Nitrogen Containing Compound Patents (Class 162/168.2)
  • Patent number: 11198772
    Abstract: To provide a surface treatment liquid capable of making a base material including polyorganosiloxane on at least a part of a surface thereof hydrophilic stably over a long period of time, and provide a surface treatment method using the surface treatment liquid. In a surface treatment liquid including (A) resin and a (B) solvent, as the (A) resin, resin having a functional group I that is a hydroxyl group and/or a cyano group is used, and a functional group II that is a hydrophilic group other than the functional group I, and a ratio of a structural unit having an anionic group to total structural units of the (A) resin is 5 mol % or less, or resin including a cationic group including an anion moiety and a cation moiety that can be bonded to the (A) resin is used.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: December 14, 2021
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Takashi Kamizono, Takahiro Senzaki, Takuya Noguchi
  • Patent number: 10047480
    Abstract: The present invention relates to a process for producing corrugated fiberboard from plies of paper which each have a grammage of 70 to 200 g/m2 and of which at least one ply of paper is obtained by a process comprising the addition of (A) 0.25 to 5 wt %, based on dry paper stock, of at least one cationic polymer comprising vinylamine units, and (B) 0 to 5 wt %, based on dry paper stock, of at least one polymeric anionic compound, to a paper stock, draining the paper stock by sheet formation, coating the paper web obtained with (C) 0.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: August 14, 2018
    Assignee: BASF SE
    Inventors: Matthew Buchan, Reinhard Haffke, Guido Rensen, Christoph Hamers, Norbert Schall
  • Patent number: 9988531
    Abstract: Powder blends are described comprising blends of particulate water soluble high molecular weight polymer flocculants. The polymer flocculants can include polyethylene oxide, polyacrylamide, copolymers thereof and combinations thereof. The powder blends allows the use of fine powders while reducing potential air quality and safety issues. The powder blends can be used for waste water purification, fiber dewatering, and the like. The powder blends can be diluted by a water dilution flow prior to entering a waste water stream.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: June 5, 2018
    Assignee: PSMG, LLC
    Inventor: Jason Holt
  • Patent number: 9718934
    Abstract: Cellulose fibers are impregnated with polyethyleneimine so that the impregnation forms a type of network, which can reduce the specific resistance of the cellulose material owing to the electrical conductivity of the network. The cellulose material can thereby be advantageously adapted to use as electrical insulation of transformers, the cellulose material in this case being soaked in transformer oil. An adaptation of the specific resistance of the cellulose material to the specific resistance of the oil lead to improved dielectric strength of the transformer insulation. A method for impregnation of the cellulose material is described.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 1, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Frank Heinrichsdorff, Volkmar Lüthen, Gabriele Winkler
  • Patent number: 9567710
    Abstract: A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, i) a copolymer comprising (a) between 1 and 70 mole % (meth) acrylamide and (b) between 30 and 99 mole % (meth) acryloyloxyethyltrimethyl ammonium chloride with an intrinsic viscosity between 5 and 9 dl/g; or ii) a hydrolysed homopolymer of vinylformamide comprising between 1 and 100 mole % vinyl amine units and having a K value of between 45 and 240. The process of the invention provides improved drainage time and solids content of the dewatered pulp.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: February 14, 2017
    Assignee: BASF SE
    Inventors: Christian Jehn-Rendu, Joachim Hege, Detlef Kannengiesser
  • Patent number: 9446604
    Abstract: A white pre-treatment composition and printing method using such pre-treatment composition are disclosed. Said white pre-treatment composition encompasses a liquid vehicle, a polyvalent metal salt, a latex resin and, at least, 8 wt % of a titanium dioxide particles dispersion. Also disclosed is an ink-set containing said white pre-treatment composition and, at least, an ink composition comprising a liquid vehicle and a colorant.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 20, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: George Sarkisian, Vladek Kasperchik, Gregg A. Lane, Steven L. Webb
  • Patent number: 9351917
    Abstract: A hair treatment composition comprising a thickener which comprises a copolymer derived from the polymerization of at least a non-ionic monomer (a) and at least a cationic monomer (b).
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: May 31, 2016
    Assignee: Conopco, Inc.
