Coloring Agent Patents (Class 162/162)
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Patent number: 11760720Abstract: An aqueous composition comprising: sulfuric acid; a compound comprising an amine moiety; a compound comprising a sulfonic acid moiety; and a peroxide. Said composition being capable of delignifying biomass.Type: GrantFiled: February 26, 2021Date of Patent: September 19, 2023Inventors: Clay Purdy, Markus Weissenberger, Kyle G. Wynnyk, Karl W. Dawson
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Patent number: 11525015Abstract: Provided is an oxidized microfibrillated cellulose fiber having a Canada standard freeness of less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber provides a composition having excellent water retention ability.Type: GrantFiled: March 28, 2019Date of Patent: December 13, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masato Takayama, Yoshihiro Aoki, Takanori Otsuhata, Takeo Izumiya, Hiroyuki Okumura, Tomonori Kawamata, Ryo Sotooka
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Patent number: 11447915Abstract: It is an object of the present invention to optimize a bleaching process in a step of producing phosphorylated cellulose fibers. The present invention relates to a pulp comprising cellulose fibers having 0.5 mmol/g or more of phosphoric acid groups or phosphoric acid group-derived substituents, wherein when the pulp is processed into a sheet and four sheets are laminated on one another, the ISO whiteness of the laminate is 82% or more. Moreover, when the pulp of the present invention is processed into a sheet and four sheets are then laminated on one another, the b* value of the obtained laminate according to the L*a*b* color system is 5.5 or less.Type: GrantFiled: September 29, 2017Date of Patent: September 20, 2022Assignee: OJI HOLDINGS CORPORATIONInventors: Mengchen Zhao, Yuichi Noguchi, Ikue Homma, Yusuke Todoroki
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Patent number: 11000968Abstract: There is provided a sheet manufacturing apparatus that is capable of manufacturing a sheet having a predetermined color, the apparatus including: a plurality of resin cartridges that store a plurality of colored resins, respectively; a resin supply unit that supplies a resin from one or the plurality of resin cartridges to a predetermined raw material in a predetermined step of manufacturing a sheet; and a controller that selects a resin cartridge, which is a supply source of a resin, when the resin supply unit supplies the resin, and performs setting related to a supply amount of a resin for each of the selected resin cartridges, based on setting related to a color of a sheet to be manufactured.Type: GrantFiled: August 2, 2017Date of Patent: May 11, 2021Assignee: Seiko Epson CorporationInventors: Takao Mikoshiba, Yoshinobu Monbetsu, Yasumasa Nakajima, Seiichi Taniguchi, Takeshi Kimoto
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Patent number: 10988716Abstract: Provided herein are polysaccharide derivatives substituted (a) at a degree of substitution (DS1) of at least 0.05 by a fluorescent group (FG) having a mono or polycyclic ring system including at least one heteroatom selected from N, O and S and conjugated double bonds, and having an absorption band in the UV region of light and an emission band in the visible region of light, and bonded via a first linker to any one of the native functional groups of the polysaccharide repeating units; and (b) at a degree of substitution (DS2) of at least 0.05 by a charged group (CG) bonded via a second linker to any one of the native functional groups of the polysaccharide repeating units.Type: GrantFiled: March 21, 2017Date of Patent: April 27, 2021Assignee: ABO AKADEMI UNIVERSITYInventors: Pedro Fardim, Thomas Heinze, Holger Wondraczek, Olga Gabova
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Patent number: 10689808Abstract: The present invention refers to the use and creation of materials based on natural cellulose fibbers, synthetic fibbers, or mixed fibbers as physical support and storing medium or storage inducer of electrical and ionic charges in self-sustaining discrete or complementary field-effect transistors with non-volatile memory by using organic or inorganic active semiconductors for the manufacture of the channel regions that are deposited on the fibbers of the paper material as well as metals or passive semiconductors for manufacturing drain and source allowing the interconnection of fibbers, in addition to the gate electrode contact existing on the other side-face of the paper, p or n type respectively, in monolithic or hybrid forms.Type: GrantFiled: March 20, 2009Date of Patent: June 23, 2020Assignee: FACULDADE DE CIÊNCIAS E TECNOLOGIA DA UNIVERSIDADE NOVA DE LISBOAInventors: Rodrigo Ferrão De Paiva Martins, Elvira Maria Correia Fortunato, Luís Miguel Nunes Pereira, Pedro Miguel Cândido Barquinha, Nuno Filipe De Oliveira Correia
