The Bleach Or Oxidant Component Contains Peroxy Patents (Class 510/372)
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Patent number: 6475967Abstract: A stain removing liquid dish cleaning composition with desirable cleansing and de-staining properties comprising a C8-18 ethoxylated alkyl ether sulfate, two anionic surfactant, a betaine surfactant, a hydroxy containing organic acid, polyethylene glycol, peracetic acid and water.Type: GrantFiled: March 5, 2002Date of Patent: November 5, 2002Assignee: Colgate-Palmolive CompanyInventors: Evangelia Arvanitidou, Mohamed Omer
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Patent number: 6472360Abstract: The invention provides liquid hard surface cleaning compositions comprising multiple partial compositions held separately from each other in a multiple compartment container which is provided with a non-spray dispensing system. One partial composition comprises a peroxygen bleach compound, preferaqbly hydrogen peroxide. The total composition comprises a multi-component thickening system of which the components are divided over the partial compositions in such a way that the total composition thickens on dispensing. Each partial composition has a pH at which the components in it are stable, while after mixting the total composition has a pH suitable for cleaning. The compositions preferably contain a quaternary imine salt bleach activator and a detergent surfactant. The number of partial compositions and of the compartments in the container is preferably 2.Type: GrantFiled: April 12, 2000Date of Patent: October 29, 2002Assignee: Unilever Home & Personal Care USA division of Conopco, Inc.Inventors: David Victor Beggs, Alexander Martin, Nicola Rogers, David William Thornthwaite, Joan Lesley Williams, Fraser William Whyte
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Patent number: 6451064Abstract: Liquid multipurpose cleaning compositions comprising a peroxygen bleach, a surfactant that exhibits a foaming property in the presence of a peroxygen bleach and a foam reducing system and processes for using same are provided.Type: GrantFiled: June 19, 2000Date of Patent: September 17, 2002Assignee: Procter & GambleInventors: Valerio Del Duca, Carlo Ricci, Carla Scorsini
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Patent number: 6450181Abstract: A cleaning solution for electronic materials contains dissolved oxygen gas at a concentration greater than atmospheric saturation concentration, 0.1-10,000 mg/liter of ammonia, and 0.1-10,000 mg/liter of hydrogen peroxide in water. Alternatively, the cleaning solution contains dissolved reducing agents, 0.1-10,000 mg/liter of ammonia, and 0.1-10,000 mg/liter of hydrogen peroxide in water. A method for making the cleaning solution of the present invention is provided. A method for cleaning electronic materials using the cleaning solution of the present invention is also provided.Type: GrantFiled: April 4, 2000Date of Patent: September 17, 2002Assignee: Kurita Water Industries Ltd.Inventors: Hiroshi Morita, Tetsuo Mizuniwa, Junichi Ida
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Patent number: 6448214Abstract: The present invention relates to a low viscosity, aqueous liquid composition suitable for bleaching and pretreating soiled fabrics. Such composition contains a peroxygen bleach, an ethoxylated nonionic surfactant, a zwitterionic betaine surfactant and a viscosity reducing agent. In addition to improved cleaning performance, such composition provides satisfactory fabric and color safety when used as a laundry pretreater.Type: GrantFiled: August 29, 2000Date of Patent: September 10, 2002Assignee: The Proctor & Gamble CompanyInventors: Valerio Del Duca, Carlo Ricci, Roberto Scaramella
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Patent number: 6440920Abstract: The present invention relates to liquid or gel detergents which provide enhanced cleaning, especially improved stain removal and tough food particle removal on plastics, fabrics, and other substrates. These cleaning compositions comprise a diacyl peroxide bleaching agent.Type: GrantFiled: January 25, 1999Date of Patent: August 27, 2002Assignee: The Procter & Gamble CompanyInventors: Kofi Ofosu-Asante, Howard David Hutton
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Patent number: 6440921Abstract: The present invention relates to a bleaching composition comprising a pre-formed peroxycarboxylic acid and a surfactant system comprising at least two surfactants. These compositions are stable to deliver improved bleaching performance while also being safe to color and fabric. Furthermore, the compositions herein are also chemically and physically stable upon prolonged periods of storage time.Type: GrantFiled: May 7, 2001Date of Patent: August 27, 2002Assignee: The Procter & Gamble CompanyInventors: Gloria Di Capua, Pierre Antoine Dresco, Stefano Scialla
