Biocidal Patents (Class 162/161)
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Patent number: 11566140Abstract: A coating composition is provided for inhibiting growth of fungus and/or algae on a surface. The coating composition includes a dry film preservative and an antibacterial dry-film preservative comprising an immobilized isothiazolin-3-one derivative/zinc oxide complex. The amount of the antibacterial preservative comprising immobilized 1,2-isothiazolin-3-one derivative/zinc oxide complex and the dry film preservative contained in the coating composition is sufficient to inhibit or prevent the defacement of a surface exposed to the environment, when such defacement is due to growth of fungi or algae, or a combination of fungi and algae on a surface coated with said surface coating composition.Type: GrantFiled: May 28, 2020Date of Patent: January 31, 2023Assignee: Troy CorporationInventors: Richard S. Valpey, III, Jake Jacobs
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Patent number: 11530514Abstract: A method for manufacturing a fibrous web, such as web of paper, board, tissue or the like is disclosed. The method includes obtaining at least one fibre suspension of lignocellulosic and/or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity. The fibre suspension including bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitized by adding a germinant surfactant including a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point located at a lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.Type: GrantFiled: November 8, 2018Date of Patent: December 20, 2022Assignee: Kemira OyjInventors: Juhana Ahola, Marko Kolari
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Patent number: 11490621Abstract: Disclosed is a method for controlling a biofilm, for removing a formed biofilm and/or for controlling a growth of microorganisms, preferably bacteria, in an aqueous environment of an industrial manufacturing process including cellulosic fibre material. In the method, a composition including a compound selected from a group consisting of 3-[(4-methylphenyl)sulphonyl]-2-propenenitrile and 4-amino-N-2-thiazolyl-benzenesulphonamide is administered to the aqueous environment of the process.Type: GrantFiled: August 28, 2018Date of Patent: November 8, 2022Assignees: Kemira Oyj, University of CopenhagenInventors: Jaakko Simell, Marko Kolari, Michael Givskov, Tim Tolker-Nielsen, Morten Levin Rybtke, Jens Bo Andersen
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Patent number: 11160282Abstract: The invention relates to use of a composition comprising a cationic surfactant, which comprises a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, for inducing germination of bacterial endospores in pulp suspension for making of paper, board or the like. The invention relates also to a method for quantitatively reducing bacterial endospores in pulp suspension for making of paper, board or the like. The method comprises obtaining of aqueous pulp suspension, and administering the said composition to the pulp suspension. The cationic surfactant is allowed to interact with bacterial endospores in the pulp suspension. Germination of endospores and destroying microorganisms is thus induced.Type: GrantFiled: May 12, 2017Date of Patent: November 2, 2021Assignee: Kemira OyjInventors: Juhana Ahola, Marko Kolari
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Patent number: 10906619Abstract: A load distribution harness for water based sports includes a stiffening shell provided with composite material. The stiffening shell has a support plate from fibre reinforced sheet material having thermoplastic matrix material with fibres embedded therein. The support plate is substantially C-shaped. The support plate extends continuously from a first end region that in use extends to a first end of the spreader bar, via a midsection that in use extends along the body of the user, preferably along the lumbar region of the user, to a second end region that in use extends to a second end of the spreader bar.Type: GrantFiled: September 6, 2017Date of Patent: February 2, 2021Assignee: NORTH ACTIONSPORTS B.V.Inventors: Guido Kreijkamp, Bartholomeus Gerardus Nicolaas Bootsma
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Patent number: 10765115Abstract: The present invention provides a method for suppressing a decrease in the concentration of an isothiazoline compound, wherein even if an addition concentration of the isothiazoline compound used as an antibacterial agent is low in a water system, the decrease in the concentration thereof can be suppressed so that the residual rate thereof after 24 hours can be raised. The method is carried out in a manner wherein to a water system, an isothiazoline compound is fed with an addition concentration of 0.2 mg/L or more and less than 1 mg/L, and a combined chlorine agent consisting of a chlorine stabilizer and a chlorine-based oxidant is added so as to maintain a concentration thereof at 0.3 mg/L as Cl2 or more and 6 mg/L as Cl2 or less therein.Type: GrantFiled: March 28, 2016Date of Patent: September 8, 2020Assignee: KURITA WATER INDUSTRIES LTD.Inventors: Takashi Iyasu, Yasushi Murano, Toshimasa Kato
