Amine- Or Amide-aldehyde Patents (Class 162/166)
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Patent number: 11066546Abstract: A cationic glyoxylated polyacrylamide polymer composition having improved storage stability for use in manufacture of paper, board or the like, which aqueous composition includes a glyoxylated polyacrylamide polymer having a cationic charge density in a range of 0.8-1.8 meq/g of dry polymer in dry content of 5-15% and a buffering acid. The aqueous composition has pH in a range of 2.2-4.0 and a viscosity of less than 80 mPas measured at 25° C. by using a Brookfield viscometer after 30 days storage at 35° C. or after 60 days storage at 23° C.Type: GrantFiled: July 5, 2017Date of Patent: July 20, 2021Assignee: Kemira OyjInventors: Asko Karppi, Matti Hietaniemi, Martina Halinen, Salla Timperi, Vladimir Grigoriev, Mikko Virtanen
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Patent number: 10982391Abstract: A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.Type: GrantFiled: May 31, 2017Date of Patent: April 20, 2021Assignee: ECOLAB USA INC.Inventors: Meng Zhang, Yulin Zhao, Na Xu
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Patent number: 10822462Abstract: The present disclosure relates to a novel aqueous composition of a structurally modified, water soluble polymer suitable for papermaking and to a method for manufacturing it. The method includes cleaving a backbone of the acrylamide polymer by a degradation agent and cross-linking the acrylamide polymer subjected to cleaving by using a polyfunctional cross-linking agent.Type: GrantFiled: September 15, 2016Date of Patent: November 3, 2020Assignee: Kemira OyjInventors: Yuping Luo, Roopa Tellakula, Scott Rosencrance
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Patent number: 10570567Abstract: A softener composition for use in the manufacture of paper includes a softener and an acidic material, wherein the softener composition has a relative acidity (RA) value of more than 0.05.Type: GrantFiled: February 29, 2016Date of Patent: February 25, 2020Assignee: KEMIRA OYJInventors: Chen Lu, Clayton Campbell, Jenna Sue Rabideau
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Patent number: 10458068Abstract: A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.Type: GrantFiled: February 16, 2016Date of Patent: October 29, 2019Assignee: KEMIRA OYJInventors: Chen Lu, Junhua Chen, Clay Campbell, Scott Rosencrance, Jenna Sue Rabideau
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Patent number: 10435843Abstract: A method for manufacturing paper is disclosed. A pulp slurry is produced, a paper sheet is formed from the slurry, an aldehyde functionalized polymer or polymers in combination with at least one additional strength additive is added to the slurry before and/or after sheet formation, and a water soluble acid is added on the paper sheet.Type: GrantFiled: July 14, 2017Date of Patent: October 8, 2019Assignee: KEMIRA OYJInventors: Chen Lu, Junhua Chen, Clay Campbell, Scott Rosencrance, Jenna Sue Rabideau
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Patent number: 10273635Abstract: A structured tissue product produced using a structured or imprinting fabric and a press roll. The tissue product has at least two plies, and has a crumple resistance of less than 30 grams force and an average peak to valley depth of at least 65 microns.Type: GrantFiled: November 24, 2015Date of Patent: April 30, 2019Assignee: First Quality Tissue, LLCInventors: Byrd Tyler Miller, IV, Justin S. Pence, James E. Sealey
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Patent number: 9975318Abstract: The disclosure provides a paper laminate comprising a décor paper prepared from a dispersion having improved optical performance without negatively impacting mechanical strength, wherein the dispersion comprises a TiO2 particle slurry comprising a treated TiO2 particle having a surface area of at least about 30 m2/g, and a cationic polymer; wherein the treatment comprises an oxide of silicon, aluminum, phosphorus or mixtures thereof; and the treatment is present in the amount of at least 15% based on the total weight of the treated titanium dioxide particle; paper pulp; and a cationic polymer; wherein the cationic polymer in the slurry and the cationic polymer in the dispersion are compatible; wherein for equal optical performance, the amount of treated TiO2 particle in the dispersion is reduced by about 10% when compared to a dispersion not comprising the treated TiO2 particle of (a).Type: GrantFiled: January 9, 2013Date of Patent: May 22, 2018Assignee: THE CHEMOURS COMPANY FC, LLCInventors: Mitchell Scott Chinn, Franck Andre Vanhecke
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Patent number: 9920482Abstract: The invention provides methods and compositions for increasing the strength of a paper sheet. The method involves adding to the paper sheet an amine containing polymer. The amine containing polymer interacts with materials such as GPAM or starch to make the paper stronger in terms including tensile strength, surface strength and bulk strength.Type: GrantFiled: October 6, 2014Date of Patent: March 20, 2018Assignee: ECOLAB USA INC.Inventors: Bradley Benz, Paul F. Richardson, James L. Thomas, Mei Liu, Robert M. Lowe
