoordinated complex may be present in the form of [Co(NH.sub.3).sub.6 ]X.sub.3 wherein X is Cl, Br, NO.sub.3, CN, SCN, 1/3PO.sub.4, 1/2SO.sub.Type: GrantFiled: May 6, 1993Date of Patent: January 3, 1995Assignee: The Boeing CompanyInventor: Matthias P. Schriever
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Patent number: 5376189Abstract: Disclosed is a composition and process for the treatment of metallic surfaces, which comprises treating said surface with an aqueous solution comprising a benzimidazole compound which has at least one carboxylic or sulfonic acid group directly or indirectly attached to said benzimidazole compound.Type: GrantFiled: November 8, 1993Date of Patent: December 27, 1994Assignee: MacDermid, IncorporatedInventor: Peter E. Kukanskis
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Patent number: 5344504Abstract: An aqueous coating solution for zinc containing metals such as galvanized iron and steel. The coating solution is resistent to the formation of zinc induced sludge and can be operated with little or no overflow. The aqueous treatment solution contains from 0.1 to 10 grams per liter of a fluorometallic acid, from 0.015 to 6 grams per liter of a salt of a transition metal, from 1 to 30 grams per liter zinc; and optionally from 0.1 to 3 grams per liter a polymer of acrylic acid, methacrylic acid, or an ester thereof with a C1 to C8 alkanol.Type: GrantFiled: June 22, 1993Date of Patent: September 6, 1994Assignee: Betz Laboratories, Inc.Inventors: Philip D. Deck, Jeffrey I. Melzer, William L. Harpel
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Patent number: 5312491Abstract: Rust inhibiting compositions having improved elasticity properties are provided. The compositions contain oxime based rust converter compounds formulated with a latex based paint to provide a flexible film coating that acts as a barrier to oxygen and water vapor diffusion to the metal surface. Methods for applying the rust inhibiting compositions to metal surfaces are also provided.Type: GrantFiled: June 8, 1992Date of Patent: May 17, 1994Inventor: Randolph K. Binter
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Patent number: 5298092Abstract: (A.) A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion reaction solution comprising an aqueous, alkaline solution containing a soluble cobalt-III hexacoordinated complex, the concentration of the cobalt-III hexacoordinated complex being from about 0.1 mole per gallon of solution to the saturation limit of the cobalt-III hexacoordinated complex; and (b) contacting the substrate with the aqueous reaction solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plating, Zn plating, Zn-Ni plating, and steel. The cobalt-III hexacoordinated complex may be present in the form of [Co(NH.sub.3).sub.6 ]X.sub.3 wherein X is Cl, Br, NO.sub.3, CN, SCN, Y.sub.3 PO.sub.4, SO.sub.4, C.Type: GrantFiled: May 17, 1990Date of Patent: March 29, 1994Assignee: The Boeing CompanyInventor: Matthias P. Schriever
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Patent number: 5169458Abstract: Corrosion resistance of anodized aluminum surfaces is improved by conditioning the surface with a low molecular weight (2-7 carbon atoms) alcohol, and sealing the surface with long chain (10-24 carbon atom) carboxylic acid at low temperatures below about 35-50 degrees centigrade, the alcohol being a solvent for the acid.Type: GrantFiled: February 2, 1990Date of Patent: December 8, 1992Inventors: Garson F. Shulman, Albert J. Bauman
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Patent number: 5149382Abstract: 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.Type: GrantFiled: August 23, 1991Date of Patent: September 22, 1992Assignee: PPG Industries, Inc.Inventor: Ralph C. Gray
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Patent number: 5059258Abstract: Disclosed is a method of producing a functionalized layer and an aluminum hydroxide layer on an aluminum substrate, the aluminum hydroxide layer located between the substrate and the functionalized layer. The method comprises the steps of subjecting an aluminum substrate to a hydrothermal treatment in an aqueous solution having a pH in the range of 2 to 14 to form a layer of aluminum hydroxide on said substrate and thereafter treating said aluminum substrate with a phosphorus-containing acid selected from phosphonic and phosphonic acid to form a functionalized layer on said aluminum hydroxide layer, the functionalized layer comprised of the reaction product of said acid and the layer of aluminum hydroxide.Type: GrantFiled: August 23, 1989Date of Patent: October 22, 1991Assignee: Aluminum Company of AmericaInventors: Karl Wefers, Gary A. Nitowski, Larry F. Wieserman
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Patent number: 5047094Abstract: This invention relates to a process for coating a surface of a metal I, such as iron, steel, zinc, copper, tin or aluminum with a hydroxy oxime complex of metal II which may be lead of zinc. The complex can be incorporated in a surface coating composition.Type: GrantFiled: April 20, 1989Date of Patent: September 10, 1991Assignee: Imperial Chemical Industrials, PLCInventors: Bernard Tury, Glyn R. John, Noreen L. Thomas
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Patent number: 4944812Abstract: 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.Type: GrantFiled: November 16, 1988Date of Patent: July 31, 1990Assignee: Henkel CorporationInventors: Andreas Lindert, Stephen M. Wolpert
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Patent number: 4943453Abstract: The part is subjected to action of an acid aqueous bath in order to cause the surface of the part to be porous over a thickness which is a fraction of the thickness of the zinc which it includes, and the part is caused to adsorb at least one sealing material.Type: GrantFiled: May 25, 1988Date of Patent: July 24, 1990Assignee: Societe Civile de Recherche D.B.B.Inventors: Yves Baziard, Robert Brun, Annette P. Duprat
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Patent number: 4830680Abstract: 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 water-soluble or water-dispersible metal-chelating diphenolamine compounds.Type: GrantFiled: December 7, 1987Date of Patent: May 16, 1989Assignee: Ford Motor CompanyInventors: Walter O. Siegl, Mohinder S. Chattha