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Patent number: 6436445Abstract: An oxidizing species is described herein as a reaction product through an in situ preparation combining a quaternary or protonizable nitrogen compound, an oxidant compound and a halide source at controlled proportions in an aqueous, non-aqueous, gel, aerosol, solid-phase or powdered media. The oxidizing species can be used to reduce microbial and viral populations on a surface or object or in a body or stream of water. The invention thus finds applications as a bleach, sanitizer, oxidant, or in any other application in which an oxidizing agent can be beneficially used alone or in a formulation.Type: GrantFiled: March 26, 1999Date of Patent: August 20, 2002Assignee: Ecolab Inc.Inventors: Robert D. P. Hei, Kim R. Smith, Polly D. Laugen, Shaun P. Kennedy
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Patent number: 6432901Abstract: A bleach catalyst system comprising in combination, a macrocyclic organic ligand of formula (I): wherein R1 and R2 can each independently be absent, H, alkyl or aryl, optionally substituted; t and t′ are each independent integers from 2-3; each D can independently be N, NR3, PR3, O or S, wherein each R3 is independently H, alkyl or aryl, optionally substituted by one or more suitable substituents such as C1-4 alkyl groups, or is a bridging group such as C1-6 alkylene, either to another R3 group in the same macrocycle or to another independently defined macrocycle or to another independently defined macrocyclic ligand of formula (I), wherein any bridging group optionally contains an optionally substituted heteroatom such as nitrogen; and s is an integer from 2-5; and a water-insoluble manganese compound.Type: GrantFiled: December 19, 2000Date of Patent: August 13, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Dai Cong-Yun, Dao-Li Deng, Ronald Hage, Chang-Qing Ye, Hong Zeng
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Patent number: 6423676Abstract: N,N diacyl O-substituted imide bleach activators and compositions employing them are provided. The activators have the general formula: wherein X is selected from O, NR16 and S; e is 0 or 1; f is 0 or 1; R16 is selected from H and C1-C4 linear or branched, saturated or unsaturated alkyl groups; and R1 is preferably phenyl or C7-C13 linear or branched chain, saturated or unsaturated alkyl; R2 is preferably C1-C10 branched or unbranched, saturated or unsaturated alkyl and R3 is preferably C1-C12 linear or branched chain, saturated or unsaturated alkyl. Bleach additive and bleaching compositions including the bleach activators and methods of cleaning fabrics are also provided.Type: GrantFiled: May 18, 2001Date of Patent: July 23, 2002Assignee: The Procter & Gamble CompanyInventors: Gregory Scot Miracle, Robert Richard Dykstra
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Patent number: 6423265Abstract: A method by which dental equipment, such as dental scalers, can be sanitized using a detergent or treating composition containing a surfactant and a solvent such as water is disclosed. The method involves taking the used dental equipment and contacting it with the treating composition, and subjecting both the equipment and composition to microwaves. The composition foams during microwaving and/or immerses the equipment such that microwave arcing is avoided, and such that the dental equipment is sanitized.Type: GrantFiled: November 1, 2000Date of Patent: July 23, 2002Assignee: The Procter & Gamble CompanyInventors: Alan Scott Goldstein, Howard David Hutton
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Patent number: 6413926Abstract: A process for preventing the redeposition of migrant dyes in a washing liquor by adding to each liter of the washing liquor, which comprises a peroxide-containing detergent, from 0.5 to 150 mg of one or more asymmetric manganese complexes of the salen type.Type: GrantFiled: April 13, 2001Date of Patent: July 2, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Frank Bachmann, Josef Dannacher, Cornelia Makowka, Gunther Schlingloff, Peter Weingartner, Grit Richter
