With Organic Material Patents (Class 252/186.29)
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Patent number: 10363210Abstract: Described herein are oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with particular co-polymers as additional excipients; including some embodiments which further comprise a calcium abrasive.Type: GrantFiled: October 3, 2017Date of Patent: July 30, 2019Assignee: Colgate-Palmolive CompanyInventors: Suman Chopra, Dennis Ontumi, Prakasarao Mandadi, Venda Porter Maloney
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Patent number: 9782339Abstract: Described herein are oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with particular co-polymers as additional excipients; including some embodiments which further comprise a calcium abrasive.Type: GrantFiled: October 14, 2016Date of Patent: October 10, 2017Assignee: Colgate-Palmolive CompanyInventors: Suman Chopra, Dennis Ontumi, Prakasarao Mandadi, Venda Maloney
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Patent number: 9695125Abstract: The present invention provides a method for synthesizing cationic bleach activators via a single-bath reaction, comprising steps of: separately dissolving 4-chloromethylbenoyl chloride and lactam in its respective solvent, adding an acid-binding agent to the lactam solution, next adding dropwisely 4-chloromethylbenoyl chloride solution into the lactam/acid binding-agent solution, and finally adding tertiary amine to the solution above to make a reaction solution, which is further treated with mixing and refluxing. The washed and dried final product is TBLC cationic bleach activator. The method of the present invention greatly simplifies the synthesizing process and lowers the stringency of reaction conditions for preparing cationic bleach activators (TBLC). At the same time, the present method produces TBLC cationic bleach activators with high yields, making it a suitable option for industrial production of these bleach activators.Type: GrantFiled: November 30, 2015Date of Patent: July 4, 2017Assignee: Jiangnan UniversityInventors: Changhai Xu, Chang Sun, Jinmei Du, Shuangshuang Cui, Jingjing Zhang, Jiao Yu, Zhiyong Huang, Wenjuan Tang, Yan Zhang, Wenhua Chen
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Patent number: 9657254Abstract: A composition for removing paint, ink or resin from an article comprising a first alkyl glycoside surfactant, a second alkyl glycoside surfactant, sodium hydroxide, and citric acid. Optionally, the sodium hydroxide and citric acid may be replaced by sodium citrate. Alternatively, the composition comprises an alkyl glycoside surfactant, an alkyl polyethylene glycol ether surfactant and a sodium citrate. The composition rapidly and efficiently removes paint, ink and resin from brushes, rollers, tools and equipment by dispersing the paint, ink and resin and has very limited environmental impact. The removed paint, ink or resin sediments and collects on the bottom of the container. The sedimentation can be sped up with the addition of a flocculent. The top layer of the solution may be removed and reused, while the bottom paint, ink or resin layer can be dried and disposed of as solid waste.Type: GrantFiled: December 29, 2015Date of Patent: May 23, 2017Inventor: Kim Landeweer
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Patent number: 9498425Abstract: Described herein are oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with particular co-polymers as additional excipients; including some embodiments which further comprise a calcium abrasive.Type: GrantFiled: September 29, 2015Date of Patent: November 22, 2016Assignee: COLGATE-PALMOLIVE COMPANYInventors: Suman Chopra, Dennis Ontumi, Prakasarao Mandadi, Venda Maloney
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Patent number: 9222919Abstract: A process to monitor unwanted formation of a polymer having internal mechanical strain is disclosed. The acoustic emission generated by polymer formation is detected by one or more acoustic sensors attached to a piece of equipment.Type: GrantFiled: April 5, 2013Date of Patent: December 29, 2015Assignee: TOTAL RESEARCH & TECHNOLOGY FELUYInventors: Jean-Pierre Thoret Bauchet, Gustav Alcuri
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Patent number: 9174070Abstract: Oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with an ethylene oxide-propylene oxide block copolymer. Some embodiments further comprise a calcium abrasive, e.g. calcium pyrophosphate or calcium carbonate, and some may have less than 3% water.Type: GrantFiled: June 2, 2011Date of Patent: November 3, 2015Assignee: Colgate-Palmolive CompanyInventors: Suman Chopra, Prakasarao Mandadi, Venda Porter Maloney, Dennis Ontumi
