Fiber Supplied Constituent Patents (Class 162/163)
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Patent number: 10487427Abstract: There is provided a system and method for manufacturing continuous strand fiberglass of progressive density with varying skins. Glass media is melted into molten glass within a temperature controlled melter, the molten glass exits the melter through orifices of a bushing plate, which is oriented 6 degrees relative to the axis of a rotating drum. A rotating drum receives the molten glass exiting the bushing plate, and resin and water are applied. The fiberglass media is fed through rollers before it enters a curing oven.Type: GrantFiled: August 29, 2016Date of Patent: November 26, 2019Assignee: Superior Fibers, LLCInventors: Charles Douglas Spitler, Rodney Ray Wilkins
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Patent number: 10253214Abstract: The current method relates to compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems. The current method also relates to controlling the deposition of organic contaminants on equipment in the pulp and papermaking systems, which can cause both quality and efficiency problems. In particular the method relates to the use of non-sulfonated or slightly sulfonated lignin dispersions and solutions for inhibiting deposition of contaminants in pulp and paper making system.Type: GrantFiled: June 24, 2016Date of Patent: April 9, 2019Assignee: SOLENIS TECHNOLOGIES, L.P.Inventors: Tien-Feng Ling, Zhaoqing Liu, Kyle J Bottorff
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Patent number: 9774038Abstract: A binder resin for a nonaqueous secondary battery electrode of the invention satisfies Is?30 (Is indicates a sum of scattering intensities observed in a particle size range of from 1 to 100 nm) when a solution is formed by dissolving the binder resin in water at a concentration of 5% by mass and particle size distribution is measured by a dynamic light scattering method at 25° C. The binder resin contains a polymer (B) having a structural unit represented by the following Formula (11) and a specific structural unit. The binder resin also contains a polymer (?) having a specific structural unit and a structural unit represented by the following Formula (22), and/or a mixture of a polymer (?1) having a specific structural unit and a polymer (?2) having a structural unit represented by the following Formula (22).Type: GrantFiled: November 30, 2012Date of Patent: September 26, 2017Assignee: Mitsubishi Chemical CorporationInventors: Haruki Okada, Mitsufumi Nodono, Hikaru Momose, Fumino Momose, Fumiko Fujie, Akikazu Matsumoto, Daisuke Fujikawa, Ayako Shimonaka, Akihiro Ishii
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Patent number: 9671367Abstract: The invention relates generally to polymers and copolymers comprising N-vinylamide-type monomers, their preparation, and compositions, such as electrophoresis separation media, containing the same; to supports, such as capillaries, containing these polymers; and methods for separating a mixture of biomolecules, especially polynucleotides, using capillary electrophoresis. Separation media comprising such polymers yield advantageous performance in the analysis and separation of biomolecules by capillary electrophoresis.Type: GrantFiled: January 6, 2014Date of Patent: June 6, 2017Assignee: Applied Biosystems, LLCInventor: Aldrich N. K. Lau
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Publication number: 20150101769Abstract: A method for preparing aqueous furnish to be used in paper or paper board manufacturing. Filler and/or fibers are treated with cationic polyelectrolyte and nanofibrillated cellulose. The strength of the paper and the retention of the fillers in paper can be improved. A furnish prepared by a method, and a paper or a paper board manufactured from the furnish.Type: ApplicationFiled: December 17, 2014Publication date: April 16, 2015Inventors: Janne LAINE, Monika Österberg, Delphine Miquel, Leila Pohjola, Irmeli Sinisalo, Harri Kosonen
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Publication number: 20150068657Abstract: The present invention provides composite materials comprising a population of cellulose fibers complexed with an activator, and an additive comprising synthetic fibers complexed with a tethering agent, wherein the tethering agent has an affinity for the activator, and wherein an interaction between the tethering agent and the activator attaches the synthetic fibers to the cellulose fibers to form the composite material. The present invention also provides methods of manufacture for such composite materials, and methods for their use, for example in forming gypsum board composites.Type: ApplicationFiled: May 29, 2014Publication date: March 12, 2015Applicant: Soane Labs, LLCInventors: Gangadhar Jogikalmath, David S. Soane
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Patent number: 8958898Abstract: The invention embodies methods and apparatuses to monitor and control the characteristics of a creping process. The method involves measuring optical properties of various points along a creped paper sheet and converting those measurements into characteristic defining data. The invention allows for determining the magnitude and distribution of crepe structures and their frequency and distribution. This allows for the generation of information that is accurate and is much more reliable than the coarse guessing that is currently used in the industry. Feeding this information to papermaking process equipment can result in increases in both quality and efficiency in papermaking.Type: GrantFiled: November 7, 2011Date of Patent: February 17, 2015Assignee: Nalco CompanyInventors: William A. Von Drasek, Sammy Lee Archer, Gary S. Furman, Jr.
