Nitrogen Containing Patents (Class 162/164.6)
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Publication number: 20150068696Abstract: Paperboards having improved MD and CD bending stiffness by including a paperboard binder coalescing agent to cause starch paperboard binder to coat at least some of the paperboard fibers. Also a method for preparing these improved bending stiffness paperboards by combining with an untreated paperboard fiber stream a treated paperboard fiber stream where at least some/at least a portion of the paperboard fibers are coated with a starch paperboard binder due to the coalescing action of a paperboard binder coalescing agent.Type: ApplicationFiled: July 8, 2014Publication date: March 12, 2015Inventors: DAVID V. REED, DAVID A. DYER
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Publication number: 20150068697Abstract: The invention relates to a method for dissolving cationic starch. In the method is obtained an aqueous polyelectrolyte solution comprising a synthetic cationic polymer, which has a charge density value of at least 0.1 meq/g, determined at pH3, the concentration of the cationic polymer in the polyelectrolyte solution being >2.5 weight-%, and the aqueous polyelectrolyte solution is brought together with cationic starch having a degree of substitution, DS, >0.1. The cationic starch is dissolved to the polyelectrolyte solution by heating and/or mixing. The invention relates also to a papermaking agent comprising 2-40 weight-% of synthetic cationic polymer which has a charge density value of at least 0.1 meq/g, determined at p H 3, and 2.5-25 weight-% cationic starch having degree of substitution, DS, >0.1. The papermaking agent is in slurry form and has a viscosity of 50-20 000 m Pas, measured at 25° C. with Brookfield DVI+ viscometer.Type: ApplicationFiled: March 22, 2013Publication date: March 12, 2015Inventors: Asko Karppi, Esko Tirronen
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Patent number: 8974636Abstract: A fluff pulp or other pulp, comprises a multivalent cationic metal ion selected from the group consisting of Al+3, B+3, Mn+2, Cu+2, Cu+3, Zn+2, Sn+2, Sn+4, water-soluble salt thereof, or combination thereof; an amine-containing anti-static agent; and pulp. Methods of making and using the pulp, as well as articles therefrom, are provided.Type: GrantFiled: June 13, 2013Date of Patent: March 10, 2015Assignee: International Paper CompanyInventors: James E. Sealey, Peter M. Froass, Sylvie Marie Rita Carriere
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Patent number: 8974637Abstract: 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: GrantFiled: June 5, 2012Date of Patent: March 10, 2015Assignee: Akzo Nobel Chemicals International B.V.Inventor: Patrik Simonson
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Publication number: 20150027651Abstract: 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: ApplicationFiled: August 6, 2014Publication date: January 29, 2015Applicant: BASF SEInventors: Christian JEHN-RENDU, Joachim Hege, Detlef Kannengiesser
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Publication number: 20150020988Abstract: 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: ApplicationFiled: October 6, 2014Publication date: January 22, 2015Applicant: ECOLAB USA INC.Inventors: Michael R. St. John, David J. Castro, Mei Liu
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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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Publication number: 20150000852Abstract: The disclosure provides a dispersion for making décor paper having improved optical performance without negatively impacting mechanical strength comprising 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 1.5 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). These dispersions are useful in making décor paper that may be used in paper laminates.Type: ApplicationFiled: January 9, 2013Publication date: January 1, 2015Inventors: Mitchell Scott Chinn, Franck Andre Vanhecke
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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: 8906201Abstract: The present invention relates to a method of manufacturing paper or cardboard, wherein paper or board pulp is diluted with an aqueous composition, which is formed from colloidal-size particles of carbonate and bicarbonate, and other states of carbonate in an aqueous solution, so that the pH in the aqueous solution remains essentially at a value of 6.0-8.3 during the formation, and water is removed from the pulp by draining, pressing, and drying. The invention also relates to a method of manufacturing the aqueous composition used for this purpose.Type: GrantFiled: April 21, 2011Date of Patent: December 9, 2014Assignee: Nordkalk Oy AbInventors: Sakari Saastamoinen, Pentti Virtanen