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Patent number: 6407045Abstract: The invention set out to improve the oxidizing and bleaching effect of inorganic peroxygen compounds in dishwashing, more particularly machine dishwashing, in terms of their storage stability. This was essentially achieved by using particulate compounds corresponding to formula R1R2R3N−CH2CN X+, in which R1, R2, and R3 independently of one another represent an alkyl, alkenyl or aryl group containing 1 to 18 carbon atoms, in addition to which the groups R2 and R3 may even be part of a heterocycle including the N atom and optionally other hetero atoms, and X is a charge-equalizing anion. Dishwashing detergents, more particularly machine dishwashing detergents, contain about 1% by weight to 10% by weight of this bleach-boosting agent.Type: GrantFiled: October 2, 2001Date of Patent: June 18, 2002Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Christian Nitsch, Horst-Dieter Speckmann, Juergen Haerer, Andreas Lietzmann, Susan P. Huestis
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Patent number: 6399559Abstract: This invention relates to organosilyl peroxide compounds which are stable in aqueous systems and are used for bleaching and cleaning applications. More particularly, this invention is concerned with the stability of bis(organosilyl)peroxides when formulated in aqueous and non-aqueous delivery systems. The liquid detergents containing the organosilyl peroxide compounds of this invention exhibit excellent bleaching performance and stain removal properties on fabrics at typical low wash temperatures.Type: GrantFiled: June 30, 2000Date of Patent: June 4, 2002Assignees: Dow Corning Corporation, Dow Corning SAInventors: Russell Allen Elms, Franck Renauld, Anil K. Tomar
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Patent number: 6399558Abstract: A washing and cleaning process which comprises adding to the corresponding liquor comprising a peroxide-containing washing and cleaning agent 1 to 500 millimoles per liter of liquor of one or more than one compound of the salene type.Type: GrantFiled: September 4, 2001Date of Patent: June 4, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Menno Hazenkamp, Frank Bachmann, Cornelia Makowka, Marie-Josée Dubs, Grit Richter, Gunther Schlingloff, Josef Dannacher
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Patent number: 6399557Abstract: Laundry or cleaning composition comprising: (a) an effective amount, preferably from about 0.0001% to about 99.9%, more typically from about 0.1% to about 25%, of a bleach activator and/or organic percarboxylic acid; (b) a catalytically effective amount, preferably from about 1 ppb to about 99.9%, of a transition-metal bleach catalyst which is a complex of a transition-metal and a cross-bridged macropolycyclic ligand; and (c) at least about 0.1% of one or more laundry or cleaning adjunct materials, preferably comprising an oxygen bleaching agent. Preferred compositions are laundry compositions and automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits through the use of such catalysts in combination with bleach activators and/or organic percarboxylic acids.Type: GrantFiled: April 11, 2001Date of Patent: June 4, 2002Assignee: The Procter & Gamble CompanyInventors: Christopher Mark Perkins, Regine Labeque, Barbara Kay Williams, James Pyott Johnston, David Johnathan Kitko, James Charles Theophile Roger Burckett-St. Laurent, Michael Eugene Burns
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Patent number: 6391840Abstract: The invention provides liquid bleaching compositions comprising multiple partial compositions held separately from each other in a multiple compartment container. One partial composition comprises a peroxygen bleach compound, preferably hydrogen peroxide. One partial composition (which may be the same as the one containing the peroxygen compound) comprises an imine or oxaziridine bleach activator compound. One partial composition, which is different from the one containing the bleach activator, comprises an alkaline compound in amount sufficient to raise the pH of the total composition to a value at which the bleach system is effective. The bleach activator compound is preferably a sulfonimine or a quaternary imine salt. The number of partial compositions and of the compartments in the container is preferably 2.Type: GrantFiled: April 11, 2000Date of Patent: May 21, 2002Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Katherine Mary Thompson, David William Thornthwaite
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Patent number: 6391839Abstract: Detergent compositions comprising ethylenediamine-N,N′-disuccinic acid or salts thereof, an alkali metal percarbonate bleach and a crystalline layered sodium silicate of formula LMSixO2xH.yH2O wherein L is an alkali metal, and M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20 are provided. The compositions also preferably comprise additional non-phosphate detergent builder compounds.Type: GrantFiled: April 27, 1995Date of Patent: May 21, 2002Assignee: The Procter & Gamble CompanyInventors: Michael Crombie Addison, Michael Alan J. Moss