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Patent number: 10640923Abstract: The invention relates to a method for treating starch in pulp, paper and board making processes, in which processes recycled fibre material is used as raw material wherein the recycled fibre material is pulped in a pulper and obtaining a pulp flow comprising an aqueous phase and at least recycled fibres and starch dispersed in the aqueous phase. The method comprising the following steps: —adding amylase enzyme inhibitor and/or at least one biocide to pulp flow or to an aqueous process flow comprising starch for preventing starch degradation, and—adding an amphoteric polymer obtained by copolymerisation of (meth)acrylamide with cationic and anionic monomers to pulp flow or to an aqueous process flow comprising starch for binding starch to the fibres.Type: GrantFiled: August 26, 2016Date of Patent: May 5, 2020Assignee: Kemira OyjInventors: Matti Hietaniemi, Jaakko Ekman, Asko Karppi, Marko Kolari
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Patent number: 10479874Abstract: A method for making rubber films with improved ESD (electrostatic discharge) property relates to a method for making better ESD gloves using improved rubber composition with a precipitated CaCO3 filler. In addition, non-metallic filled organic pigment such as AZO compounds are suggested to make better ESD gloves. Additionally, other improved method steps such as chlorination and addition of Carbon Black in conjunction with chlorination are suggested to make better ESD gloves.Type: GrantFiled: October 12, 2018Date of Patent: November 19, 2019Inventor: Shimon Amdur
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Patent number: 10245303Abstract: A therapeutic composition for the treatment of lung diseases or disorders and diseases or disorders of the airway passages including pneumonia, acute respiratory failure, and acute respiratory distress syndrome is based on the generation of a biocidal anion by an enzymatic reaction catalyzed by a peroxidase. The peroxide utilized by the peroxidase enzyme can be endogenous or can be generalized by the action of an oxidase enzyme on a suitable substrate.Type: GrantFiled: May 10, 2016Date of Patent: April 2, 2019Assignee: Laclede, Inc.Inventors: Michael Pellico, Pamela Bosco
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Patent number: 9981883Abstract: A method of fertilizing a plant comprises applying to a plant an effective amount of a composition comprising a product of a salicylic acid, a potassium polyphosphite, a potassium phosphite, and a potassium phosphate. The composition may be prepared by reacting salicylic acid, ammonium hydroxide, potassium hydroxide and/or potassium carbonate, phosphoric acid, and phosphorous acid.Type: GrantFiled: May 9, 2017Date of Patent: May 29, 2018Assignee: Plant Food Systems, Inc.Inventor: Carl Fabry
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Patent number: 9862693Abstract: Presented herein inter alia are novel compounds and methods of using the same for the treatment of cancers.Type: GrantFiled: December 10, 2014Date of Patent: January 9, 2018Assignee: The Regents of the University of CaliforniaInventors: Richard J. Pietras, Michael E. Jung, Diana C. Marquez-Garban, Gang Deng
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Patent number: 9808012Abstract: A biocidal composition comprising tributyl tetradecyl phosphonium chloride and tetrakis(hydroxymethyl)phosphonium sulfate at a weight ratio of 2:1 to 1:10, and its use for the control of microorganisms in aqueous and water-containing systems.Type: GrantFiled: August 13, 2010Date of Patent: November 7, 2017Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Kathy Jing Ji, Zheng Q. Wen
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Patent number: 9643896Abstract: A method of fertilizing a plant comprises applying to a plant an effective amount of a composition comprising a product of a salicylic acid, a potassium polyphosphite, a potassium phosphite, and a potassium phosphate. The composition may be prepared by reacting salicylic acid, ammonium hydroxide, potassium hydroxide and/or potassium carbonate, phosphoric acid, and phosphorous acid.Type: GrantFiled: February 22, 2016Date of Patent: May 9, 2017Assignee: Plant Food Systems, Inc.Inventor: Carl Fabry
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Patent number: 9585386Abstract: A synergistic microbicidal composition having two components. The first component is a nonionic surfactant with structure: R1O(CH2CH(CH3)O)5(CH2CH2O)9H, where R1 is a C8 alkyl group. The second component is 2-methyl-4-isothiazolin-3-one. The weight ratio of the nonionic surfactant to 2-methyl-4-isothiazolin-3-one is from 1:0.005 to 1:1.3714.Type: GrantFiled: October 2, 2014Date of Patent: March 7, 2017Assignees: DOW GLOBAL TECHNOLOGIES LLC, ROHM AND HAAS COMPANYInventors: Usha Gandhi, Christine McInnis, Kiran Pareek, Paul O. Schook, Nigel G. Watson, Terry Michael Williams, Bei Yin
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Patent number: 9512562Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.Type: GrantFiled: March 13, 2013Date of Patent: December 6, 2016Assignee: GP Cellulose GmbHInventors: Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz