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Patent number: 9771478Abstract: Disclosed herein are compositions and methods for increasing microcapsule dispersion in self-healing paint and coating applications, and more particularly for non-covalent functionalization of polymeric microcapsule shell walls for improved dispersion in polymeric material formulations. Some embodiments are methods of forming a microcapsule dispersion, the methods including providing a polymeric material capable of forming a plurality of microcapsules; initiating polymerization of the polymeric material under reaction conditions sufficient to permit formation of the plurality of microcapsules; and adding an ethoxy-functionalized dispersant to the polymeric material before formation of the plurality of microcapsules is complete, thereby forming the microcapsule dispersion.Type: GrantFiled: July 11, 2014Date of Patent: September 26, 2017Assignee: Autonomic Materials, Inc.Inventors: Gerald O. Wilson, Subramanyam V. Kasisomayajula, Ryan T. Blanchette
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Patent number: 9568142Abstract: The present invention concerns a counterbalancing structure (1) for counterbalancing a load, where the counterbalancing structure (1) has support means (3) for the support of the load, said support means (3) being able to rotate along a plane or vertical plane (?) with respect to a first axis or vertical axis (y) laying on said plane (?), a first movable pulley group (2) having at least a first upper pulley (4, 5), precompressed elastic means (10), and at least a rope or line (11, 12) fixed at a first end to said elastic means (10) and at the second end to the support means (3), the at least a rope (11, 12) passing at least on at least a first upper pulley (4, 5) such to act in compression on the elastic means (10) when the load is coupled to the support means (3).Type: GrantFiled: December 9, 2015Date of Patent: February 14, 2017Assignee: CARTONI S.P.A.Inventors: Domenico Macchia, Alessandro Fiore
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Patent number: 9567708Abstract: The invention provides methods and compositions for increasing the dry strength of paper. The invention utilizes a tailored strength agent whose size and shape is tailored to fit into the junction points between flocs of a paper sheet. The strength agents is in contact with the slurry for just enough time to collect at the junction points but not so much that it can migrate away from there.Type: GrantFiled: November 7, 2014Date of Patent: February 14, 2017Assignee: ECOLAB USA INC.Inventors: Weiguo Cheng, Mei Liu, Gary S. Furman, Robert M. Lowe
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Patent number: 9506202Abstract: The invention is directed towards methods, compositions, and apparatus for increasing the strength of paper made out of a furnish having a large proportion of OCC. The method involves the following steps: 1) Providing a paper furnish having a large amount of OCC in it, 2) adding strength promoter to the furnish prior to adding a strength agent to the furnish, 3) adding a strength agent to the furnish, and 4) making a paper product from the furnish. This method allows cheap OCC material to be used in a papermaking process without the quality problems that the anionic trash in OCC typically causes. Thus paper products having low costs and high quality can be produced.Type: GrantFiled: November 10, 2014Date of Patent: November 29, 2016Assignee: NALCO CompanyInventors: Yulin Zhao, Jun Li, Qing Long Rao, Weiguo Cheng
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Patent number: 9492770Abstract: A filter has first and second fittings, a permeable filter medium, and a housing. The housing defines a fluid flow path within the housing between the first and second fittings, and the permeable filter medium is arranged in the fluid flow path to remove one or more substances from a fluid flowing along the fluid flow path. A finger hold is positioned in an upper region of the housing, the finger hold defining a space that is sufficient to allow one or more fingers of an operator to fit in the space and grasp the filter.Type: GrantFiled: October 31, 2013Date of Patent: November 15, 2016Assignee: Pall CorporationInventors: Mark William Foohey, Anthony William Gatica, Vincent Lam, Jacob Peter Vanderheyden, Tatsuya Hoshino