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Publication number: 20150086647Abstract: Stabilized peroxygen containing compositions are disclosed, both in thickened viscous form and in dry form. The compositions contain newly synthesized calcium sulfate crystals that function as a thickener and stabilizing agent against metal-catalyzed decomposition. The invention discloses a composition comprising 0.5 wt % to 50% wt of hydrogen peroxide. 2.0 wt % to 80.0% wt of newly synthesized calcium sulfate crystals, being of individual sheet or needle shape, and water, said composition having a viscosity of 200 cP to 20,000 cP. The invention further provides a process for making same, comprising the reaction of a water soluble calcium containing salt with sulfuric acid or a salt thereof in an aqueous hydrogen peroxide solution at a reaction temperature of up to 80 C in a mixing apparatus, followed by a concentration step in order to thicken into a stable viscous dispersion or paste containing at least 2 wt % and preferably 10 wt % to 15 wt % of CaSO4.Type: ApplicationFiled: May 13, 2013Publication date: March 26, 2015Applicant: CREACHEM SAInventors: Frederic Lakaye, Wim De Windt
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Patent number: 8801962Abstract: A salt of an acidic chelating agent including an amine functionality, the salt comprising at least 0.25 mole of an alkaline earth metal per mole of acidic protons provided by the chelating agent; wherein the acidic chelating agent is not ethylene diamine disuccinic acid.Type: GrantFiled: January 21, 2010Date of Patent: August 12, 2014Assignee: Innospec LimitedInventors: Matthew Robert Giles, Nicholas John Dixon
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Publication number: 20140005090Abstract: The present invention is directed to stabilized surfactant containing solutions, stabilized or inhibited against oxidative attack, comprising an amphiphilic antioxidant component.Type: ApplicationFiled: March 8, 2012Publication date: January 2, 2014Inventors: David J. Bonislawski, David C. Lovetro, Lauren Schneidewind
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Patent number: 8603923Abstract: This invention relates to a dipping solution used in a process for producing a siliceous film. The present invention provides a dipping solution and a siliceous film-production process employing the solution. The dipping solution enables to form a homogeneous siliceous film even in concave portions of a substrate having concave portions and convex portions. The substrate is coated with a polysilazane composition, and then dipped in the solution before fire. The dipping solution comprises hydrogen peroxide, a foam-deposit inhibitor, and a solvent.Type: GrantFiled: June 18, 2013Date of Patent: December 10, 2013Inventor: Masanobu Hayashi
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Patent number: 8579544Abstract: A method for the combined chemical oxidation/assisted bioremediation of contaminated materials, comprising contacting a contaminated material with at least one metal chelate and at least one peroxide compound.Type: GrantFiled: October 18, 2010Date of Patent: November 12, 2013Assignee: SOLVAY (Societe Anonyme)Inventors: Noel Boulos, Alastair McNeillie, Jason Muessig
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Publication number: 20130281353Abstract: The present invention relates to the use of selected metal complex compounds and ligands as oxidation catalysts as well as to a process for removing stains and soil on textiles and hard surfaces. The metal complex compounds have hydrazide ligands, preferably with electron withdrawing groups in the phenyl ring adjacent to the acyl group. Further aspects of the invention are formulations comprising such metal complex compounds, novel metal complex compounds and novel ligands.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Barbara Winkler, Hauke Rohwer, Marie-Josee Dubs, Menno Hazenkamp, Kai Eichin, Albert Schneider
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Publication number: 20130117941Abstract: The present invention relates to the use of a composition comprising specific a-amino-ketones, H2O2, a H2O2 precursor or a peracid and optionally an activator as a bleaching mixture for textile materials or dishes either manually or in an automatic washing machine or dish washer. Further aspects of the invention are the composition comprising specific a-aminoketones and H2O2, a H2O2 precursor or a peracid and a process for bleaching of stains or of soiling on textile materials or dishes in the context of a washing process either manually or in an automatic washing machine or dish washer. Also aspects of the invention are detergent formulations comprising such a composition and novel compounds.Type: ApplicationFiled: June 21, 2011Publication date: May 16, 2013Applicant: BASF SEInventors: Markus Frey, Hauke Rohwer, Frédérique Wendeborn, Menno Hazenkamp
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Patent number: 8404628Abstract: A method is provided for spray bleaching cellulosic fabrics. A bleaching composition comprises a wetter, hydrogen peroxide, a caustic, a stabilizer, an optical brightener, and water. The bleaching composition is sprayed on at least one surface of the cellulosic fabric, subjected to steam to fix the bleaching composition to the fabric, and rinsed to remove any residual bleaching composition.Type: GrantFiled: April 11, 2012Date of Patent: March 26, 2013Assignee: HBI Branded Apparel Enterprises, LLCInventor: Ruth E. May