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Patent number: 6387863Abstract: The inventions is drawn to mixtures of manganese complexes and organic ligands which significantly improve the bleaching effect of hydrogen peroxide in washing liquours and prevent the reabsorption of migrating dyes in peroxide-containing washing liquors.Type: GrantFiled: September 4, 2001Date of Patent: May 14, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Menno Hazenkamp, Frank Bachmann, Cornelia Makowka, Marie-Josée Dubs, Grit Richter, Gunther Schlingloff, Josef Dannacher, Peter Weingartner
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Patent number: 6380142Abstract: The invention relates to novel storage-stable formulations containing at least one peroxide compound, at least one specific mediator, and at least one pH stabilizer. The invention further relates to the use of such storage-stable formulations as a component in enzymatic two-component bleaching systems.Type: GrantFiled: October 4, 2000Date of Patent: April 30, 2002Assignee: Bayer AktiengesellschaftInventors: Uwe Vogt, Markus Schindler
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Patent number: 6368420Abstract: A chemical cleaning system for a multi-tank or a single-tank mechanical warewashing machine is provided, having at least two separate components for aqueous dissolution or dilution to respective use concentrations, a first component comprising an enzyme or a mixture of an enzyme and a cleaning agent, and a second component comprising a bleach, wherein the first component is introduced into a wash zone or step and wherein the second component is introduced into a post-rinse zone or step.Type: GrantFiled: December 23, 1998Date of Patent: April 9, 2002Assignee: Diversey Lever, Inc.Inventors: Petrus Adrianus Angevaare, Paul Flu, John Richard Nicholson, Frederik Jan Schepers
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Patent number: 6365562Abstract: Laundry detergents and cleaners which, in addition to a peroxide compound, comprise a compound of the formula (R1R1)N—X—N(R1R1) (I) or metal complexes thereof, where X and R1 have the meanings listed in the description, are claimed.Type: GrantFiled: April 20, 2001Date of Patent: April 2, 2002Assignee: Clariant GmbHInventors: Claudia Fischer, Nicole Reichardt, Jörg Issberner
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Patent number: 6362151Abstract: A granular detergent composition containing a secondary (2,3) alkyl sulfate surfactant and a bleach/bleach activator system which has improved cleaning performance is provided. The detergent composition comprises: (a) from about 1% to about 40% of a secondary (2,3) alkyl sulfate surfactant; (b) from about 0.005% to about 5% of an enzyme; (c) from about 0.5% to about 20% of a peroxygen bleaching agent; and (d) from about 0.5% to about 20% of a bleach activator. The peroxygen bleaching compound and the bleach activator are in a molar ratio from about 1:1 to about 9:1. The detergent composition is stable, exhibits superior cleaning and contains a more biodegradable surfactant.Type: GrantFiled: November 18, 1997Date of Patent: March 26, 2002Assignee: The Procter & Gamble CompanyInventors: Todd Edmund Wichmann, Edward Eugene Getty
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Patent number: 6340395Abstract: A wet spray cleaning process for removing thick organic layers including hardened photoresist from the surface of silicon wafers yields low residual particle counts for photoresist thicknesses up to 3 microns, and maintains low residual particle density for oxide-covered wafer regions. The cleaning process uses multiple cycles of SPM/DI/APM/DI, without an intervening drying step therebetween.Type: GrantFiled: March 16, 2000Date of Patent: January 22, 2002Assignee: Advanced Micro Devices, Inc.Inventors: Jacques Bertrand, Barry Dick, Shu Tsai Wang, Weiwen Ou, Lynne A. Okada, Yen C. Chu
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Patent number: 6326342Abstract: The invention relates to a bleaching composition. In particular the invention provides a bleaching composition which comprises: (i) a bleaching agent, and (ii) as bleach catalyst, a polyoxometalate of Keggin, Dawson or Finke structure and having the general formula (II) (A′)a′(Cox′Yy′Mm′Oo).cH2O (II) wherein the or each A′, which may be the same or different, is a cation; a′ has a value such that (A′)a, counters the anionic charge of (Cox′Yy′Mm′Oo); x′ has a value of 0.25 to 4; the or each Y, which may be the same or different, represents P, Si or Co; y′ is 1 or 2; o has a value of 34 to 68; the or each M, which may be the same or different, represents W, Mo, V, Nb or Ta; m′ has a value of between 9 and 18; c has a value of between 0 and 84. The bleaching compositions according to the invention have good bleaching performance and can be used without a bleach activator, e.g.Type: GrantFiled: August 22, 2000Date of Patent: December 4, 2001Assignee: U.S. Borax Inc.Inventors: Michael J. Greenhill-Hooper, Fernando Rey-Garcia, Avelino Corma-Canos, Jose Luis Jorda-Moret
