Free Organic Or Inorganic Acid Component Patents (Class 510/253)
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Patent number: 6767874Abstract: A cleaning composition for removing organic deposits from hard to reach surfaces. In its basic embodiment, the cleaning composition comprises: a) a water miscible solvent; b) an inorganic salt in crystal form; and c) water. The inorganic salt in crystal form comprises from about 30 to about 70% weight of the total composition.Type: GrantFiled: August 31, 2001Date of Patent: July 27, 2004Inventor: Gustavo M. Gonzalez
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Patent number: 6699825Abstract: A low residue antimicrobial solution containing about 0.2 percent by weight of an acid selected from the group consisting of organocarboxylic acids; and about 2 percent of a volatile solvent selected from the group consisting of n-butanol, benzyl alcohol, phenylethanol, and sparingly soluble glycol ether solvents is disclosed. Preferred compositions may also contain about 0.1 percent anionic sulfated or sulfonated surfactants and about 5 percent co-solvent selected from the group consisting of completely water soluble monoprotic aliphatic alcohols and glycol ethers. The solution may be also employed as a low-residue cleaner for soiled hard surfaces.Type: GrantFiled: January 12, 2001Date of Patent: March 2, 2004Assignee: S.C. Johnson & Son, Inc.Inventors: Wayne M. Rees, Debra S. Hilgers
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Patent number: 6645926Abstract: The present invention relates to a maskant system for use with a fluoride cleaning system. The maskant system comprises a parting compound applied to a surface which requires protection and a chromium rich maskant for substantially preventing intergranular attack and which reduces a depletion zone. The parting compound contains colloidal silica, de-ionized water, fused alumina grains, and alumina powder. The maskant is comprised of chromium powder mixed with a binder, a wetting agent, a thickening agent, and water. The maskant system may be used to clean components formed from nickel-based or cobalt-based alloys using a fluoride cleaning system and has particular utility when components formed from single crystal nickel based alloys are cleaned using a fluoride cleaning system.Type: GrantFiled: November 28, 2001Date of Patent: November 11, 2003Assignee: United Technologies CorporationInventors: Beth Kwiatkowski Abriles, Bryan W. Manis, Murali N. Madhava
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Patent number: 6630434Abstract: A low viscosity aqueous cleaning composition provides increasing viscosity upon dilution which provides a high viscosity diluted cleaning composition having solvents compatible with the rod micelle thickener and the cleaning system that clings for an extended period of time in a thickened form containing cleaning system ingredients that can penetrate and remove hard baked-on soils on vertical surfaces in cleaning units. The composition contains active cleaning ingredients (acid, alkaline and enzyme) that, in combination with thickening systems, provide the useful properties. The thickened materials can be applied on cold or hot surfaces and can successfully penetrate, soften and remove baked-on food soil on a variety of surfaces including oven walls, doors and grills, baking dishes, utensils, etc.Type: GrantFiled: May 21, 2001Date of Patent: October 7, 2003Assignee: Ecolab Inc.Inventors: Michael E. Besse, Richard O. Ruhr, Gerald K. Wichmann, Timothy A. Gutzmann
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Patent number: 6613728Abstract: A method of providing long-lasting disinfection to a hard surface, said method comprising the step of contacting said hard surface with a liquid disinfecting solution having a pH of from 2 to 6 and having low volatility, said liquid disinfecting solution comprising peroxygen bleach and an antimicrobial active selected from the group consisting of thymol, eugenol, menthol, geraniol, vertenone, eucalyptol, pinocarvone, cedrol, anethol, carvacrol, hinokitiol, berberine, ferulic acid, cinnamic acid, methyl salicylic acid, methyl salicylate, terpineol, limonene and mixtures thereof, and an anti-microbial compound having a vapor pressure of less than 0.1 mmHg when measured at 20° C., wherein said anti-microbial compound is selected from the group consisting of citric acid, benzoic acid, benzophenone, and mixtures thereof.Type: GrantFiled: December 8, 2000Date of Patent: September 2, 2003Assignee: The Procter & Gamble CompanyInventors: Giuseppe Sirianni, Marina Trani
