Chemical Patents (Class 8/107)
  • Patent number: 6663677
    Abstract: Improved methods for wool whitening and garment washing are provided. More particularly, methods of the present invention employ a first reducing agent, preferably a borohydride material, and a second reducing agent, preferably a bisulfite material, to increase the brightness (whiteness) of wool and to reduce color components in certain garments, particularly denim. Methods of the present invention are particularly useful in the garment and piece goods industries.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 16, 2003
    Assignee: Rohm and Haas Company
    Inventors: Harrie Peter Schoots, Lester Franklin Stevens, Jr.
  • Patent number: 6645254
    Abstract: One or more 1-substituted-2,2,4-trimethylpentane-3-one derivatives represented by the following general formula (1): wherein X represents a benzene ring or a cyclohexane ring; and R represents an arbitrary hydrogen atom on the benzene ring or cyclohexane ring or a methyl group which substitutes the hydrogen atom are incorporated in a bleaching agent composition containing a chlorine-based bleaching agent component such as sodium hypochlorite or oxygen-based bleaching agent component such as sodium perborate.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: November 11, 2003
    Assignee: Takasago International Corporation
    Inventors: Takashi Aida, Hiroyuki Matsuda, Tsunehide Yoneyama, Toshimitsu Hagiwara
  • Patent number: 6599326
    Abstract: Chemical pulps or papers, especially kraft pulps or papers, which may still contain traces of lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a N,N-dialkylhydroxylamine, an ester, amide or thio substituted N,N-dialkylhydroxylamine or N,N-dibenzylhydroxylamine or an amminium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. N,N-Diethylhydroxylamine and N,N-dibenzylhydroxylamine and their acid salts are surprisingly effective for this purpose.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: July 29, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Raymond Seltzer, David Devore, Glen T. Cunkle, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Jean-Pierre Wolf, Randall B. Nelson
  • Patent number: 6569354
    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: Grant
    Filed: December 19, 2000
    Date of Patent: May 27, 2003
    Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.
    Inventor: Ronald Hage
  • Patent number: 6569209
    Abstract: A method for the treatment of a non-finished textile component in a cold batch process is provided. The method comprises the steps of treating a non-finished textile component in an aqueous bleaching solution of hydrogen and a hydrophobic bleach activator or hydrophobic peracid followed by a treatment time of from about 1 hour to about 15 hours at a temperature of 35° C. or less. Preferred bleach activators include the alkanoyloxybenzene sulfonates and in particular noanoyloxybenzene sulfonate. The method provides acceptable whiteness and superior fiber protection and fabric strength benefits in significantly reduced treatment times versus conventional.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: May 27, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Jiping Wang, Elizabeth Ann Eggert
  • Patent number: 6451063
    Abstract: A method for treating cellulosic materials is disclosed which comprises contacting the cellulosic material with a cellulase obtainable from Thermomonospora fusca corresponding to E5 or a derivative thereof. Particularly preferred methods comprise stonewashing and detergent cleaning of cotton fabrics, the production of paper products, as an additive to animal feed and in the production of food, starch, ethanol and sugar.
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: September 17, 2002
    Assignee: Genencor International, Inc.
    Inventors: Kathleen A. Clarkson, Barbara Swanson, Deborah Winetzky
  • Patent number: 6409770
    Abstract: A bleaching detergent composition comprising an enzyme having amino alcohol oxidase activity, a substrate for said enzyme, and a bleach catalyst or activator, a method of bleaching fabric stains with an enzymatic bleaching system comprising an enzyme having amino alcohol oxidase activity and a substrate for said enzyme, and a method of reducing dye transfer in a wash liquor by providing the liquor with an effective amount of an enzymatic bleaching system comprising an enzyme having amino alcohol oxidase activity and a substrate for said enzyme.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: June 25, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Albrecht Weiss, Maria Grothus, Achim Richert
  • Patent number: 6352562
    Abstract: Method for cleaning fabrics using laundry detergents and bleaching systems which comprise substituted benzoyl caprolactam bleach activators are presented. The bleach activators are effective under mixed soil conditions, especially mixtures of hydrophobic and hydrophilic soils and stains.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: March 5, 2002
    Assignee: The Procter & Gamble Co.