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Patent number: 9474703Abstract: The antimicrobial composition of the present invention comprises a cationic active ingredient, a quaternized sugar-derived surfactant, and an optional foam boosting surfactant. These formulations have a high cidal activity in a short amount of time and provide stable copious foam. The formulations of the present invention also exhibit enhanced tissue (e.g. skin) compatibility as defined by an in vitro whole toxicology assessment method.Type: GrantFiled: December 5, 2014Date of Patent: October 25, 2016Assignee: Ecolab USA Inc.Inventors: Daniel E. Pedersen, Angela R. Eder, Charles Allen Hodge
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Patent number: 9347179Abstract: Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.Type: GrantFiled: June 22, 2015Date of Patent: May 24, 2016Assignee: Buckman Laboratories International, Inc.Inventor: Eddie Van Haute
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Patent number: 9314020Abstract: A synergistic microbicidal composition containing 2-(decylthio)ethanamine or its hydrochloride salt and 2,2-dibromomalonamide in a weight ratio from 64/1 to 1/16.Type: GrantFiled: September 13, 2013Date of Patent: April 19, 2016Assignee: Dow Global Technologies LLCInventors: Paul O. Schook, Freddie L. Singleton, Sheila M. Tinetti, Bei Yin
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Patent number: 9290802Abstract: The invention is directed towards methods and compositions for identifying the specific microorganisms present in a particular potion of a papermaking processes. The method involves obtaining a sample from the process which is such that little or no live examples of the microorganism remain. However because DNA from the organisms is still present, an analysis which identifies portions of DNA specific to the particular organism will correctly identify the microorganism present. This allows for analysis of infestations present on felts or paper sheets which typically no longer have many live microorganisms on them when samples are taken for analysis.Type: GrantFiled: December 23, 2013Date of Patent: March 22, 2016Assignee: NALCO COMPANYInventors: Laura E. Rice, Liliya Lund
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Patent number: 9272070Abstract: An absorbent article can include, in an immobilized form: a) microcapsules formed, in a proportion of at least 25% by weight relative to the total weight of polymer(s) forming the microcapsules, of a material derived from at least one natural polymer, a protein analog thereof, or a derivative thereof, and charged with at least one active agent, and b) at least one release agent that is capable of stimulating the dissolution of the microcapsules during the placing of the absorbent article in contact with an aqueous medium, and chosen from enzymes, surfactants that are water-soluble at room temperature and atmospheric pressure, and mixtures thereof, the microcapsules a) and the release agent b) being present in the said article in a form isolated from each other.Type: GrantFiled: March 5, 2014Date of Patent: March 1, 2016Assignee: Microcapsules TechnologiesInventor: Gerard Habar
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Publication number: 20150140047Abstract: The present invention relates to a surface treatment and a method for its application for the introduction of a wide variety of differentiating properties to fibersin sliver form through a surface treatment of said fibers. The system can accommodate chemical processes, sonochemical processes, and acoustic cavitation processes whereby the fibers are speckled or plated with at least one predetermined compound in a liquid medium to impart at least one desired property to the fibers and for the orderly inclusion of such treated fibers in sliver form having such properties in yarns, woven, knit, or non-woven textiles.Type: ApplicationFiled: April 24, 2013Publication date: May 21, 2015Applicant: ARGAMAN TECHNOLOGIES LTD.Inventor: Jerry Greenwald
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Publication number: 20150068657Abstract: The present invention provides composite materials comprising a population of cellulose fibers complexed with an activator, and an additive comprising synthetic fibers complexed with a tethering agent, wherein the tethering agent has an affinity for the activator, and wherein an interaction between the tethering agent and the activator attaches the synthetic fibers to the cellulose fibers to form the composite material. The present invention also provides methods of manufacture for such composite materials, and methods for their use, for example in forming gypsum board composites.Type: ApplicationFiled: May 29, 2014Publication date: March 12, 2015Applicant: Soane Labs, LLCInventors: Gangadhar Jogikalmath, David S. Soane
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Publication number: 20150027649Abstract: The invention relates to the papermaking art and, in particular, to the manufacture of paper substrates, paper-containing articles such as file folders, having improved reduction or inhibition in the growth of microbes, mold and/or fungus.Type: ApplicationFiled: October 2, 2014Publication date: January 29, 2015Inventors: VICTOR P. HOLBERT, SANDEEP KULKARNI, RICHARD C. WILLIAMS, RICHARD D. FABER