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Publication number: 20030162677Abstract: A descaling composition for use in removing scale deposited on a member made of titanium or a titanium alloy, the descaling composition containing a hydroxycarboxylic acid, a sulfamic acid and ammonium sulfate as effective components and effectively inhibiting titanium ions from dissolving out.Type: ApplicationFiled: March 18, 2003Publication date: August 28, 2003Applicant: SEIWA PRO CO., LTD.Inventor: Takeshi Sugimoto
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Patent number: 6540943Abstract: The corrosion of metal equipment which is cleaned with an inorganic acid is inhibited by treating the equipment with a corrosion inhibitor composition containing at least one quaternary ammonium compound, a sulfur-containing compound and a nonionic surfactant in a solvent.Type: GrantFiled: April 3, 2000Date of Patent: April 1, 2003Assignee: Ondeo Nadco CompanyInventors: Duane S. Treybig, Dennis A. Williams
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Publication number: 20030050207Abstract: A descaling composition for use in removing scale deposited on a member made of titanium or a titanium alloy, the descaling composition containing a hydroxycarboxylic acid, a sulfamic acid and ammonium sulfate as effective components and effectively inhibiting titanium ions from dissolving out.Type: ApplicationFiled: July 23, 2002Publication date: March 13, 2003Inventor: Takeshi Sugimoto
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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: 6525011Abstract: Methods and acidizing compositions for reducing the corrosion of the metal surfaces of tubular goods and the like and reducing the precipitation of metal sulfide from the acidizing compositions are provided. The methods basically comprise the steps of combining an aldol-amine adduct with an aqueous acid solution to preferentially react with sulfide ions subsequently dissolved by the aqueous acid solution and thereby prevent subsequently dissolved metal ions from reacting therewith and precipitating, and then introducing the aqueous acid solution containing the aldol-amine adduct into a well or other location to be acidized.Type: GrantFiled: September 18, 2001Date of Patent: February 25, 2003Assignee: Halliburton Energy Services, Inc.Inventor: Michael M. Brezinski
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Patent number: 6521575Abstract: A treatment solution (2) containing fluoride is added to a cleaning solution (1) drained from a cleaning tank (11). Fluoride is allowed to react with fluorosilicic acid in the cleaning solution to settle a precipitate (4) containing fluorosilicate, and the precipitate (4) is removed. The cleaning solution regenerated in a regeneration apparatus (10) is again returned to the cleaning tank (11), and used as a cleaning solution for a CRT panel (20).Type: GrantFiled: April 6, 2000Date of Patent: February 18, 2003Assignees: Matsushita Electric Industrial Co., Ltd., Kaken Co.Inventors: Kenji Fujiwara, Hisanori Yatoh, Masao Gotoh, Juichi Sasada, Masanori Yamauchi, Katsuyoshi Tatenuma, Osamu Arai, Takuji Taguchi
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Patent number: 6498137Abstract: An aerosol aqueous cleaning composition having: an effective mineral dissolving amount of an organic acid of at least 5% by weight of the cleaning compositions; an effective amount of a spore forming microbial composition; an effective cleaning amount of a blend of wetting agents, the first wetting agent having a hydrophobic/lipophobic number (HLB) of about 10 and higher and a second wetting agent having an HLB number of about 5 or less; an effective amount of a thickening agent; an effective amount of a propellant and water.Type: GrantFiled: March 19, 2002Date of Patent: December 24, 2002Assignee: Spartan Chemical Company, Inc.Inventors: William J. Schalitz, Jason J. Welch, Ronald Thomas Cook
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Patent number: 6489281Abstract: A cleaning composition is provided according to the invention. The cleaning composition includes a product of mixing an acid component, a source of phosphoric acid component, and an oxidant component. The molar ratio of oxidant component to phosphoric acid component is preferably between about 2:1 and about 1:2, and the molar ratio of oxidant component to acid component is preferably between about 1:3 and about 1:5. A method of cleaning an aluminum surface is provided. The method includes a step of applying the cleaning composition to an aluminum surface, and rinsing the cleaning composition from the aluminum surface.Type: GrantFiled: September 12, 2000Date of Patent: December 3, 2002Assignee: Ecolab Inc.Inventors: Kim R. Smith, Robert D. P. Hei, Michael E. Besse, Jerry D. Hoyt