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Patent number: 8603298Abstract: A method of manufacturing coated paper which consistently performs a papermaking process, a coating process, and a flattening process and includes a coating facility formed of a combination of a roll coater coating facility and first and second coating facilities in which coating methods are different from that of the roll coater coating facility, and the roll coater coating facility is provided between the first and second coating facilities.Type: GrantFiled: May 2, 2007Date of Patent: December 10, 2013Assignee: Daio Paper CorporationInventor: Akira Nomura
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Patent number: 8059850Abstract: An exemplary condenser microphone includes a printed circuit board, a first via, a second via, and a number of through holes. The first and second vias are formed in the printed circuit board for the signal line and ground line respectively passing therethrough. The through holes are formed surrounding the first and second vias. Inner walls of the through holes are coated with a conductive material.Type: GrantFiled: July 8, 2008Date of Patent: November 15, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventor: Chao-Kai Chan
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Patent number: 7922867Abstract: Process for the production of paper, board and cardboard having high dry strength by separate addition of a polymer comprising vinylamine units and of ligninsulfonic acid and/or a ligninsulfonate to a paper stock, draining of the paper stock and drying of the paper products.Type: GrantFiled: March 9, 2007Date of Patent: April 12, 2011Assignee: BASF SEInventors: Norbert Schall, Ellen Krueger, Martin Ruebenacker
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Publication number: 20080023162Abstract: The invention relates to a method for dissolving wood, straw and other natural lignocellulosic materials in an ionic liquid solvent under microwave irradiation and/or under pressure. The invention also relates to the resulting solution and to methods for separating cellulose and other organic compounds, such as lignin and extractives, from the solution.Type: ApplicationFiled: August 13, 2004Publication date: January 31, 2008Applicant: KEMIRA OYJInventors: Vesa Myllymaki, Reijo Aksela
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Patent number: 7285184Abstract: A cellulosic pulp, method of producing the pulp, and associated paper product produced therefrom produced by providing mercerized cellulosic fibers and depositing a hemicellulose coating upon the mercerized fibers. The hemicellulose is deposited upon the fibers by combining a hemicaustic solution with the mercerized fibers in the presence of an acidifying agent. When formed into a paper sheet, the invented fibers form a highly porous paper having improved strength and reduced dusting.Type: GrantFiled: April 21, 2003Date of Patent: October 23, 2007Assignee: Rayonier, Inc.Inventors: Jian Li, Steve F. Boller
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Patent number: 7178140Abstract: Less data to transmit from a server to a virtual machine on a client is achieved by transmitting only those methods of classes that the executed application actually requires. This is accomplished by taking the classes of the targeted application and statically determining which methods of these classes, as well as of the library classes, can actually be used by the application. A method usage map of usable methods for each class is saved in a file. When the request to download is received from the client, the server consults this map and selectively transmits only those methods that are in it. This saves download time and memory space in the virtual machine and speeds up execution.Type: GrantFiled: May 31, 2002Date of Patent: February 13, 2007Assignee: Sun Microsystems, Inc.Inventor: Mikhail Dmitriev
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Patent number: 6846384Abstract: A process for sizing paper comprising adding to an aqueous suspension containing cellulosic fibers, and optional fillers, an anionic or cationic sizing dispersion, and a sizing promoter comprising a cationic organic polymer having an aromatic group; and an anionic polymer having an aromatic group selected from step-growth polymers, polysaccharides and naturally occurring aromatic polymers, wherein the sizing dispersion and sizing promoter are added separately to the aqueous suspension.Type: GrantFiled: August 6, 2001Date of Patent: January 25, 2005Assignee: Akzo Nobel N.V.Inventors: Erik Lindgren, Sten Frölich, Michael Persson