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Patent number: 8940086Abstract: Process for making an antibacterial coating includes the following steps. A solution containing titanium dioxide particles and a dispersant is prepared. A mechanical stirring method is employed to prepare a preliminary titanium dioxide dispersed solution. An ultrasonic agitation method is employed to prepare a nanometer titanium dioxide dispersed solution, an average particle size of the titanium dioxide particles being less than or equal to 200 nanometers. Lastly, the nanometer titanium dioxide dispersed solution is mixed with a papermaking coating to prepare an antibacterial coating.Type: GrantFiled: November 28, 2013Date of Patent: January 27, 2015Assignee: Ningbo Asia Pulp & Paper Co., LtdInventors: Shu-Hua Bai, Jun-Ming Wang, Ji-Ping Quan, Meng-Huai Ran, Wei He
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Publication number: 20150020986Abstract: Embodiments of a process for manufacturing a paper-based malleable dough for moulding and sculpting applications are described herein that include: soaking and mixing shredded paper in water, yielding a paper dough; and adding and mixing at least one setting-type joint compound with the paper dough. The at-least one setting type compound is added in a weight ratio of setting type compound to shredded paper of between about 11:8 to 17:8. The paper-based malleable dough allows creating objects that are ecological, durable, malleable and lightweight and that brings out the creative side of the user.Type: ApplicationFiled: July 18, 2013Publication date: January 22, 2015Inventors: Mario Lessard, Christine Thibeault
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Patent number: 8926796Abstract: The present invention provides formulations for papermaking and methods for their use. In embodiments, the formulations include a treatment agent and a fluid carrier, where the treatment agent includes a volatile debonder or a polymer composition exhibiting a lower critical solution temperature. Methods for treating a paper product to increase its bulk or its stiffness are also disclosed, in addition to paper products formed from such methods.Type: GrantFiled: November 8, 2012Date of Patent: January 6, 2015Assignee: Nanopaper, LLCInventors: Gangadhar Jogikalmath, David S. Soane, Andrea Schneider
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Publication number: 20140305606Abstract: A sizing composition includes from about 3 kg/ton to about 15 kg/ton of calcium propionate, an additive, and a balance of water. The additive is selected from the group consisting of starch, an optical brightener, a biocide, a defoamer, a surface size agent, a wet strength additive, and combinations thereof. The sizing composition has a pH ranging from 7 to 8.Type: ApplicationFiled: April 15, 2013Publication date: October 16, 2014Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventor: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
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Publication number: 20140288188Abstract: This invention discloses a process for stabilising an aqueous mineral preparation comprising a step of adding at least one aldehyde-containing and/or aldehyde-releasing and/or phenolic and/or isothiazoline biocide to said aqueous mineral preparation.Type: ApplicationFiled: November 22, 2012Publication date: September 25, 2014Inventors: Nicola Di Maiuta, Patrick Schwarzentruber
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Publication number: 20140246160Abstract: Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.Type: ApplicationFiled: May 15, 2014Publication date: September 4, 2014Applicant: Buckman Laboratories International, Inc.Inventor: Eddie Van Haute
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Patent number: 8808500Abstract: Microbial growth in an aqueous system containing borohydride residues is controlled by adding an aldehyde or aldehyde source, followed by adding an active halogen biocide. The active halogen biocide is preferably stabilized by an N-hydrogen compound.Type: GrantFiled: January 20, 2012Date of Patent: August 19, 2014Assignee: Lonza Inc.Inventor: Kevin Janak
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Patent number: 8764942Abstract: Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.Type: GrantFiled: June 4, 2013Date of Patent: July 1, 2014Assignee: Buckman Laboratories International, Inc.Inventor: Eddie Van Haute
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Patent number: 8758562Abstract: The invention relates to a method for increasing the benefit from starch in pulped, preferably repulped cellulosic material at paper or paperboard manufacturing comprising the steps of (a) pulping a cellulosic material containing a starch; (b) treating the cellulosic material containing the starch with one or more biocides, preferably in the thick stock area; and (h) adding an ionic polymer and preferably, an auxiliary ionic polymer to the cellulosic material; wherein the ionic polymer and the optionally added auxiliary ionic polymer preferably have a different average molecular weight and preferably a different ionicity, wherein the ionicity is the molar content of ionic monomer units relative to the total amount of monomer units.Type: GrantFiled: August 25, 2011Date of Patent: June 24, 2014Assignee: Hercules IncorporatedInventors: Ludwig Krapsch, Christopher John McGregor, Jean Mallard de La Varende