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Patent number: 6486104Abstract: A portable wipe product for use in cleaning objects, such as pacifiers, bottles, teething objects, and cups that are to be placed in a child's mouth. The wipes are dispensed from a portable dispenser. The wipes are covered with an aqueous mixture that, in its basic form, includes purified water, one of an emulsifier and a surfactant, a moisture preserving agent, a chelator, a preservative, and an acidulant. Flavoring and an anti-oxidant may also be added.Type: GrantFiled: December 11, 2000Date of Patent: November 26, 2002Inventors: William R. Patzer, Victoria Patzer, Kenneth Coleman
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Patent number: 6472358Abstract: A sanitizing composition comprising at least one aliphatic short chain antimicrobially effective C5 to C14 fatty acid or mixture thereof, at least one carboxylic weak acid and a strong mineral acid which may be nitric or a mixture of nitric and phosphoric acids.Type: GrantFiled: November 15, 2001Date of Patent: October 29, 2002Assignee: EcoLab Inc.Inventors: Francis Lawrence Richter, Duane Joseph Reinhardt, Richard R. Staub, Teresa C. Podtburg
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Publication number: 20020137650Abstract: A cleaning method is provided for an ultrapure water supply system having an ultrapure water production apparatus connected to a point of use of ultrapure water via a passage. In the cleaning method, a basic solution, for example, is circulated through the system to change the surface potential of fine particles in the system from an opposite to the same polarity as that of elements constituting the system, thereby facilitating the removal of the fine particles, and the fine particles are then discharged from the system to outside together with the basic solution. The cleaning method has excellent cleaning capability and also makes it possible to shorten the rinsing time required for removing the residual constituent of the cleaning solution.Type: ApplicationFiled: April 8, 2002Publication date: September 26, 2002Inventor: Masatake Okumura
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Publication number: 20020094941Abstract: A composition and method for cleaning surfaces having deposits, such as drink water tanks, supply water wells, water filter systems, and distributor water lines. The composition contains in combination a cleaning solution and a disinfectant, such as hydrogen peroxide or peracidic acid. The cleaning solution can includes hydrochloric acid and/or phosphoric acid in combination with inhibitors, dyes and water. The composition is applied to deposits which have formed on these surfaces.Type: ApplicationFiled: October 29, 2001Publication date: July 18, 2002Inventors: Jeffrey Schulhoff, Christian Schaal
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Patent number: 6420329Abstract: A range of novel biodegradable aqueous acid cleaning systems for removing limescale from surfaces, especially stainless steel and porcelain surfaces, wherein said system comprises a biodegradable aqueous acid system, said system having a pH of less than 7.0, said system comprising at least one of the following acids: i) iminodiacetic acid; ii) aspartic acid; iii) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of iminodiacetic acid; iv) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of aspartic acid; and v) C2-C10 polycarboxylic acids, said polycarboxylic acids containing a heteroatom in the main chain thereof, said heteroatom being selected from S, O and N; said system optionally comprising mixtures of said acids (i) to (v). The composition preferably comprises a surfactant to optimize the performance of said acid. Additional optional ingredients are selected from thickeners and co-builders and enzyme mixtures.Type: GrantFiled: July 3, 1997Date of Patent: July 16, 2002Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Grace Abamba, Robert Kinsley, Timothy I. Moodycliffe, Richard P. Woodbury