    Inventors: Frederic Jean-Michel Blondel, Christopher John Roberts
  • Patent number: 9326502
    Abstract: The invention relates to the production of nitrogen containing polymers from aziridines, to the use of these nitrogen containing polymers for stabilizing iodine containing compounds, to compositions comprising at least the nitrogen containing polymers and also iodine containing compounds, and to the use of these compositions as biocides and/or for controlling microorganisms.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: May 3, 2016
    Assignee: LANXESS Deutschland GmbH
    Inventors: Andreas Boettcher, Hermann Uhr, Peter Spetmann, Thomas Jaetsch, Joerg Fuehr
  • Patent number: 9233861
    Abstract: A water-in-oil emulsion is a product form having many practical advantages. A vinylamine-based macromolecule having specific effects as papermaking chemicals and a flocculant is provided in the form of a water-in-oil emulsion having good storage stability and high performance as a flocculation treatment agent. Disclosed is a flocculation treatment agent including a water-in-oil emulsion of a water-soluble macromolecule that is produced by subjecting a water-in-oil emulsion of an aqueous poly-N-vinylcarboxylic acid amide solution coexisting with a polyoxyalkylene alkyl ether to hydrolysis in the presence of an acid or a base. Preferably, the polyoxyalkylene alkyl ether is added before the hydrolysis reaction.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 12, 2016
    Assignee: HYMO CORPORATION
    Inventors: Shohei Mitsui, Kazuoki Takeo, Shogo Wakatsuki, Atsushi Yonekura
  • Patent number: 8999111
    Abstract: The invention provides methods and compositions for increasing the strengthening effect of a starch coating on paper. The method involves contacting the starch with a synthetic polymer before the starch is cooked. This changes how the starch gelatinizes and how the polymer gets distributed on the paper resulting in greater paper surface strength.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: April 7, 2015
    Assignee: Ecolab USA Inc.
    Inventors: David J Castro, Mei Liu, Gary S Furman, Dorota Smoron, Shawnee M Wilson, Zhiyi Zhang
  • Patent number: 8999112
    Abstract: A method for manufacturing a sheet of paper and/or board having improved retention and drainage properties is provided, according to which, before the formation of the sheet and/or board, at least two retention aids are added to the fibrous suspension. These two retention aids are a main retention aid corresponding to a (co)polymer having a cationic charge density above 2 meq/g, obtained by the Hofmann degradation reaction, and a secondary retention aid corresponding to a water-soluble or water-swellable polymer having an anionic charge density above 0.1 meq/g. The main retention aid is introduced into the fibrous suspension in a proportion of 100 to 800 g/t of dry pulp, and the secondary retention aid is introduced into the fibrous suspension in a proportion of 50 to 800 g/t of dry pulp and has an intrinsic viscosity IV above 3 dl/g.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 7, 2015
    Assignee: S.P.C.M. SA
    Inventors: Gatien Faucher, Rene Hund
  • Patent number: 8980011
    Abstract: A method of cleaning residue from a surface includes providing a disposable cellulosic wiper including a percentage by weight of pulp-derived papermaking fibers. The pulp-derived papermaking fibers have a characteristic scattering coefficient of less than 50 m2/kg. The wiper also includes a percentage by weight of fibrillated regenerated independent cellulosic microfibers having a number average diameter of less than about 2 microns, and a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml. The microfibers are selected and present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg. The wiper is applied, with a predetermined amount of pressure, to a residue-bearing surface, and the surface is wiped, while applying the predetermined amount of pressure, to remove residue from the surface, such that the surface has less than 1 g/m2 of residue after being wiped under the predetermined amount of pressure.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 17, 2015
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Daniel W. Sumnicht, Joseph H. Miller
  • Patent number: 8980055
    Abstract: A disposable cellulosic wiper includes (a) a percentage by weight of pulp-derived papermaking fibers, and (b) a percentage by weight of fibrillated regenerated independent cellulosic microfibers having a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml and having a weight average diameter of less than 2 microns. The microfibers are further characterized in that 40% by weight thereof is finer than 14 mesh.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 17, 2015
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Daniel W. Sumnicht, Joseph H. Miller
  • Patent number: 8980056
    Abstract: A dry strength additive composition generally includes an anionic and/or amphoteric polyacrylamide having a molecular weight of less than 1,000,000 Daltons, wherein the amphoteric polyacrylamide has a net negative charge; a cationic and/or amphoteric starch; and a cationic non-starch polymer having a charge density greater than 1 milliequivalent per gram (meq/g) at a pH of 3. The components defining the composition can be added to a pulp suspension sequentially or as a pre-blended mixture.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: March 17, 2015
    Assignee: Kemira Oyj
    Inventors: Chen Lu, Vladimir Grigoriev, Scott Rosencrance
  • Patent number: 8974637
    Abstract: The present invention relates to a process for the production of paper and board which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into an aqueous suspension comprising cellulosic fibers; and (c) dewatering the obtained suspension. The present invention also relates to a process for the production of a filler composition which comprises: (a) introducing one or more fillers, one or more anionic polysaccharides and one or more cationic agents into a mixing zone to form a filler composition; (b) introducing by means of a pump the filler composition into a storage tank.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: March 10, 2015
    Assignee: Akzo Nobel Chemicals International B.V.
