The Bleach Or Oxidant Component Contains Peroxy Patents (Class 510/375)
  • Patent number: 6365564
    Abstract: Asymmetrical imide bleach activators for use in both solid and liquid additive, bleaching and detergent compositions are provided. The compounds have general formula (I) wherein R1 is a moiety selected from a specific group, R2 is a C1-C8 linear or branched chain saturated or unsaturated alkyl group and R3 is a C1-C4 linear or branched chain saturated or unsaturated alkyl group. Preferred compounds include the compounds when R2 and R3 are CH3. Bleach additive and bleaching compositions including the asymmetrical bleach activators and methods of cleaning fabrics are also provided.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: April 2, 2002
    Assignee: The Procter & Gamble Co.
    Inventors: Kevin Lee Kott, Gregory Scot Miracle, James Charles T. R. Burckett-St. Laurent, Robert Richard Dykstra
  • Patent number: 6362151
    Abstract: 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: Grant
    Filed: November 18, 1997
    Date of Patent: March 26, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Todd Edmund Wichmann, Edward Eugene Getty
  • Patent number: 6358903
    Abstract: 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: Grant
    Filed: March 29, 2001
    Date of Patent: March 19, 2002
    Assignee: Unilever Home and Personal Care, USA division of Conopco, Inc.
    Inventors: Andrew Hopkinson, Christopher Clarkson Jones, David Richard Mealing
  • Publication number: 20020028753
    Abstract: Laundry detergents and cleaners which, in addition to a peroxide compound, comprise a compound of the formula
    Type: Application
    Filed: April 20, 2001
    Publication date: March 7, 2002
    Applicant: Clariant GmbH
    Inventors: Claudia Fischer, Nicole Reichardt, Jorg Issberner
  • Publication number: 20020019323
    Abstract: A process for cleaning textile fabric without the need for conventional detergent systems comprising agitating the fabric in a composition comprising at least two immiscible liquids, for example, perchloroethylene or petroleum ether and water, having at least one liquid-liquid interface with an interfacial tension of at least 5 mN/m, preferably at least 10 mN/m, and where the concentration of the most polar liquid in the composition is from 10 to 90% by volume.
    Type: Application
    Filed: May 18, 2001
    Publication date: February 14, 2002
    Inventor: Vijaya Milind Bargaje
  • Publication number: 20020013247
    Abstract: The invention relates to catalytically bleaching substrates, especially laundry fabrics, with atmospheric oxygen and a peroxyl species. 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 and a peroxyl species. 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 provided with a peroxygen bleach or a peroxy-based or peroxy-generating bleach system.
    Type: Application
    Filed: February 28, 2001
    Publication date: January 31, 2002
    Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.
    Inventors: Ronald Hage, Ton Swarthoff, David Tetard, David William Thornthwaite
  • Publication number: 20020004470
    Abstract: This invention relates to a cleaning and lubricating solution for guns, gun bores, cartridges, and gun parts, and more especially for black powder guns, gun bores, cartridges, and gun parts. The solution is used to clean dirt and debris from the bores and other parts of black powder firearms and accessories. The solution cleans the bore and the residual material forms a protective coating or film of a light lubricating oil.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 10, 2002
    Inventors: Melvin Wright, John H. Hoffman
  • Publication number: 20020004474
    Abstract: The present invention relates to laundry detergent compositions comprising: A) from about 0.01%, preferably from about 0.
    Type: Application
    Filed: February 21, 2001
    Publication date: January 10, 2002
    Inventor: Kenneth Nathan Price
  • Publication number: 20020004471
    Abstract: A cleaning formulation, in tablet form, capable of providing uniform delivery of cleaning agents, fragrance and colorants while immersed in a the tank of a toilet.
    Type: Application
    Filed: February 23, 2001
    Publication date: January 10, 2002
    Applicant: THE CLOROX COMPANY
    Inventors: James E. Rader, Erika W. Feller, Rachel A. Watson-Clark
  • Patent number: 6334452
    Abstract: Automatic dishwashing compositions containing water soluble cationic surfactants are shown to reduce glass décor fading without composing tea stain removal.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: January 1, 2002
    Assignee: Unilever Home & Personal Care
    Inventors: Alla Tartakovsky, Joseph Oreste Carnali
  • Publication number: 20010056056
    Abstract: A laundry composition, preferably to be used in addition to a laundry detergent, comprises an acidic peroxidic liquid, and particles suspended in the liquid. The particles comprise a protective coating around a core which includes at least one active ingredient selected from a chelating agent, a dye-transfer inhibitor, an anti-fading agent, an anti-bacterial agent, a fabric softener, a transition metal compound and an optical brightener. The particles are stable in the acidic peroxidic liquid but dissolve or disperse under alkaline washing conditions. Surprisingly incorporation of active ingredient(s) into particles appears to give better washing results than the dissolution of such active ingredients in such a liquid.