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Patent number: 6395185Abstract: The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form: (I) 50-80% by weight of one or more weak acids; (II) 2-50% by weight of one or more strong acids; (III) 0-30% by weight of one or more monoethylenically unsaturated C4-C8 dicarboxylic acids; and (IV) 0-30% by weight of one or more monomethylenically unsaturated monomers polymerizable with (I), (II) and (III); wherein the total of monomers (I), (II), (III), and (IV) equals 100% by weight of copolymer. The invention is particularly suited to the inhibition of tripolyphosphate and pyrophosphate scales which occur as a result of using low phosphate (STPP) containing detergent formulations.Type: GrantFiled: July 10, 2000Date of Patent: May 28, 2002Assignee: Rohm and Haas CompanyInventors: Francois Gauthier, Jan Shulman, Barry Weinstein, Andrea Keenan, Yves Duccini
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Patent number: 6387874Abstract: Described is an aqueous cleaning composition comprising: an effective mineral dissolving amount of an organic acid of at least 5% by weight of the cleaning compositions; an effective amount of a spore forming microbial composition; an effective cleaning amount of a blend of wetting agents, the first wetting agent having a hydrophobic/lipophobic number (HLB) of about 10 and higher and a second wetting agent having an HLB number of about 5 or less; an effective amount of a thickening agent and water. The composition is also available in powder form without the thickening agent.Type: GrantFiled: June 27, 2001Date of Patent: May 14, 2002Assignee: Spartan Chemical Company, Inc.Inventors: William John Schalitz, Jason J. Welch, Ronald Thomas Cook
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Publication number: 20020032141Abstract: A system and method to clean and disinfect hard surfaces such as plaster, drywall, concrete, linoleum, counter tops, wood, metal, tile and the like is disclosed. The system and method use electrolyzed acidic water produced by an electrolysis process using a standard electrolyte solution of water and an electrolyte, wherein the electrolyte includes sodium chloride (NaCl) at a concentration between about 1% and 50%. In a preferred embodiment about a 20% concentration of sodium chloride is used. The electrolyzed acidic water produced by this method is effective in cleaning and disinfecting hard surfaces.Type: ApplicationFiled: September 5, 2001Publication date: March 14, 2002Inventor: Gene Harkins
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Patent number: 6355605Abstract: A cleaning composition and method are provided for removing iron stains and scale from the external surfaces of duck decoys. An illustrative composition contains hydrochloric acid, stannous chloride, ammonium bifluoride, and water. The compositions are applied to the duck decoys with a pressurized sprayer to discolor and dislodge the stain and scale and thereafter the decoys are water rinsed with a garden hose or the like to remove the dislodged material.Type: GrantFiled: July 3, 2001Date of Patent: March 12, 2002Inventors: David L. Weller, Charles C. Hager, Jr.
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Patent number: 6352967Abstract: A composition for treating a mineral acid using with a blend of sodium thiosulfate, sodium sulfite and trisodium phosphate. This formulation enhances the corrosion properties of a mineral acid to produce a superior acid reaction when measured in terms of corrosiveness or in terms of the time required to react with a chemical base or alkaline compound.Type: GrantFiled: July 19, 1999Date of Patent: March 5, 2002Inventor: David W. Irwin
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Patent number: 6348440Abstract: Methods and compositions for controlling corrosion of high strength steels in the presence of a cleaning solution for removing iron oxide scale from metal surfaces. A benzotriazole or benzimidazole compound is added to a combination of ethoxylated mercaptan and/or oxidized ethoxylated mercaptan and 1-hydroxyethylidene-1,1-diphosphonic acid. The composition is added to an aqueous system, such as a steam generating system, to remove scale from the metal surfaces.Type: GrantFiled: August 2, 2000Date of Patent: February 19, 2002Assignee: BetzDearborn Inc.Inventors: Donald A. Meskers, Jr., Roger John Arthur Tippett