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Publication number: 20010044397Abstract: There is provided a bleaching enzyme capable of generating a bleaching chemical and having a high binding affinity for non-colored compounds present in stains on fabrics, said non-colored compounds having a molecular weight of at least 100, preferably of at least 1,000 and more preferably of at least 5,000. Furthermore, there is provided an enzymatic bleaching composition comprising said bleaching enzyme and a surfactant and a process for bleaching stains present of fabrics.Type: ApplicationFiled: February 15, 2001Publication date: November 22, 2001Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Mark John Berry, Daniel Convents, Paul James Davis, Michael John Gidley, Cornelis Paul Van Der Logt
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Patent number: 6316399Abstract: A cleaning composition including a terpene such as D-limonene or Orange oil and hydrogen peroxide or an alkaline stable peroxide in a surfactants based aqueous solution. The composition in various specific formulations is a micro-emulsion useful for a variety of materials and for both industrial and household applications.Type: GrantFiled: February 10, 1997Date of Patent: November 13, 2001Assignee: Envirox, L.L.C.Inventors: Arman V. Melikyan, Patrick H. Stewart
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Publication number: 20010036908Abstract: A laundry treatment composition comprising peroxygen bleach and a water-soluble or water dispersible rebuild agent for redeposition onto a fabric during the laundry process, wherein the fabric rebuild agent undergoes during the laundry process, a chemical change by which change the affinity of the material for the fabric is increased. The peroxygen bleach was found to increase the deposition of the fabric rebuild agent.Type: ApplicationFiled: March 29, 2001Publication date: November 1, 2001Applicant: Unilever Home & Personal Care USA, Division of Conopco Inc.Inventors: Andrew Hopkinson, Christopher Clarkson Jones, David Richard Mealing
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Patent number: 6310025Abstract: The present invention relates to a process for pretreating soiled fabrics with a liquid composition comprising a peroxygen bleach and a soil dispersing agent selected from the group consisting of an ethoxylated monoamine, an ethoxylated diamine, and ethoxylated polyamine, an ethoxylated amine polymer and mixtures thereof. This invention also discloses liquid compositions suitable for pretreating fabrics, comprising a peroxygen bleach, a surfactant, and a soil dispersing agent selected from the group consisting of an ethoxylated monoamine, an ethoxylated diamine, an ethoxylated polyamine, an ethoxylated amine polymer and mixtures thereof, said composition being formulated either as an emulsion or a microemulsion.Type: GrantFiled: September 4, 1998Date of Patent: October 30, 2001Assignee: The Procter & Gamble CompanyInventors: Valerio Del Duca, Valentina Masotti, Stefano Scialla
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Publication number: 20010034309Abstract: A method of cleaning of an inorganic filler, upon which the inorganic filler used in resin materials for industrial or biological use, particularly dental resin restorative materials, can be more firmly bound to a resin matrix as a substrate, as well as a method of surface processing of the inorganic filler, are provided. The inorganic filler surface is cleaned with an aqueous solution of a peroxo acid and/or a peroxo acid salt, washed with water, and then cleaned with an organic solvent. Further, the cleaned inorganic filler is subjected to a silane coupling processing, thereby the inorganic filler being processed.Type: ApplicationFiled: March 22, 2001Publication date: October 25, 2001Applicant: GC CorporationInventors: Hideaki Shintani, Masayuki Okazaki, Yasuhiro Yoshida, Kenichi Shirai, Bart Van Meerbeek, Daisuke Usuki
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Patent number: 6306219Abstract: The present invention is in the field of liquid or gel detergents. More specifically, the invention relates to a method for removing stains and/or odors and for disinfecting plastics, and other substrates by applying a liquid or gel detergent composition to the substrate and subjecting the substrate to microwaves. This method provides enhanced cleaning and improved stain removal on plastics, and other substrates. These cleaning compositions include a bleaching agent, preferably diacyl peroxide in a liquid or gel detergent formulation. These compositions in combination with the method of microwaving are also very effective in disinfecting and deodorizing substrates.Type: GrantFiled: January 25, 1999Date of Patent: October 23, 2001Assignee: The Procter & Gamble CompanyInventors: Kofi Ofosu-Asante, Howard David Hutton