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Patent number: 9421519Abstract: The invention is directed to compositions and processes for the production of silica-stabilized ultrafine anatase titanias and which may further comprise tungsten and vanadia. The surface stabilization may be by treatment of the TiO2 particles with a low molecular weight and/or small nanoparticle form of silica such as, in preferred embodiments, a tetra(alkyl)ammonium silicate or silicic acid, which serves to efficiently maintain the anatase phase and prevent crystal growth under severe thermal and hydrothermal conditions, even in the presence of vanadia. The vanadia catalysts produced from the novel titanias have equal or improved catalytic activity for selective catalytic reduction of NOx compared to conventional vanadia supported silica-titania based catalysts. The invention is further directed to diesel emission catalytic devices comprising the novel titania-based catalyst compositions.Type: GrantFiled: August 15, 2013Date of Patent: August 23, 2016Assignee: Cristal USA, Inc.Inventor: David M. Chapman
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Patent number: 9120074Abstract: The disclosure provides a laminate paper comprising a treated inorganic core particle, in particular treated titanium dioxide (TiO2) particle, having improved dispersability, prepared by a process comprising: (a) heating a slurry comprising porous silica treated inorganic core particle and water at a temperature of at least about 90° C.; and (b) adding a soluble alumina source to the slurry from step (a) while maintaining the pH at about 8.0 to 9.5 to form an alumina treatment on the porous silica treated inorganic core particle; wherein the treated inorganic core particle does not comprise dense silica or alumina treatments, and has silica present in the amount of about 7% to about 14% and alumina present in the amount of about 4.0% to about 8.0%; and wherein the particle to particle surface treatments are substantially homogeneous.Type: GrantFiled: October 11, 2012Date of Patent: September 1, 2015Assignee: THE CHEMOURS COMPANY TT, LLCInventor: Michael Patrick Diebold
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Patent number: 8932433Abstract: A method of improving retention and drainage in a papermaking process is disclosed. The addition of an associative polymer, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry to improve retention and drainage is disclosed. Additionally a method to improve retention and drainage comprising addition of an organic microparticle, a poly(vinylamine) and optionally a siliceous material to the papermaking slurry is disclosed. A composition comprising an associative polymer, and a poly(vinylamine) and optionally further comprising cellulose fiber is disclosed.Type: GrantFiled: July 17, 2012Date of Patent: January 13, 2015Assignee: Solenis Technologies, L.P.Inventors: Frank J. Sutman, John C. Harrington, Robert A Gelman
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Patent number: 8920606Abstract: The present disclosure is directed to a continuous process for preparing cellulose reactive adducts of polyvinylamide.Type: GrantFiled: December 6, 2012Date of Patent: December 30, 2014Assignee: BASF SEInventor: Matthew D. Wright
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Patent number: 8916024Abstract: Methods and systems are provided for producing market pulp which include treatment of pulp with diverse ionic compounds before pulp drying. Cationically and anionically charged compounds can be used to treat pulp before pulp drying to improve pulp dewatering performance and efficiency in the production of market pulp. Market pulp products containing the treatment compounds are also described.Type: GrantFiled: November 26, 2012Date of Patent: December 23, 2014Assignee: Buckman Laboratories International, Inc.Inventors: Weiping Ban, Philip M. Hoekstra, Michael R. Elsey
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Patent number: 8894817Abstract: The invention provides methods and compositions for increasing the dry strength of paper. The invention utilizes a tailored strength agent whose size and shape is tailored to fit into the junction points between flocs of a paper sheet. The strength agents is in contact with the slurry for just enough time to collect at the junction points but not so much that it can migrate away from there.Type: GrantFiled: January 16, 2014Date of Patent: November 25, 2014Assignee: Ecolab USA Inc.Inventors: Weiguo Cheng, Mei Liu
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Patent number: 8882964Abstract: The invention is directed towards methods, compositions, and apparatus for increasing the strength of paper made out of a furnish having a large proportion of OCC. The method involves the following steps: 1) Providing a paper furnish having a large amount of OCC in it, 2) adding strength promoter to the furnish prior to adding a strength agent to the furnish, 3) adding a strength agent to the furnish, and 4) making a paper product from the furnish. This method allows cheap OCC material to be used in a papermaking process without the quality problems that the anionic trash in OCC typically causes. Thus paper products having low costs and high quality can be produced.Type: GrantFiled: February 17, 2012Date of Patent: November 11, 2014Assignee: Nalco CompanyInventors: Yulin Zhao, Jun Li, Qing Long Rao, Weiguo Cheng