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Patent number: 9752284Abstract: The invention relates to a method for treating a fiber stock for making of paper, board or the like. The method comprises obtaining a fiber thick stock and adding to the fiber thick stock at least one cationic first agent, and adding separately to the fiber stock and after the addition of the cationic first agent, at least one anionic second agent, which is an water-soluble anionic copolymer of acrylamide, methacrylamide or acrylonitrile, in such amount that the ratio of the added absolute cationic charge to the added absolute anionic charge is from 1:0.1 to 1:0.95. The invention relates also to the product prepared by using a fiber stock, which is treated by using the method.Type: GrantFiled: November 12, 2013Date of Patent: September 5, 2017Assignee: KEMIRA OYJInventors: Matti Hietaniemi, Mikko Virtanen, Emmi Saranpää
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Publication number: 20150047799Abstract: Methods of producing cellulosic or lignocellulosic materials for use in papermaking include treating a cellulosic or lignocellulosic dry feedstock having a first average molecular weight with ionizing radiation, and controlling the dose of ionizing radiation such that the average molecular weight of the feedstock is reduced to a predetermined level. A method of producing an irradiated paper product includes treating a paper product including a first carbohydrate-containing material having a first molecular weight with ionizing radiation, and controlling the dose of ionizing radiation so as to provide an irradiated paper product with a second carbohydrate-containing material having a second molecular weight higher than the first molecular weight. Pulp and paper products are produced.Type: ApplicationFiled: September 2, 2014Publication date: February 19, 2015Inventor: Marshall Medoff
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Publication number: 20150020987Abstract: A process is provided for making a fluff pulp sheet, comprising: contacting at least one cationic dye and at least one debonder surfactant with a composition comprising fluff pulp fibers, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to obtain the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic dye; and at least one debonder surfactant. Products and uses of the fluff pulp sheet are also provided.Type: ApplicationFiled: October 3, 2014Publication date: January 22, 2015Inventor: JAMES E. SEALEY
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Patent number: 8926796Abstract: The present invention provides formulations for papermaking and methods for their use. In embodiments, the formulations include a treatment agent and a fluid carrier, where the treatment agent includes a volatile debonder or a polymer composition exhibiting a lower critical solution temperature. Methods for treating a paper product to increase its bulk or its stiffness are also disclosed, in addition to paper products formed from such methods.Type: GrantFiled: November 8, 2012Date of Patent: January 6, 2015Assignee: Nanopaper, LLCInventors: Gangadhar Jogikalmath, David S. Soane, Andrea Schneider
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Patent number: 8921564Abstract: The invention relates to basic bisazo compounds according to formula (I) wherein all substituents are defined as in Claim 1, their production, their use as dyestuffs as well as material dyed with these dyestuffs.Type: GrantFiled: July 25, 2007Date of Patent: December 30, 2014Assignee: Clariant Finance (BVI) Ltd.Inventors: Ludwig Hasemann, Friedrich Lehr, Martin Oberholzer, Heidrun Schene
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Publication number: 20140374041Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: September 5, 2014Publication date: December 25, 2014Inventor: Tariq Mahmood Malik
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Publication number: 20140352903Abstract: A cellulosic composition comprising fibres having a length weighted average fibre length (“LWAFL”) of 0.25 to 0.40 mm.Type: ApplicationFiled: October 26, 2011Publication date: December 4, 2014Applicant: ZEO IP PTY LTDInventor: Martin Charles Ernegg
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Patent number: 8894815Abstract: The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4?-diaminostilbene-2,2?-disulphonic acid and of organic acids which do not need extra solubilizing additives.Type: GrantFiled: December 9, 2008Date of Patent: November 25, 2014Assignee: Clariant Finance (BVI) LimitedInventors: John Martin Farrar, Andrew Clive Jackson, Margaret Mahon, Martin Oberholzer
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Patent number: 8871054Abstract: A process is provided for making a fluff pulp sheet, comprising: contacting at least one cationic dye and at least one debonder surfactant with a composition comprising fluff pulp fibers, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to obtain the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic dye; and at least one debonder surfactant. Products and uses of the fluff pulp sheet are also provided.Type: GrantFiled: July 21, 2011Date of Patent: October 28, 2014Assignee: International Paper CompanyInventor: James E. Sealey
