Chemical Patents (Class 8/107)
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Patent number: 6663677Abstract: 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: GrantFiled: September 17, 2001Date of Patent: December 16, 2003Assignee: Rohm and Haas CompanyInventors: Harrie Peter Schoots, Lester Franklin Stevens, Jr.
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Patent number: 6645254Abstract: 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: GrantFiled: March 26, 2001Date of Patent: November 11, 2003Assignee: Takasago International CorporationInventors: Takashi Aida, Hiroyuki Matsuda, Tsunehide Yoneyama, Toshimitsu Hagiwara
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Patent number: 6599326Abstract: 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: GrantFiled: January 12, 2000Date of Patent: July 29, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Raymond Seltzer, David Devore, Glen T. Cunkle, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Jean-Pierre Wolf, Randall B. Nelson
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Patent number: 6569354Abstract: 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: GrantFiled: December 19, 2000Date of Patent: May 27, 2003Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventor: Ronald Hage
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Patent number: 6569209Abstract: 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: GrantFiled: February 27, 2001Date of Patent: May 27, 2003Assignee: The Procter & Gamble CompanyInventors: Jiping Wang, Elizabeth Ann Eggert
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Patent number: 6451063Abstract: 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: GrantFiled: September 25, 1996Date of Patent: September 17, 2002Assignee: Genencor International, Inc.Inventors: Kathleen A. Clarkson, Barbara Swanson, Deborah Winetzky
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Patent number: 6409770Abstract: 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: GrantFiled: December 11, 1998Date of Patent: June 25, 2002Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Albrecht Weiss, Maria Grothus, Achim Richert
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Patent number: 6352562Abstract: 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: GrantFiled: November 14, 2000Date of Patent: March 5, 2002Assignee: The Procter & Gamble Co.Inventors: Alan David Willey, Michael Eugene Burns
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Patent number: 6319288Abstract: 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: GrantFiled: May 19, 1999Date of Patent: November 20, 2001Assignee: Degussa AGInventors: Harald Jakob, Bernd Hopf
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Patent number: 6287346Abstract: 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: GrantFiled: January 25, 1999Date of Patent: September 11, 2001Assignee: The Procter & Gamble CompanyInventors: Kofi Ofosu-Asante, Howard David Hutton
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Patent number: 6270722Abstract: 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: GrantFiled: March 31, 1999Date of Patent: August 7, 2001Assignee: Nalco Chemical CompanyInventors: Shunong Yang, William F. McCoy, Eric J. Allain, Eric R. Myers, Anthony W. Dallmier
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Patent number: 6251386Abstract: 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: GrantFiled: August 12, 1998Date of Patent: June 26, 2001Assignee: Novo Nordisk A/SInventor: Charlotte Johansen
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Patent number: 6241779Abstract: 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 orType: GrantFiled: May 4, 2000Date of Patent: June 5, 2001Assignee: Carnegie Mellon UniversityInventors: Terrence J. Collins, Colin P. Horwitz
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Patent number: 6228126Abstract: 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: GrantFiled: August 17, 1999Date of Patent: May 8, 2001Assignee: National Starch and Chemical Investment Holding CorporationInventors: A. Levent Cimecioglu, Danielle E. Harkins
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Patent number: 6217621Abstract: 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: GrantFiled: July 9, 1999Date of Patent: April 17, 2001Assignee: Morton International Inc.Inventors: Peter Modebelu, Harrie Schoots, Jeremy Ko
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Patent number: 6171347Abstract: 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: GrantFiled: July 1, 1998Date of Patent: January 9, 2001Assignee: Wella AktiengesellschaftInventors: Manuela Kunz, Dominique Le Cruer
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Patent number: 6156077Abstract: 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: GrantFiled: December 23, 1998Date of Patent: December 5, 2000Assignee: Kao CorporationInventors: Yutaka Shibata, Kumi Sugino, Jiro Kawase