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Patent number: 8771469Abstract: This invention relates to resins useful for drainage in papermaking and the process of making paper using the resins. In particular the invention relates to glyoxalated copolymers of acrylamide containing significant amounts of cationic comonomer.Type: GrantFiled: November 8, 2010Date of Patent: July 8, 2014Assignee: Hercules IncorporatedInventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
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Patent number: 8753480Abstract: The current invention includes a composition having stability additives of selected inorganic salts and/or organic incorporated into an aldehyde-functionalized polymer product. The stability additive can be post added to the finished polymer product, added to the reaction vessel prior to inducing functionalization of the non-functionalized polymer, or added at any stage during the functionalization reaction. Methods for forming the composition and using the composition to produce a cellulosic fiber-based medium are also disclosed.Type: GrantFiled: October 12, 2012Date of Patent: June 17, 2014Assignee: Nalco CompanyInventors: Heinrich E. Bode, Michael R. St. John, Mei Liu, Robert M. Lowe
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Patent number: 8708162Abstract: Provided are nonwoven polymeric fiber webs using an improved curable composition. Such curable composition comprises an aldehyde or ketone and an amine salt of an inorganic acid. The composition when applied to polymeric fibers is cured to form a water-insoluble polymer binder which exhibits good adhesion and thermodimensional stability.Type: GrantFiled: August 19, 2009Date of Patent: April 29, 2014Assignee: Johns ManvilleInventors: Kiarash Alavi Shooshtari, James Patrick Hamilton, Jawed Asrar
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Patent number: 8673117Abstract: A degrading agent composition for use in manufacturing a tissue product generally includes a degrading agent, a degradation inhibiting carrier, and a non-ionic surfactant. The non-ionic surfactant stabilizes the viscosity of the composition as a function of time. The degrading agent composition can be used in combination with a temporary wet strength agent to produce a tissue product exhibiting high initial wet tensile strength and desirable decay properties. Processes for forming the tissue product and pumpable fluids containing the degrading agent composition are also disclosed.Type: GrantFiled: September 30, 2010Date of Patent: March 18, 2014Assignee: Kemira OyjInventors: Scott Rosencrance, Yuping Luo, Vladimir Grigoriev
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Patent number: 8512520Abstract: A paper size which comprises a stable aqueous dispersion of a reactive size, from 5 to 100% by weight, based on the reactive size, of a substantially linear nitrogen-comprising polymer having at least 3 mmol/g of basic nitrogen atoms, and from 1 to 50% by weight of cationic starch having a degree of substitution of at least 0.05 is described. The paper size has a good sizing effect and a stable viscosity.Type: GrantFiled: November 29, 2005Date of Patent: August 20, 2013Assignee: BASF AktiengesellschaftInventors: Markus Schmid, Roland Ettl, Klaus Lorenz, Rainer Dyllick-Brenzinger, Andreas Brockmeyer
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Patent number: 8435382Abstract: Storage-stable glyoxalated polyacrylamide polymers and high solids aqueous compositions formulated with them are described. These glyoxalated polyacrylamide compositions can be used as additives for papermaking, providing paper with good dry and temporary wet strength, and increasing papermaking de-watering rates.Type: GrantFiled: June 13, 2008Date of Patent: May 7, 2013Assignee: Buckman Laboratories International, Inc.Inventors: Chen Lu, James Andrew Ward
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Patent number: 8262859Abstract: The present invention is directed to compositions comprising a cellulose reactive functionalized polyvinylamine first adduct, compositions comprising combinations of the cellulose reactive functionalized polyvinylamine first adduct and cellulose reactive functionalized polyvinylamide second adduct, methods for preparing first adduct and second adduct blends and finally methods of increasing the wet or dry strength of paper by incorporation into the paper furnish or coating a paper or board with said adducts.Type: GrantFiled: October 31, 2008Date of Patent: September 11, 2012Assignee: BASF SEInventor: Matthew D. Wright
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Patent number: 8197640Abstract: The present invention relates to methods for manufacturing paper or paperboard with improved strength, the methods comprising the addition of the reaction product of a cationic polyacrylamide and an aqueous aldehyde generating compound or a glyoxal releasing compound, or glyoxal itself, prepared at the mill site at high concentrations, then diluted and added into a fiber furnish prior to forming or drying of the paper or paperboard sheet.Type: GrantFiled: July 20, 2007Date of Patent: June 12, 2012Assignee: Bercen, Inc.Inventor: Joseph Schaffer