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Patent number: 6306812Abstract: Laundry or cleaning composition comprising: a) an effective amount of a bleach activator and/or organic percarboxylic acid; b) a catalytically effective amount of a transition-metal bleach catalyst which is a complex of a transition-metal and a cross-bridged macropolycyclic ligand; and c) at least about 0.1% of one or more laundry or cleaning adjunct materials. Preferred compositions are laundry compositions and automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits through the use of such catalysts in combination with bleach activators and/or organic perearboxylic acids.Type: GrantFiled: September 7, 1999Date of Patent: October 23, 2001Assignee: Procter & Gamble Company, TheInventors: Christopher Mark Perkins, Regine Labeque, Barbara Kay Williams, James Pyott Johnston, David Johnathan Kitko, James Charles Theophile Roger Burckett-St. Laurent, Michael Eugene Burns
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Patent number: 6306808Abstract: The present invention relates to the use of certain manganese complexes as catalysts for reactions with peroxy compounds for bleaching colored stains on hard surfaces. The invention also relates to cleaning agents for hard surfaces comprising such manganese catalysts.Type: GrantFiled: February 15, 2001Date of Patent: October 23, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Menno Hazenkamp, Marie-Josée Dubs, Frank Bachmann, Gunther Schlingloff, Rachel Allemann, Josef Dannacher
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Patent number: 6302921Abstract: A method for bleaching stained fabrics is provided by washing a stained fabric in an aqueous wash liquor in the presence of a wash additive that comprises a ligand that forms a transition metal complex as bleach catalyst, the complex catalysing bleaching of stains by atmospheric oxygen. The wash additive preferably comprises an iron complex comprising the ligand N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane. One or both of the wash additive and the wash liquor are substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system. The wash additive provides improved or broader stain profile bleaching.Type: GrantFiled: August 29, 2000Date of Patent: October 16, 2001Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Michel Gilbert Delroisse, David Andrew Jones, Richard George Smith, John Francis Wells
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Patent number: 6294514Abstract: Mono-long chain amine oxide surfactants can be prepared containing active levels of greater than about 30%, by weight of amine, and with low nitrite and nitrosamine levels and low levels of residual hydrogen peroxide when oxidized under controlled temperature conditions in the presence of bicarbonate material present at levels less than about 2.5%, by weight of amine, and without the presence of phase-modifying solvents.Type: GrantFiled: November 24, 1998Date of Patent: September 25, 2001Assignee: The Procter & Gamble CompanyInventor: Stanley James Welling
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Patent number: 6277802Abstract: Detergent formulations containing cationic nitriles are shown to exhibit enhanced stain removal, enhanced starchy soil removal and enhanced enzyme stability as compared to similar formulations containing TAED.Type: GrantFiled: March 24, 2000Date of Patent: August 21, 2001Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Catherine Chiou, Narish Dhirajlal Ghatlia
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Patent number: 6277804Abstract: Disclosed is a process for preparing non-aqueous, particulate-containing liquid laundry detergent compositions which are in the form of a suspension of particulate material, preferably including peroxygen bleaching agent and an organic detergent builder, dispersed in a liquid phase structured alkylbenzene sulfonate anionic surfactant-containing powder. The compositions so prepared provide especially desirable cleaning and bleaching of fabrics laundered therewith and also exhibit especially desirable pourability and chemical and phase stability.Type: GrantFiled: December 23, 1998Date of Patent: August 21, 2001Assignee: The Procter & Gamble CompanyInventors: Jay I. Kahn, Mark A. Smerznak, Walter A. M. Broeckx, Iwein J. M. J. Goderis