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Patent number: 6344090Abstract: An inhibitor especially useful for aqueous solutions being used at high temperatures to remove scale from boiler tubes and the like contains (1) amines including a substituent group with an abietyl nucleus, (2) organic compounds or polymers that contain at least 2—OH moieties per molecule and at least 0.4 —OH moieties per carbon atom, (3) organic molecules that contain a carbon-sulfur bond, and (4) surfactant.Type: GrantFiled: September 20, 1999Date of Patent: February 5, 2002Assignee: Henkel CorporationInventor: William G Johnston
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Patent number: 6331513Abstract: A scale dissolver composition and method for using the composition is provided. Broadly, the dissolver compositions are formed by adding a base such as ammonium hydroxide to a mixture comprising a salt of a chelating agent, a carbonate, and a component selected from the group consisting of organophosphorus compounds, carboxylic acids, and mixtures thereof. The preferred organophosphorus compound is aminotristmethylidine diphosphonic acid while the preferred chelating agent salt is EDTA tetrasodium salt. In use, the dissolver composition is preferably heated to a temperature of from about 100-170° F. and then contacted with the target scale. The compositions are particularly useful for removing barium sulfate and calcium sulfate scales from gas and oil well and pipeline equipment in an efficient and cost-effective manner.Type: GrantFiled: April 28, 1999Date of Patent: December 18, 2001Assignee: Jacam Chemicals L.L.C.Inventors: Gene H. Zaid, Beth Ann Wolf
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Patent number: 6310021Abstract: A range of novel biodegradable aqueous acid cleaning systems for removing limescale from surfaces, especially stainless steel and porcelain surfaces, wherein said system comprises a biodegradable aqueous acid system, said system having a pH of less than 7.0, said system comprising at least one of the following acids: i) iminodiacetic acid; ii) aspartic acid; iii) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of iminodiacetic acid; iv) derivatives selected from N-alkyl, N-alkylaryl and N-cycloaliphatic derivatives of aspartic acid; and v) C2-C10 polycarboxylic acids, said polycarboxylic acids containing a heteroatom in the main chain thereof, said heteroatom being selected from S, O and N; said system optionally comprising mixtures of said acids (i) to (v). The composition preferably comprises a surfactant to optimize the performance of said acid. Additional optional ingredients are selected from thickeners and co-builders and enzyme mixtures.Type: GrantFiled: October 29, 1998Date of Patent: October 30, 2001Assignee: S. C. Johnson & Son, Inc.Inventors: Ian C. Callaghan, Grace Abamba, Robert Kinsley, Timothy I. Moodycliffe, Richard P. Woodbury
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Patent number: 6310024Abstract: Disclosed in the present application is a composition that is useful for rust and/or corrosion removal that contains a reducing agent, a chelating agent, a surfactant, and a dispersant. Disclosed also are processes for using this composition in aqueous systems and metal surface treatment.Type: GrantFiled: March 24, 2000Date of Patent: October 30, 2001Assignee: Calgon CorporationInventors: Jasbir S. Gill, Monica A. Yorke
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Patent number: 6284056Abstract: A composition useful for removal of organic deposits from a ceramic, glass, plastic, or metal substrate, and a method of use thereof. In a preferred embodiment, the invention pertains to a composition for cleaning an organically fouled smoking apparatus such as a pipe, a cigarette holder, or a water pipe, and to a process whereby the smoking apparatus is cleaned and disinfected.Type: GrantFiled: August 11, 1999Date of Patent: September 4, 2001Inventor: Gustavo M. Gonzalez
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Patent number: 6248705Abstract: Stable, perfumed, highly acidic liquid compositions are disclosed which comprise a source of active oxygen, a surfactant and a cyclic terpene/sesquiterpene compound (e.g. eucalyptol). Said compositions are particularly suitable to clean hard surfaces like toilet bowls.Type: GrantFiled: July 13, 1998Date of Patent: June 19, 2001Assignee: The Procter & Gamble CompanyInventors: Sergio Cardola, Lucio Pieroni, Raffaele Scoccianti