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Patent number: 8097126Abstract: The present invention relates to an aqueous composition comprising at least one finely divided filler and at least one water-soluble amphoteric copolymer, a process for the preparation of such a composition and its use as an additive in the production of paper, cardboard and board.Type: GrantFiled: July 15, 2005Date of Patent: January 17, 2012Assignee: BASF SEInventors: Hans-Joachim Haehnle, Anton Esser, Volker Braig, Rainer Blum, Peter Baumann, Jacques Dupuis, Josef Neutzner
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Patent number: 8061055Abstract: Web stabilizer particularly for one-sided flotation of a running web. The device includes two discharge slots which allow for increased draw down force, which flattens machine direction wrinkles in a floating web. There is a primary discharge slot and a second discharge slot spaced from and stepped down from the primary discharge slot, a first web support surface between the primary discharge slot and the secondary discharge slot, and a second web support surface downstream of the secondary discharge slot in the direction of web travel. An integral blower provides a supply of air that is uniformly distributed to the primary and secondary slots. Air discharged from the primary slot is gathered into the air stream of the secondary slot and creates an increased air cushion to provide greater support to the web and thereby remove machine direction web wrinkles caused by higher tension in light weight webs.Type: GrantFiled: May 7, 2007Date of Patent: November 22, 2011Assignee: MegTec Systems, Inc.Inventors: Paul Seidl, Michael O. Rocheleau
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Patent number: 8048268Abstract: Method for controlling the deposition of organic contaminants from the pulp and papermaking systems using water soluble aminoplast ether copolymers is described herein. The aminoplast ether copolymer can be used alone or in combination with one or more additives. The pulps to be treated include mechanical, chemical, semi-chemical pulps; sulfide pulp; recycled old newspapers; mixed office wastes; corrugated boxes; and their combinations. The use of water soluble aminoplast ether copolymers to control or prevent pitch and stickies deposition improves down stream performance of papermaking equipment increasing mill efficiency and improving paper quality.Type: GrantFiled: October 27, 2009Date of Patent: November 1, 2011Assignee: Enzymatic Deinking Technologies, LLCInventors: Chengliang Jiang, Xiang H. Wang, Jianhua Ma, James G. Tausche
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Publication number: 20110226432Abstract: A method of mixing at least two chemicals or additives into a process liquid flow flowing in a process liquid flow duct including: feeding a liquid jet to the process liquid flow in the process liquid flow duct, wherein the liquid jet is formed in a feeding device and the liquid jet flows in a transverse direction to a flow direction of the process liquid flow through the process liquid flow duct; mixing the at least two chemicals or additives together to form a mixture; feeding the mixture of the at least two chemicals or additives into the process liquid flow duct with the feeding liquid jet, and mixing the at least two chemicals or additives with the feeding liquid jet in the process liquid flow duct.Type: ApplicationFiled: May 16, 2011Publication date: September 22, 2011Applicant: WETEND TECHNOLOGIES OYInventor: Jouni MATULA
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Patent number: 7951265Abstract: Aqueous slurries of finely divided fillers which are at least partly coated with polymers and which are obtainable by treating aqueous slurries of finely divided fillers with at least one water-soluble amphoteric copolymer whose structures are identified in the specification are used as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining of the paper stock.Type: GrantFiled: March 18, 2005Date of Patent: May 31, 2011Assignee: BASF AktiengesellschaftInventors: Anton Esser, Volker Braig, Martin Wendker, Rainer Blum, Peter Baumann, Josef Neutzner, Jacques Dupuis, Hans-Joachim Haehnle
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Publication number: 20110094695Abstract: Method for controlling the deposition of organic contaminants from the pulp and papermaking systems using water soluble aminoplast ether copolymers is described herein. The aminoplast ether copolymer can be used alone or in combination with one or more additives. The pulps to be treated include mechanical, chemical, semi-chemical pulps; sulfide pulp; recycled old newspapers; mixed office wastes; corrugated boxes; and their combinations. The use of water soluble aminoplast ether copolymers to control or prevent pitch and stickies deposition improves down stream performance of papermaking equipment increasing mill efficiency and improving paper quality.Type: ApplicationFiled: October 27, 2009Publication date: April 28, 2011Inventors: Chengliang Jiang, Xiang H. Wang, Jianhua Ma, James G. Tausche