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Patent number: 6274542Abstract: Storage stable aqueous acidic solutions, often having a pH of up to 1 containing an ester peracid and/or an acid peracid can be obtained by reacting a diester satisfying the general formula R1—O—CO—R2—CO—O—R3 in which R1 and R3 each represents a alkyl group containing from 1 to 4 carbon atoms which may the same of different and R2 represents an aliphatic alkylene group optionally unsaturated which may be linear or branched containing from 2 to 6 carbon atoms with aqueous hydrogen peroxide in the presence of an acid, such as sulphuric acid and permitting the compositions to progress towards equilibrium concentrations. By starting with a diester, perhydrolysis generates an ester peracid which is a particularly effective peracid. The process can be controlled to produce solutions containing a high peracid content and within a wide range of ratios of ester peracid to acid peracid.Type: GrantFiled: November 2, 1999Date of Patent: August 14, 2001Assignee: Solvay Interox LimitedInventors: Graham Carr, Alun P. James, Kelly J. Morton, John P. Sankey, Valerie Lawton
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Publication number: 20010012825Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen or air. A method of bleaching a substrate is provided that comprises applying to the substrate, in an aqueous medium, a specified organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by atmospheric oxygen. Also provided is a bleaching composition comprising, in an aqueous medium, atmospheric oxygen and an organic substance which forms a complex with a transition metal, the complex catalysing bleaching of the substrate by the atmospheric oxygen, wherein the aqueous medium is substantially devoid of peroxygen bleach or a peroxy-based or -generating bleach system.Type: ApplicationFiled: December 19, 2000Publication date: August 9, 2001Inventor: Ronald Hage
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Patent number: 6265366Abstract: A process for bleaching a surface, by applying to that surface an aqueous composition having a pH of 2 or less and comprises a mixture of (a) an aqueous composition comprising hydrogen peroxide or an organic peracid having a pH of greater than 2 but less than 7 and (b) an acidic composition wherein components (a) and (b) are mixed not more than two hours before being applied to the surface requiring bleaching. The organic acid of component (a) has the formula XC(O)OOH where X is hydrogen or CH3(CH2)n and n is 0 to 8. The acid composition (b) comprises hydrochloric, sulphamic, tartaric, phosphoric, oxalic, citric, salicylic or ascorbic acids.Type: GrantFiled: March 17, 1998Date of Patent: July 24, 2001Assignee: Reckitt Benckiser (UK) LimitedInventor: Heather Elizabeth Bonett
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Publication number: 20010008879Abstract: Low hue photobleaching compositions comprising organotin (IV), organogermanium (IV), organopaltinum (IV), organopalladium (IV), organolead (IV) or organophosphorous (III) phthalocyanine and napthalocyanines having Q-band absorption maxima at wavelengths greater than 660 nm and increased triplet state yields whereby production of singlet oxygen is increased. Use of Sn4+, Ge 4+, Pt4+, Pd4+, Pb4+, P3+ pthalocyanine and naphthalocyanines compounds in photobleaching compositions allows for formulation of low hue laundry compositions, bleach compositions, and hard surface cleaners.Type: ApplicationFiled: July 23, 1999Publication date: July 19, 2001Applicant: Alan David WilleyInventor: ALAN DAVID WILLEY
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Patent number: 6262007Abstract: Self-thickened aqueous cleaning compositions are described which comprise an alkyl sulfate anionic surfactant and an electrolyte system. The compositions are made physically stable, even at low temperature, by incorporating therein a nonionic surfactant from a selected class.Type: GrantFiled: May 3, 1994Date of Patent: July 17, 2001Assignee: The Procter & Gamble CompanyInventors: Stefano Scialla, Peter Rosalia Joannes Geboes, Michel Jean Carrie, Eddy Vos
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Patent number: 6255266Abstract: A method of cleaning elemental copper, cobalt, or nickel from the surface of equipment hardware without corroding or damaging the equipment parts and surfaces in the event of wafer breakage and non-wafer breakage is described. A solution comprising an alkyldione peroxide, a stabilizing agent, and alcohols is used to oxidize the metal and form soluble complexes which are removed by the cleaning solution. Also, a novel alkyldione peroxide solution for cleaning elemental copper, cobalt, or nickel from the surface of equipment hardware in the event of wafer breakage and non-wafer breakage is provided.Type: GrantFiled: September 11, 2000Date of Patent: July 3, 2001Assignee: Chartered Semiconductor Manufacturing Ltd.Inventors: Subhash Gupta, Simon Choo I, Mei Sheng Zhou, Paul Ho