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Patent number: 8734615Abstract: The invention relates to a method for impregnating and drying a continuous paper web (1) by means of a urea resin dissolved in water, and to a corresponding system. Such paper webs (1) are employed for example as furniture foil or floor laminate, wherein in the known art melamine resin is used exclusively for bonding to a substrate. This is relatively expensive. Therefore the object of the invention is to create a method in which the paper web (1) which is impregnated by means of urea resin can be bonded to the substrate with a high degree of operational reliability. Said object is achieved in that the temperature of the paper web (1) is determined separately in each of the drying zones (3.1, 3.2, 3.3, 3.4), that for each of the drying zones (3.1, 3.2, 3.3, 3.4) an amount and/or a temperature of the circulating air are regulated so that the maximum temperature of the paper web (1) is 99° C., and that exhaust air is extracted from a first one of the drying zones (3.1, 3.2, 3.3, 3.Type: GrantFiled: November 4, 2011Date of Patent: May 27, 2014Assignee: Vits Technology GmbHInventors: Udo Unger, Adnan Doengelli, Daniel James, Willi Erkelenz
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Patent number: 8709206Abstract: A method of making a paper-based product includes substantially continuously treating a papermaking furnish including from greater than 0% to 100% recycled fibers with a biocide, and forming the furnish into the paper-based product. The furnish has a microorganism level of greater than 5,000 colony forming units per gram, and substantially continuously treating the furnish with the biocide reduces the microorganism level so that the paper-based product has a microorganism level of less than 5,000 colony forming units per gram.Type: GrantFiled: March 11, 2013Date of Patent: April 29, 2014Assignee: Sonoco Development Inc.Inventors: Zheming Xia, James Fogg, Mark Velicer, Matthew Meister
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Publication number: 20140088190Abstract: The present invention provides a method of treating an aqueous system for biocide control, by adding an acidified solution that includes monoalkyldithiocarbamate salt and alkyl isothiocyanate to an aqueous system. A biocide feed system is also provided that is configured to generate a reproducible level of alkyl isothiocyanate. The method and system provide effective levels of alkyl isothiocyanate for rapid biocidal activity, along with levels of monoalkyldithiocarbamate salt which can decompose to form additional alkyl isothiocyanate and provide longer-term biocidal activity.Type: ApplicationFiled: September 10, 2013Publication date: March 27, 2014Applicant: Buckman Laboratories International, Inc.Inventors: Thomas E. McNeel, Richard A. Clark, William C. Ganus, Richard D. Lusk, JR., Graciela H. Vunk, Luis A. Zugno
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Publication number: 20140083635Abstract: Process for making an antibacterial coating includes the following steps. A solution containing titanium dioxide particles and a dispersant is prepared. A mechanical stirring method is employed to prepare a preliminary titanium dioxide dispersed solution. An ultrasonic agitation method is employed to prepare a nanometer titanium dioxide dispersed solution, an average particle size of the titanium dioxide particles being less than or equal to 200 nanometers. Lastly, the nanometer titanium dioxide dispersed solution is mixed with a papermaking coating to prepare an antibacterial coating.Type: ApplicationFiled: November 28, 2013Publication date: March 27, 2014Applicant: Ningbo Asia Pulp & Paper Co., Ltd.Inventors: SHU-HUA BAI, JUN-MING WANG, JI-PING QUAN, MENG-HUAI RAN, WEI HE
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Patent number: 8613859Abstract: Synergistic mixtures of haloamines and their use to control the growth of microorganisms in aqueous systems are disclosed. The method of using the synergistic mixtures entails adding an effective amount of a monohaloamine and an effective amount of a dihaloamine to an aqueous system. The ratio of monohaloamine to dihaloamine is selected to result in a synergistic biocidal effect.Type: GrantFiled: October 25, 2010Date of Patent: December 24, 2013Assignee: Hercules IncorporatedInventors: Michael J. Mayer, Freddie L. Singleton
