From Metallic Substrate Patents (Class 510/202)
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Patent number: 6586380Abstract: This invention concerns a composition useful as a paint remover, comprising: alkylene carbonate such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water, and optionally an alcohol such as benzyl alcohol. In another broad respect, this invention concerns a process for removing paint, comprising: applying a composition containing alkylene carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. In another broad respect, this invention is a composition useful as a paint remover, comprising: dialkyl carbonate, hydrogen peroxide, and water, optionally containing an alcohol, optionally containing a glycol ether. In another broad respect, this invention is a process for removing paint, comprising: applying a composition containing dialkyl carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint.Type: GrantFiled: February 1, 2002Date of Patent: July 1, 2003Assignee: Huntsman Petrochemical CorporationInventors: Edward T. Marquis, Robert E. Baldwin
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Publication number: 20030114328Abstract: The present invention relates to a water-soluble composition for removing rust from steel bars and steel frames, which is environmentally harmless and permits improving work efficiency by allowing work to be conducted in a state where rust was simply removed from the steel bars and frames by applying it on the steel bars or frames with a spray or brush. The rust-removing preparation of the present invention comprises a mixture of 10-11% by weight of phosphoric acid, 6-7% by weight of sodium pyrophosphate, 6-7% by weight of a hard water softener, 7-8% by weight of zeolite, 2-3% by weight of xanthan, 2-3% by weight of a surfactant, 4-5% by weight of stearic acid, 6-7% by weight of methyl alcohol and 2-3% by weight of a defoamer in 50-51% by weight of water.Type: ApplicationFiled: September 18, 2002Publication date: June 19, 2003Inventor: Kwon-Taeg Kim
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Publication number: 20030109394Abstract: The present invention is directed to cleaning compositions for metal surfaces, including both concentrates and ready-to-use solutions. These compositions include a source of calcium ion, a source of alkalinity, a chelating agent, and a surfactant. In some embodiments, a water-soluble or water-dispersible acid-substituted polymer is also included. Additionally, in some embodiments, specific surfactants or chelating agents are used to enhance the performance of the composition.Type: ApplicationFiled: September 28, 2001Publication date: June 12, 2003Applicant: Ecolab, Inc.Inventors: Richard O. Ruhr, Mark D. Levitt, Edward H. Richardson, Victor F. Man
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Patent number: 6548471Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: December 20, 2001Date of Patent: April 15, 2003Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, George G. I. Moore
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Patent number: 6548464Abstract: A composition useful as a paint remover, including alkylene carbonate such as propylene carbonate or ethylene carbonate, and an alcohol such as benzyl alcohol. Also, a process for removing paint, comprising: applying a composition containing alkylene carbonate and an alcohol to a painted surface for a time and under conditions effective to reduce adhesion between the top coats and the primer or undercoat of the paint. In another aspect, this paint remover includes dialkyl carbonate and an alcohol, optionally containing a glycol ether. In another aspect, the process includes applying a composition containing dialkyl carbonate and an alcohol. This paint remover may include a thickener, a surfactant, or a corrosion inhibitor.Type: GrantFiled: November 28, 2000Date of Patent: April 15, 2003Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward Chung-Yit Nieh, Susan A. Woodrum, Edward T. Marquis
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Patent number: 6544939Abstract: A silicone dissolving composition includes an organo-acid compound such as sulfonic acid or phosphinic acid, a solvent miscible with the organo-acid and able to swell a silicone, a thickener and a small amount of mineral acid. Silicone films dissolve to a liquefied mass capable of being wiped from a substrate in a matter of minutes. The removal of automotive, electrical, and construction sealants and gaskets is simplified with the use of such a silicone dissolving composition.Type: GrantFiled: November 13, 2000Date of Patent: April 8, 2003Assignee: Permatex, Inc.Inventors: Hans Haas, Marcia Snyder
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Patent number: 6534460Abstract: A pleasant smelling, non-toxic dry composition comprised of sodium bicarbonate embedded in a rubber matrix for removing adhesives from smooth surfaces is described. The composition is prepared by mixing 2 volumes of packed sodium bicarbonate with one volume of rubber cement and allowing the mixture to dry. The dry composition is dispensed from a tube type dispenser. The adhesive is removed by rubbing the dry composition against the adhesive until the smooth surface is clean.Type: GrantFiled: August 18, 2000Date of Patent: March 18, 2003Inventor: Ronald L. Van Meter