    Inventors: Alan David Willey, Michael Eugene Burns
  • Patent number: 6319288
    Abstract: A blend is disclosed containing formamidinesulfinic acid, an scale-inhibiting agent that can be neutral or acidic, and/or finely divided silica having good flowability to be used for the purpose of reductive bleaching in the paper and textile industries, whereby, in particular, polcarboxylates and polyacrylic acids are employed having a content of about 10% of a polyamide in the form of a copolymer.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: November 20, 2001
    Assignee: Degussa AG
    Inventors: Harald Jakob, Bernd Hopf
  • Patent number: 6287346
    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 fabrics by applying a liquid or gel detergent composition to the fabric and subjecting the fabric to microwaves. This method provides enhanced cleaning and improved stain removal. These cleaning compositions comprise 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 fabrics.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: September 11, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Kofi Ofosu-Asante, Howard David Hutton
  • Patent number: 6270722
    Abstract: Stabilized bromine solutions are prepared by combining a bromine source and a stabilizer to form a mixture, adding an oxidizer to the mixture, and then adding, an alkaline source to adjust the pH of the mixture to at least 13.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: August 7, 2001
    Assignee: Nalco Chemical Company
    Inventors: Shunong Yang, William F. McCoy, Eric J. Allain, Eric R. Myers, Anthony W. Dallmier
  • Patent number: 6251386
    Abstract: An enzymatic antimicrobial composition comprising a haloperoxidase, a hydrogen peroxide source, a halide source, and an ammonium source, in particular an ammonium salt or an aminoalcohol, in which there is a hitherto unknown synergistic effect between the halide and the ammonium source.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: June 26, 2001
    Assignee: Novo Nordisk A/S
    Inventor: Charlotte Johansen
  • Patent number: 6241779
    Abstract: The invention provides a novel composition and method for removing or reducing levels of recalcitrant constituents from an effluent, such as lignin chromophores, AOX species, such as chlorinated phenols, dioxins, dibenzofurans, biphenyls, and high molecular weight material produced in the pulp and paper bleaching operations which includes using a composition comprised of (a) an amount of a source of an oxidant effective for oxidizing and thereby reducing the levels of such constituents and (b) an oxidatively stable oxidant activator having the structure wherein Y1, Y3 and Y4 each represent a bridging group having zero, one, two or three carbon containing nodes for substitution, and Y2 is a bridging group having at least one carbon containing node for substitution, each said node containing a C(R), C(R1)(R2), or a C(R)2 unit and each R substituent is the same or different from the remaining R substituents; M is a transition metal with oxidation states of I, II, III, IV, V, VI, VII or VIII or
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: June 5, 2001
    Assignee: Carnegie Mellon University
    Inventors: Terrence J. Collins, Colin P. Horwitz
  • Patent number: 6228126
    Abstract: Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: May 8, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: A. Levent Cimecioglu, Danielle E. Harkins
  • Patent number: 6217621
    Abstract: Matrix-dyed textiles of cellulose acetate, cellulose triacetate, silk, wool, flax, nylon, acrylic, polyethylene terephthalate, cotton, and rayon are stripped of their dyes in a dye stripping system comprising a reducing agent in an aqueous bath produced by the reaction of a bisulfite with about 0.35% or less of a borohydride by weight of the textile. The borohydride may be added to an aqueous bath already containing the bisulfite and the textile or the borohydride and bisulfite may be mixed in an add tank and the mixture added to the aqueous bath. Chelating agents, sequestering agents, fire retardants, and odor scavengers are not needed. Reclaimed textiles having superior receptivity of a new dye are provided.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: April 17, 2001
    Assignee: Morton International Inc.