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Publication number: 20140352904Abstract: Embodiments of the invention provide for paper mill equipment that can better withstand the conditions of a paper Mill. Embodiments encompass paper mill equipment that incorporate a polyurethane layer having a hysteresis value of less than 70% and a permanent set of less than 30%. The polyurethane layer includes a polyurethane produced by curing a mixed composition. The mixed composition includes at least a urethane prepolymer (A) and at least a curing agent (B) having an active hydrogen group (H). The urethane prepolymer (A) has at least one terminal isocyanate group and is obtained by reacting at least a polyisocyanate compound (a) with at least a polycarbonate diol compound (b) having a number average molecular weight of at least 1500 g/mol. The curing agent (B) includes at least an amine compound. The elastomer compositions are also useful to coat the acid pickling roller in the steel industry.Type: ApplicationFiled: February 27, 2013Publication date: December 4, 2014Applicant: Dow Global Technologies LLCInventors: Harpreet Singh, William H. Heath, Amarnath Singh, Asfar N. Chowdhury, Marcin Grigoriew, Kaoru Aou
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Patent number: 8901245Abstract: Methods for forming rosin-derived cationic compounds are provided. The method can include attaching a cationic group to a conjugated diene on a hydrophenathrene-based ring of a resin acid (e.g., levopimaric acid, abietic acid, dehydroabietic acid, or a mixture thereof) to form a rosin-derived cationic compound. Attaching the cationic group to the conjugated diene on the hydrophenathrene-based ring of the resin acid can be achieved via a Diels-Alder reaction of a dienophile with the hydrophenathrene-based ring of the resin acid. Rosin-derived cationic compounds are also provided. The rosin-derived cationic compound can include a cationic group attached to a conjugated diene on a hydrophenathrene-based ring of a resin acid, wherein the rosin-derived cationic compound further comprises a carboxylic acid group.Type: GrantFiled: December 10, 2013Date of Patent: December 2, 2014Assignee: University of South CarolinaInventors: Chuanbing Tang, Jifu Wang, Alan W. Decho, Yung Pin Chen
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Publication number: 20140345817Abstract: The invention relates to a process for making paper or paper board comprising forming a cellulosic suspension, flocculating the suspension, draining the suspension on a device to form a sheet and then drying the sheet, characterised in that the suspension is flocculated using a formation improving 3-component flocculation system comprising a) a linear cationic or ampoteric co-polymer of i) acrylamide, and ii) a substance with formula (I) with a halide as counter-ion; b) at least one water soluble component chosen from the group of anionic polyacrylamide non ionic polyacrylamide and polyethyleneoxide; and c) inorganic microparticles, whereby the flocculation system does not contain a wafer-dispersible or branched anionic organic polymer. The invention also relates to use of the flocculation/retention system in the manufacture of paper or paper board, and to paper and paper board thus produced.Type: ApplicationFiled: December 17, 2012Publication date: November 27, 2014Inventors: Tom Lindström, Anna Svedberg, Mikael Ankerfors
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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: 8894816Abstract: Surfactant mediated, free radical initiated emulsion/dispersion polymerization of n-vinylformamide with styrene or substituted styrene copolymers, and its subsequently hydrolyzed products bearing formamide, amine and styrenic functionality are disclosed. Processes for polymerization, polymer composition, and hydrolysis of such polymers are also disclosed. These polymers bearing cationic functionality can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, sizing agent, sizing promoter and pitch and stickies control agents.Type: GrantFiled: November 1, 2012Date of Patent: November 25, 2014Assignee: Solenis Technologies, L.P.Inventor: Sachin Borkar
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Publication number: 20140338852Abstract: 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: ApplicationFiled: October 11, 2012Publication date: November 20, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: Michael Patrick Diebold