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Patent number: 6534461Abstract: The invention relates to a stripping composition which can be used in the construction field, especially for the stripping of external organic coatings, such as exterior waterproof coatings and thin films, and in the yachting field, for the stripping of antifouling coatings, characterized in that it comprises: at least one dibasic ester, at least one dipolar aprotic solvent, at least one inorganic filler, water, at least one cellulose thickener, at least one dispersing agent and activators.Type: GrantFiled: May 29, 2001Date of Patent: March 18, 2003Assignee: ATOFINAInventor: Jean-Pierre Lallier
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Patent number: 6528468Abstract: The present invention relates to a pickling agent for the chemical conversion coating of a heat exchanger which is capable of cleaning the complicated structure comprising fins and tubes of a heat exchanger in preparation for the successful formation of a chemical conversion film, a method of pickling a heat exchanger, a method of treating a heat exchanger comprising said pickling method, and a heat exchanger produced by using said treating method. The present invention provides pickling agent for the chemical conversion coating of a heat exchanger which comprises an acidic aqueous solution containing nitric acid and/or sulfuric acid and at least one metal and/or metal oxoanion salt derived from any metal selected from the group consisting of iron, nickel, cobalt, molybdenum and cerium.Type: GrantFiled: December 1, 2000Date of Patent: March 4, 2003Assignee: Nippon Paint Co., Ltd.Inventors: Masahiko Matsukawa, Kentaro Saito, Toshio Inbe, Kasuyoshi Yamasoe
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Patent number: 6509309Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: March 12, 2002Date of Patent: January 21, 2003Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, George G. I. Moore, John G. Owens
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Patent number: 6506459Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: December 20, 2001Date of Patent: January 14, 2003Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Mark W. Grenfell, George G. I. Moore, John G. Owens
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Publication number: 20030004080Abstract: A long-time stable pickling agent for the removal of an oxide layer on a stainless steel after heat treatment, such as welding, which pickling agent comprises nitric acid and fillers and constitutes of a pickling paste or pickling gel to be coated on the heat treated stainless steel, or of a pickling liquid to be sprayed on the steel. According to the invention, the pickling agent also comprises urea for reduced formation of nitrous fumes when the pickling agent is used.Type: ApplicationFiled: June 26, 2002Publication date: January 2, 2003Inventors: Sven-Eric Lunner, Fredrik Hagg
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Publication number: 20030004078Abstract: The invention relates to a composition and method for cleaning, protecting and restoring surfaces, particularly for vehicles such as automobiles and boats. The composition includes wax, an emulsifier, water, organic solvent and silicone liquid.Type: ApplicationFiled: July 31, 2002Publication date: January 2, 2003Applicant: Pennzoil-Quaker State CompanyInventors: Michael Schmeida, Brian Sokol
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Patent number: 6498132Abstract: A method for treating the surface of a substrate with a surface treatment composition, wherein the surface treatment composition comprises a liquid medium containing a complexing agent as a metal deposition preventive, the complexing agent comprising at least one member selected from Group A complexing agents and at least one member selected from Group B complexing agents as defined hereinafter.Type: GrantFiled: December 28, 2000Date of Patent: December 24, 2002Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Morinaga, Masaya Fujisue
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Patent number: 6494960Abstract: A method for removing an aluminide coating from a substrate includes the steps of contacting the surface of the substrate with at least one stripping composition to degrade the coating. The stripping composition includes an aliphatic or aromatic sulfonic acid, and at least one additive. The coating is then removed.Type: GrantFiled: May 3, 1999Date of Patent: December 17, 2002Assignee: General Electric CompanyInventors: Leo Spitz Macdonald, D. Sangeeta, Mark Alan Rosenzweig
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Publication number: 20020183221Abstract: This invention relates to a method to facilitate the removal of adherent polymeric films from a hard surface occasioned by the evaporation of solvent from compositions containing an anionic acrylates copolymer, the method comprising incorporating a phosphate ester surfactant into the compositions, and washing the film from the surface to which it adheres.Type: ApplicationFiled: February 22, 2002Publication date: December 5, 2002Inventor: Stanley Pohl