    Inventors: Peter Modebelu, Harrie Schoots, Jeremy Ko
  • Patent number: 6171347
    Abstract: A multicomponent kit for coloring and later removing color from fibers is described, which consists of a first component and a second component. The first component includes a composition for oxidative dyeing of hair and the second component includes an aqueous or aqueous-alcoholic composition for reductive removal of color from dyed hair. The composition for reductive removal of color from hair has a pH of from 1.8 to 6 and is in the form of a gel, cream, emulsion, foam or solution. It contains from 1 to 50% by weight of one or more reductones, advantageously ascorbic and/or isoascorbic acid or salts thereof, and, in addition to the reductones, from 0.1 to 10% by weight of one or more thiols or a combination of from 0.1 to 10% by weight of one or more thiols and from 0.001 to 5% by weight of one or more sulfites. It also includes one or more pH adjusting agents and standard cosmetic additive ingredients.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: January 9, 2001
    Assignee: Wella Aktiengesellschaft
    Inventors: Manuela Kunz, Dominique Le Cruer
  • Patent number: 6156077
    Abstract: A hair cosmetic composition contains an oxyalkylenized xanthan gum in combination with at least one component selected from an oxidizing agent, a reducing agent, a film-forming polymer, an oxidation dye or an acid dye.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: December 5, 2000
    Assignee: Kao Corporation
    Inventors: Yutaka Shibata, Kumi Sugino, Jiro Kawase
  • Patent number: 6136205
    Abstract: The invention is a method for preparing a stabilized aqueous alkali or alkaline earth metal hypobromite solution. The method comprises the steps of:a. Mixing an aqueous solution of alkali or alkaline earth metal hypochlorite having from about 5 percent to about 70 percent available halogen as chlorine with a water soluble bromide ion source;b. Allowing the bromide ion source and the alkali or alkaline earth metal hypochlorite to react to form a 0.5 to 70 percent by weight aqueous solution of unstabilized alkali or alkaline earth metal hypobromite;c. Adding to the unstabilized solution of alkali or alkaline earth metal hypobromite an aqueous solution of an alkali metal sulfamate in a quantity to provide a molar ratio of alkali metal sulfamate to alkali or alkaline earth metal hypobromite is from about 0.5 to about 7; and,d. Recovering a stabilized aqueous alkali or alkaline earth metal hypobromite solution.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: October 24, 2000
    Assignee: Nalco Chemical Company
    Inventors: Anthony W. Dallmier, William F. McCoy, Shunong Yang
  • Patent number: 6120554
    Abstract: A process for decolorizing a cellulose textile bearing oxidized vat dye comprising contacting the cellulose textile with an aqueous solution of hydrogen peroxide containing an amount of a hydrogen peroxide catalyst sufficient to oxidize vat dye in the fabric until the dye is decolorized by oxidation. Then the cellulose textile is separated from the aqueous solution. The hydrogen peroxide catalyst can be a water-soluble lower alkyl quaternary amine salt such as a dihydroxypropyltrimethylammonium halide, chlorohydroxypropyltrimethylammonium halide or epoxypropyltrimethylammonium halide, or it can be a transition metal ion such as a cupric or stannous metal ion present in an amount of from 0.1 to 2 ppm. The process is suitable for decolorizing denim bearing vat dyes such as indigo, and is particularly suitable for decolorizing denim scrap.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: September 19, 2000
    Assignee: American Renewable Resources LLC
    Inventors: Robert T. Patton, David Hall
  • Patent number: 6106579
    Abstract: The method for decolorizing fibers includes applying a decolorizing composition according to the invention to dyed fibers and allowing the composition to act on the fibers for a sufficient time to remove dyed color from the dyed fibers. The decolorizing composition for fibers dyed with an oxidation hair dye composition and/or direct-dyeing hair dye compounds contains a combination of one or more .alpha.-oxo-carboxylic acids and/or physiologically compatible .alpha.-oxocarboxylic acid salts with at least one reductone, or with at least one reductone and at least one thiol compound, or with at least one reductone and at least one sulfite compound, or with at least one reductone and at least one thiol compound and at least one sulfite compound. A multi-part kit for repeatedly dyeing and subsequently decolorizing fibers, especially human hair, contains both a dye composition for dyeing the fibers and the above-described composition for reductive decolorizing of the dyed fibers.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: August 22, 2000