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Patent number: 6777103Abstract: A fiber cement composite material providing improved rot resistance and durability, the composite material incorporating biocide treated fibrous pulps to resist microorganism attacks. The biocide treated fibers have biocides attached to inner and outer surfaces of individualized fibers to protect the fibers from fungi, bacteria, mold and algae attacks. The biocides selected have strong affinity to cellulose and do not interfere with cement hydration reactions. This invention also discloses the formulation, the method of manufacturing and the final fiber cement products using the biocide treated fibers.Type: GrantFiled: October 2, 2001Date of Patent: August 17, 2004Assignee: James Hardie Research Pty LimitedInventors: Donald J. Merkley, Caidian Luo
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Publication number: 20020104632Abstract: The present invention is generally directed to an opaque tissue product and a process for making the same. The tissue products of the present invention comprise thermally expandable microspheres which impart increased opacity to the tissues. The thermally expandable microspheres are added to a fiber furnish during the wet end of a manufacturing process for bath tissue, facial tissue, towels, or the like.Type: ApplicationFiled: December 11, 2000Publication date: August 8, 2002Inventors: Graciela Jimenez, Alberto R. Negri
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Patent number: 6309509Abstract: This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: October 11, 1996Date of Patent: October 30, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood
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Patent number: 6268414Abstract: Paper sizing compositions comprising (a) cellulose-reactive size, (b) dispersant system comprising primary anionic dispersant, and secondary dispersant selected from cationic and/or non-ionic dispersant, and (c) inorganic salt.Type: GrantFiled: April 16, 1999Date of Patent: July 31, 2001Assignee: Hercules IncorporatedInventor: Tingdong Lin
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Patent number: 6228223Abstract: The present invention generally relates to an aqueous softening and antistatic agent composition comprising a quaternary ammounium compound and a biodegradable nonionic surfactant, which composition comprises a quaternary ammounium compound having the formula wherein R1 is a C6-C22 hydrocarbyl group; and X is halogen or SO42−, in a concentration of at least about 15% by weight. The surfactant is a linear alkoxylated fatty acid or a linear alkoxylated unsaturated alcohol. Furthermore a method for providing cellulosic materials with a reduced tendency to retain an electrostatic charge as well as providing said material with improved softness, wherein the cellulosic material is treated with said composition, and fluff obtainable from fluff pulp treated with the composition.Type: GrantFiled: July 30, 1998Date of Patent: May 8, 2001Assignee: Akzo Nobel NVInventors: Ingemar Thebrin, Lisbeth Ankarbratt
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Patent number: 6228217Abstract: This invention is directed to a process for preparing an aqueous papermaking suspension containing a polyelectrolyte complex comprising providing an aqueous suspension of pulp fibers containing a water-soluble cationic polymer and a water-soluble anionic polymer that are reactable in the aqueous suspension to form the polyelectrolyte complex, and a multivalent cation having at least a +3 charge, and forming the polyelectrolyte complex. It also includes the process wherein the aqueous suspension of pulp fibers contains surface active carboxyl compounds and water-soluble anionic compounds. It further includes the process wherein the aqueous papermaking suspension is sheeted and dried to obtain paper of improved strength.Type: GrantFiled: January 13, 1995Date of Patent: May 8, 2001Assignee: Hercules IncorporatedInventors: Jay A. Dickerson, Harry J. Goldy, Douglas C. Smith, Ronald R. Staib
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Shaped, plastic articles comprising a cellulose fiber, a cellulose ester, and a non-ionic surfactant
Patent number: 6193841Abstract: This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture of APG and polyether glycol in paper composed of cellulose ester fibers and cellulose fibers and to calendaring of such paper is also disclosed.Type: GrantFiled: November 30, 1998Date of Patent: February 27, 2001Assignee: Eastman Chemical CompanyInventors: Charles Michael Buchanan, Eric Eugene Ellery, Matthew Davie Wood -