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Patent number: 6482270Abstract: A composition useful as a paint remover. The composition may include a carbonate, a dibasic ester and a mono-ester. The composition may also contain an organic sulfur-containing compound such as dimethyl sulfoxide (DMSO), a glycol ether, a ketone, or combination thereof. The composition may be used in a process for removing paint by applying it to a painted surface. The compositions have several important attributes, including low toxicity and high efficacy in removing paint and coatings.Type: GrantFiled: November 1, 2000Date of Patent: November 19, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum, Katty Darragas
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Publication number: 20020160923Abstract: This invention relates to a method to facilitate the removal of adherent polymeric films from a hard surface occasioned by the evaporation of solvent from compositions containing an anionic amphiphilic polymer, the method comprising incorporating a phosphate ester surfactant into the compositions, and washing the film from the surface to which it adheres.Type: ApplicationFiled: February 22, 2002Publication date: October 31, 2002Inventor: Stanley Pohl
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Patent number: 6472357Abstract: An electronic parts cleaning solution comprising a hydroxide, water, metal corrosion inhibitor, and at least one compound represented by the following general formula (I) or (II): HO—((EO)x-(PO)y)z-H (I) wherein, EO represents an oxyethylene group, PO represents an oxypropylene group, x and y represent integers satisfying the relation: x/(x+y)=0.05 to 0.4, and z represents a positive integer, R—[((EO)x-(PO)y)z-H]m (II) wherein, EO, PO, x, y and z are the same as in the general formula (I), R represents a residual group obtained by removing a hydrogen atom on a hydroxyl group of alcohol or amine having a hydroxyl group, or a residual group obtained by removing a hydrogen atom on an amino group of amine, and m represents an integer of 1 or more.Type: GrantFiled: February 2, 2001Date of Patent: October 29, 2002Assignee: Sumitomo Chemical Company, LimitedInventor: Masayuki Takashima
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Patent number: 6468952Abstract: An aqueous composition for plasticizing or softening paint, varnish and similar coatings prior to stripping the coating from a surface includes a combination of the active agents, e.g., triethylphosphate and a co-agent selected from dimethyl adipate, 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate, methyl octanoate and 2-ethyl-l-butanol; as an emulsified hydrophobic phase in which the actives are partitioned between the hydrophobic and aqueous phases. The emulsion is stabilized using a non-ionic water-soluble block copolymer surfactant, being a copolymer of more than one alkylene oxide. The composition may be thickened using rheology control agent. Synthetic smectic clays are particularly suitable. The composition is non-toxic and consists predominantly of water, and yet exhibits effective paint, varnish and lacquer plasticizing/softening.Type: GrantFiled: November 22, 2000Date of Patent: October 22, 2002Assignee: Eco Solutions LimitedInventor: Paul A. Reynolds
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Patent number: 6465405Abstract: The present invention is directed to a paint stripping composition comprising (a) from about 0.5 to about 50% by weight of an aromatic alcohol, such as benzyl alcohol; (b) from about 0.5 to about 20% by weight of malic acid; and (c) from about 15 to about 60% by weight of water. The pH of the composition broadly ranges from about 2 to about 3. The stripping composition of the present invention is free of chlorinated solvents, environmentally safe, and user-friendly. It is non-corrosive or only slightly corrosive to substrates, non-flammable, non-toxic, flow odor, and fully biodegradable. A method of preparing the paint stripping composition is also provided.Type: GrantFiled: August 11, 2000Date of Patent: October 15, 2002Assignee: Napier Environmental Technologies, Inc.Inventor: Sergio Vitomir
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Publication number: 20020144718Abstract: Paint residues may be removed from spraying equipment and the like by flushing with aqueous compositions containing alkoxylated aromatic alcohols wherein the aromatic ring moieties of such alcohols do not bear any alkyl substituent containing more than 4 carbon atoms. Preferably, the aqueous compositions also contain an alkanolamine or other base. The alkoxylated aromatic alcohols contain an average of at least about 2 oxyalkylene moieties (preferably, oxyethylene moieties) per molecule.Type: ApplicationFiled: December 20, 2001Publication date: October 10, 2002Inventor: Neil R. Wilson