    Assignee: Wella Aktiengesellschaft
    Inventors: Manuela Kunz, Dominique Le Cruer, Christel Dousse
  • Patent number: 6063752
    Abstract: Acylated carbohydrates with at least one carboxyalkyl group etherified with the carbohydrate of the following general formulaKH(--O--CHR.sub.1 --(CH.sub.2).sub.p --(COOH or COO.sup.-)).sub.n (--O--CO--R.sub.2).sub.m,wherein KH (carbohydrate) is a monosaccharide, disaccharide, trisaccharide or polysaccharide, and whereinif KH is a monosaccharide, then n=1 to 4 and m=1 to 4 with n+m=2 to 5;if KH is a disaccharide, then n=1 to 7 and m=1 to 7 with n+m=2 to 8;if KH is a trisaccharide, then n=1 to 10 and m=1 to 10 with n+m=2 to 11; andif KH is a polysaccharide, then n=0.2 to 2.8 and m=0.2 to 2.8 with n+m=0.4 to 3 (with polysaccharide referred to the monosaccharide unit of the KH), and whereinR1 is=H or a moiety with 1-9 carbon atoms, in particular an alkyl or acyl moiety, andR2 is a moiety with 1-9 carbon atoms, in particular an alkyl or acyl moiety, and wherein p=0 to 9.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: May 16, 2000
    Assignee: Sudzucker Aktiengesellschaft Mannheim/Ochsenfurt
    Inventors: Sonja Ehrhardt, Alireza Haji Begli, Markwart Kunz
  • Patent number: 6059844
    Abstract: A process is disclosed for bleaching of a substrate which includes adding a molecular oxygen activating system to an aqueous wash liquor and bleaching the substrate with the molecular oxygen activating system in the aqueous wash liquor. Significant substrate cleaning results can be obtained by molecular oxygen obtained from air even in the absence of any usually applied active oxygen ingredients such as perborate or percarbonate.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: May 9, 2000
    Assignee: Lever Brothers Company
    Inventor: Jean Hypolites Koek
  • Patent number: 6056787
    Abstract: Iminodisuccinic acids of the formula ##STR1## the substituents of which have the meaning given in the description, are bleaching regulators in H.sub.2 O.sub.2 bleaching of textile-forming natural plant fibers or silk, wool and their mixtures with synthetics.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: May 2, 2000
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerd Friedrich Renner, Michael Pirkotsch, Klaus Walz, Torsten Groth, Winfried Joentgen
  • Patent number: 6051033
    Abstract: A method of treating wool, wool fibers or animal hair with a proteolytic enzyme and a transglutaminase. The described method results in improved shrink-resistance, handle, appearance, wettability, reduction of felting tendency, increased whiteness, reduction of pilling, improved softness, tensile strength retention, improved stretch, improved burst strength, and improved dyeing characteristics such as dye uptake and dye washfastness. Furthermore, relative to treatments with proteolytic enzymes alone (no transglutaminase), the described method results in reduced weight loss, reduced fiber damage, and improved strength.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: April 18, 2000
    Assignee: Novo Nordisk Brochem North America Inc.
    Inventors: Jason Patrick McDevitt, Jacob Winkler
  • Patent number: 6045591
    Abstract: The invention relates to a process for the two-step direct dyeing of keratin fibres, comprising bleaching the keratin fibres; and applying to the keratin fibres a dye composition comprising at least one partially dissolved basic direct dye and an aqueous medium, wherein the dye composition is ready to use or results from mixing, at the time of use, at least one pulverulent composition (P) comprising at least one basic direct dye and an aqueous composition (A).
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: April 4, 2000
    Assignee: L'Oreal
    Inventor: Christelle Deneulenaere
  • Patent number: 6042615
    Abstract: The invention relates to an indigo-dyed fabric which comprises at least one organopolysiloxane and at least one alkyl polyglycoside.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: March 28, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Peter Habereder, Martina Obenhuber, Michael Geck
  • Patent number: 5980579
    Abstract: A method is provided for reducing the shrinkage of wool comprising the steps of: (a) preparing an aqueous solution comprising an oxidase or a peroxidase; and (b) contacting a wool containing article with said aqueous solution under conditions suitable for reacting said oxidase or peroxidase with said wool.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: November 9, 1999
    Assignee: Genencor International, Inc.