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Patent number: 6245157Abstract: The present invention relates to cleaning compositions which, as powder or as aqueous formulation, comprise sodium bicarbonate and, as dispersants, polyaspartic acids and/or salts thereof, to the use of these cleaning compositions for the abrasive cleaning of hard surfaces, and also to a method of cleaning surfaces contaminated with deposits using these cleaning compositions.Type: GrantFiled: September 14, 1999Date of Patent: June 12, 2001Assignee: Bayer AktiengesellschaftInventors: Manfred Gerlach, Bernhard Lehmann, Hartwig Wendt, Herbert Emde, Urban Recht
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Patent number: 6218349Abstract: The present invention provides for a composition suitable for removing proteinaceous material comprising water, an emulsifier, a chelating agent, one or more mineral acids, and a surfactant; wherein: the emulsifier is a polyether nonionic emulsifier or an amine oxide; the chelating agent is an alkylaminophosphonic acid, a hydroxyalkylphosphonic acid, or an alkylphosphonic acid carboxylic acid; the one or more mineral acids are present in an mount such that the pH of the composition is less than about 4.Type: GrantFiled: March 17, 2000Date of Patent: April 17, 2001Assignee: Ecolab, Inc.Inventors: Joseph I. Kravitz, Richard O. Ruhr, Michael E. Besse
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Patent number: 6200942Abstract: A cleaning composition that can be dissolved in water to form a cleaning solution for cleaning metal articles, comprises 10% (m/m) iodine, 65% (m/m) tartaric acid, 5% (m/m) sodium lauryl sulphate and 20% (m/m) citric acid. The cleaning solution can be applied to the surface of a metal article for cleaning it. The invention extends to the cleaning solution which includes 20 grams of the chemical composition dissolved in one litre of water.Type: GrantFiled: July 23, 1999Date of Patent: March 13, 2001Inventor: Magdelena Christiana Cornelia Stols
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Patent number: 6200945Abstract: The present invention provides a solvent composition that is environmentally safe and has a palatable odor. The solvent composition can be used in numerous applications such as cleaning metal and non-metal surfaces and as a thinning agent. The solvent composition of the invention includes acetone, methyl propyl ketone, isopropyl alcohol, and n-butyl acetate; includes less than 3% methyl isobutyl ketone; and is substantially free of other undesirable chemicals such as methylene chloride, 1,1,1-trichloroethane, methyl ethyl ketone, and toluene. The present invention also includes a method of cleaning a metal or non-metal surface and thinning a composition using the solvent composition of the invention.Type: GrantFiled: May 20, 1999Date of Patent: March 13, 2001Assignee: McDonnell Douglas CorporationInventors: Edward D. Lally, Richard J. Menke
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Patent number: 6156129Abstract: The invention relates to a composition useful for cleaning metal surfaces immersed in an aqueous system. The composition comprises as a mixture: an organic carboxylic acid; a non chelating amine; a chelating agent; and preferably a sulfur-containing polymer.Type: GrantFiled: August 17, 1998Date of Patent: December 5, 2000Assignee: Ashland Inc.Inventors: Linda M. Hlivka, Joseph Mihelic, Bruce L. Libutti
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Patent number: 6121219Abstract: The invention relates to compositions and methods for cleaning typically organic beverage and food soils. The cleaning composition is formulated to remove carbohydrate and proteinaceous soils from hard surfaces. The formulations of the invention are directed to remove carbohydrate and proteinaceous soils from beverage manufacturing locations such as soils arising in the manufacture of malt beverages, fruit juices, dairy products, etc.Type: GrantFiled: August 10, 1999Date of Patent: September 19, 2000Assignee: Ecolab Inc.Inventors: Brandon L. Herdt, David A. Halsrud
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Patent number: 6114294Abstract: The invention relates to the inhibition of tripolyphosphate and pyrophosphate scales in aqueous systems involving adding to said aqueous system at least one copolymer comprising the following monomers in polymerized form:(I) 50-80% by weight of one or more weak acids; (II) 2-50% by weight of one or more strong acids;(III) 0-30% by weight of one or more monoethylenically unsaturated C.sub.4 -C.sub.8 dicarboxylic acids; and(IV) 0-30% by weight of one or more monomethylenically unsaturated monomers polymerisable with (I), (II) and (III);wherein the total of monomers (I), (II), (III), and (IV) equals 100% by weight of copolymer.The invention is particularly suited to the inhibition of tripolyphosphate and pyrophosphate scales which occur as a result of using low phosphate (STPP) containing detergent formulations.Type: GrantFiled: May 1, 1998Date of Patent: September 5, 2000Assignee: Rohm and Haas CompanyInventors: Francois Gauthier, Jan Shulman, Barry Weinstein, Andrea Keenan, Yves Duccini