    Inventor: Patrik Simonson
  • Publication number: 20150027651
    Abstract: A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, i) a copolymer comprising (a) between 1 and 70 mole % (meth) acrylamide and (b) between 30 and 99 mole % (meth) acryloyloxyethyltrimethyl ammonium chloride with an intrinsic viscosity between 5 and 9 dl/g; or ii) a hydrolysed homopolymer of vinylformamide comprising between 1 and 100 mole % vinyl amine units and having a K value of between 45 and 240. The process of the invention provides improved drainage time and solids content of the dewatered pulp.
    Type: Application
    Filed: August 6, 2014
    Publication date: January 29, 2015
    Applicant: BASF SE
    Inventors: Christian JEHN-RENDU, Joachim Hege, Detlef Kannengiesser
  • Patent number: 8926797
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of (a) at least one trivalent cation in the form of a salt, (b) at least one water-soluble cationic polymer and (c) at least one water-soluble amphoteric polymer to the paper stock, draining of the paper stock with sheet formation and subsequent drying of the paper products, the water-soluble cationic polymer (b) being selected from the group consisting of the (i) polymers comprising vinylamine units and (ii) polymers comprising ethylenimine units.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: January 6, 2015
    Assignee: BASF SE
    Inventors: Christian Jehn-Rendu, Ellen Krueger, Hans-Joachim Haehnle, Martin Ruebenacker, Norbert Schall, Thomas Muehlenbernd
  • 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: 8858759
    Abstract: Methods and compositions for improving dewatering efficiency during a papermaking or pulp drying process are disclosed. The methods can include a step of adding a dewatering agent solution to a location on a paper machine or pulp drying machine. The dewatering agent solution can include a soy based component. The soy based component can be soy flour or soy protein. The dewatering agent solution can be added to a wet end location of the pulp drying machine or paper machine or it can be sprayed onto a paper sheet prior to entering the press section of a paper machine. Additional dewatering agent solutions can also be added. The additional dewatering agent solutions can include cationic polymers or surfactants.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: October 14, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Prasad Duggirala, Weiguo Cheng, Luiz W. Pace
  • Publication number: 20140299286
    Abstract: This invention relates to a paper substrate containing high surface sizing and low internal sizing and having high dimensional stability, as well as methods of making and using the composition.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 9, 2014
    Inventors: KAPIL M. SINGH, DENNIS W. ANDERSON, PETER M. FROASS, YAOLIANG HONG, KOSARAJU KRISHNA MOHAN, THOMAS R. ARNSON, YAN C. HUANG
  • Patent number: 8852399
    Abstract: Polymer-containing articles of manufacture that provide one or more superior properties, such as soil adsorption properties, mirror cleaning properties, and/or absorption properties, compared to known polymer-containing articles of manufacture, are provided.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: October 7, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Charles William Neal, Charles Allen Redd, Jeffrey Glen Sheehan, Steven Daryl Smith, Robert Joseph McChain
  • Patent number: 8852400
    Abstract: The present disclosure provides for a method of preparing and using an emulsion for treating a papermaking process. The emulsion is an oil-in-water emulsion of alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer. The method comprises adding an oil-in-water emulsion to the papermaking process; wherein the oil-in-water emulsion comprises alkenyl succinic anhydride emulsified with a polymer comprising at least one primary or secondary amine containing monomer; and wherein the oil-in-water emulsion is added in an amount sufficient to improve sizing of the paper produced by the papermaking process. The primary or secondary amine may be a secondary amine comprising diallylamine, and the polymer may be a diallylamine-acrylamide copolymer.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: October 7, 2014
    Assignee: Ecolab USA Inc.