    Inventor: Mee-Young Yoon
  • Patent number: 5972038
    Abstract: The performance of photobleaches such as the zinc phthalocyanines is enhanced by means of alkylene amino/carboxylate or alkylene amino/phosphonate chelants. Thus, sulfonated zinc phthalocyanine plus diethylenetriamine pentaacetate provide enhanced photobleaching of laundered fabrics. Detergent compositions comprising the improved photobleach systems are provided.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: October 26, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Luis Alberto Amestica, Francisco Ramon Figueroa, Jose Andres Rojo
  • Patent number: 5958082
    Abstract: Garment, e.g. a new pair of jeans, made from dyed twill fabric and having localised variations in the colour density of the fabric providing the jeans with a stone-washed or abraded look corresponding to a delta remission value (.DELTA.R) higher than 11, and a reflection of a first area of the jeans fabric of less than 12%, the reflection and .DELTA.R value being determined by a) measuring the reflection of the first and a second area of the fabric at a wavelength of 420 nm using a reflectometer having a measuring diaphragm with a diametrical dimension of 27 mm, the first area being located within the area of the upper half of the zipper cover visibly having the highest colour density (i.e. being relatively more coloured), and the second area being located at least about 5 cm from any stitching present on the jeans, b) expressing the reflection in % related to a white standard (100% reflection), and c) calculating the .DELTA.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: September 28, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Henrik Lund, Lisbeth Kalum
  • Patent number: 5951714
    Abstract: A process for enzymatic discharge printing of the surface of dyed fabric, especially cellulosic fabric such as denim, including an oxidoreductase and enhancing agent system.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: September 14, 1999
    Assignee: Novo Nordisk Biochem North America, Inc.
    Inventors: Gregory K. Hall, Charles W. Stewart, Garrett A. Screws
  • Patent number: 5928380
    Abstract: A method of treating fabrics, garments, or yarns comprising treating undyed fabric, garment, or yarn in an aqueous medium with an effective amount of a haloperoxidase, a halide source, and a hydrogen peroxide source. The treated fabric, garment, or yarn exhibits improved characteristics relative to untreated fabric, garment, or yarn, such as improved shrink-resistance.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: July 27, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Jacob Winkler, Lars Sparre Conrad
  • Patent number: 5928381
    Abstract: A process for simultaneously desizing and bleaching of a sized fabric containing starch or starch derivatives, which process comprises treating the fabric with a bleaching composition and an oxidation stable .alpha.-amylase.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: July 27, 1999
    Assignee: Novo Nordisk A/S
    Inventors: Annette Hanne Toft, Dorthe Marcher, Hanne H.o slashed.st Pedersen, Thomas Erik Nilsson
  • Patent number: 5914003
    Abstract: Cellulose is effectively oxidized with nitrogen dioxide in a hydrofluoroether solvent.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 22, 1999
    Assignee: Mach I, Inc.
    Inventors: Brian M. Kosowski, Bernard M. Kosowski
  • Patent number: 5912407
    Abstract: The invention relates to a process for treatment of cellulosic material, as for example, knitted or woven cotton fabric, comprising the steps of preparing an aqueous enzyme solution comprising pectinase, treating the cellulosic material with an effective amount of the aqueous enzyme solution under alkaline scouring conditions; e.g., pH of 9 or above and a temperature of 50.degree. C. or above, in a low calcium or calcium-free environment, yielding a modification of the cellulosic material such that exhibits an enhanced respond to a subsequent chemical treatment.
    Type: Grant
    Filed: November 25, 1997
    Date of Patent: June 15, 1999
    Assignee: Novo Nordisk Biochem North America, Inc.