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Publication number: 20120288570Abstract: A hydrogen peroxide composition comprises hydrogen peroxide, a stabilizer system comprising a colloidal stannate, at least one acidifying agent or a salt thereof selected from the group consisting of sulfur-containing acidifying agents, nitric acid, and mixtures and salts thereof. Optionally, the hydrogen peroxide composition comprises an organic phosphonic acid or a salt thereof, such as amino-phosphonate, and/or a free radical scavenger, such as salicylic acid. A cleaning formulation comprises the hydrogen peroxide composition, a pH adjusting agent, and optionally other additives, such as surfactants. The cleaning formulation may be made by mixing the hydrogen peroxide or a precursor thereof, water, colloidal stannate, and at least one acidifying agent, and optionally, adjusting the pH to achieve an alkaline pH.Type: ApplicationFiled: December 21, 2010Publication date: November 15, 2012Applicant: Arkema, Inc.Inventors: Shui-Ping Zhu, Stephen W. Carson, Keith R. Genco
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Publication number: 20120193575Abstract: The present invention relates to compositions stabilized surfactant-oxidant mixtures, and methods of making and using them. For example, in some embodiments the present invention relates to adding a plant-derived surfactant to stabilize an oxidant in a liquid.Type: ApplicationFiled: October 13, 2010Publication date: August 2, 2012Applicant: VeruTEK, Inc.Inventors: George E. Hoag, John B. Collins
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Publication number: 20120104314Abstract: Layered particles that contain a source of hydrogen peroxide, a binder material, and a bleach activator are disclosed. The disclosed layered particles have improved properties and are useful, for example, for incorporation into granular detergents. A method of improving the stability of a source of hydrogen peroxide is also disclosed.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Inventors: Nigel Patrick Somerville Roberts, David James Parmley, Jerome Macaisa Castro, Vincenzo Guida, Paul R. Mort, III
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Publication number: 20120068113Abstract: A salt of an acidic chelating agent including an amine functionality, the salt comprising at least 0.25 mole of an alkaline earth metal per mole of acidic protons provided by the chelating agent; wherein the acidic chelating agent is not ethylene diamine disuccinic acid.Type: ApplicationFiled: January 21, 2010Publication date: March 22, 2012Applicant: Innospec LimitedInventors: Matthew Robert Giles, Nicholas John Dixon
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Patent number: 8092689Abstract: A method of reducing styrene emissions in aqueous cured-in-place pipe closed molding processes and other aqueous environments using a styrene reduction agent. The reduction agent generally comprises a calibrated mixture of salts including sodium chloride plus three persulfate salts: ammonium (APS), potassium (KPS), and sodium (NPS). These ingredients are combined in powder form and are compressed into soluble capsules containing calibrated amounts of the mixture. The capsule(s) may be prescribed through the use of software. Capsule(s) are added to the cure water prior to starting the boiler equipment for the Cured-In-Place Pipe process in order to reduce the residual monomer content in either process or waste streams.Type: GrantFiled: September 27, 2010Date of Patent: January 10, 2012Inventor: Michel Gosselin
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Patent number: 8021609Abstract: A highly stabilized hydrogen peroxide useful for chemical sterilization of packaging materials in high-speed aseptic packaging plants.Type: GrantFiled: March 19, 2004Date of Patent: September 20, 2011Assignee: Solvay Chemicals GmbHInventors: Werner Doetsch, Otmar Woost
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Patent number: 7892448Abstract: A styrene reduction agent that effectively and economically reduces styrene emissions in Cured-In-Place Pipe, closed molding processes. The reduction agent generally comprises a calibrated mixture of salts including sodium chloride plus three persulfate salts: ammonium (APS), potassium (KPS), and sodium (NPS). These ingredients are combined in powder form and are compressed into soluble capsules containing calibrated amounts of the mixture. The capsule(s) may be prescribed through the use of software. Capsule(s) are added to the cure water prior to starting the boiler equipment for the Cured-In-Place Pipe process in order to reduce the residual monomer content in either process or waste streams.Type: GrantFiled: May 25, 2006Date of Patent: February 22, 2011Inventor: Michel Gosselin