    Inventors: Michael R St. John, David J Castro, Mei Liu
  • Patent number: 8840760
    Abstract: The object of the process of the invention is to increase the retention of starch in the sheet of paper in order to reduce operating costs and increase the physical characteristics of the paper. To that end, it has been envisaged that trivalent cationic salts are added, metered into the slurry or in the process for obtaining starch in powder form or by mixing a percentage of trivalent salts in powder form with the starch in powder form, seeking the solution of said salts in the slurry, so that they dissolve during the dispersion of the slurry in the process for obtaining the sheet of paper. Organic polymers such as polyacrylamides, polyvinylamides and polydadmacs could optionally be applied in addition to said salts.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: September 23, 2014
    Assignee: Oriol Gracia Grandia
    Inventor: Oriol Gracia Grandia
  • Patent number: 8834678
    Abstract: The present disclosure relates generally to a tissue product having a creping composition disposed onto at least one surface thereof to increase the softness of the article, while retaining or improving manufacturing efficiency. The tissue products also have a sizing agent that increases the Wet Out time, without negatively impacting softness or machine runability. Preferably the creping composition comprises a cationic component and a film forming component, both of which are preferably water soluble. The cationic component carries a cationic charge that is capable of forming ionic bonds with the negatively charged fibers of the tissue web, thus providing a retention mechanism by which the creping composition is retained on the sheet. The overall retention of the creping composition on the sheet reduces the concentration of the composition in the machine process water, improving machine operability and runability.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: September 16, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Frank Gerald Druecke, Dave Allen Soerens, Benjamin Joseph Kruchoski, Frederick John Lang, Christopher Lee Satori, John Alexander Werner, IV, Cathleen Mae Uttecht, Mickey Joseph Authement, II, Peter Lee Carson, Jeremy Michael Brunette, Kenneth John Zwick, Elizabeth Oriel Bradley
  • Patent number: 8821687
    Abstract: A flushable article such as a wipe that includes a substrate that includes fibers, and a dried binder composition in contact with the fibers, the article (e.g., wipe) being insoluble in water having a pH of no greater than 6, and disintegrating in water having a pH of at least 6.5.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: September 2, 2014
    Assignee: H.B. Fuller Company
    Inventors: Mutombo J. Muvundamina, Brian W. Carlson
  • Patent number: 8815054
    Abstract: The invention relates to the making of a cellulosic fibrous structure by adding a waterborne shape memory polymer to cellulosic papermaking slurry and forming a web from the waterborne shape memory polymer containing slurry. The web can be optionally foreshortened.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: August 26, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Ward William Ostendorf, Patrick Thomas Mather, Pamela Tiffany Wilson, Kazuki Ishida
  • Publication number: 20140216671
    Abstract: A modified filler composition used in papermaking is provided. The modified filler composition contains microfibrillated cellulose, and filler having negative charge, and a cationic polymer.
    Type: Application
    Filed: January 21, 2014
    Publication date: August 7, 2014
    Applicant: Goldeast Paper (Jiangsu) Co., Ltd
    Inventors: YAN FENG, DEQUANJIANG
  • Patent number: 8784611
    Abstract: The invention relates to a process for the production of paper or board comprising: adding a retention system to a stream of stock entering a paper machine head box, directing the stream of stock to a wire, de watering the stream of stock on the wire to form a paper web, and drying the paper web, wherein the retention system comprises a water-soluble cationic polymer, and nanocellulose acting like a micro particle, wherein the nanocellulose is added in an amount of less than 1% as active substance based on dry solids weight of the stock.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: July 22, 2014
    Assignee: Kemira OYJ
    Inventors: Ari Juppo, Ulf Stenbacka
  • Patent number: 8778086
    Abstract: A method of cleaning residue from a surface using a disposable cellulosic wiper that includes from about 25% or more by weight of pulp-derived papermaking fibers. The pulp-derived papermaking fibers have a characteristic scattering coefficient of less than 50 m2/kg. The wiper also has from about 25% to about 75% by weight of fibrillated regenerated independent cellulosic microfibers. The fibers are finer than 14 mesh, have a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml, have a number average diameter of less than about 2 microns, and are present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg. The wiper is applied, with a predetermined amount of pressure, to a residue-bearing surface. The surface is wiped with the applied wiper to remove residue from the surface, such that the surface has less than 1 g/m2 of residue after being wiped.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: July 15, 2014