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Patent number: 8613829Abstract: This invention relates to paper products and/or substrates suitable for being made into wallboard tape (also may be known as joint tape and/or drywall tape) and having improved reduction or inhibition in the growth of microbes, mold and/or fungus. The paper substrate is characterized by its excellent physical properties including cross direction (CD) tensile, machine (MD) tensile, internal bond, wet tensile, hygroexpansivity, curl, bonding properties, bonding of joint tape to joint compound, etc. The paper product of the invention contains a sizing agent and an antimicrobial compound as well as other optional components including without limitation a binder. The paper product of the invention may be produced by contacting the plurality of cellulose fibers with each of the sizing agent, antimicrobial compound, and optional components at any point in the papermaking process, converting process, and/or post-converting process. Finally, the invention relates to methods of using the paper substrate.Type: GrantFiled: July 9, 2010Date of Patent: December 24, 2013Assignee: International Paper CompanyInventors: Dennis W. Anderson, Bianca A. Morganroth, William A. Payne
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Publication number: 20130319627Abstract: Methods to preserve starch present in pulp are provided and also methods to control calcium precipitation and/or scaling in digesters or BOD systems. The methods can be performed as part of a papermaking process. Process water containing pulp can be treated with a chloramine. Process water containing pulp with native starch can receive a double treatment with at least one biocide, such as chloramine, and at least one oxidant, such as sodium hypochlorite. The treatment can be performed in any suitable manner. The treatment can be performed at one or more stages or locations in a papermaking system. A target residual chloramine value or range can be achieved by the treatment. Packaging sheets/boards and other paper products manufactured using the methods provided exhibit superior strength and other desirable characteristics.Type: ApplicationFiled: June 4, 2013Publication date: December 5, 2013Inventor: Eddie Van Haute
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Publication number: 20130284388Abstract: A process for making a stiffened and rigid paper includes preparing a pulp slurry consisting essentially of water, a cellulosic pulp, a crosslinker, and a starch, and optionally a binder; draining the liquid from the pulp slurry to form a web; and drying the web. Alternatively, a process for making a stiffened and rigid paper includes the step of adding at least one crosslinker at one or more locations, such as at the wet-end, dry-end, or at both ends of the papermaking process. Suitable crosslinkers include a glyoxal-containing crosslinker, a gluteraldehyde, a polyfunctional aziridine, a zirconium-containing crosslinker, a titanium-containing crosslinker, and an epichlorohydrin, and mixtures thereof. When a binder is employed, it can be added either in the dry or wet form. Provided is a neutral or alkaline process to produce a paper product having the improved mechanical properties of a laminated product in the Z-direction, without a lamination step.Type: ApplicationFiled: June 20, 2013Publication date: October 31, 2013Inventor: Thomas W. Ballinger
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Patent number: 8530064Abstract: Disclosed is a method for inhibiting the growth of mold on building materials by application onto and/or incorporation into the building material of a mold-inhibiting composition comprising dehydroacetic acid or a salt thereof and, optionally, an additional fungicidal agent such as a quaternary ammonium compound. A preferred application of the method is the inhibition of mold growth on plasterboard (drywall).Type: GrantFiled: October 7, 2009Date of Patent: September 10, 2013Assignee: Lonza, Inc.Inventors: Xiao Jiang, Leigh Walker
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Publication number: 20130186584Abstract: The invention relates to a method for increasing the benefit from starch in pulped, preferably repulped cellulosic material at paper or paperboard manufacturing comprising the steps of (a) pulping a cellulosic material containing a starch; (b) treating the cellulosic material containing the starch with one or more biocides, preferably in the thick stock area; and (h) adding an ionic polymer and preferably, an auxiliary ionic polymer to the cellulosic material; wherein the ionic polymer and the optionally added auxiliary ionic polymer preferably have a different average molecular weight and preferably a different ionicity, wherein the ionicity is the molar content of ionic monomer units relative to the total amount of monomer units.Type: ApplicationFiled: August 25, 2011Publication date: July 25, 2013Applicant: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLCInventors: Ludwig Krapsch, Christopher John McGregor, Jean Victor Mallard de La Varende
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Publication number: 20130186583Abstract: A method of making a paper-based product includes substantially continuously treating a papermaking furnish including from greater than 0% to 100% recycled fibers with a biocide, and forming the furnish into the paper-based product. The furnish has a microorganism level of greater than 5,000 colony forming units per gram, and substantially continuously treating the furnish with the biocide reduces the microorganism level so that the paper-based product has a microorganism level of less than 5,000 colony forming units per gram.Type: ApplicationFiled: March 11, 2013Publication date: July 25, 2013Applicant: Sonoco Development Inc.Inventor: Sonoco Development Inc.