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Patent number: 8888956Abstract: The disclosure provides a paper slurry comprising a treated inorganic pigment, wherein the treated inorganic pigment comprises an inorganic pigment comprising a pigment surface area of about 30 to about 75 m2/g; wherein the pigment surface is treated with an organic treating agent comprising a polyalkanol alkane or a polyalkanol amine, present in the amount of at least about 1.5%, and wherein the treated inorganic pigment has a RHI (rat hole index) of about 7 to about 11.Type: GrantFiled: April 24, 2012Date of Patent: November 18, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Daniel C Kraiter, Michael Patrick Diebold, Timothy Allan Bell
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Patent number: 8871055Abstract: Disclosed is a sizing composition comprising a hydrophobic paper sizing agent and a hydrophobically modified poly(aminoamide). Also disclosed is a method of making the sizing composition and a method of using the sizing composition.Type: GrantFiled: March 30, 2012Date of Patent: October 28, 2014Assignee: Solenis Technologies, L.P.Inventor: Susan M. Ehrhardt
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Publication number: 20140262090Abstract: Disclosed herein are methods of increasing retention and drainage in papermaking processes using high molecular-weight, water-soluble polymers.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: Ecolab USA Inc.Inventors: Brett Brotherson, Peter E. Reed, Xiaojin Harry Li, William J. Andrews, Mingli Wei
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Publication number: 20140272340Abstract: The present invention relates to a low-tension cover layer intended for a laminate material and comprising a resin-impregnated, printed or unprinted decorative paper or comprising a resin-impregnated overlay paper or comprising a combination of the two, where the resin in each case comprises a mixture of at least one aminoplastic resin and at least one water-soluble or water-dispersible synthetic polymer selected from the group consisting of polyvinyl resin, polyvinyl acetate, and polyvinyl alcohol. The invention further relates to the use of the low-tension cover layer of the invention for the construction of a laminate material with appropriate balancing.Type: ApplicationFiled: September 24, 2012Publication date: September 18, 2014Applicant: DARKOR MELAMIN IMPRAGNIERUNGEN GMBHInventors: Elmar Beck, Detlef Andreas Wentzel
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Publication number: 20140262091Abstract: One or more embodiments include paper, methods of making paper, compositions, and the like, are provided. In various exemplary embodiments described herein, a paper material may be formed by treating a cellulosic fiber or an aqueous pulp slurry, with a strength including a polyamine resin.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Inventors: Chen Lu, Scott Rosencrance, Vladimir Grigoriev
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Publication number: 20140262092Abstract: A cellulose and/or synthetic fibre-based support of which at least one surface is coated with a layer containing at least one water-soluble polymer comprising hydroxyl or primary-secondary amino functional groups, at least some of which have been functionalized beforehand with at least one organic compound comprising at least one epoxy functional group, and at least one R1 group wherein R1 is a vinyl functional group or at least one Si(R2)3 functional group and wherein R2=hydrogen atom, hydroxyl, alkoxy, alkyl, and combinations thereof.Type: ApplicationFiled: July 20, 2012Publication date: September 18, 2014Applicant: MUNKSJÖ OYJInventor: Diego Fantini
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Patent number: 8834680Abstract: The present invention relates to a filler composition comprising a) a filler, b) a cationic inorganic compound, c) a cationic organic compound, and d) an anionic polysaccharide, wherein the filler is present in an amount of at least about 1% by weight, based on the total weight of the composition, the anionic polysaccharide is present in an amount of about 1 to about 100 kg/ton, based on the weight of filler, and wherein the composition is substantially free from fibers.Type: GrantFiled: July 14, 2008Date of Patent: September 16, 2014Assignee: AKZO Nobel N.V.Inventors: Patrik Simonson, Michael Persson
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Patent number: 8834678Abstract: 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: GrantFiled: March 20, 2012Date of Patent: September 16, 2014Assignee: 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
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Patent number: 8834679Abstract: The present invention provides a modified cellulosic fiber having reduced hydrogen bonding capabilities. The modified fiber formed in accordance with the present invention may be useful in the production of tissue products having improved bulk and softness. More importantly, the modified fiber is adaptable to current tissue making processes and may be incorporated into a tissue product to improve bulk and softness without an unsatisfactory reduction in tensile.Type: GrantFiled: December 26, 2012Date of Patent: September 16, 2014Assignee: Kimberly-Clark Worldwide, Inc.Inventors: JeongKyung Kim, SeungRim Yang, Jian Qin, Deborah Joy Calewarts