    Type: Application
    Filed: December 21, 2000
    Publication date: December 27, 2001
    Inventors: Chris E. Housmekerides, Daniele Fregonese, Luca Zambelli, Dora Zamuner
  • Patent number: 6333300
    Abstract: Water-based dispersions of the &egr;-phthalimido peroxyhexanoic acid comprising as stabilizers copolymers of methyl-vinyl-ether with the acid and/or maleic anhydride, in 1:1 ratio with alternated structure, usable in detergent, hygienizing, cosmetic applications.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: December 25, 2001
    Assignee: Ausimont S.p.A.
    Inventors: Ugo Piero Bianchi, Claudio Troglia
  • Publication number: 20010046953
    Abstract: N,N diacyl O-substituted imide bleach activators and compositions employing them are provided.
    Type: Application
    Filed: May 18, 2001
    Publication date: November 29, 2001
    Applicant: The Procter & Gamble Company
    Inventors: Gregory Scot Miracle, Robert Richard Dykstra
  • Patent number: 6323014
    Abstract: There is provided a process for enhancing the activity of a phenol oxidizing enzyme, comprising adding to the enzyme, as an enhancer for the activity of the enzyme, one or more compounds having the formula: wherein: A is an optionally substituted electron-withdrawing group, chosen from the group consisting of nitrile, carboxyl, and esters and salts thereof, amides, aldehydes, ketones, sulfoxides, sulfones, or sulphonates, and B is an optionally substituted electron-donating group, chosen from the group consisting of the oxide anion, sulfide anion, oxides, amines, imines, hydroxides, sulfides, ethers, carboxylic acids, and halogen substituents, and R1-R5 may each independently represent hydrogen, hydroxy, halogen, nitroso, formyl, carboxyl, and esters and salts thereof, carbamoyl, sulfo, and esters and salts hereof, sulfamoyl, nitro, amino, phenyl, C1-C20 alkyl, C1-C8 alkoxy, carbonyl-C1-C6-alkoxy, aryl-C1-C6-alkyl, and R2 and R5 together may form an alkylene group or an alkenylene group.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: November 27, 2001
    Assignee: Unilever Home & Personal Care division of Conopco, Inc.
    Inventors: Greta Johanna Breel, Daniel Convents, Willem Van Liemt, Ton Swarthoff, Robin Stefan Twisker
  • Patent number: 6322748
    Abstract: A method for removing stains or odors and for disinfecting plastics, dishware, countertops, appliances, and other substrates by activating a bleaching composition with microwaves and applying the activated composition to the substrate to be cleaned, deodorized, and/or sanitized is presented. This method provides enhanced cleaning and improved stain removal as compared to the conventional use of cleaning compositions applied directly to a substrate.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: November 27, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Howard David Hutton, Kofi Ofosu-Asante
  • Publication number: 20010044398
    Abstract: Detergents and cleaners having improved performance against protein-containing soils, containing a protease of the subtilisin type, in which—in at least one of positions 3, 4, 99, 188, 193, 199 and 211 (BLAP counting)—the amino acid present in that position in the wild-type protease is replaced by another amino acid, and coated particulate alkali metal percarbonate.
    Type: Application
    Filed: February 16, 2001
    Publication date: November 22, 2001
    Inventors: Horst-Dieter Speckmann, Joerg Poethkow, Thomas Gassenmeier, Peter Schmiedel, Beatrix Kottwitz
  • Publication number: 20010044401
    Abstract: 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: Application
    Filed: April 11, 2001
    Publication date: November 22, 2001
    Applicant: The Procter & Gamble Company
    Inventors: Christopher Mark Perkins, Regine Labeque, Barbara Kay Williams, James Pyott Johnston, David Johnathan Kitko, James Charles Theophile Roger Burckett-St. Laurent, Michael Eugene Burns
  • Publication number: 20010044402
    Abstract: A bleach catalyst system comprising in combination, a macrocyclic organic ligand of formula (I): 1
    Type: Application
    Filed: December 19, 2000
    Publication date: November 22, 2001
    Inventors: Cong-Yun Dai, Dao-Li Deng, Ronald Hage, Chang-Qing Ye, Hong Zeng
  • Patent number: 6316400
    Abstract: The present invention relates to a liquid bleaching composition comprising a peroxygen bleach and a salt free zwitterionic betaine surfactant. These compositions are suitable to deliver excellent stain removal performance and bleaching performance on fabrics, with improved safety to the fabrics and colors especially under pretreatment conditions.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: November 13, 2001
    Assignee: The Procter & Gamble Co.