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Patent number: 6462011Abstract: This application discloses a composition for and a method of using the composition to disperse hydrocarbon based components into a liquid carrier. The composition is comprised of a lower alkyl ester of a fixed oil, such as a modified vegetable oil, in combination with at least one other compound which enhances the ability of the ester to form an aqueous emulsion which can separate and which can alter the wetting character of the ester. The method comprises contacting a material comprised of hydrocarbon based components with an effective amount of composition for a time and a temperature sufficient to disperse the material into a liquid carrier.Type: GrantFiled: January 25, 2000Date of Patent: October 8, 2002Assignee: United Laboratories International, LLCInventors: Bevan C. Collins, Larry D. Martin
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Patent number: 6454870Abstract: A chromium oxide coating is removed from a surface of an article by cleaning the article in an alkaline degreasing/rust removal solution at a degreasing/rust removal temperature of from about 180° F. to about 200° F., scale conditioning the article in an alkaline permanganate conditioning solution at a scale-conditioning temperature of from about 160° F. to about 200° F., and contacting the article to an acidic stripping solution comprising hydrochloric acid and an etching inhibitor at a stripping temperature of from about 130° F. to about 140° F.Type: GrantFiled: November 26, 2001Date of Patent: September 24, 2002Assignee: General Electric Co.Inventor: William Clarke Brooks
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Patent number: 6428628Abstract: A paint-removing method comprises the steps of putting dimethyl sulfoxide into a tank, raising the dimethyl sulfoxide at a temperature of approximately 35° C. to 189° C. in the tank; and soaking a member to be removed of paint into the dimethyl sulfoxide in the tank. The dimethyl sulfoxide is applying or blowing to a member to be removed of paint.Type: GrantFiled: August 22, 2000Date of Patent: August 6, 2002Inventor: Masao Umemoto
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Patent number: 6419755Abstract: A chemical delacquering composition, process and system for delacquering substrates such as aluminum scrap in which an aqueous solution containing at least one short-chain organic acid, preferably a mixture of two short-chain organic acids, and optional components such as surfactants, are contacted onto the substrate(s) with application of heat and agitation. The invention embraces the use of one or more organic acids (carboxylic acids) having a total of 2-12 carbons, preferably 3-8 carbons. Concentration of organic acid by weight ranges from about 0.5-8% per at least one organic acid, or preferably 2-4% for each organic acid component assuming two organic acid components are present. In the preferred embodiment of the invention, about 2-4% each of citric and lactic acids are present in the delacquering composition. Processing temperatures range from 160-212° F., preferably 180-212° F., and most preferably 185-212° F.Type: GrantFiled: December 30, 1999Date of Patent: July 16, 2002Assignee: Alcoa Inc.Inventors: Doris Arruda, Kathleen M. Tomaswick
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Patent number: 6420327Abstract: Coating remover compositions comprising an alkylene carbonate, hydrogen peroxide, water, a first alcohol, a second alcohol, and, optionally, pine oil that exhibit low toxicity. Further, a method of removing a coating from a surface. The method involves contacting a composition comprising an alkylene carbonate, hydrogen peroxide, water, a first alcohol, a second alcohol, and optionally, pine oil to a coated surface, and allowing the composition to contact the coated surface for a period of time, and under conditions effective to cause blistering of the coating. The compositions and method of the present invention are particularly suited for use with varnishes.Type: GrantFiled: August 9, 2000Date of Patent: July 16, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum, Howard P. Klein
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Patent number: 6417149Abstract: A paint stripping composition comprising methyl benzoate and formic acid, as well as a method for using the foregoing composition in stripping paint from a substrate, are disclosed. The paint stripping composition may optionally also comprise thickeners, surfactants, and corrosion inhibitors. The composition and method are useful in stripping a variety of paints and similar organic coatings from both metallic and non-metallic substrates. Most preferably, the paint stripping composition does not comprise n-methyl-2-pyrrolidone.Type: GrantFiled: September 7, 2001Date of Patent: July 9, 2002Inventor: Gerald Wojcik
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Patent number: 6380149Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: May 29, 2001Date of Patent: April 30, 2002Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, George G. I. Moore, John G. Owens