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Publication number: 20110009305Abstract: Layered particles that contain a source of hydrogen peroxide, a binder material, and a bleach activator and a method of improving the stability of a source of hydrogen peroxide. The layered particles can be incorporated into granular detergents.Type: ApplicationFiled: April 27, 2010Publication date: January 13, 2011Inventors: Nigel Patrick Somerville Roberts, Alan Thomas Brooker, David James Parmley, Victor Stuar Reid
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Patent number: 7820069Abstract: A combination of a styrene reduction agent and a catalyst that effectively and economically reduces styrene emissions in Cured-In-Place Pipe, closed molding processes. The reduction agent generally comprises a calibrated mixture of salts including sodium chloride plus three persulfate salts: ammonium (APS), potassium (KPS), and sodium (NPS). These ingredients are combined in powder form and are compressed into soluble capsules containing calibrated amounts of the mixture. The capsule(s) may be prescribed through the use of software. The catalyst is hydrogen peroxide (H2O2). A calibrated amount of the styrene reduction agent capsule(s) are added to the cure water prior to starting the boiler equipment for the Cured-In-Place Pipe process, and this is followed by a calibrated amount of the H2O2 catalyst in order to reduce the residual monomer content in either process or waste streams.Type: GrantFiled: July 16, 2009Date of Patent: October 26, 2010Inventor: Michael Gosselin
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Publication number: 20100140545Abstract: A composition is provided for spray bleaching cellulosic fabrics. The composition comprises a wetter, hydrogen peroxide, a caustic, a stabilizer, an optical brightener, and water. When the composition is sprayed onto the surfaces of the cellulosic fabric, it achieves penetration into the fabric so that a uniform whiteness is achieved throughout the fabric.Type: ApplicationFiled: December 8, 2008Publication date: June 10, 2010Inventor: Ruth E. May
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Patent number: 7534367Abstract: A method of treating a peroxygen compound (e.g., potassium monopersulfate) for use in applications where controlled release rate, exposure to incompatible compounds, and/or moisture is presented. The method incorporates coating the peroxygen compound with one or more of the following polymers: 1) chitin/chitosan, 2) carboxylate/sulfonate copolymer or tertiary polymer, and 3) carboxylate polymer selected from polymaleic acid, polyepoxysuccinic acid and/or phosphinocarboxylate polymers. Optionally, the peroxygen compound is also coated with an inorganic salt layer and a silicate layer. Potassium monopersulfate coated with an organic polymer is useful in reduced allergenic formulations and as an anti-caking agent. When the organic polymer is a polysaccharide, the coated potassium monopersulfate is also effective for shock treatment of water systems (e.g., pools). The oxidizing composition prepared with this method has a prolonged shelf life while demonstrating good solubility during use.Type: GrantFiled: June 28, 2004Date of Patent: May 19, 2009Assignee: Truox, Inc.Inventor: Perry L. Martin
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Patent number: 7431775Abstract: A stabilized basic aqueous liquid detergent composition is disclosed. The composition comprises hydrogen peroxide, a hydrogen peroxide stabilizer or a mixture of hydrogen peroxide stabilizers, an anionic surfactant or mixture of anionic surfactants, a non-ionic surfactant or mixture of anionic surfactants, and a builder or a mixture of builders. The composition maintains a homogeneous single phase, maintains active oxygen level, and gives a high level of cleaning performance.Type: GrantFiled: October 27, 2006Date of Patent: October 7, 2008Assignee: Arkema Inc.Inventors: Xue Wang, Keith R. Genco, Donn Rubingh
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Patent number: 7364718Abstract: Hydrogen peroxide is produced by reacting hydrogen and oxygen in the presence of a noble metal catalyst in a liquid reaction medium, the reaction being performed in the presence of a sulfuric acid alkyl ester. In the presence of sulfuric acid alkyl esters the noble metal catalyst exhibits a high and lasting activity for the formation of hydrogen peroxide with an elevated selectivity of hydrogen peroxide formation relative to the hydrogen used. Solutions of hydrogen peroxide in methanol obtainable by the process are suitable for use for the epoxidation of olefins.Type: GrantFiled: April 11, 2006Date of Patent: April 29, 2008Assignee: Degussa AGInventors: Thomas Haas, Robert Jahn