    Inventors: Valerio Del Duca, Stefano Giunti, Sabina Antonioli
  • Publication number: 20010036908
    Abstract: 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: Application
    Filed: March 29, 2001
    Publication date: November 1, 2001
    Applicant: Unilever Home & Personal Care USA, Division of Conopco Inc.
    Inventors: Andrew Hopkinson, Christopher Clarkson Jones, David Richard Mealing
  • Patent number: 6310026
    Abstract: 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: Grant
    Filed: March 22, 2001
    Date of Patent: October 30, 2001
    Assignee: GC Corporation
    Inventors: Hideaki Shintani, Masayuki Okazaki, Yasuhiro Yoshida, Kenichi Shirai, Bart Van Meerbeek, Daisuke Usuki
  • Patent number: 6306219
    Abstract: 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: Grant
    Filed: January 25, 1999
    Date of Patent: October 23, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Kofi Ofosu-Asante, Howard David Hutton
  • Publication number: 20010023237
    Abstract: A bleaching composition is provided comprising
    Type: Application
    Filed: December 20, 2000
    Publication date: September 20, 2001
    Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter Van Der Vlist
  • Publication number: 20010023236
    Abstract: A bleaching composition is provided comprising
    Type: Application
    Filed: December 20, 2000
    Publication date: September 20, 2001
    Inventors: Dirk Johannes Bijl, Ronald Hage, Jan Kevelam, Jean Hypolites Koek, Dennis Stephen Murphy, Irene Erica Smit, Johannes Jacob Verhagen, Pieter Van Der Vlist
  • Publication number: 20010023238
    Abstract: 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: Application
    Filed: April 13, 2001
    Publication date: September 20, 2001
    Inventors: Frank Bachmann, Josef Dannacher, Cornelia Makowka, Gunther Schlingloff, Peter Weingartner, Grit Richter
  • Patent number: 6277802
    Abstract: 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: Grant
    Filed: March 24, 2000
    Date of Patent: August 21, 2001
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventors: Catherine Chiou, Narish Dhirajlal Ghatlia
  • Patent number: 6273959
    Abstract: There is disclosed a semiconductor device cleaning method involving placing a cleaning solution containing 24 wt. % sulfuric acid, 5 wt. % hydrogen peroxide, 0.02 wt. % hydrogen fluoride, 0.075 wt. % n-dodecylbenzenesulfonic acid, and water into a quartz processing vessel and heating to no more than 100° C. A silicon wafer is immersed into the cleaning solution for 10 minutes and then washed by demineralized water for about 7 minutes. The surfaces of foreign particles on the wafer are etched by hydrogen fluoride, and n-dodecylbenzenesulfonic acid combines with the etched surfaces by sulfate ester bonding. The apparent diameter of the foreign particles increases and the repulsive force caused by zeta potential etc. increases, so that the foreign particles are unlikely to adhere to the surface of the silicon wafer permitting the foreign particles to be easily washed away in a water cleaning step.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: August 14, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Teruhito Oonishi, Ken Idota, Masaaki Niwa, Yoshinao Harada
  • Patent number: 6274542
    Abstract: 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: Grant
    Filed: November 2, 1999
    Date of Patent: August 14, 2001
    Assignee: Solvay Interox Limited
    Inventors: Graham Carr, Alun P. James, Kelly J. Morton, John P. Sankey, Valerie Lawton
  • Publication number: 20010012826
    Abstract: A process of washing textiles is presented involving the delayed release of ingredients from a detergent composition. The process involves first dissolving the detergent in water resulting in a pH below 8, slowly dissolving the coating on a coated alkalizing agent to raise the pH to above 8.5, and dissolving the polymeric acid coating on a detergent ingredient, due to the pH above 8.5, to release the ingredient into the wash water.