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Patent number: 6369009Abstract: This invention concerns a composition useful as a paint remover, comprising: alkylene carbonate such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water, and optionally an alcohol such as benzyl alcohol. In another broad respect, this invention concerns a process for removing paint, comprising: applying a composition containing alkylene carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. In another broad respect, this invention is a composition useful as a paint remover, comprising: dialkyl carbonate, hydrogen peroxide, and water, optionally containing an alcohol, optionally containing a glycol ether. In another broad respect, this invention is a process for removing paint, comprising: applying a composition containing dialkyl carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint.Type: GrantFiled: November 28, 2000Date of Patent: April 9, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum
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Patent number: 6369010Abstract: The present invention is a method and composition for preventing the deposition of contaminants from resinous pulp and/or recycled pulp in the press section of a pulp and paper process. The composition of the invention includes a cleaning solvent comprising a blend of aromatic hydrocarbons containing between nine and eleven carbon atoms and a surfactant comprising an alcohol ethoxylate. The composition of the invention can be applied to the felts in the press felt section of a pulp and paper process to break down and loosen deposited contaminants and the contaminants can be removed thereby preventing the need for batch cleaning and downtime in the press felt section.Type: GrantFiled: December 1, 1999Date of Patent: April 9, 2002Assignee: Vinings Industries, Inc.Inventors: David D. Dreisbach, Jeffrey N. Champine
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Publication number: 20020035050Abstract: This invention provides an improved composition and process for pretreatment of aluminum prior to electroplating. The invention is an aqueous composition comprised of an acid, an oxidizing agent, and, optionally, a halogenated compound.Type: ApplicationFiled: January 30, 2001Publication date: March 21, 2002Inventors: Maulik Dhanesh Mehta, Paul Andrew Butkovsky
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Patent number: 6358901Abstract: The invention concerns a composition for stripping coatings for example of paints. Said composition comprises at least an aromatic ether containing an alkoxy group with at least two carbon atoms and at least an aprotic polar solvent.Type: GrantFiled: July 19, 2000Date of Patent: March 19, 2002Assignee: Rhodia ChimieInventors: Jean-Luc Joye, Jean-Claude Galliot
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Patent number: 6348107Abstract: A paint stripper for use by immersion of a painted substrate in a bath of the composition or application in place has two phases, one aqueous and the other of partially water soluble organic solvent. The aqueous phase is saturated with organic solvent. The organic solvent is preferably benzyl alcohol, dibasic ester or ethyl-e-ethoxypropionate, The total amount of organic solvent in the bath is suitably in the range 2 to 20%. The stripper may be acid or alkali activated. The application stripper is thickened to avoid separation during storage.Type: GrantFiled: April 19, 1999Date of Patent: February 19, 2002Assignee: Chemetall PLCInventors: Colin Alfred Whitton, Joanna May Braley, Angela Mary Lawlor
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Patent number: 6339053Abstract: An aqueous composition for softening or removing organic coatings comprises: (a) an effective amount of a mixture of (a1) at least one non-toxic compound of formula (I). Wherein R, R1 and R2 which may be the same or different, represent lower alkyl, phenyl or lower alkyl-phenyl groups (e.g. triethlyphosphate) and (a2) at least one non-toxic lower alkyl ester of a C2-20 carboxylic acid or at least one non-toxic C4-12 alkanol (e.g. diethyl succinate, diethyl succinate, diethyl adipate. 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate or methyl octanoate)(b) an effective amount of at least one surfactant to allow the composition to exist as a stable emulsion. The surfactant(s) being selected nonionic water-soluble block compolymers of more than one alkylene oxide (e.g.Type: GrantFiled: November 16, 2000Date of Patent: January 15, 2002Assignee: Eco Solutions LimitedInventors: Ivor M. Chivers, Paul A. Reynolds
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Publication number: 20020000239Abstract: A stripping composition and a method of using the stripping composition to remove cured resins such as elastomeric silicone adhesive deposits from ceramic and metal surfaces of electronic modules to provide reworkability options in assembly processes including diagnostic parts, parts replacement and recovery of substrates from test vehicles is provided. The stripping compositions comprise a base preferably an organic base such as a quaternary ammonium hydroxide, a surfactant and a high boiling environmentally and chemically safe solvent such as di- or tri-propylene glycol alkyl ether. In another stripping composition, the base is used in combination with a mixture of N-alkyl pyrrolidone components, preferably an N-alkyl pyrrolidone and a N-cycloalkyl pyrrolidone. The stripping compositions are used to contact an electronic module having a cured resin such as a silicone adhesive residue deposit on the module surface to dissolve, remove or strip the deposit.Type: ApplicationFiled: September 27, 1999Publication date: January 3, 2002Inventors: KRISHNA G. SACHDEV, UMAR M. AHMAD, FAREED Y. AUDI, DANIEL G. BERGER, JOHN U. KNICKERBOCKER, CHON C. LEI