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Patent number: 7351764Abstract: Mechanical or Chemical pulp is treated with about 0.01 weight % to about 5 weight % of a Mixture. The Mixture is water; diethylenetriaminepentakis(methyl)phosphonic acid or its known salts; polyacrylic acid or its known salts; and optionally one or more inert compounds. This Mixture acts to either maintain the brightness level of the pulp at the target level or to increase the brightness level of the pulp. In addition the Mixture allows for maintaining the pulp at the target level of brightness even when the amounts of other ingredients, such as hydrogen peroxide, hydrosulfite, sodium silicate and magnesium, that are typically added to the pulp, are reduced.Type: GrantFiled: March 31, 2004Date of Patent: April 1, 2008Assignee: Nalco CompanyInventors: Sergey M. Shevchenko, Prasad Y. Duggirala
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Patent number: 7344656Abstract: Stable oxidizing compositions and a method of preparing such compositions are presented. The compositions include a peroxygen, for example, a potassium monopersulfate or, percarbonate particle suspended in an alcoholic gel. The alcohol content in the gel is such that the peroxygen particle is prevented from coming into contact with water during storage, thereby helping maintain a high available oxygen level. When the alcoholic gel is mixed with water, it becomes less viscous and exposes the peroxygen particle to the water. The peroxygen is ready for use when it dissolves in the water.Type: GrantFiled: August 6, 2004Date of Patent: March 18, 2008Assignee: Truox, Inc.Inventor: Perry L. Martin
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Patent number: 7341636Abstract: A stabilized basic aqueous hydrogen peroxide composition is disclosed. The composition contains about 0.3 wt % to about 15 wt % of hydrogen peroxide; water; and a stabilizer system that contains about 10 ppm to about 1% of a stannate stabilizer; 10 ppm to about 1% of a phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents; and 10 ppm to about 1% of an aromatic chelating agent or a mixture of aromatic chelating agents. The composition comprises less than 10 ppm pyrophosphate, preferably no pyrophosphate; and has a pH greater than 7.0, preferably about 8.0 to about 10.5.Type: GrantFiled: January 18, 2007Date of Patent: March 11, 2008Assignee: Arkema Inc.Inventors: Xue Wang, Keith Robert Genco
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Patent number: 7179779Abstract: A novel cationic bleach activator having an enhanced hydrolytic stability is provided. The novel cationic bleach activator also leads to a reduction in strength loss of cotton fibers compared to conventional hot peroxide bleaching, and achieves this reduction in strength loss without a loss of whiteness. Bleaching compositions and detergent compositions comprising the novel cationic bleach activator also are provided. A method of bleaching cellulosic fibers, such as cotton fibers, and a method for removing a stain or discoloration from an article are further provided.Type: GrantFiled: January 6, 2006Date of Patent: February 20, 2007Assignee: North Carolina State UniversityInventors: Peter J. Hauser, David Hinks, Jung Jin Lee, Sang-Hoon Lim
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Patent number: 7169237Abstract: A stabilized basic aqueous hydrogen peroxide composition is disclosed. The composition contains about 0.3 wt % to about 15 wt % of hydrogen peroxide; water; and a stabilizer system that contains about 10 ppm to about 1% of a stannate stabilizer; 10 ppm to about 1% of a phosphonic acid chelating agent or a mixture of phosphonic acid chelating agents; and 10 ppm to about 1% of an aromatic chelating agent or a mixture of aromatic chelating agents. The composition comprises less than about 10 ppm pyrophosphate, preferably no pyrophosphate; and has a pH greater than 7.0, preferably about 8.0 to about 10.5.Type: GrantFiled: April 8, 2004Date of Patent: January 30, 2007Assignee: Arkema Inc.Inventors: Xue Wang, Keith Robert Genco
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Patent number: 7166290Abstract: The present invention provides improved methods and compositions for producing oocysts. The oocysts produced according to the invention find use in the manufacture of vaccines. In preferred embodiments, the present invention provides methods and compositions for the production of Eimeria oocysts. Vaccines containing Eimeria oocysts, sporocysts and/or sporozoites produced according to the present invention may be used to immunize birds against coccidiosis either in ovo or post hatch.Type: GrantFiled: August 29, 2002Date of Patent: January 23, 2007Assignee: Embrex, inc.Inventors: James E. Hutchins, Julius K. Tyczkowski
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Patent number: 7094393Abstract: The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0–10.0 during the tooth-bleaching procedure in the presence of a calcium chelating agent.Type: GrantFiled: August 15, 2002Date of Patent: August 22, 2006Assignee: BriteSmile Professional, Inc.Inventor: Robert Eric Montgomery