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Patent number: 6083890Abstract: An improved acidic cleaning composition comprising a low acetate xanthan gum as a rheological control agent exhibits greater, longer lasting stability and shelf-life than acidic cleaning compositions with xanthan gum have exhibited in the past.Type: GrantFiled: June 6, 1997Date of Patent: July 4, 2000Assignee: Monsanto CompanyInventors: Frank Miskiel, Yogesh Solanki
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Patent number: 6080709Abstract: The present invention relates to a cleaning solution for cleaning substrates, to which a metallic wiring has been applied, being capable of easily removing the metallic impurities of the substrate surface without corroding the metal, not putting a strain on the environment, and not causing a shelf life problem.The cleaning solution comprising at least one member selected from a group consisting of oxalic acid, ammonium oxalate and polyaminocarboxylic acids, but contains no hydrogen fluoride.Type: GrantFiled: August 11, 1998Date of Patent: June 27, 2000Assignees: Kanto Kagaku Kabushiki Kaisha, NEC CorporationInventors: Norio Ishikawa, Kiyoto Mori, Hidemitsu Aoki
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Patent number: 6046148Abstract: A light duty liquid detergent with desirable cleansing properties to the human skin comprising a C.sub.8-18 ethoxylated alkyl ether sulfate anionic surfactant, a sulfonate anionic surfactant, an organic acid and water.Type: GrantFiled: October 1, 1999Date of Patent: April 4, 2000Assignee: Colgate-Palmolive Co.Inventors: Christine Toussaint, Jean Massaux, Isabelle Leonard, Claude Blanvalet
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Patent number: 6022837Abstract: A composition for rinsing a memory hard disc, which comprises water and an additive selected from the group consisting of an oxo-acid, an oxo-acid salt and a chloride.Type: GrantFiled: November 17, 1997Date of Patent: February 8, 2000Assignee: Fujimi IncorporatedInventor: Toshiki Oowaki
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Concentrate for a dihydrogen phosphate-based metal cleaning composition that does not damage plastic
Patent number: 5998348Abstract: An aqueous liquid composition containing dihydrogen phosphate salt, surfactant(s), and a dual coordinate bonding agent for iron cleans soiled metal surfaces without damaging any plastic parts that come into contact with the composition, supporting the growth of bacteria that cause unpleasant odors, or obscuring the transparency of any transparent window that it contacts. The composition is particularly useful for cleaning unpainted aluminum sided rail transport cars that have polycarbonate housings insulating electrical contact points that provide motive electric power to the cars; many conventional aqueous alkaline and acid cleaners promote stress cracking of polycarbonate plastics.Type: GrantFiled: October 1, 1998Date of Patent: December 7, 1999Assignee: Henkel CorporationInventor: Donald P. Murphy -
Patent number: 5998349Abstract: The invention relates to a descaling formulation comprising cellulose microfibrils, in which at least 80% of the cells have primary walls and not more than 20% of the cells have secondary walls, with a degree of crystallinity of not more than 50%. The pH of the formulation is less than or equal to 1 and more particularly less than or equal to 0.5.Type: GrantFiled: April 2, 1998Date of Patent: December 7, 1999Assignee: Rhodia ChimieInventor: Veronique Guillou
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Patent number: 5998358Abstract: The invention relates to compositions and methods for cleaning typically organic beverage and food soils. The cleaning composition is formulated to remove carbohydrate and proteinaceous soils from hard surfaces. The formulations of the invention are directed to remove carbohydrate and proteinaceous soils from beverage manufacturing locations such as soils arising in the manufacture of malt beverages, fruit juices, dairy products, etc.Type: GrantFiled: March 23, 1999Date of Patent: December 7, 1999Assignee: Ecolab Inc.Inventors: Brandon L. Herdt, David A. Halsrud