    Inventors: Carl Andrew Miller, Steen Skjold Jorgensen, Eric W. Otto, Niels K. Lange, Brian Condon, Jiyin Liu
  • Patent number: 5908472
    Abstract: The present invention relates to a process for providing an abraded look with a reduced strength loss in dyed fabric comprising (a) contacting, in an aqueous medium, a dyed fabric with a cellulase in a concentration corresponding to 0.01-250 .mu.g of enzyme protein per g of fabric; and (b) simultaneously or subsequently treating the fabric with a phenol oxidizing enzyme and an enhancing agent.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: June 1, 1999
    Assignee: Novo Nordisk A/S
    Inventor: Thomas Vollmond
  • Patent number: 5882355
    Abstract: A process is disclosed for cleaning of a substrate, comprising the steps of (1) adding a molecular oxygen activating system (as defined herein) to an aqueous wash liquor, containing a sufficient amount of molecular oxygen for obtaining observable cleaning, and (2) cleaning the substrate with the thus-formed wash liquor. When using said process, significant substrate cleaning results could even be obtained in the absence of any usually applied active oxygen ingredient such as perborate or percarbonate.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Jean Hypolites Koek
  • Patent number: 5853428
    Abstract: The invention provides a novel composition for bleaching cellulose based materials, such as wood pulp and paper comprising:(a) an oxidatively stable bleach activator having the structure ##STR1## wherein Y.sub.1, Y.sub.3 and Y.sub.4 each represents a bridging group, i.e., zero, one, two or three carbon containing nodes for substitution, while Y.sub.2 is a bridging group of at least one carbon containing node for substitution, each said node containing a C(R), C(R.sub.1) (R.sub.2), or a C(R).sub.2 unit and each R substituent is the same or different from the remaining R substituents and is selected from the group consisting of H, alkyl, cycloalkyl, cycloalkenyl, alkenyl, aryl, alkynyl, alkylaryl, halogen, alkoxy, phenoxy, CH.sub.2 CF.sub.3, CF.sub.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: December 29, 1998
    Assignee: Carnegie Mellon University
    Inventors: Terrence J. Collins, Colin P. Horwitz
  • Patent number: 5851233
    Abstract: The invention relates to a process for providing a bleached look in the color density of the surface of dyed fabric, especialy cellulosic fabric such as denim, comprising use of a phenol oxidizing enzyme such as a peroxidase or a laccase, a hydrogen peroxide source and a phenothiazine or phenoxazine enhancing agent represented by formula (I).
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: December 22, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Anders Hjelholt Pedersen, Jesper Vallentin Kierulff
  • Patent number: 5843191
    Abstract: The present invention relates to the bleaching of fabrics with a hypochlorite-containing composition. The well-known prejudice against using hypochlorite bleaches to bleach synthetic fabrics because of the resulting fabric yellowing is addressed by the presence of silicate salts in the bleaching medium.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: December 1, 1998
    Assignee: Procter & Gamble
    Inventor: Andrea Agostini
  • Patent number: 5843617
    Abstract: An imaging method is provided that includes a tetraarylpolymethine dye, and bleaching this dye by bringing the dye into contact with a 4-alkyl or 4-unsubstituted 1,4-dihydropyridine derivative.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: December 1, 1998
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: Ranjan C. Patel, Mark R. I. Chambers, Dian E. Stevenson, Robert J. D. Nairne, Gregory L. Zwaldo
  • Patent number: 5817155
    Abstract: An emulsion for hair treatment is provided which is characterized by the following: the formulation (I) is composed of a W/O type emulsion, which allows the main agent to be stable, and contains preferably an oil soluble polymer compound for the emulsifier; the formulation (I), upon being mixed with formulation (II), can easily undergo demulsification and a phase inversion into an O/W type emulsion; and the emulsion has adequate viscosity to prevent dripping from the hair and a superior dyeing capability. Also, 2-formulation type oxidation hair dye with an excellent hair dyeing effect is provided by adding isostearyl alcohol.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: October 6, 1998
    Assignee: Shiseido Co., Ltd.