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Patent number: 7070710Abstract: The invention relates to a novel composition useful as a feed at production of chlorine dioxide, said composition being an aqueous solution comprising from about 1 to about 6.5 moles/liter of alkali metal chlorate, from about 1 to about 7 moles/liter of hydrogen peroxide and at least one of a protective colloid, a radical scavenger or a phosphonic acid based complexing agent, wherein the pH of the aqueous solution is from about 1 to about 4. The invention also concerns a process for producing chlorine dioxide using the novel composition.Type: GrantFiled: September 7, 1999Date of Patent: July 4, 2006Assignee: Eka Chemicals Inc.Inventors: Joel Tenney, Gunilla Jadesjö, Cecilia Bojrup Andresen
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Patent number: 7030071Abstract: Formation of solid-water detoxifying reagents for chemical and biological agents. Solutions of detoxifying reagent for chemical and biological agents are coated using small quantities of hydrophobic nanoparticles by vigorous agitation or by aerosolization of the solution in the presence of the hydrophobic nanoparticles to form a solid powder. For example, when hydrophobic fumed silica particles are shaken in the presence of IN oxone solution in approximately a 95:5-weight ratio, a dry powder results. The hydrophobic silica forms a porous coating of insoluble fine particles around the solution. Since the chemical or biological agent tends to be hydrophobic on contact with the weakly encapsulated detoxifying solution, the porous coating breaks down and the detoxifying reagent is delivered directly to the chemical or biological agent for maximum concentration at the point of need.Type: GrantFiled: February 26, 2002Date of Patent: April 18, 2006Assignee: The Regents of the University of CaliforniaInventors: Dennis M. Hoffman, Ing Lap Chiu
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Patent number: 6979412Abstract: The invention relates to a method of preparing a compound for the prevention of a contamination of raw materials, products, water and/or production means, which compound comprises at least hydrogen peroxide, glycerol and glycol acid, and wherein a mixture of glycerol and glycol acid is added to the hydrogen peroxide. The glycerol and glycol acid are combine and stirred while admixing a stabilizer for peroxide mixtures to form a stable gel-like concentrate, and subsequently when required, the concentrate is added in its entirety to the hydrogen peroxide in a previously determined ratio in order to form the compound.Type: GrantFiled: July 30, 2001Date of Patent: December 27, 2005Assignee: Uniprox B.V.Inventor: David Ruiter
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Patent number: 6824704Abstract: An aqueous gel useful for bleaching teeth comprising: (i) water; (ii) polyacrylic acid thickening agent; (iii) hydrogen peroxide bleaching agent; and (iv) aminocarboxylic acid/salt stabilizing agent. Preferably the polyacrylic acid is an easy to disperse carbomer and the gels contain high concentrations (20 to 40% by weight) of hydrogen peroxide. The gels exhibit room temperature stability, both with respect to gel stability and hydrogen peroxide decomposition, sufficient to eliminate the need for constant refrigeration. A method for using the gels to bleach teeth is also disclosed.Type: GrantFiled: October 15, 2003Date of Patent: November 30, 2004Assignee: The Gillette CompanyInventors: Thomas C. Chadwick, Heather L. Hunt
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Patent number: 6743372Abstract: The present invention relates to compositions for water treatment based on biodegradable polymers containing repeating succinyl units, biocidal oxidizing agents and unsubstituted or substituted amidosulphonic acid, their use in, and the process for, conditioning water of cooling circuits.Type: GrantFiled: February 13, 2001Date of Patent: June 1, 2004Assignee: Bayer AktiengesellschaftInventors: Roland Kleinstück, Torsten Groth, Winfried Joentgen
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Publication number: 20040079920Abstract: An aqueous gel useful for bleaching teeth comprising: (i) water; (ii) polyacrylic acid thickening agent; (iii) hydrogen peroxide bleaching agent; and (iv) aminocarboxylic acid/salt stabilizing agent. Preferably the polyacrylic acid is an easy to disperse carbomer and the gels contain high concentrations (20 to 40% by weight) of hydrogen peroxide. The gels exhibit room temperature stability, both with respect to gel stability and hydrogen peroxide decomposition, sufficient to eliminate the need for constant refrigeration. A method for using the gels to bleach teeth is also disclosed.Type: ApplicationFiled: October 15, 2003Publication date: April 29, 2004Inventors: Thomas C. Chadwick, Heather L. Hunt