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Daniel W. Sumnicht, Joseph H. Miller
  • Patent number: 8758563
    Abstract: A method of making a nonwoven fibrous mat that retains good strength and recovery after scoring and folding, properties making the mat useful in making collapsible ceiling tile. The mat comprises a majority of glass fibers and a minority of polymer fibers, the fibers being bound together with up to 35 wt. percent of a polyacrylic acid and polyol polymer binder based on the dry weight of the mat. The mat can be cured to “B stage”, thermoformed into the desired shape and then heated further to complete the cure of the binder.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: June 24, 2014
    Assignee: Johns Manville
    Inventors: Alan Michael Jaffee, Richard Emil Kajander
  • Patent number: 8715465
    Abstract: A process for making paper, comprising contacting an anionic binder with a cationizing agent to make a cationized binder, contacting the cationized binder with an anionic pigment to form a binder/pigment agglomerate, contacting the agglomerate with an aqueous slurry of fibers, and forming a paper product from the slurry. The agglomerate may reduce the total cost of the paper product being produced while maintaining the strength of the paper at acceptable levels.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: May 6, 2014
    Assignee: Styron Europe GmbH
    Inventors: Jouko Vyorykka, Pekka Salminen, Jonathan Budd
  • Publication number: 20140116635
    Abstract: Methods of making paper or paperboard having enhanced dry strength are provided. An enzyme and a polymer including at least one of a cationic water-soluble polymer and an amphoteric water-soluble polymer can be added to a papermaking pulp to yield a treated pulp. The treated pulp can then be formed into paper or paperboard having a dry strength greater than paper or paperboard formed from papermaking pulp without the addition of the enzyme and polymer. Any suitable enzyme can be used, for example, a laccase or a cellulase. Any suitable polymer can be used. For example, at least one of a glyoxylated polyacrylamide (gPAM), a polyvinylamine, a decarboxylated polyacrylamide, and a dimethylamine-epichlorohydrin (epi-DMA).
    Type: Application
    Filed: September 11, 2013
    Publication date: May 1, 2014
    Applicant: Buckman Laboratories International, Inc.
    Inventors: Rita De Cassia Bortoto Porto, Erika Barbosa Neves Graminha, Juliano Lopes Dos Santos, Tiago Pereira Goncalves
  • Publication number: 20140102649
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicant: BASF SE
    Inventor: Anton ESSER
  • Patent number: 8647471
    Abstract: The present invention relates to a process for the production of sized and/or wet-strength papers, paperboards or cardboards, wherein an aqueous radiation-curable dispersion containing water and at least one polymer, characterized in that the polymer contains cationic groups, is mixed with suspended wood pulp and/or chemical pulp and this mixture is sieved, pressed, thermally dried and then radiation-cured, characterized in that the dispersion is employed in amounts, based on its non-aqueous content in relation to the solid content of the wood pulp and/or chemical pulp, of from 0.001 to 10 wt. %, the papers, paperboards and cardboards produced by this process, and compositions comprising suspended wood pulp and/or chemical pulp and an aqueous radiation-curable dispersion containing at least one polymer, characterized in that the polymer contains cationic groups.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: February 11, 2014
    Assignees: Bayer MaterialScience LLC, Bayer MaterialScience AG
    Inventors: Stefan Sommer, Erhard Luehmann, Serkan Unal, Micheal J. Dvorchak
  • Patent number: 8613836
    Abstract: A process is provided for making a fluff pulp sheet, comprising contacting at least one cationic trivalent metal, salt thereof, or combination thereof with a composition comprising fluff pulp fibers and water at a first pH, to form a first mixture; contacting at least one debonder surfactant with the first mixture and raising the pH to a second pH, which is higher than the first pH, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to make the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic trivalent metal, salt thereof, or combination thereof; at least one debonder surfactant; and a fiberization energy of <145 kJ/kg. Products and uses of the fluff pulp sheet are also provided.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: December 24, 2013
    Assignee: International Paper Company
    Inventors: James E. Sealey, Michael Hevenor
  • Patent number: 8613832
    Abstract: The present invention relates to a drainage and retention aid composition which comprises: (d) a first anionic component which is a water-soluble anionic organic polymer; (e) a second anionic component which is a water-dispersible or branched anionic organic polymer; and (f) a third anionic component which is an anionic siliceous material; wherein the first, second and third anionic components are present in a dry matter content of from 0.01 to 50% by weight.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: December 24, 2013
    Assignee: Akzo Nobel N.V.