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Patent number: 6136205Abstract: 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: GrantFiled: May 5, 1999Date of Patent: October 24, 2000Assignee: Nalco Chemical CompanyInventors: Anthony W. Dallmier, William F. McCoy, Shunong Yang
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Patent number: 6120554Abstract: 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: GrantFiled: February 2, 1998Date of Patent: September 19, 2000Assignee: American Renewable Resources LLCInventors: Robert T. Patton, David Hall
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Patent number: 6106579Abstract: 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: GrantFiled: December 11, 1998Date of Patent: August 22, 2000Assignee: Wella AktiengesellschaftInventors: Manuela Kunz, Dominique Le Cruer, Christel Dousse
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Patent number: 6063752Abstract: 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: GrantFiled: June 18, 1997Date of Patent: May 16, 2000Assignee: Sudzucker Aktiengesellschaft Mannheim/OchsenfurtInventors: Sonja Ehrhardt, Alireza Haji Begli, Markwart Kunz
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Patent number: 6059844Abstract: 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: GrantFiled: November 5, 1998Date of Patent: May 9, 2000Assignee: Lever Brothers CompanyInventor: Jean Hypolites Koek
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Patent number: 6056787Abstract: 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: GrantFiled: September 19, 1997Date of Patent: May 2, 2000Assignee: Bayer AktiengesellschaftInventors: Gerd Friedrich Renner, Michael Pirkotsch, Klaus Walz, Torsten Groth, Winfried Joentgen
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Patent number: 6051033Abstract: 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: GrantFiled: September 28, 1998Date of Patent: April 18, 2000Assignee: Novo Nordisk Brochem North America Inc.Inventors: Jason Patrick McDevitt, Jacob Winkler
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Patent number: 6045591Abstract: 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: GrantFiled: December 7, 1998Date of Patent: April 4, 2000Assignee: L'OrealInventor: Christelle Deneulenaere
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Patent number: 6042615Abstract: The invention relates to an indigo-dyed fabric which comprises at least one organopolysiloxane and at least one alkyl polyglycoside.Type: GrantFiled: May 27, 1998Date of Patent: March 28, 2000Assignee: Wacker-Chemie GmbHInventors: Peter Habereder, Martina Obenhuber, Michael Geck
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Patent number: 5980579Abstract: 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: GrantFiled: December 17, 1996Date of Patent: November 9, 1999Assignee: Genencor International, Inc.Inventor: Mee-Young Yoon
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Patent number: 5972038Abstract: 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: GrantFiled: February 26, 1996Date of Patent: October 26, 1999Assignee: The Procter & Gamble CompanyInventors: Luis Alberto Amestica, Francisco Ramon Figueroa, Jose Andres Rojo
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Patent number: 5958082Abstract: 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: GrantFiled: June 10, 1997Date of Patent: September 28, 1999Assignee: Novo Nordisk A/SInventors: Henrik Lund, Lisbeth Kalum
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Patent number: 5951714Abstract: 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: GrantFiled: March 26, 1998Date of Patent: September 14, 1999Assignee: Novo Nordisk Biochem North America, Inc.Inventors: Gregory K. Hall, Charles W. Stewart, Garrett A. Screws
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Patent number: 5928380Abstract: 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: GrantFiled: June 8, 1998Date of Patent: July 27, 1999Assignee: Novo Nordisk A/SInventors: Jacob Winkler, Lars Sparre Conrad
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Patent number: 5928381Abstract: 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: GrantFiled: August 22, 1996Date of Patent: July 27, 1999Assignee: Novo Nordisk A/SInventors: Annette Hanne Toft, Dorthe Marcher, Hanne H.o slashed.st Pedersen, Thomas Erik Nilsson
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Patent number: 5914003Abstract: Cellulose is effectively oxidized with nitrogen dioxide in a hydrofluoroether solvent.Type: GrantFiled: June 9, 1998Date of Patent: June 22, 1999Assignee: Mach I, Inc.Inventors: Brian M. Kosowski, Bernard M. Kosowski