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Patent number: 8815054Abstract: 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: GrantFiled: October 5, 2012Date of Patent: August 26, 2014Assignee: The Procter & Gamble CompanyInventors: Ward William Ostendorf, Patrick Thomas Mather, Pamela Tiffany Wilson, Kazuki Ishida
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Patent number: 8790493Abstract: The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibers, (viii) adding to the suspension after all points of high shear a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer, and a third polymer being an organic or inorganic anionic polymer; and (ix) dewatering the obtained suspension to form paper.Type: GrantFiled: October 10, 2012Date of Patent: July 29, 2014Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Publication number: 20140202647Abstract: Compositions that include hydrophobizing agents and stabilizers and methods for making and using same are provided. In at least one specific embodiment, a composition can include about 40 wt % to about 60 wt % lignosulfonic acid or a salt thereof, about 1 wt % to about 20 wt % of a hydrophobizing agent, and about 20 wt % to about 59 wt % of a liquid medium, where all weight percents are based on the combined weight of the lignosulfonic acid or salt thereof, the hydrophobizing agent, and the liquid medium.Type: ApplicationFiled: December 19, 2013Publication date: July 24, 2014Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, Adam K. Sniady, David F. Townsend, Bobby L. Williamson
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Patent number: 8778086Abstract: 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: GrantFiled: March 27, 2012Date of Patent: July 15, 2014Assignee: Georgia-Pacific Consumer Products LPInventors: Daniel W. Sumnicht, Joseph H. Miller
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Patent number: 8778140Abstract: A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises use of microparticle prior to, simultaneous to, and/or after addition of a first flocculating agent to an aqueous dispersion of filler particles, followed by addition of a second flocculating agent to the dispersion and further optional shearing of the resultant filler flocs to the desired particle size resulting in shear resistant filler flocs with a defined and controllable size distribution. In addition, a neutralizing coagulant can be added to the dispersion to partially or completely neutralize the charge of the filler before the microparticle and/or the first flocculating agent is added.Type: GrantFiled: November 1, 2012Date of Patent: July 15, 2014Assignee: Nalco CompanyInventors: Weiguo Cheng, Katherine M Broadus, Dorota Smoron, Shawnee M Wilson
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Patent number: 8771467Abstract: A carrier-tape base paper making method and the base paper made thereby fall into the technical field of papermaking. According to performance requirements, the base paper is made through pulp conditioning and papermaking, in which different pulping and auxiliary materials for surface, intermediate and bottom layers are added. The method includes such steps as beating, conditioning, papermaking, calendering and reeling. The carrier-tape base paper features high strength, perfect waterproof and bonding performance, limited physical damages to electronic elements and satisfactory resilience.Type: GrantFiled: March 12, 2012Date of Patent: July 8, 2014Assignee: Zhejiang Jiemei Electronic & Technology Co., LtdInventor: Junyun Fang
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Publication number: 20140182800Abstract: The invention provides a method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in a papermaking process The method improves the efficiency of drainage aids or wet web strength aids or wet strength aid by coating at least some of the filler particles with a natural gum and with a material that prevents the filler materials form adhering to those additives. The drainage additive or wet web strength additive or wet strength aid holds the cellulose fibers together tightly and is not wasted on the filler particles.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Inventors: David J. Castro, Weiguo Cheng
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Publication number: 20140182799Abstract: 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: ApplicationFiled: December 28, 2012Publication date: July 3, 2014Inventors: David J. Castro, Mei Li, Gary S. Furman, Dorota Smoron, Shawnee M. Wilson, Zhiyi Zhang