Patent number: 6048438Abstract: A method for increasing the separation of solids from an aqueous slurry containing such solids is disclosed. The separation process is particularly useful in the separation of the solid components of a papermill furnish from water in the manufacture of paper. The method comprises the steps of adding to a paper mill slurry from about 0.003 to about 1.0% by weight based on total solids in the slurry of a phenolic enhancer and a nonionic (meth)acrylamide homopolymer methacrylamide, or anionic or cationic flocculant is added to the slurry in an amount of from about 0.003 to about 0.5% by weight based on total solids in the slurry. Addition order is non-critical. The flocculation of solid components of the paper mill slurry is increased leading to improved retention of filler and fiber on the sheet and increased drainage of water from the cellulosic sheet produced. The method is also applicable to the treatment of waste waters, mineral tailings, oily waste waters, municipal and industrial wastes, and the like.Type: GrantFiled: November 26, 1997Date of Patent: April 11, 2000Assignee: Nalco Chemical CompanyInventors: Scott W. Rosencrance, Przemyslaw Pruszynski, Shamel M. Shawki, Regina Jakubowski, Jeff F. Lin
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Patent number: 5810972Abstract: A method for the manufacture of creped hygienic cellulose paper, in particular. A hemicellulose containing additive, in particular galactomannan, xylan or highly milled birch pulp, is added to the pulp either prior to the pulp being deposited on the wire of the paper machine, after the pulp is deposited on the wire of the paper machine, or both before and after the pulp is deposited on the wire. As a result of this measure, the strength of the paper web thus produced and its runnability properties are substantially improved, while the softness virtually remains unchanged. In addition, the energy requirements for drying the paper web are substantially reduced.Type: GrantFiled: February 14, 1997Date of Patent: September 22, 1998Assignee: The Procter & Gamble CompanyInventors: Horst Reinheimer, Frank Rehders
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Patent number: 5789326Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.Type: GrantFiled: November 19, 1996Date of Patent: August 4, 1998Assignee: Weyerhaeuser CompanyInventors: Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 5783039Abstract: A wholly aromatic polyamide staple fiber fabric having excellent insulation and superior dimensional stability at a high temperature and/or a high humidity, includes 70 to 96 parts by weight of a staple fiber web made from a blend of 5 to 30% by weight of m-type wholly aromatic polyamide staple fibers and 70 to 95% by weight of p-type wholly aromatic polyamide staple fibers, and 4 to 30 parts by weight of an organic resin binder incorporated into the staple fiber web.Type: GrantFiled: February 14, 1997Date of Patent: July 21, 1998Assignee: Teijin LimitedInventor: Sadamitsu Murayama
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Patent number: 5753078Abstract: A method for making a surface coated or impregnated paper or paperboard by applying an aqueous additive dispersion to the wet web between the press and drying sections of a conventional paper or paperboard making machine. The aqueous additive dispersion is pre-metered onto a transfer roll and is applied to the wet web at a pressure nip between the transfer roll and a back-up roll. High solids content dispersions can be applied at high web speeds without tearing the web. The use of a high solids content aqueous dispersion having a solids content substantially equal to the solids content of the wet web at the point of application permits the method to be performed without increasing the drying load and therefore at an unreduced speed.Type: GrantFiled: June 7, 1996Date of Patent: May 19, 1998Assignee: Cartons St-Laurent, Inc./St. Laurent Paperboard, Inc.Inventors: Serge Koutitonsky, Stephane Rousseau
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Patent number: 5647956Abstract: A composition comprising aqueous cellulosic furnish, a high molecular weight cationic polymer, and a modified lignin wherein the ratio of the cationic polymer to the modified lignin is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.Type: GrantFiled: December 4, 1995Date of Patent: July 15, 1997Assignee: Calgon CorporationInventors: David L. Elliott, Wood E. Hunter, Ronald J. Falcione