    Inventors: Johan Nyander, Fredrik Solhage
  • Patent number: 8613833
    Abstract: Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex with a glass transition temperature of ?5 to ?50° C., preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: December 24, 2013
    Assignee: BASF SE
    Inventors: Juergen Schmidt-Thuemmes, Anton Esser, Joerg Nieberle
  • Patent number: 8529732
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of a water-soluble cationic polymer and of an anionic polymer to a paper stock, draining of the paper stock and drying of the paper products, wherein an aqueous dispersion of at least one anionic latex and at least one degraded starch is used as the anionic polymer.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: September 10, 2013
    Assignee: BASF SE
    Inventors: Anton Esser, Joerg Nieberle
  • Patent number: 8524042
    Abstract: A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Hercules Incorporated
    Inventors: Fushan Zhang, Tien-Feng Ling
  • Patent number: 8518215
    Abstract: Vinylamine-containing polymers are disclosed where the amine groups are substituted with cationic functional groups. Processes for preparing such polymers, as well as compositions comprising such polymers are also disclosed. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Hercules Incorporated
    Inventors: Jonathan M. McKay, Qu-Ming Gu, Richard J. Riehle
  • Patent number: 8518216
    Abstract: Methods for making a heterogeneous polymer blend comprising one or more anionic polymers, one or more cationic polymers, and one or more non-ionic polymers, which method comprises (a) adding to a non-neutral solution a first amount of polymerization initiator and one or more anionic or cationic monomers, wherein each monomer has the same charge; (b) a second amount of the polymerization initiator and one or more non-ionic monomers; (c) adding a third amount of the polymerization initiator and one or more ionic monomers that are oppositely charged from the monomers of (a); adding stepwise, a fourth amount of the polymerization initiator to react any residual monomer, and (e) neutralizing the resulting polymer blend. Also claimed are heterogeneous polymer blends containing polymers formed from one or more anionic, cationic, and non-ionic monomers, either polymerized in situ or separately and then combined.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: August 27, 2013
    Assignee: Hercules Incorporated
    Inventors: Frank J. Sutman, Joseph Mahoney
  • 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: 8512519
    Abstract: Sulfopolyester thermoplastic resins provide advantages in papermaking processes and in paper products including paperboard. Improvements in wet strength and dry strength of paper products are achieved by addition of sulfopolyester thermoplastic resins and cationic strength additives during the paper making process. The use of sulfopolyester thermoplastic resins in paper products also significantly enhances the repulpability of the paper.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 20, 2013
    Assignee: Eastman Chemical Company
    Inventors: Rakesh Kumar Gupta, Daniel William Klosiewicz, Melvin Glenn Mitchell, Marvin Lynn Mitchell
  • Patent number: 8486227
    Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: July 16, 2013
    Assignee: BASF SE
    Inventors: Anton Esser, Rainer Blum, Joachim Kuhn, Marc Leduc, Ralf Hemel
  • Patent number: 8475630
    Abstract: Compositions and methods of producing an optically-enhanced paper-based material are disclosed. The composition can include an optical brightening agent and an additive having an aromatic portion, where the aromatic portion is associated with an optical brightening agent. The paper-based material can exhibit a higher capacity for the optical brightening agent relative to a paper-based material that lacks the additive. Techniques for increasing optical brightening agent retention in a paper-based material are also disclosed. The techniques include using an additive having an aromatic portion, where the aromatic portion associates with an optical brightening agent so that the retention of the optical brightening agent is improved.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: July 2, 2013
    Assignee: NanoPaper, LLC
    Inventors: Lynn Reis, Gangadhar Jogikalmath, David S. Soane
  • Patent number: 8465584
    Abstract: An aqueous slurry of finely divided fillers which are at least partly coated with anionic latices, wherein the slurry is obtainable by treating an aqueous slurry of finely divided fillers with an aqueous dispersion comprising at least one anionic latex and at least one degraded starch, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: June 18, 2013
    Assignee: BASF SE
    Inventors: Joerg Nieberle, Anton Esser
  • Patent number: 8460512
    Abstract: The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: June 11, 2013
    Assignee: International Paper Company
    Inventors: Agne Swerin, Michael Herman, Jay C Song, Sen Yang, Peter F Lee, Ladislav Bednarik
  • Patent number: 8454798
    Abstract: A method is described for making paper or paper board by applying a composition containing enzyme and cationic coagulant to papermaking pulp prior to paper forming to preferably improve drainage, retention, or both. Sheets of pulp from which paper or paperboard products are made with the method can exhibit excellent drainage, excellent retention of pulp fines, or both. The method also can be applied to other pulp treatments, such as waste water treatments. A system for making such treatments of paper furnish is also provided.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: June 4, 2013
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Weiping Ban, Gary Headrick, Rosa M. Covarrubias
  • Patent number: 8449721
    Abstract: Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex which comprises, incorporated in the form of polymerized units, at least one monomer comprising phosphonic and/or phosphoric acid groups, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 28, 2013
    Assignee: BASF SE
    Inventors: Juergen Schmidt-Thuemmes, Anton Esser, Joerg Nieberle