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Patent number: 8852396Abstract: The present invention relates to a sheet material (2) comprising at least one first layer defining an outer surface of the sheet material and having at least one first color, at least one second layer comprising at least one watermark (6) and having at least one second color, the first and second colors having at least different saturations and/or hue angles.Type: GrantFiled: April 24, 2012Date of Patent: October 7, 2014Assignees: Arjowiggins Security, ArjowigginsInventors: Henri Rosset, Ivan Thierry
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Patent number: 8845861Abstract: A sizing composition for paper, characterised in that the sizing composition comprises (a) at least one optical brightener of formula (1), (b) a magnesium salt; and (c) a binding agent, which is selected from the group consisting of native starch, enzymatically modified starch and chemically modified starch; 0.1 to 15 parts of component (b) being present per part of component (a).Type: GrantFiled: March 12, 2009Date of Patent: September 30, 2014Assignee: Clariant Finance (BVI) LimitedInventors: Andrew Clive Jackson, David Puddiphatt, Cédric Klein
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Patent number: 8821688Abstract: The instant invention relates to mixed salts of optical brighteners of formula (1), wherein M represents a mixture of Mg2+ with another cation, which provide for superior optical brightening effects when applied to the surface of paper.Type: GrantFiled: March 12, 2009Date of Patent: September 2, 2014Assignee: Clariant Finance (BVI) LimitedInventors: Andrew Clive Jackson, David Puddiphatt, Cédric Klein
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Publication number: 20140205664Abstract: The present invention relates to an improved process for the production of finely divided haematite and of iron oxide red pigments made up of the finely divided haematite and the use of the finely divided haematites and iron oxide red pigments produced by this process.Type: ApplicationFiled: September 28, 2012Publication date: July 24, 2014Applicant: LANXESS DEUTSCHLAND GmbHInventors: Guido Ketteler, Udo Holtmann, Juergen Kischkewitz
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Patent number: 8784612Abstract: The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4?-diaminostilbene-2,2?-disulphonic acid and of organic acids which do not need extra solubilizing additives.Type: GrantFiled: December 9, 2008Date of Patent: July 22, 2014Assignee: Clariant Finance (BVI) LimitedInventors: John Martin Farrar, Andrew Clive Jackson, Margaret Mahon, Martin Oberholzer
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Publication number: 20140165879Abstract: The present invention relates to a process for preparing self-binding pigment particles from an aqueous mineral pigment material suspension having a solid content of 45 to 80 wt.-%, based on the total weight of the suspension.Type: ApplicationFiled: March 22, 2012Publication date: June 19, 2014Inventors: Patrick A.C. Gane, Matthias Buri, Samuel Rentsch, Julie Bridy (Meuwly)
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Patent number: 8668747Abstract: The present invention relates to storage stable aqueous dye dispersions, comprising (a) 2.0 to 30.0% by weight, based on the sum of (a), (b) and (c), of a dye of the formula (3) in which KK is a residue of a coupling component; (b) 0.1 to 20.0 % by weight, based on the sum of (a), (b) and (c), of at least one additive selected from the group consisting of wetting agents, dispersing agents, rheology modifiers, and preservatives; and (c) 50.0 to 97.9% by weight, based on the sum of (a), (b) and (c), of water. The invention moreover relates to a process for their preparation and the use thereof for the dyeing, in particular of paper.Type: GrantFiled: January 29, 2010Date of Patent: March 11, 2014Assignee: BASF SEInventors: Holger Lautenbach, Rainer Hans Traber, Heidemarie Urbing
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Publication number: 20140000827Abstract: A process is provided for making a fluff pulp sheet, comprising forming a web comprising fluff pulp fibers; and applying at least one debonder surfactant to 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 debonder surfactant; and a fiberization energy of <145 kJ/kg. Products and uses of the fluff pulp sheet are also provided.Type: ApplicationFiled: August 26, 2013Publication date: January 2, 2014Applicant: INTERNATIONAL PAPER COMPANYInventors: JIANER JIANG, JAMES E. SEALEY
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Patent number: 8613836Abstract: 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: GrantFiled: August 5, 2010Date of Patent: December 24, 2013Assignee: International Paper CompanyInventors: James E. Sealey, Michael Hevenor
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Patent number: 8613834Abstract: 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: GrantFiled: April 3, 2008Date of Patent: December 24, 2013Assignee: BASF SEInventors: Peter C. Hayes, Ralph Lewis De Jong