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Publication number: 20130186580Abstract: Hardwood pulp fiber-containing structures, more particularly to eucalyptus pulp fiber-containing fibrous structures that may exhibit improved fiber densification and/or improved softness compared to known hardwood pulp fiber-containing fibrous structures are provided.Type: ApplicationFiled: January 17, 2013Publication date: July 25, 2013Applicant: THE PROCTER & GAMBLE COMPANYInventor: THE PROCTER & GAMBLE COMPANY
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Publication number: 20130186582Abstract: The invention is directed towards methods and compositions for identifying the specific microorganisms present in a particular potion of a papermaking processes. The method involves obtaining a sample from the process which is such that little or no live examples of the microorganism remain. However because DNA from the organisms is still present, an analysis which identifies portions of DNA specific to the particular organism will correctly identify the microorganism present. This allows for analysis of infestations present on felts or paper sheets which typically no longer have many live microorganisms on them when samples are taken for analysis.Type: ApplicationFiled: January 24, 2012Publication date: July 25, 2013Inventors: Laura E. Rice, Liliya Lund
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Publication number: 20130160958Abstract: The present invention provides formulations for papermaking and methods for their use. In embodiments, the formulations include a treatment agent and a fluid carrier, where the treatment agent includes a volatile debonder or a polymer composition exhibiting a lower critical solution temperature. Methods for treating a paper product to increase its bulk or its stiffness are also disclosed, in addition to paper products formed from such methods.Type: ApplicationFiled: November 8, 2012Publication date: June 27, 2013Applicant: NANOPAPER, LLCInventor: NANOPAPER, LLC
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Patent number: 8419899Abstract: A paperboard comprises from greater than 0% to 100% recycled fibers and has a microorganism count of less than 5,000 colony forming units per gram of paperboard.Type: GrantFiled: September 16, 2010Date of Patent: April 16, 2013Assignee: Sonoco Development Inc.Inventors: Zheming Xia, Jim Fogg, Mark Velicer, Matthew Meister
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Publication number: 20120282207Abstract: The present invention provides novel antimicrobial compositions. In one embodiment, the antimicrobial composition comprises an antimicrobial effective amount of a mixture comprising (a) two or more fatty acids, each of which is natural or naturally derived, and (b) at least one of (i) a natural or naturally derived product, (ii) an alcoholic solvent, or (iii) an organic acid or a salt thereof. The present invention also provides a product comprising a preservative effective amount of the aforementioned mixture.Type: ApplicationFiled: May 3, 2012Publication date: November 8, 2012Applicant: Lincoln Manufacturing Inc.Inventor: Patrick Jay Lutz
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Patent number: 8282778Abstract: The invention relates to a method for preventing or delaying bacterial sporulation in the broke system of a board or paper machine by lowering the content of transition metals in the broke to a level unfavorable for sporulation. Preferably bacterial cells present in the broke system of the board or paper machine are not substantially killed by the procedure used for lowering the content of the transition metals. The invention further relates to a method for producing packaging board or packaging paper having a low bacterial spore content.Type: GrantFiled: March 15, 2007Date of Patent: October 9, 2012Assignee: Kemira OyjInventor: Marko Kolari
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Publication number: 20120193054Abstract: Methods and apparatuses for forming a nonwoven web are described herein. The apparatus includes a mixing partition defining one or more openings therein that permit fluid communication between two fluid flow streams, at least one of which includes a fiber. The apparatus also includes an enclosed region surrounding at least a portion of the mixing partition. The enclosed region is adapted to provide an applied pressure to a fluid flow stream to urge the stream through one or more of the openings in the mixing partition. The apparatus also includes a receiving region designed to receive at least a combined flow stream and form a nonwoven web by collecting fiber from the combined flow stream.Type: ApplicationFiled: January 30, 2012Publication date: August 2, 2012Applicant: DONALDSON COMPANY, INC.Inventors: Hemant Gupta, Ajay Singh