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Patent number: 7901543Abstract: A composition for enhancing the dewatering of a paper sheet on a paper machine and a method for using the composition is disclosed. The composition comprising one or more aldehyde-functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000. The method comprising adding the composition to the paper machine at a dosage of about 0.05 lb/ton to about 15 lb/ton, based on dry fiber.Type: GrantFiled: December 14, 2009Date of Patent: March 8, 2011Assignee: Nalco CompanyInventors: Michael R. St. John, Angela P. Zagala
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Patent number: 7897013Abstract: Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent. The other component is a stabilized polyacrylamide prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and comprising the polyacrylamide; and (3) adding a second portion of glyoxal to the second reaction mixture to form the stabilized polyacrylamide. If desired, an aldehyde scavenger can be included in one or more of step (1), step (2), step (3), or the stabilized polyacrylamide. Such compositions can be used to enhance the strength of paper, particularly the wet strength of paper.Type: GrantFiled: November 21, 2008Date of Patent: March 1, 2011Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold, Karla D. Favors
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Patent number: 7842162Abstract: A method is provided for manufacturing paper by means of layer-by-layer nanocoating techniques. The method comprises the sequential processing of an aqueous pulp of lignocellulose fibers which is first subjected to nanocoating by alternatively adsorbing onto the fibers multiple consecutively-applied layers of oppositely-charged nanoparticles, polymers and/or proteins thereby making a modified aqueous pulp of multi-layer nanocoated lignocellulose fibers, then draining the water out of the modified pulp to form sheets of multi-layer nanocoated fibers, and drying the formed sheets of multi-layer nanocoated fibers. The resulting dried sheets are then processed to make a finished paper that has superior physical strength and improved surface properties.Type: GrantFiled: March 11, 2006Date of Patent: November 30, 2010Assignee: Louisiana Tech University Foundation, Inc.Inventors: Yuri M. Lvov, George Grozdits
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Patent number: 7828934Abstract: This invention relates to resins useful for imparting strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. In particular the invention relates to resins useful for imparting dry-strength and wet-strength to paper under conditions of high sulfite ion concentrations.Type: GrantFiled: December 15, 2005Date of Patent: November 9, 2010Assignee: Hercules IncorporatedInventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
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Patent number: 7682488Abstract: A method of forming a cellulosic web is discussed, the product of which may, for example, possess at least one of increased softness, strength, and absorbency. The method measures the total anionic charge and controls the net charge of an aqueous stream.Type: GrantFiled: June 27, 2007Date of Patent: March 23, 2010Assignee: Georgia-Pacific Consumer Products LPInventors: Kang Chang Yeh, Gary L. Worry, Thomas N. Kershaw, Henry S. Ostrowski
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Patent number: 7670459Abstract: Fibrous products containing a durable softening agent are disclosed. The softening agent generally comprises a polysiloxane containing a plurality of first functional groups. In order to improve the wet retention of the softening agent on cellulosic fibers, the softening agent is reacted with a retention agent. The retention agent generally comprises a cationic polymer having a second functional group. In one embodiment, for instance, the softening agent contains epoxy groups or anhydride groups, while the retention agent contains amine groups. Products that may be made according to the present invention include tissue products, wipes and other absorbent articles.Type: GrantFiled: December 29, 2004Date of Patent: March 2, 2010Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Gil Bernard Didier Garnier, Michael Ralph Lostocco, Troy Michael Runge, Thomas Hampshire Schulz
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Patent number: 7641766Abstract: A method of enhancing the dewatering of a paper sheet on a paper machine comprising adding to the paper sheet about 0.05 lb/ton to about 15 lb/ton, based on dry fiber, of one or more aldehyde functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000.Type: GrantFiled: January 26, 2004Date of Patent: January 5, 2010Assignee: Nalco CompanyInventors: Michael R. St. John, Angel P. Zagala