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Patent number: 6319884Abstract: Non-aqueous cleaning compositions capable of removing cured polyimides and other polymers from a metal circuitry containing substrate such as a semiconductor device for rework and other purposes without any significant adverse affect on the circuitry are provided consisting essentially of alkanolamines, preferably monoethanolamine or monoethanolamine-diethanolamine mixtures and optionally with a solvent such as NMP in an amount less than about 50% by weight. A method is also provided for removing polyimide coatings and other polymers from semiconductor devices using the cleaning compositions of the invention.Type: GrantFiled: June 16, 1998Date of Patent: November 20, 2001Assignee: International Business Machines CorporationInventors: Marilyn R. Leduc, Harold G. Linde, Gary P. Viens
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Patent number: 6303552Abstract: The present invention is directed to an aerosol composition comprising (A) a paint stripper composition comprising (i) from about 20 to about 50% by weight of an aromatic alcohol, such as benzyl alcohol, (ii) from about 5 to about 50% by weight of an accelerator, (iii) from about 0.5 to about 5.0% by weight of water, based upon 100% weight of total paint stripper composition; and (B) a propellant. A method of preparing the aerosol composition is also provided.Type: GrantFiled: August 4, 1999Date of Patent: October 16, 2001Assignee: Napier International Technologies, Inc.Inventor: Sergio Vitomir
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Patent number: 6297308Abstract: Described are chemical compositions comprising a fluorinated solvent and a nonionic, poly-fluoroalkyl, hydroxy-substituted surfactant.Type: GrantFiled: October 7, 1999Date of Patent: October 2, 2001Assignee: 3M Innovative Properties CompanyInventors: Chetan P. Jariwala, Henry C. Chang, David S. Hill
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Patent number: 6296718Abstract: A method of stripping cured paint from reject painted production parts, aluminum and galvanized safe, comprising: a) adding a stripping composition to a strip tank, said stripping composition consisting an alkanolamine, a fatty acid and a surfactant; b) immersing said reject painted part in said strip tank containing said stripping composition; and c) heating said stripping composition to 300 degrees F. for approximately 1-hour, wherein cured paint is removed from said reject painted part with no attack on the base metal substrate.Type: GrantFiled: January 26, 2001Date of Patent: October 2, 2001Inventor: Samuel Lee Miles
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Patent number: 6291417Abstract: A process for removing contaminants from the surface of a substrate comprises contacting the substrate with a cleaning composition comprising at least one mono-, di-, or trialkoxy-substituted perfluoroalkane, perfluorocycloalkane, perfluorocycloalkyl-containing perfluoroalkane, or perfluorocycloalkylene-containing perfluoroalkane compound, the compound optionally containing additional catenary heteroatoms. The compounds exhibit good solvency properties while being environmentally acceptable.Type: GrantFiled: March 15, 1999Date of Patent: September 18, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, George G. I. Moore, John G. Owens
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Patent number: 6239090Abstract: A thickened composition and process useful for removing paint, comprising: a carbonate such as propylene carbonate or ethylene carbonate, a thickener such as polyvinyl pyrrolidone (PVP), hydrogen peroxide and water. The composition may include additional cosolvents such as glycol ethers and alcohols such as benzyl alcohol, and/or dibasic ester (DBE).Type: GrantFiled: December 10, 1999Date of Patent: May 29, 2001Assignee: Huntsman Petrochemical CorporationInventors: Edward T. Marquis, Robert E. Baldwin, James R. Machac, Jr., Katty Darragas, Susan Aileen Woodrum
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Patent number: 6239096Abstract: A powdered abrasive cleanser that exhibits superior soil removal properties and surface safety is provided. The cleanser includes a surfactant, an optional source of active chlorine, a borax pentahydrate compound that is preferably sodium tetraborate pentahydrate, and optionally an alkaline detergent builder and/or calcium carbonate.Type: GrantFiled: July 1, 1999Date of Patent: May 29, 2001Assignee: The Clorox CompanyInventors: Robert L. Blum, Denise A. Garner, Carl M. Kling