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Patent number: 5589256Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.Type: GrantFiled: August 17, 1992Date of Patent: December 31, 1996Assignee: Weyerhaeuser CompanyInventors: Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 5578168Abstract: A method is provided for using an aqueous suspension of at least 15% of poly(ethylene oxide) (PEO) as a retention aid in the manufacturing of paper. PEO is dispersed in an aqueous solution of at least one salt selected from the group consisting of sodium or potassium formate, sodium or potassium hydroxide, sodium or potassium citrate, sodium or potassium acetate, sodium chloride or mixtures thereof to form a poly(ethylene oxide) suspension having at least 15% of poly(ethylene oxide) by total weigh. This suspension is dissolved in said dispersion in an aqueous system containing ferric ions or free chlorine; and said dissolved aqueous system is added to a pulp slurry for making paper just prior to forming the pulp into a wet web, whereby said aqueous suspension prevents the loss of fiber fines during the paper formation stage and resists viscosity loss due to ferric ions or free chlorine in the aqueous system.Type: GrantFiled: June 6, 1995Date of Patent: November 26, 1996Assignee: Hercules IncorporatedInventors: Charles L. Burdick, Elliott Echt
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Patent number: 5575892Abstract: A composition for improving the wet strength of cellulosic fibrous webs is comprised of an aminopolyamide-epichlorohydrin acid salt resin having an E/N ratio of from about 0.6 to about 2.0 and from about 1% to about 35% of a water soluble cationic polymer based on the weight of the resin. The composition has a total organic chlorine content of from about 0.5% to 1.0% by weight based on the weight of the aminopclyamide-epichlorohydrin acid salt resin.Type: GrantFiled: June 5, 1995Date of Patent: November 19, 1996Assignee: Henkel CorporationInventors: David I. Devore, Nancy Clungeon, Stephen A. Fischer
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Patent number: 5567277Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.Type: GrantFiled: December 4, 1995Date of Patent: October 22, 1996Assignee: Calgon CorporationInventors: David L. Elliott, Wood E. Hunter, Ronald J. Falcione
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Patent number: 5516405Abstract: First pass filler retention is obtained by adding a cationic fixative into a filler containing pulp slurry which is also treated using the conventional polyethylene oxide/promoter retention system and as a result a significant increase in the first pass retention of filler is attained.Type: GrantFiled: September 20, 1993Date of Patent: May 14, 1996Assignee: MacMillan Bloedel LimitedInventor: James A. De Witt
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Patent number: 5503713Abstract: A process for making a cellulosic pulp fiber web having increased wet strength comprising the steps of: (1) adding to an aqueous cellulosic pulp fiber slurry a water soluble cationic polymer consisting of polydimethyldiallylammonium chloride to form a first treated slurry; (2) adding to the first treated slurry an aminopolyamide-epichlorohydrin acid salt resin solution having an E/N ratio of from about 0.6 to about 2.0 so that the weight percent of the cationic polymer is from about 1% to about 35% based on the weight of the resin, thus forming a second treated slurry; and (3) forming a cellulosic pulp fiber web by dewatering the second treated slurry.Type: GrantFiled: July 1, 1994Date of Patent: April 2, 1996Assignee: Henkel CorporationInventors: David I. Devore, Nancy Clungeon, Stephen A. Fischer
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Patent number: 5501772Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and a modified lignin wherein the ratio of the cationic polymer to the modified lignin is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.Type: GrantFiled: June 7, 1996Date of Patent: March 26, 1996Assignee: Calgon CorporationInventors: David L. Elliott, Ronald J. Falcione, Wood E. Hunter
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Patent number: 5501773Abstract: A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.Type: GrantFiled: June 7, 1995Date of Patent: March 26, 1996Assignee: Calgon CorporationInventors: David L. Elliott, Ronald J. Falcione, Wood E. Hunter
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Patent number: 5348621Abstract: Composition board and various other synthetic or artificial panel and the like structures a well as manually-formable compositions of paste-like consistency for substitution as putty, caulking or molding clays, etc., all of which can be internally reinforced for better-strength structural purposes, are fabricated and made into desired strong and excellently-utile shaped article products of manufacture and the like under various forming conditions for the purpose from coarse paper starting material (viz, common "newsprint", kraft paper, cardboards, etc.) which starting material may optionally have "wet" sawdust and/or other undried cellulosic inclusions therein all of which, advantageously and economically, is converted by treatment thereof with certain non-azotizing, non-alklai, nascently-operative and -reacting strong oxidizing agents including such things as common household bleach (i.e.Type: GrantFiled: March 29, 1993Date of Patent: September 20, 1994Assignee: Coalition Technologies, LimitedInventor: Norbert J. Rudy, deceased