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Publication number: 20140178707Abstract: A paper coating or binding formulation comprises an aqueous polymer dispersion comprising a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent. The carbohydrate derived compound can be selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. Methods of preparing a paper coating or binding formulation and improving the whitening properties of paper are also provided. Furthermore, paper including a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent is also disclosed.Type: ApplicationFiled: October 8, 2013Publication date: June 26, 2014Applicant: BASF SEInventors: Peter C. Hayes, Ralph Lewis De Jong
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Patent number: 8758563Abstract: 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: GrantFiled: August 30, 2012Date of Patent: June 24, 2014Assignee: Johns ManvilleInventors: Alan Michael Jaffee, Richard Emil Kajander
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Publication number: 20140166223Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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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: 8747616Abstract: The invention is directed towards methods and compositions for improving the sizing of paper using PAE. Proper sizing of paper requires that a sizing agent adequately disperse so as to evenly distribute on the paper. Proper sizing also requires that the agent not cause runnability or chemical problems with other materials or equipment used in the papermaking process. PAE displays unexpected attributes that allow it to disperse sizing agents. Best of all it is not subject to the same overdose effect of typical emulsifiers such as cationic starch. As a result PAE is an excellent option for use in sizing paper.Type: GrantFiled: September 12, 2012Date of Patent: June 10, 2014Assignee: Ecolab USA IncInventors: Gary S. Furman, Jr., Robert M. Lowe, David J. Castro
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Patent number: 8734616Abstract: Cationic or amphoteric (co)polymer obtained by Hofmann degradation reaction, in aqueous solution, in the presence of an alkaline-earth and/or alkali metal hydroxide and of an alkaline-earth and/or alkali metal hypohalide, on a base (co)polymer comprising at least one nonionic monomer chosen from the group comprising acrylamide (and/or methacrylamide) and N,N-dimethylacrylamide, is characterized in that the base (co)polymer is modified beforehand with at least one polyfunctional compound containing at least 3 heteroatoms chosen from N, S, O and P and each having at least one mobile hydrogen. Use as a flocculation, retention and/or drainage aid, and dry strength aid is contemplated.Type: GrantFiled: August 3, 2010Date of Patent: May 27, 2014Assignee: S.P.C.M. SAInventors: René Hund, Christophe Auriant
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Publication number: 20140130994Abstract: 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: ApplicationFiled: November 15, 2012Publication date: May 15, 2014Applicant: ECOLAB USA INC.Inventors: Michael R. St. John, David J. Castro, Mei Liu
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Publication number: 20140134427Abstract: The disclosure provides a paper slurry comprising a treated inorganic particle having reduced photoactivity and improved anti-microbial properties, wherein the treated inorganic pigment comprises: an inorganic core particle; a first treatment of a silicon compound, wherein the silicon compound is added in a single step; and a second treatment comprising a co-precipitated zinc oxide and alumina.Type: ApplicationFiled: June 20, 2012Publication date: May 15, 2014Applicant: EI DU PONT DE NEMOURS AND COMPANYInventors: Charles David Musick, Peter Jernakoff
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Publication number: 20140124154Abstract: 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 fibres; 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: ApplicationFiled: June 5, 2012Publication date: May 8, 2014Inventor: Patrik Simonson
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Publication number: 20140124153Abstract: The disclosure is directed toward methods for delivering a pigment dispersion and an inverted retention aid emulsion to a papermaking process. The method comprises injecting the pigment dispersion and the inverted retention aid emulsion into a process line of the papermaking process. The pigment dispersion comprises titanium dioxide, and the retention aid may comprise an anionic flocculant. The process line is located downstream from a screen and upstream from a headbox. The methods may incorporate the use of one or several nozzle devices.Type: ApplicationFiled: November 1, 2013Publication date: May 8, 2014Applicant: Ecolab USA Inc.Inventors: William A. Granger, George L. Dennis, Tommy Jacobson