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Publication number: 20010003221Abstract: The invention provides a method for increasing the brightness retention of a laundered fabric after numerous washing cycles by adding to an aqueous wash liquor a quantity of a commercial laundry detergent which delivers at least 0.1 g of an optical brightener into said wash liquor, said optical brightener exhibiting instability in the presence of hypochlorite; and prior to, concurrent with, or after the commercial laundry detergent, adding a bleaching composition in an amount of at least about 0.5 g/L. The bleaching composition contains about 2.5-10% alkali metal hypochlorite; about 0.05-5% of a bleach stable surfactant bearing at least one nitrogen atom; a bleach stable anionic surfactant or a hydrotrope, wherein the ratio of (ii) to (iii) is between about 10:1 to about 1:10; and an effective amount of a source of alkalinity.Type: ApplicationFiled: January 16, 2001Publication date: June 14, 2001Inventors: Fatemah H. Akbarian, Gregory Van Buskirk, Heidi J. Torres
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Publication number: 20010003737Abstract: A fabric bleaching composition comprising a peroxy compound and a specified manganese compound is disclosed, as well as a process for bleaching and/or cleaning a fabric by contacting it with said fabric bleaching composition.Type: ApplicationFiled: October 13, 1998Publication date: June 14, 2001Inventors: DIETER REINEHR, GEORGES METZGER
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Patent number: 6242407Abstract: The present invention relates to a liquid composition suitable for bleaching fabrics comprising a peroxygen bleach, from 0.001% to 10% by weight of the total composition of propyl gallate, and from 0.001% to 10% by weight of an antioxidant. These compositions are suitable for bleaching soiled fabrics, and especially pretreating fabrics while being safe to the fabrics and colors.Type: GrantFiled: May 21, 1999Date of Patent: June 5, 2001Assignee: The Procter & Gamble CompanyInventors: Gabriella Bertacchi, Valerio Del Duca, Carlo Ricci, Roberto Scaramella
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Patent number: 6242408Abstract: This invention relates to organosilyl peroxide compounds which are stable in aqueous systems and are used for bleaching and cleaning applications. More particularly, this invention is concerned with the stability of bis(organosilyl)peroxides when formulated in aqueous and non-aqueous delivery systems. The liquid detergents containing the organosilyl peroxide compounds of this invention exhibit excellent bleaching performance and stain removal properties on fabrics at typical low wash temperatures.Type: GrantFiled: November 25, 1998Date of Patent: June 5, 2001Assignees: Dow Corning Corporation, Dow Corning, S.A.Inventors: Russell Allen Elms, Franck Renauld, Anil K. Tomar
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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: 6235697Abstract: A laundry detergent composition is provided for enhanced whitening and stain removal of washed laundry comprising: a) from about 1% to about 50%, by weight, of a surfactant or surfactant mixture selected from the group consisting of anionic and nonionic surfactants; b) a protease enzyme in an amount sufficient to provide from at least about 0.030 to about 3.0 Kilo Novo Protease Units (KNPU) of activity of protease enzyme per gram of detergent composition; c) a cellulase enzyme of the endoglucanase type in an amount sufficient to provide from about 0.5 to about 100 CMC units per gram of detergent composition; and d) from about 0.5% to about 10% by weight, of an acrylic acid-based polymer and copolymer.Type: GrantFiled: May 12, 2000Date of Patent: May 22, 2001Assignee: Colgate-Palmolive Co.Inventors: Joseph Robert Knorr, Barbara Hepler, Mary Holmgren
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Patent number: 6235695Abstract: Complexes of the transition metals cobalt, iron, copper, and ruthenium having at least one and preferably at least five ammonia ligands are used to activate peroxygen compounds in aqueous cleaning solutions for hard surfaces. Compositions preferably contain 0.0025% to 0.25 by weight of the activating complex.Type: GrantFiled: October 1, 1998Date of Patent: May 22, 2001Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Helmut Blum, Peter Jeschke, Juergen Haerer, Siglinde Erpenbach, Christian Nitsch