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Patent number: 5338404Abstract: Preformed cellulosic linerboard as utilized in the manufacture of corrugated products is provided with enhanced crush strength by a combined lignin-coating and calendering treatment. The linerboard is coated with an aqueous lignin-containing solution and then, with the coating in a wet or dry state, subjected to at least one pass through a calender nip to substantially increase the CD crush strength of the treated linerboard over the CD crush strength of an untreated linerboard or a lignin treated but uncalendered linerboard. The linerboard may be laminated with a substantially air and moisture impervious sheet to inhibit bleeding of the lignin coating in high humidity conditions.Type: GrantFiled: March 11, 1992Date of Patent: August 16, 1994Assignee: International Paper CompanyInventors: Paul C. Lucas, Ronald J. Messenger, Elizabeth Macklem-Nathan, Lawrence C. Nykwest
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Patent number: 5237594Abstract: A nuclear apparatus for obtaining qualitative and quantitative information related to an element of earth formation surrounding a borehole, comprising: (1) a neutron source for irradiating the formation with neutrons of sufficient energy to activate atoms of at least a given element; (2) at least two (preferably four) detectors longitudinally spaced from said source, for detecting the gamma rays emitted during the activation reaction; (3) means for assigning a maximum number of counts for each detector and for establishing a relationship between these maximum number of counts and the corresponding instant of time counts for each detector; and (4) means for deriving from the relationship qualitative information related to the element.The relationship is approximately a straight line, the slope of which is representative of the element of interest. The amplitude of the counts is representative of the quantity of the activated element and of the radial distance between the activated atoms and the borehole.Type: GrantFiled: April 29, 1991Date of Patent: August 17, 1993Assignee: Schlumberger Technology CorporationInventor: James F. Carroll
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Patent number: 5135612Abstract: A method for making a shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One of the methods to make the shaped product comprises exploding softwood bark to obtain exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, compressing that exploded bark into a shaped product, while removing in part water, and drying the shaped product to remove the remaining water.Type: GrantFiled: March 11, 1991Date of Patent: August 4, 1992Assignee: Domtar Inc.Inventors: Michel J. Desrochers, Michel Jean, Michel P. Drouin
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Patent number: 5110414Abstract: A procedure for manufacturing lignocellulosic material products and for improving their strength and water resistance characteristics, high-molar mass lignin derivatives being added to the lignocellulosic material, of which at least 35% by weight are over 5000 in molar mass.Type: GrantFiled: February 25, 1991Date of Patent: May 5, 1992Assignee: Oy Keskuslaboratorio - Centrallaboratorium ABInventors: Kaj G. Forss, Agneta G. M. Fuhrmann, Martti Toroi
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Patent number: 5100511Abstract: A method for the manufacture of products containing fibers of lignocellulosic material which involves the disintegration of a lignocellulosic material into fibers and forming and pressing of the fiber web into the product in question, which is preferably in the form of fiberboard (board products). The material that forms the fibers is impregnated with lignin in conjunction with water and at a pH which does not substantially exceed 12.5. When the lignin has been absorbed by the material it is fixed against leaching by water through the modification of said lignin into an essentially water-insoluble form.Type: GrantFiled: February 4, 1991Date of Patent: March 31, 1992Inventors: Rune Simonson, Brita Ohlsson, Birgit stman