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Patent number: 5912407Abstract: 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: GrantFiled: November 25, 1997Date of Patent: June 15, 1999Assignee: Novo Nordisk Biochem North America, Inc.Inventors: Carl Andrew Miller, Steen Skjold Jorgensen, Eric W. Otto, Niels K. Lange, Brian Condon, Jiyin Liu
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Patent number: 5908472Abstract: 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: GrantFiled: May 14, 1998Date of Patent: June 1, 1999Assignee: Novo Nordisk A/SInventor: Thomas Vollmond
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Patent number: 5882355Abstract: 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: GrantFiled: April 7, 1997Date of Patent: March 16, 1999Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventor: Jean Hypolites Koek
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Patent number: 5853428Abstract: 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: GrantFiled: February 24, 1997Date of Patent: December 29, 1998Assignee: Carnegie Mellon UniversityInventors: Terrence J. Collins, Colin P. Horwitz
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Patent number: 5851233Abstract: 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: GrantFiled: April 25, 1997Date of Patent: December 22, 1998Assignee: Novo Nordisk A/SInventors: Anders Hjelholt Pedersen, Jesper Vallentin Kierulff
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Patent number: 5843191Abstract: 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: GrantFiled: November 17, 1997Date of Patent: December 1, 1998Assignee: Procter & GambleInventor: Andrea Agostini
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Patent number: 5843617Abstract: 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: GrantFiled: April 22, 1997Date of Patent: December 1, 1998Assignee: Minnesota Mining & Manufacturing CompanyInventors: Ranjan C. Patel, Mark R. I. Chambers, Dian E. Stevenson, Robert J. D. Nairne, Gregory L. Zwaldo
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Patent number: 5817155Abstract: 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: GrantFiled: December 6, 1996Date of Patent: October 6, 1998Assignee: Shiseido Co., Ltd.Inventors: Masaaki Yasuda, Yasuhiro Arai, Fumiaki Matsuzaki, Toshio Yanaki, Hideo Nakajima, Michihiro Yamaguchi, Kimio Ohno
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Patent number: 5795487Abstract: 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: GrantFiled: January 3, 1997Date of Patent: August 18, 1998Assignee: Nalco Chemical CompanyInventors: Anthony W. Dallmier, William F. McCoy
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Patent number: 5782933Abstract: 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: GrantFiled: April 30, 1997Date of Patent: July 21, 1998Assignee: Bristol-Myers Squibb CompanyInventors: Gabriela Wis-Surel, Alice Mayer, Irina Tsivkin
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Patent number: 5780641Abstract: Method for stabilizing halogenated hydrantoins, comprising mixing the hydantoin with dry calcium hydroxide.Type: GrantFiled: December 19, 1996Date of Patent: July 14, 1998Assignee: Bromine Compounds Ltd.Inventors: Moshe Yerushalmi, Zvi Vainberger, Shimon Herbet, James Rasco
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Patent number: 5755991Abstract: 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: GrantFiled: April 3, 1997Date of Patent: May 26, 1998Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventor: Naresh Dhirajlal Ghatlia
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Patent number: 5752981Abstract: 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: GrantFiled: December 9, 1996Date of Patent: May 19, 1998Assignee: Clariant Finance (BVI) LimitedInventor: Saverio Fornelli
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Patent number: 5752980Abstract: 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: GrantFiled: February 4, 1997Date of Patent: May 19, 1998Assignee: Novo Nordisk A/SInventors: Anders Hjelholt Pedersen, Jesper Vallentin Kierulff
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Patent number: 5749923Abstract: 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: GrantFiled: May 24, 1996Date of Patent: May 12, 1998Assignee: Degussa AktiengellschaftInventors: Vinzenz Olip, Norbert Steiner
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Patent number: 5730759Abstract: 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: GrantFiled: October 25, 1995Date of Patent: March 24, 1998Assignee: Zeneca LimitedInventors: Dean Thetford, Peter Gregory
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Patent number: 5713962Abstract: 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: GrantFiled: February 20, 1996Date of Patent: February 3, 1998Assignee: The Procter & Gamble CompanyInventors: Stefano Scialla, Raffaele Scoccianti, Andrea Soddu, Alan David Willey