    Type: Application
    Filed: February 26, 2001
    Publication date: August 9, 2001
    Applicant: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Thomas Gassenmeier, Juergen Millhoff, Thomas Mueller-Kirschbaum
  • Publication number: 20010012825
    Abstract: 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: Application
    Filed: December 19, 2000
    Publication date: August 9, 2001
    Inventor: Ronald Hage
  • Patent number: 6265366
    Abstract: 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: Grant
    Filed: March 17, 1998
    Date of Patent: July 24, 2001
    Assignee: Reckitt Benckiser (UK) Limited
    Inventor: Heather Elizabeth Bonett
  • Patent number: 6262008
    Abstract: The invention relates to a stable sodium carbonate peroxyhydrate which is suited for use together with crystalline synthetic silicate-based detergents and is coated with an alkali metal sulfate and a copolymer or terpolymer of vinyl pyrrolidone.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: July 17, 2001
    Assignee: Kemira Chemicals Oy
    Inventors: Ilkka Renvall, Timo Korvela
  • Patent number: 6262007
    Abstract: 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: Grant
    Filed: May 3, 1994
    Date of Patent: July 17, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Peter Rosalia Joannes Geboes, Michel Jean Carrie, Eddy Vos
  • Patent number: 6255266
    Abstract: 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: Grant
    Filed: September 11, 2000
    Date of Patent: July 3, 2001
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Subhash Gupta, Simon Choo I, Mei Sheng Zhou, Paul Ho
  • Patent number: 6255272
    Abstract: The invention relates to particles comprising a peroxy compound with capability of realeasing hydrogen peroxide or peroxy acids in aqueous solutions and an amino acid of the formula (HOOC)2N—CnHmCOOH—R in which R is H, CH2OH OR CH3, n is 1, 2 or 3 and m is 0-2n; or a salt thereof. The invention also relates to use of the particles and a composition comprising such particles.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: July 3, 2001
    Assignee: Eka Chemicals AB
    Inventors: Hans Lagnemo, Monica Jigstam
  • Patent number: 6248707
    Abstract: A method for the “dry” production of sodium percarbonate (dry process), in which monohydrate crystals of sodium carbonate are reacted with a quasi-stoichiometric quantity of concentrated aqueous hydrogen peroxide solution, relative to the quantity of active oxygen required in the sodium percarbonate to be produced. This method can be combined to great advantage with subsequent compaction of the sodium percarbonate obtained. Sodium percarbonate products containing varying concentrations of active oxygen of at least 10 weight percent, particularly high active oxygen concentrations of above 14.5 weight percent, can be produced. The resulting sodium percarbonate products are distinguished in that they have remarkably advantageous dissolution rates, stabilities and compatibility with detergent bases, and are superior to conventional sodium percarbonates obtained, for example, by a crystallization process.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: June 19, 2001
    Assignee: Solvay Interox GmbH
    Inventors: Werner Doetsch, Manfred Mathes, Helmut Honig, Gabriele Wasem
  • Patent number: 6245731
    Abstract: The combination of packaging system comprising re-closing means with a stack of tablets (1) containing a bleaching agent unstable in a moisture environment, characterized in that the packaging device has a Moisture Vapor Transfer Rate of less than 20 g/m2/day measured at 40° C. and 75% eRH for avoiding ingress of water is disclosed. The packaging system may also have a micro-hole to allow gas release.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: June 12, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Bernard Cossec, Jacky Pierre Duquet, Gregory Bruce Huntington
  • Patent number: 6242408
    Abstract: 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: Grant
    Filed: November 25, 1998
    Date of Patent: June 5, 2001
    Assignees: Dow Corning Corporation, Dow Corning, S.A.