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Patent number: 4964952Abstract: A method of controlling pitch in an aqueous system involved in paper making as described which comprises adding a cationically modified tannin to the system.Type: GrantFiled: April 28, 1988Date of Patent: October 23, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: John J. Bennison, Richard P. Clifford
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Patent number: 4929498Abstract: Discolsed are wet wiper products that incorporate antimicrobially-active nonwoven fabrics, preferably comprising: bonded fibers; a binder distributed on said fibers; and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is prevented from substantially diffusing from said fabric.Type: GrantFiled: January 31, 1989Date of Patent: May 29, 1990Assignee: James River Corporation of VirginiaInventors: Stuart P. Suskind, Joseph H. Miller
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Patent number: 4772359Abstract: Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.Type: GrantFiled: May 29, 1987Date of Patent: September 20, 1988Assignee: BASF AktiengesellschaftInventors: Friedrich Linhart, Hans-Juergen Degen, Werner Auhorn, Michael Kroener, Heinrich Hartmann, Wilfried Heide
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Patent number: 4560619Abstract: A wood improver comprising a waste liquor produced by the digestion of pulp, such as kraft, sulfite or semichemical pulp, and optionally further containing a Steffen waste liquor from beet sugar plant and/or polyethylene glycol. Also disclosed is a method of improving the quality of wood by treating it with the improver to prevent its cracking during drying.Type: GrantFiled: September 15, 1983Date of Patent: December 24, 1985Assignee: Nippon Tensaiseito Kabushiki KaishaInventor: Yasutsugu Yamada
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Patent number: 4394213Abstract: A composition comprising salts of lignin sulfonate and hydroxy-aluminum and water. The composition stabilizes soil formations from the effects of water and increases the water resistance of paper products.Type: GrantFiled: July 1, 1981Date of Patent: July 19, 1983Assignee: Chevron Research CompanyInventor: Richard L. Ferm
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Patent number: 4313790Abstract: A process is disclosed for the production of paper and paper-like products which consists of the addition to the papermaking furnish of kraft lignin or modified kraft lignin and poly(oxyethylene).Type: GrantFiled: March 31, 1980Date of Patent: February 2, 1982Assignee: Pulp and Paper Research Institute of CanadaInventors: Robert H. Pelton, Lawrence H. Allen, Henry M. Nugent
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Patent number: 4259147Abstract: A versatile process and apparatus is presented for producing, in high yields, many different grades of pulp from a single wood specie or for pulping any specie or type of woody material, and for storage and recycling of the by-product liquid and gaseous materials. The process of this invention is virtually pollution free, and the reactant chemicals are recoverable from the by-products. In the alternative, the by-products themselves have a commercial value which may forestall recovery of the reactants. The lignin constituent extracted from the pulp is usable as a resin binder, a wood rehardening agent, or a glue.Type: GrantFiled: October 11, 1979Date of Patent: March 31, 1981Assignee: New Fibers InternationalInventor: John Gordy
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Patent number: 4191610Abstract: Fibrous materials are disclosed having incorporated therein upgraded waste sulphite liquor; the liquor is neutralized, e. g., with sodium borate, sodium aluminate, reacidified, if needed, with alum; the modified sulphite waste liquor of hardwoods as well as articles of manufacture of fibrous materials such as corrugated medium made of waste materials are diclosed; further, articles of manufacture thus modified include starch or sizing and are within the scope of the invention.Type: GrantFiled: September 1, 1978Date of Patent: March 4, 1980Inventor: Eric S. Prior
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Patent number: 4167439Abstract: A non-ionic copolymer composed of (in weight percent) 5 to 30% N-vinyl pyrrolidone, 15 to 60% acrylamide, and 30 to 70% methyl methacrylate is disclosed. The copolymer is added in minor amount to paper pulp, especially pulp containing black liquor contamination, to improve the paper making operation and the dry strength of the paper.Type: GrantFiled: September 12, 1977Date of Patent: September 11, 1979Assignee: Rohm and Haas CompanyInventor: H. Scott Killam