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Patent number: 6689733Abstract: The present invention relates to novel manganese complexes of salen ligands and the use thereof as catalysts that enhance the action of peroxy compounds in washing, cleaning, and disinfecting processes.Type: GrantFiled: September 5, 2001Date of Patent: February 10, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Frank Bachmann, Rachel Allemann, Josef Dannacher, Marie-Josée Dubs, Cornelia Makowka, Grit Richter, Gunther Schlingloff, Peter Weingartner, Menno Hazenkamp
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Patent number: 6605182Abstract: (Co)poly-&agr;-hydroxyacrylic-acid-based polymers (P), optionally in lactonized form or in salt form, optionally as Mg-complexes, and which are characterized by a content in carbohydrate units and 2-hydroxy-2-carboxyethylene-1,2 monomer units, are suitable as biologically degradable, alkali-resistant stabilizers for peroxide bleaching agents.Type: GrantFiled: December 11, 1997Date of Patent: August 12, 2003Assignee: Clariant Finance (BVI) LimitedInventor: Bernard Danner
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Patent number: 6555020Abstract: An aqueous gel useful for bleaching teeth comprising: (i) water; (ii) polyacrylic acid thickening agent; (iii) hydrogen peroxide bleaching agent; and (iv) aminocarboxylic acid/salt stabilizing agent. Preferably the polyacrylic acid is an easy to disperse carbomer and the gels contain high concentrations (20 to 40% by weight) of hydrogen peroxide. The gels exhibit room temperature stability, both with respect to gel stability and hydrogen peroxide decomposition, sufficient to eliminate the need for constant refrigeration. A method for using the gels to bleach teeth is also disclosed.Type: GrantFiled: October 28, 1999Date of Patent: April 29, 2003Assignee: Den-Mat CorporationInventors: Thomas C. Chadwick, Heather L. Hunt
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Patent number: 6488914Abstract: The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0-10.0 during the tooth-bleaching procedure in the presence of a calcium chelating agent.Type: GrantFiled: October 31, 2001Date of Patent: December 3, 2002Assignees: Idex Dental Science, Inc.Inventor: R. Eric Montgomery
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Patent number: 6428580Abstract: A novel oxidizing system comprising ascorbic acid, at least one metal ion and an oxidizing agent capable of generating an oxidizing potential of from about 100 to about 500 millivolts at a pH ranging from about 2 to about 10. The oxidizing system can be used in quenching or neutralizing permanent wave processes and in developing oxidative hair color.Type: GrantFiled: August 20, 1997Date of Patent: August 6, 2002Assignee: L'OrealInventors: Thomas Schultz, Natalya Fadeeva, David W. Cannell
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Patent number: 6387863Abstract: The inventions is drawn to mixtures of manganese complexes and organic ligands which significantly improve the bleaching effect of hydrogen peroxide in washing liquours and prevent the reabsorption of migrating dyes in peroxide-containing washing liquors.Type: GrantFiled: September 4, 2001Date of Patent: May 14, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Menno Hazenkamp, Frank Bachmann, Cornelia Makowka, Marie-Josée Dubs, Grit Richter, Gunther Schlingloff, Josef Dannacher, Peter Weingartner
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Patent number: 6380142Abstract: The invention relates to novel storage-stable formulations containing at least one peroxide compound, at least one specific mediator, and at least one pH stabilizer. The invention further relates to the use of such storage-stable formulations as a component in enzymatic two-component bleaching systems.Type: GrantFiled: October 4, 2000Date of Patent: April 30, 2002Assignee: Bayer AktiengesellschaftInventors: Uwe Vogt, Markus Schindler
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Patent number: 6331292Abstract: The present invention relates to improved dental compositions and methods for bleaching teeth. More specifically, this invention is directed towards hydrogen peroxide-containing compounds that are maintained at a substantially constant pH range of 6.0-10.0 during the tooth-bleaching procedure in the presence of a calcium chelating agent.Type: GrantFiled: November 16, 1998Date of Patent: December 18, 2001Assignees: Idex Dental Sciences, Inc.Inventor: R. Eric Montgomery
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Patent number: 6306808Abstract: The present invention relates to the use of certain manganese complexes as catalysts for reactions with peroxy compounds for bleaching colored stains on hard surfaces. The invention also relates to cleaning agents for hard surfaces comprising such manganese catalysts.Type: GrantFiled: February 15, 2001Date of Patent: October 23, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Menno Hazenkamp, Marie-Josée Dubs, Frank Bachmann, Gunther Schlingloff, Rachel Allemann, Josef Dannacher