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Patent number: 7628888Abstract: A composition includes at least one hydrophilic polymer containing primary (—NH2) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of increasing the strength of paper includes the step of contacting the paper with a composition comprising (i) at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function. A hydrogel composition is formed from a mixture of at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function.Type: GrantFiled: June 12, 2006Date of Patent: December 8, 2009Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Eric J. Beckman, W. Eamon Carroll, Toby Chapman, Kristen E. Minnich, Dennis Sagl, Richard J. Goddard
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Patent number: 7589153Abstract: A method for making storage-stable glyoxalated inter-copolymers with higher and adjustable charge density suitable for use as a strengthening agent for paper. The glyoxalated inter-copolymers can be used to enhance the strength of paper, particularly recycled paper and mechanical printing paper.Type: GrantFiled: May 25, 2005Date of Patent: September 15, 2009Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, Clay E. Ringold, Karla D. Favors
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Patent number: 7494566Abstract: A composition includes water; at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function as described above. The hydrophilic polymer and the saccharide are mixed to form a reaction mixture and reacted to increase the viscosity of the reaction mixture. The reaction is then substantially terminated by reducing the pH of the composition.Type: GrantFiled: March 12, 2004Date of Patent: February 24, 2009Assignee: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: William Eamon Carroll, Christian Jehn Rendu, Eric J. Beckman
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Patent number: 7488403Abstract: Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent. The other component is a stabilized glyoxalated polyacrylamide prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and comprising the glyoxalated polyacrylamide; and (3) adding a second portion of glyoxal to the second reaction mixture to form the stabilized glyoxalated polyacrylamide. If desired, an aldehyde scavenger can be included in one or more of step (1), step (2), step (3), or the stabilized glyoxalated polyacrylamide. Such compositions can be used to enhance the strength of paper, particularly the wet strength of paper.Type: GrantFiled: August 17, 2004Date of Patent: February 10, 2009Inventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold, Karla D. Favors
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Publication number: 20080230194Abstract: A method and apparatus for feeding a retention chemical together with an additive, which may be another chemical or for example a mineral, to paper suspension flow in a paper machine. The method and the apparatus are applicable to the simultaneous feeding of an additive of the paper manufacture, such as a filler, together with a retention chemical to paper pulp.Type: ApplicationFiled: July 12, 2005Publication date: September 25, 2008Applicant: WETEND TECHNOLOGIES OYInventor: Jouni Matula
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Patent number: 7377998Abstract: An overlay paper is described which comprises a cellulosic non-woven to which a UV stabilizing agent is applied in an amount from 0.001 to 10% by weight, based on the grammage of the non-woven used, a process for producing the same and the use of the same for the production of a laminate.Type: GrantFiled: December 19, 2002Date of Patent: May 27, 2008Assignee: Papierfabrik Schoeller & Hoesch GmbH & Co. KGInventors: Stefan Sick, Horst Blum, Robert Hansmann
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Patent number: RE44936Abstract: A composition for enhancing the dewatering of a paper sheet on a paper machine and a method for using the composition is disclosed. The composition comprising one or more aldehyde-functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000. The method comprising adding the composition to the paper machine at a dosage of about 0.05 lb/ton to about 15 lb/ton, based on dry fiber.Type: GrantFiled: July 31, 2012Date of Patent: June 10, 2014Assignee: Nalco CompanyInventors: Michael R. St. John, Angela P. Zagala
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Patent number: RE45383Abstract: A method of enhancing the dewatering of a paper sheet on a paper machine comprising adding to the paper sheet about 0.05 lb/ton to about 15 lb/ton, based on dry fiber, of one or more aldehyde functionalized polymers comprising amino or amido groups wherein at least about 15 mole percent of the amino or amido groups are functionalized by reacting with one or more aldehydes and wherein the aldehyde functionalized polymers have a molecular weight of at least about 100,000.Type: GrantFiled: July 31, 2012Date of Patent: February 24, 2015Assignee: Nalco CompanyInventors: Michael R. St. John, Angela P. Zagala