    Inventors: Masaaki Yasuda, Yasuhiro Arai, Fumiaki Matsuzaki, Toshio Yanaki, Hideo Nakajima, Michihiro Yamaguchi, Kimio Ohno
  • Patent number: 5795487
    Abstract: The invention is a method for preparing a stabilized aqueous alkali or alkaline earth metal hypobromite solution. The method comprises the steps of:a. Mixing an aqueous solution of alkali or alkaline earth metal hypochlorite having from about 5 percent to about 70 percent available halogen as chlorine with a water soluble bromide ion source;b. Allowing the bromide ion source and the alkali or alkaline earth metal hypochlorite to react to form a 0.5 to 70 percent by weight aqueous solution of unstabilized alkali or alkaline earth metal hypobromite;c. Adding to the unstabilized solution of alkali or alkaline earth metal hypobromite an aqueous solution of an alkali metal sulfamate in a quantity to provide a molar ratio of alkali metal sulfamate to alkali or alkaline earth metal hypobromite is from about 0.5 to about 7; and,d. Recovering a stabilized aqueous alkali or alkaline earth metal hypobromite solution.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: August 18, 1998
    Assignee: Nalco Chemical Company
    Inventors: Anthony W. Dallmier, William F. McCoy
  • Patent number: 5782933
    Abstract: Method is provided for reducing the color of dyed hair by contacting the dyed hair with a dilute aqueous composition of ascorbic acid, isoascorbic acid or mixtures and maintaining the contact until the desired reduction is achieved.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: July 21, 1998
    Assignee: Bristol-Myers Squibb Company
    Inventors: Gabriela Wis-Surel, Alice Mayer, Irina Tsivkin
  • Patent number: 5780641
    Abstract: Method for stabilizing halogenated hydrantoins, comprising mixing the hydantoin with dry calcium hydroxide.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: July 14, 1998
    Assignee: Bromine Compounds Ltd.
    Inventors: Moshe Yerushalmi, Zvi Vainberger, Shimon Herbet, James Rasco
  • Patent number: 5755991
    Abstract: Novel bleaches, a method for bleaching substrates using these materials and bleaching compositions containing same are reported. The bleaches are N-acyloxaziridines. Substrates such as fabrics may be bleached in an aqueous solution containing the N-acyloxaziridines.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: May 26, 1998
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventor: Naresh Dhirajlal Ghatlia
  • Patent number: 5752981
    Abstract: Finishing agent for the finishing treatment of textile fiber materials of natural origin and/or of regenerated cellulose and/or of synthetic fibers, containing i) a fine-grained, inorganic abrasive, ii) an anionic or non-ionic, low-foaming wetting agent, and iii) a non-ionic carrier, and the use of this finishing agent in the finishing treatment of textile fiber materials, whereby special surface effects are obtained.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: May 19, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Saverio Fornelli
  • Patent number: 5752980
    Abstract: The present invention relates to a process for providing a bleached look in the color density of the surface of dyed fabric, especially cellulosic fabric such as denim, comprising use of a phenol oxidizing enzyme such as a peroxidase or a laccase, a hydrogen peroxide source and an enhancing agent represented by formula (I).
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: May 19, 1998
    Assignee: Novo Nordisk A/S
    Inventors: Anders Hjelholt Pedersen, Jesper Vallentin Kierulff
  • Patent number: 5749923
    Abstract: A method for chlorine-free bleaching of denim textile material composed of warp yarn which is dyed with at least one of (a) indigo dye and at least one sulfur dye, and (b) at least one derivative of indigo dye and at least one sulfur dye, and weft yarn which is undyed and substantially white and which continues to be substantially white after bleaching to provide a denim textile material having a stylish gray cast.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: May 12, 1998
    Assignee: Degussa Aktiengellschaft
    Inventors: Vinzenz Olip, Norbert Steiner
  • Patent number: 5730759
    Abstract: The use of substituted phthalocyaines for removing stains from fabrics which comprises treating the stained fabrics with an aqueous composition comprising a phthalocyanine in which at least one of the peripheral carbon atoms in the 1-16 position of the phthalocyanine nucleus (M.sub.k Pc) of Formula (1), ##STR1## wherein: M is selected from H, metal, halometal, oxymetal and hydroxymetal; andk is the inverse of 1/2 the valency of M;is linked via an oxygen atom to an aromatic radical and the remaining peripheral carbon atoms are unsubstituted or substituted by any combination of atoms or groups and sulphonated derivatives thereof provided that the phthalocyanine absorbs electromagnetic radiation at a wavelength from 650 nm to 800 nm.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: March 24, 1998
    Assignee: Zeneca Limited
    Inventors: Dean Thetford, Peter Gregory
  • Patent number: 5713962
    Abstract: A process of bleaching fabrics is disclosed where a liquid or pasty composition comprising acetyl triethyl citrate and a source of hydrogen peroxide is applied to fabrics before they are immersed in an aqueous wash liquor.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: February 3, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Stefano Scialla, Raffaele Scoccianti, Andrea Soddu, Alan David Willey