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Patent number: 6231678Abstract: A chemical delacquering composition, process and system for delacquering substrates such as aluminum scrap in which an aqueous solution containing at least one short-chain organic acid, preferably a mixture of two short-chain organic acids, and optional components such as surfactants, are contacted onto the substrate(s) with application of heat and agitation. The invention embraces the use of one or more organic acids (carboxylic acids) having a total of 2-12 carbons, preferably 3-8 carbons. Concentration of organic acid by weight ranges from about 0.5-8% per at least one organic acid, or preferably 2-4% for each organic acid component assuming two organic acid components are present. In the preferred embodiment of the invention, about 2-4% each of citric and lactic acids are present in the delacquering composition. Processing temperatures range from 160-212° F., preferably 180-212° F., and most preferably 185-212° F.Type: GrantFiled: October 19, 2000Date of Patent: May 15, 2001Assignee: Alcoa Inc.Inventors: Doris Arruda, Kathleen M. Tomaswick
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Patent number: 6228179Abstract: A surface treatment composition containing a complexing agent as a metal deposition preventive in a liquid medium, in which the complexing agent is an ethylenediaminephenol derivative of the following general formula (1) or its salt: wherein X1 and X2 are hydroxyl groups; Y1 to Y8 are respectively independently a hydrogen atom, a hydroxyl group, a halogen atom, a carboxyl group, a phosphonic acid group, a sulfonic acid group, a carbonyl group, a nitro group, a nitroso group, an amino group, an imino group, a nitrilo group, a nitrile group, a thiocyanate group, a hydroxyamino group, a hydroxyimino group, or an alkyl or alkoxy group which may have a substituent, provided that at least one of Y1 to Y8 is not a hydrogen atom; Z1 to Z4 are respectively independently a hydrogen atom, a carboxyl group or a sulfonic acid group; and R1 to R4 are respectively independently a hydrogen atom or an alkyl group which may have a substituent.Type: GrantFiled: March 10, 2000Date of Patent: May 8, 2001Assignee: Mitsubishi Chemical CorporationInventor: Hitoshi Morinaga
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Patent number: 6228823Abstract: A method for treating the surface of a substrate with a surface treatment composition, wherein the surface treatment composition comprises a liquid medium containing a complexing agent as a metal deposition preventive, the complexing agent comprising at least one member selected from Group A complexing agents and at least one member selected from Group B complexing agents defined hereinafter.Type: GrantFiled: December 22, 1998Date of Patent: May 8, 2001Assignee: Mitsubishi Chemical CorporationInventors: Hitoshi Morinaga, Masaya Fujisue
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Patent number: 6200940Abstract: The present invention is directed to apaint stripping composition comprising (a) from about 0.5 to about 50% by weight of an aromatic alcohol, such as benzyl alcohol; (b) from about 0.5 to about 20% by weight of malic acid; and (c) from about 15 to about 60% by weight of water. The pH of the composition broadly ranges from about 2 to about 3. The stripping composition of the present invention is free of chlorinated solvents, environmentally safe, and user-friendly. It is non-corrosive or only slightly corrosive to substrates, non-flammable, non-toxic, low odor, and fully biodegradable. A method of preparing the paint stripping composition is also provided.Type: GrantFiled: July 19, 1999Date of Patent: March 13, 2001Assignee: Napier International Technologies, Inc.Inventor: Sergio Vitomir
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Patent number: 6191086Abstract: Non-corrosive cleaning compositions that are aqueous based and useful for removing photoresist, plasma etch and CMP residues from a substrate. One preferred cleaning composition comprises: (i) a hydroxylamine or a hydroxylamine salt compound; (ii) at least one fluorine-containing compound; and (iii) water. Another cleaning composition comprises: (i) a compound selected from the group consisting of: an amine, a quatenary ammonium hydroxide, and ammonium hydroxide; (ii) at least one fluorine-containing compound; and (iii) water.Type: GrantFiled: December 15, 1999Date of Patent: February 20, 2001Assignee: Arch Specialty Chemicals, Inc.Inventors: Vincent G. Leon, Kenji Honda, Eugene F. Rothgery
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Patent number: 6187736Abstract: A solvent mixture comprising an alcohol, an aromatic hydrocarbon or an organic compound containing carboxyl but not hydroxyl moieties, and optionally and preferably a non-aromatic hydrocarbon or halohydrocarbon is particularly effective in removing incompletely cured residues of a variety of sealing compounds from the surfaces of automobile bodies, without damaging intermediate or final finish coatings for the automobile bodies. The solvent mixture may advantageously be absorbed in a wiping cloth for convenient use.Type: GrantFiled: March 11, 1999Date of Patent: February 13, 2001Assignee: Henkel CorporationInventor: Chester P. Jarema
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Patent number: 6187108Abstract: Process useful to clean and remove uncured resins. The resins to be treaded include epoxy, polyester (fiberglass) and polyurethane foam. The compositions include alkylene carbonate, including propylene and ethylene carbonate.Type: GrantFiled: November 4, 1999Date of Patent: February 13, 2001Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis