Amine- Or Amide-aldehyde Patents (Class 162/166)
  • Patent number: 10822462
    Abstract: 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: Grant
    Filed: September 15, 2016
    Date of Patent: November 3, 2020
    Assignee: Kemira Oyj
    Inventors: Yuping Luo, Roopa Tellakula, Scott Rosencrance
  • Patent number: 10570567
    Abstract: 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: Grant
    Filed: February 29, 2016
    Date of Patent: February 25, 2020
    Assignee: KEMIRA OYJ
    Inventors: Chen Lu, Clayton Campbell, Jenna Sue Rabideau
  • Patent number: 10458068
    Abstract: 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: Grant
    Filed: February 16, 2016
    Date of Patent: October 29, 2019
    Assignee: KEMIRA OYJ
    Inventors: Chen Lu, Junhua Chen, Clay Campbell, Scott Rosencrance, Jenna Sue Rabideau
  • Patent number: 10435843
    Abstract: 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: Grant
    Filed: July 14, 2017
    Date of Patent: October 8, 2019
    Assignee: KEMIRA OYJ
    Inventors: Chen Lu, Junhua Chen, Clay Campbell, Scott Rosencrance, Jenna Sue Rabideau
  • Patent number: 10273635
    Abstract: 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: Grant
    Filed: November 24, 2015
    Date of Patent: April 30, 2019
    Assignee: First Quality Tissue, LLC
    Inventors: Byrd Tyler Miller, IV, Justin S. Pence, James E. Sealey
  • Patent number: 9975318
    Abstract: 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: Grant
    Filed: January 9, 2013
    Date of Patent: May 22, 2018
    Assignee: THE CHEMOURS COMPANY FC, LLC
    Inventors: Mitchell Scott Chinn, Franck Andre Vanhecke
  • Patent number: 9920482
    Abstract: 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: Grant
    Filed: October 6, 2014
    Date of Patent: March 20, 2018
    Assignee: ECOLAB USA INC.
    Inventors: Bradley Benz, Paul F. Richardson, James L. Thomas, Mei Liu, Robert M. Lowe
  • Patent number: 9771478
    Abstract: 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: Grant
    Filed: July 11, 2014
    Date of Patent: September 26, 2017
    Assignee: Autonomic Materials, Inc.
    Inventors: Gerald O. Wilson, Subramanyam V. Kasisomayajula, Ryan T. Blanchette
  • Patent number: 9568142
    Abstract: 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: Grant
    Filed: December 9, 2015
    Date of Patent: February 14, 2017
    Assignee: CARTONI S.P.A.
    Inventors: Domenico Macchia, Alessandro Fiore
  • Patent number: 9567708
    Abstract: 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: Grant
    Filed: November 7, 2014
    Date of Patent: February 14, 2017
    Assignee: ECOLAB USA INC.
    Inventors: Weiguo Cheng, Mei Liu, Gary S. Furman, Robert M. Lowe
  • Patent number: 9506202
    Abstract: 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: Grant
    Filed: November 10, 2014
    Date of Patent: November 29, 2016
    Assignee: NALCO Company
    Inventors: Yulin Zhao, Jun Li, Qing Long Rao, Weiguo Cheng
  • Patent number: 9492770
    Abstract: 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: Grant
    Filed: October 31, 2013
    Date of Patent: November 15, 2016
    Assignee: Pall Corporation
    Inventors: Mark William Foohey, Anthony William Gatica, Vincent Lam, Jacob Peter Vanderheyden, Tatsuya Hoshino
  • Patent number: 9421519
    Abstract: 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: Grant
    Filed: August 15, 2013
    Date of Patent: August 23, 2016
    Assignee: Cristal USA, Inc.
    Inventor: David M. Chapman
  • Patent number: 9120074
    Abstract: 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: Grant
    Filed: October 11, 2012
    Date of Patent: September 1, 2015
    Assignee: THE CHEMOURS COMPANY TT, LLC
    Inventor: Michael Patrick Diebold
  • Patent number: 8932433
    Abstract: 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: Grant
    Filed: July 17, 2012
    Date of Patent: January 13, 2015
    Assignee: Solenis Technologies, L.P.
    Inventors: Frank J. Sutman, John C. Harrington, Robert A Gelman
  • Patent number: 8920606
    Abstract: The present disclosure is directed to a continuous process for preparing cellulose reactive adducts of polyvinylamide.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: December 30, 2014
    Assignee: BASF SE
    Inventor: Matthew D. Wright
  • Patent number: 8916024
    Abstract: 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: Grant
    Filed: November 26, 2012
    Date of Patent: December 23, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Weiping Ban, Philip M. Hoekstra, Michael R. Elsey
  • Patent number: 8894817
    Abstract: 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: Grant
    Filed: January 16, 2014
    Date of Patent: November 25, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Weiguo Cheng, Mei Liu
  • Patent number: 8882964
    Abstract: 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: Grant
    Filed: February 17, 2012
    Date of Patent: November 11, 2014
    Assignee: Nalco Company
    Inventors: Yulin Zhao, Jun Li, Qing Long Rao, Weiguo Cheng
  • Patent number: 8771469
    Abstract: 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: Grant
    Filed: November 8, 2010
    Date of Patent: July 8, 2014
    Assignee: Hercules Incorporated
    Inventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
  • Patent number: 8753480
    Abstract: 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: Grant
    Filed: October 12, 2012
    Date of Patent: June 17, 2014
    Assignee: Nalco Company
    Inventors: Heinrich E. Bode, Michael R. St. John, Mei Liu, Robert M. Lowe
  • Patent number: 8708162
    Abstract: 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: Grant
    Filed: August 19, 2009
    Date of Patent: April 29, 2014
    Assignee: Johns Manville
    Inventors: Kiarash Alavi Shooshtari, James Patrick Hamilton, Jawed Asrar
  • Patent number: 8673117
    Abstract: 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: Grant
    Filed: September 30, 2010
    Date of Patent: March 18, 2014
    Assignee: Kemira Oyj
    Inventors: Scott Rosencrance, Yuping Luo, Vladimir Grigoriev
  • Patent number: 8512520
    Abstract: 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: Grant
    Filed: November 29, 2005
    Date of Patent: August 20, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Schmid, Roland Ettl, Klaus Lorenz, Rainer Dyllick-Brenzinger, Andreas Brockmeyer
  • Patent number: 8435382
    Abstract: 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: Grant
    Filed: June 13, 2008
    Date of Patent: May 7, 2013
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Chen Lu, James Andrew Ward
  • Patent number: 8262859
    Abstract: 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: Grant
    Filed: October 31, 2008
    Date of Patent: September 11, 2012
    Assignee: BASF SE
    Inventor: Matthew D. Wright
  • Patent number: 8197640
    Abstract: 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: Grant
    Filed: July 20, 2007
    Date of Patent: June 12, 2012
    Assignee: Bercen, Inc.
    Inventor: Joseph Schaffer
  • Patent number: 8097126
    Abstract: 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: Grant
    Filed: July 15, 2005
    Date of Patent: January 17, 2012
    Assignee: BASF SE
    Inventors: Hans-Joachim Haehnle, Anton Esser, Volker Braig, Rainer Blum, Peter Baumann, Jacques Dupuis, Josef Neutzner
  • Patent number: 8061055
    Abstract: 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: Grant
    Filed: May 7, 2007
    Date of Patent: November 22, 2011
    Assignee: MegTec Systems, Inc.
    Inventors: Paul Seidl, Michael O. Rocheleau
  • Patent number: 8048268
    Abstract: 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: Grant
    Filed: October 27, 2009
    Date of Patent: November 1, 2011
    Assignee: Enzymatic Deinking Technologies, LLC
    Inventors: Chengliang Jiang, Xiang H. Wang, Jianhua Ma, James G. Tausche
  • Publication number: 20110226432
    Abstract: 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: Application
    Filed: May 16, 2011
    Publication date: September 22, 2011
    Applicant: WETEND TECHNOLOGIES OY
    Inventor: Jouni MATULA
  • Patent number: 7951265
    Abstract: 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: Grant
    Filed: March 18, 2005
    Date of Patent: May 31, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Anton Esser, Volker Braig, Martin Wendker, Rainer Blum, Peter Baumann, Josef Neutzner, Jacques Dupuis, Hans-Joachim Haehnle
  • Publication number: 20110094695
    Abstract: 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: Application
    Filed: October 27, 2009
    Publication date: April 28, 2011
    Inventors: Chengliang Jiang, Xiang H. Wang, Jianhua Ma, James G. Tausche
  • Patent number: 7901543
    Abstract: 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: Grant
    Filed: December 14, 2009
    Date of Patent: March 8, 2011
    Assignee: Nalco Company
    Inventors: Michael R. St. John, Angela P. Zagala
  • Patent number: 7897013
    Abstract: 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: Grant
    Filed: November 21, 2008
    Date of Patent: March 1, 2011
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold, Karla D. Favors
  • Patent number: 7842162
    Abstract: 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: Grant
    Filed: March 11, 2006
    Date of Patent: November 30, 2010
    Assignee: Louisiana Tech University Foundation, Inc.
    Inventors: Yuri M. Lvov, George Grozdits
  • Patent number: 7828934
    Abstract: 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: Grant
    Filed: December 15, 2005
    Date of Patent: November 9, 2010
    Assignee: Hercules Incorporated
    Inventors: Shane Cyr, Henk Bakker, Willem Marinus Stevels, Ronald Richard Staib
  • Patent number: 7682488
    Abstract: 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: Grant
    Filed: June 27, 2007
    Date of Patent: March 23, 2010
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Kang Chang Yeh, Gary L. Worry, Thomas N. Kershaw, Henry S. Ostrowski
  • Patent number: 7670459
    Abstract: 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: Grant
    Filed: December 29, 2004
    Date of Patent: March 2, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Gil Bernard Didier Garnier, Michael Ralph Lostocco, Troy Michael Runge, Thomas Hampshire Schulz
  • Patent number: 7641766
    Abstract: 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: Grant
    Filed: January 26, 2004
    Date of Patent: January 5, 2010
    Assignee: Nalco Company
    Inventors: Michael R. St. John, Angel P. Zagala
  • Patent number: 7628888
    Abstract: 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: Grant
    Filed: June 12, 2006
    Date of Patent: December 8, 2009
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Eric J. Beckman, W. Eamon Carroll, Toby Chapman, Kristen E. Minnich, Dennis Sagl, Richard J. Goddard
  • Patent number: 7589153
    Abstract: 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: Grant
    Filed: May 25, 2005
    Date of Patent: September 15, 2009
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, Clay E. Ringold, Karla D. Favors
  • Patent number: 7494566
    Abstract: 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: Grant
    Filed: March 12, 2004
    Date of Patent: February 24, 2009
    Assignee: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: William Eamon Carroll, Christian Jehn Rendu, Eric J. Beckman
  • Patent number: 7488403
    Abstract: 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: Grant
    Filed: August 17, 2004
    Date of Patent: February 10, 2009
    Inventors: Cornel Hagiopol, Yuping Luo, David F. Townsend, James W. Johnston, Clay E. Ringold, Karla D. Favors
  • Publication number: 20080230194
    Abstract: 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: Application
    Filed: July 12, 2005
    Publication date: September 25, 2008
    Applicant: WETEND TECHNOLOGIES OY
    Inventor: Jouni Matula
  • Patent number: 7377998
    Abstract: 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: Grant
    Filed: December 19, 2002
    Date of Patent: May 27, 2008
    Assignee: Papierfabrik Schoeller & Hoesch GmbH & Co. KG
    Inventors: Stefan Sick, Horst Blum, Robert Hansmann
  • Patent number: 7300545
    Abstract: A water-soluble polymer dispersion, process for producing the same and a method of use therefor. In particular, the water-soluble polymer dispersion is one comprising water-soluble polymer fine particles of 100 ?m or less diameter having at least one ionic property selected from among cationic, amphoteric, nonionic and anionic properties together with a polyalkyleneimine and/or a product of polyalkyleneimine modification wherein according to necessity an appropriate amount of water-soluble inorganic salt is incorporated. The provided process enables easily performing the production in dispersed form by means of production facilities of low cost. The obtained water-soluble polymer dispersion is excellent in storage stability and exhibits satisfactory fluidity and solubility so as to enable use in papermaking raw material pretreatments added to papermaking raw materials prior to machine operation and also for enhancement of freeness, increase of sizing degree and enhancement of yield.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 27, 2007
    Assignee: Hymo Corporation
    Inventors: Takumi Ohara, Emiko Odaka, Ryousuke Yonemoto
  • Patent number: 7172678
    Abstract: A composite sheet material, useful as a component of roofing shingles, and a process of making same, which includes a glass fiber web bound with a thermosetting resin which includes a fatty acid amide having the structural formula RCOONH2, where R is a C8–C25 alkyl.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: February 6, 2007
    Assignee: GAF Materials Corporation
    Inventors: V. Robert Canfield, Robson F. Storey, Betty C. Roberts
  • Patent number: RE44936
    Abstract: 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: Grant
    Filed: July 31, 2012
    Date of Patent: June 10, 2014
    Assignee: Nalco Company
    Inventors: Michael R. St. John, Angela P. Zagala
  • Patent number: RE45383
    Abstract: 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: Grant
    Filed: July 31, 2012
    Date of Patent: February 24, 2015
    Assignee: Nalco Company
    Inventors: Michael R. St. John, Angela P. Zagala