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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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Publication number: 20140102651Abstract: Methods for making and using aqueous dispersions for imparting grease/oil resistance to paper, paperboard and cellulose fiber products generally are provided. In particular, there are provided aqueous colloidal dispersions comprising nanoparticles of at least one colloidal clay and an aqueous fluorochemical, which can be applied to, on, or in paper, paperboard and cellulose fiber products. The paper and products that have been modified using these aqueous dispersions have good resistance to oil and grease penetration with lower overall amounts of aqueous fluorochemicals being required. Additional methods for imparting grease/oil resistance to paper, paperboard and cellulose fiber products generally are provided.Type: ApplicationFiled: October 9, 2013Publication date: April 17, 2014Applicant: Georgia-Pacific Chemicals LLCInventors: James W. Johnston, David F. Townsend, Cornel Hagiopol, Lakeisha D. Talbert, Charles G. Ruffner
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Patent number: 8697790Abstract: A composition includes a dispersion, having an aqueous phase containing a dissolved water soluble cationic coagulant polymer and if needed a dissolved inorganic salt. The aqueous phase further contains a dispersed water soluble flocculant polymer, wherein the water soluble flocculant polymer is formed of a water soluble ethylenically unsaturated monomer or monomer blend which are polymerized in the aqueous phase. The water soluble cationic coagulant polymer is cationic poly(alkyleneamine), which is the reaction product of the following reaction: H2N—(CH2)m—NR—(CH2)m—NH2+Cl—CH2CH2—Cl, wherein R is selected from the group consisting alkyl radicals containing from 1 to 4 carbon atoms m is an integer of from 1 to 4. The amount of dissolved inorganic salt is less than 10% by weight of the composition, and the composition is in a stable, pourable, dispersion form.Type: GrantFiled: August 8, 2012Date of Patent: April 15, 2014Assignee: Kemira OyjInventors: Marco Polverari, Anneli Lepo, Michael O'Toole
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Publication number: 20140096926Abstract: A method for making fibrous structures. The method includes the steps of: (a) providing a fibrous furnish comprising papermaking fibers, the fibrous furnish containing, in addition to water and cellulosic fibers, from about 0.1% to about 15% waterborne shape memory polymer; (b) depositing the fibrous furnish onto a foraminous member such that an embryonic fibrous web is formed; (c) associating the embryonic web with a molding member comprising discrete deflection cells or substantially continuous deflection conduits; (d) deflecting the fibers in the embryonic fibrous web into the discrete deflection cells or substantially continuous deflection conduit and removing water from the embryonic web through the discrete deflection cells or substantially continuous deflection conduit so as to form an intermediate fibrous web; (e) optionally, drying the intermediate fibrous web; and (f) optionally, foreshortening the intermediate fibrous web.Type: ApplicationFiled: October 5, 2012Publication date: April 10, 2014Inventors: Ward William OSTENDORF, Patrick Thomas MATHER, Pamela Tiffany WILSON, Kazuki ISHIDA
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Publication number: 20140090791Abstract: This technology relates to a method of sizing paper through the use of an aqueous solution of ketene dimer and vinylamine-containing polymers. It also relates to the stability of the ketene dimer/polyvinylamine solution.Type: ApplicationFiled: December 5, 2013Publication date: April 3, 2014Applicant: HERCULES INCORPORATEDInventors: Susan M. Ehrhardt, Kyle Bottorff
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Publication number: 20140069600Abstract: The invention is directed towards methods and compositions for improving the sizing of paper using PAE. Proper sizing of paper requires that a sizing agent adequately disperse so as to evenly distribute on the paper. Proper sizing also requires that the agent not cause runnability or chemical problems with other materials or equipment used in the papermaking process. PAE displays unexpected attributes that allow it to disperse sizing agents. Best of all it is not subject to the same overdose effect of typical emulsifiers such as cationic starch. As a result PAE is an excellent option for use in sizing paper.Type: ApplicationFiled: September 12, 2012Publication date: March 13, 2014Inventors: Gary S. Furman, JR., Robert M. Lowe, David J. Castro