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Patent number: 5981449Abstract: Aqueous cleaning compositions for removing limescale on hard surfaces comprise maleic acid, an acid which has a first pKa not exceeding 5, and an acid-stable thickener. Compositions comprising maleic acid and alkyl- or aryl-sulphonic acids in combination with thickeners such as xanthan gums are used for removing limescale, for example in large appliances such as automatic dish washers and laundry apparatus.Type: GrantFiled: May 6, 1998Date of Patent: November 9, 1999Assignee: The Procter & Gamble CompanyInventors: Dario Rapisarda, Eddy Vos
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Patent number: 5977054Abstract: Disclosed are mildly acidic liquid compositions for use in cleaning hard surfaces. The compositions contain from about 1% to about 60% of an amine oxide detergent surfactant, an aqueous carrier liquid, and an acidifying agent having a pK.sub.a of less than about 6.0. The compositions contain enough of the acidifying agent to protonate at least about 10% of the amine oxide species within the compositions and to provide a composition pH of between about 3 and 7. These no-rinse liquid hard surface cleaning compositions have excellent cleaning properties, they do not leave a visible residue when they dry, and they cause minimal or no staining of vinyl surfaces. Also disclosed are a method for cleaning vinyl surfaces using the liquid compositions, and non-liquid compositions from which the mildly acidic liquid compositions can easily be obtained by adding an aqueous liquid.Type: GrantFiled: October 15, 1996Date of Patent: November 2, 1999Assignee: The Procter & Gamble CompanyInventor: Thomas James Wierenga
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Patent number: 5972868Abstract: Alkaline earth and transition metal scaling such as calcium and magnesium scaling can be controlled or removed in pipes, vessels, heat exchanges, evaporators, and filters, and in the oil field applications such as, for example, for drilling, production, and recovery operations with the addition of an effective amount of 2-hydroxyethyl iminodiacetic acid (HEIDA) or a salt thereof.Type: GrantFiled: July 13, 1998Date of Patent: October 26, 1999Assignee: The Dow Chemical CompanyInventors: Phillip S. Athey, David A. Wilson, Druce K. Crump
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Patent number: 5972862Abstract: There is disclosed a cleaning liquid for producing a semiconductor device which comprises (A) fluorine-containing compound; (B) water-soluble or water-miscible organic solvent; and (C) inorganic acid and/or organic acid, optionally, further comprises (D) quaternary ammonium salt or (D') a specific organic carboxylic acid ammonium salt and/or an organic carboxylic acid amine salt; as well as a process for producing a semiconductor device by forming a resist pattern on a substrate equipped on the surface with an insulating film layer or a metallic electroconductive layer, forming a via hole or electric wiring by dry etching, removing the resist pattern by ashing treatment with oxygen plasma; and effecting an cleaning treatment with the above cleaning liquid. The above cleaning liquid and production process can readily remove the deposit polymer formed in the case of dry etching without impairing metallic film and insulating film.Type: GrantFiled: July 28, 1997Date of Patent: October 26, 1999Assignee: Mitsubishi Gas ChemicalInventors: Yoshimi Torii, Shunji Sasabe, Masayuki Kojima, Kazuhisa Usuami, Takafumi Tokunaga, Kazusato Hara, Yoshikazu Ohira, Tsuyoshi Matsui, Hideto Gotoh, Tetsuo Aoyama, Ryuji Hasemi, Hidetoshi Ikeda, Fukusaburo Ishihara, Ryuji Sotoaka
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Patent number: 5942481Abstract: The caustic cleaner of the present invention has a freezing point of no more than about 40.degree. F. The caustic cleaner is a mixture of aqueous sodium hydroxide and an organic salt derived from the reaction of sodium hydroxide and gluconic acid at elevated temperatures.Type: GrantFiled: June 12, 1997Date of Patent: August 24, 1999Assignee: Charvid Limited Liability Co.Inventor: Charles Bullick Talley
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Patent number: 5935921Abstract: The present invention relates to a liquid descaling composition containing a phosphoric acid, a phosphonic acid, a cationic surfactant, an amine oxide and water.Type: GrantFiled: January 26, 1999Date of Patent: August 10, 1999Assignee: Colgate-Palmolive Co.Inventor: Philippe Meunier