    Inventors: Russell Allen Elms, Franck Renauld, Anil K. Tomar
  • Patent number: 6242407
    Abstract: 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: Grant
    Filed: May 21, 1999
    Date of Patent: June 5, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Gabriella Bertacchi, Valerio Del Duca, Carlo Ricci, Roberto Scaramella
  • Patent number: 6239095
    Abstract: A process for the preparation of coated peroxygen compounds, in particular sodium percarbonate, by fluidized bed coating. By using a fluidized bed reactor with a radial inflow base, the passage openings of which allow the fluidized bed gas to emerge in the region of the opening at an angle of less than 35°, measured with respect to the horizontal, in the form of directed part streams, and in which are arranged spray nozzles, the pulse of which points in the same direction as the pulse of the fluidizing gas, it is possible to obtain products with an increased active oxygen stability. A circular reactor, the inflow base of which has lamellae overlapping like turbine blades and nozzles aligned in the direction of rotation of the fluidized bed is preferred.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: May 29, 2001
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Birgit Bertsch-Frank, Martin Bewersdorf, Lothar Kaiser, Rainer Kohlen, Ralph Overdick, Michael Scheibe
  • Patent number: 6235699
    Abstract: Liquid compositions having a pH up to 7 comprise from 0.01% to 20% by weight of the total composition of a peroxygen bleach, from 0.001% to 30% by weight of the total composition of an ethoxylated nonionic surfactant, from 0.001% to 20% by weight of a zwitterionic betaine surfactant at a weight ratio of the ethoxylated nonionic surfactant to the zwitterionic betaine surfactant of from 0.01 to 20. These compositions are suitable to deliver improved stain removal performance and improved bleaching performance on various inanimate surfaces.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: May 22, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Valerio Del Duca, Dennis Gerard O'Sullivan, Carlo Ricci, Roberto Scaramella, Stefano Giunti, Sabina Antonioli
  • Patent number: 6228179
    Abstract: 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: Grant
    Filed: March 10, 2000
    Date of Patent: May 8, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventor: Hitoshi Morinaga
  • Patent number: 6218352
    Abstract: This invention relates to a composite composition comprising granular sodium percarbonate with better stability in storage and fast solubility in water for the purpose of the sole use thereof or as a composition of a bleaching agent.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: April 17, 2001
    Assignee: Oriental Chemical Industries
    Inventors: Sang Hwa Lee, Chong Yun Kwag, Jong Pill Lee, Han Seog Cho
  • Patent number: 6214782
    Abstract: Detergent formulations containing cationic nitriles are shown to exhibit reduced silver tarnishing as compared to similar formulations containing TAED.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 10, 2001
    Assignee: Unilever Home & Personal Care, USA, division of Conopco, Inc.
    Inventors: Catherine Chiou, Narish Dhirajlal Ghatlia
  • Patent number: 6207108
    Abstract: Storage stable, aqueous acidic solutions having a pH in the range of from 1 to 5 comprising at least one ester peracid having general formula where R represents an alkyl group having from 1 to 4 carbons and x equals 1 to 4, are provided. The solutions can be prepared by contacting an aqueous solution of a carboxylic compound having general formula where x is from 1 to 4 and R represents an alkyl group having from 1 to 4 carbons with an inorganic peroxygen compound, preferably hydrogen peroxide, at a pH of less than 4 until at least some ester peracid is produced, and thereafter adjusting the pH to be in the range of from 1 to 5, if necessary.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: March 27, 2001
    Assignee: Solvay Interox Limites
    Inventors: Graham Carr, Alun Pryce James
  • Patent number: 6194368
    Abstract: The invention relates to a dishwasher detergent in the form of a multi-layer tablet comprising a bleach, a bleach activator, a silver/copper corrosion inhibitor and also other customary constituents, where the silver/copper corrosion inhibitor is not present together with the bleach and the bleach activator in one layer.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: February 27, 2001
    Assignee: Joh A. Benckiser, GmbH
    Inventors: Guido Wäschenbach, Paul Robinson, Brigitte Sandmann, Harald Magg, Wilfried Höflinger
  • Patent number: 6194367
    Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: February 27, 2001
    Assignee: Charvid Limited Liability Co.
    Inventor: Charles Bullick Talley
  • Patent number: 6187055
    Abstract: A detergent composition containing surfactant, builder component, oxygen-based bleaching agent, bleach activator, and enzyme, wherein the builder component is an oxidatively modified oligosaccharide which contains a —COOH group instead of a —CH(OH)—CHO group at its originally reducing end group and which has an average degree of oligomerization of from 2 to 20.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: February 13, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Beatrix Kottwitz, Joerg Poethkow, Horst Upadek
  • Patent number: 6187740
    Abstract: Granular detergent compositions contain a bleach and a cellulase enzyme derived from Trichodenna SPP. The compositions are especially useful in a fabric laundering process where bleaching activity is desired.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: February 13, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Jean-Luc Philippe Bettiol, Christiaan Arthur Jacques Kamiel Thoen
  • Patent number: 6180580
    Abstract: Soaking compositions are disclosed which comprise oxygen bleach, a sorbitan ester in combination with an alkyl sulphonate surfactant. Said compositions are diluted in water to form soaking liquors. The invention is particularly effective in removing particulate soils like silt and clay from fabrics as well as enzymatic stains and bleachable stains.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: January 30, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Gabriella Ardia, Stefano Scialla