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Patent number: 8608907Abstract: A composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.Type: GrantFiled: June 10, 2009Date of Patent: December 17, 2013Assignee: Blankophor GmbH & Co. KGInventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Günter Klug
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Publication number: 20130284388Abstract: A process for making a stiffened and rigid paper includes preparing a pulp slurry consisting essentially of water, a cellulosic pulp, a crosslinker, and a starch, and optionally a binder; draining the liquid from the pulp slurry to form a web; and drying the web. Alternatively, a process for making a stiffened and rigid paper includes the step of adding at least one crosslinker at one or more locations, such as at the wet-end, dry-end, or at both ends of the papermaking process. Suitable crosslinkers include a glyoxal-containing crosslinker, a gluteraldehyde, a polyfunctional aziridine, a zirconium-containing crosslinker, a titanium-containing crosslinker, and an epichlorohydrin, and mixtures thereof. When a binder is employed, it can be added either in the dry or wet form. Provided is a neutral or alkaline process to produce a paper product having the improved mechanical properties of a laminated product in the Z-direction, without a lamination step.Type: ApplicationFiled: June 20, 2013Publication date: October 31, 2013Inventor: Thomas W. Ballinger
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Patent number: 8506653Abstract: The present invention relates to an aqueous direct dye formulation, comprising (a) 5 to 25% by weight of a dye composition comprising (a1) 50-99% by weight of one or more dyes obtainable by reduction or thermal treatment of Direct Yellow 11, and (a2) 1-50% by weight of a blue, black and/or red direct dye, (all based on the dye composition); (b) up to 0.9% by weight of a saturated, cyclic or acyclic water-soluble amine comprising a primary, secondary or tertiary amino group and at least one further functional group selected from primary, secondary and tertiary amino groups, OH groups and ether groups; and (c) up to 0.9% by weight of urea; and (d) water, wherein the percentages for (a), (b), and (c) relate to the total weight of the aqueous direct dye formulation. The invention moreover relates to a process for their preparation and the use thereof for the dyeing, in particular of paper, as well as paper which has been dyed with this aqueous direct dye formulation.Type: GrantFiled: March 11, 2010Date of Patent: August 13, 2013Assignee: BASF SEInventors: Allan Francis Cunningham, Céline Hossenlopp, Heinz Schneider, Rainer Hans Traber, Horst Herrmann, Michael Jacquier
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Publication number: 20130202877Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: W. R. MEADOWS, INC.Inventor: W.R. Meadows, Inc.
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Publication number: 20130202876Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: March 15, 2013Publication date: August 8, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. MEADOWS, INC.
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Publication number: 20130199745Abstract: The present invention relates to a fibre product that contains pulp fibre or wood fibre, wherein filler particles are attached between the fibres and to the fibrils, part of the particles consisting of chemically structured kaolin agglomerates or granules, and a part consisting of carbonate that is formed from a corresponding oxide or hydroxide by means of carbon dioxide. The invention also relates to a manufacturing method of such a fibre product.Type: ApplicationFiled: November 4, 2011Publication date: August 8, 2013Applicant: NORDKALK OY ABInventors: Pentti Virtanen, Sakari Saastamoinen
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Patent number: 8475630Abstract: 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: GrantFiled: April 16, 2010Date of Patent: July 2, 2013Assignee: NanoPaper, LLCInventors: Lynn Reis, Gangadhar Jogikalmath, David S. Soane
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Publication number: 20130164526Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: February 21, 2013Publication date: June 27, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. Meadows, Inc.
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Publication number: 20130160958Abstract: The present invention provides formulations for papermaking and methods for their use. In embodiments, the formulations include a treatment agent and a fluid carrier, where the treatment agent includes a volatile debonder or a polymer composition exhibiting a lower critical solution temperature. Methods for treating a paper product to increase its bulk or its stiffness are also disclosed, in addition to paper products formed from such methods.Type: ApplicationFiled: November 8, 2012Publication date: June 27, 2013Applicant: NANOPAPER, LLCInventor: NANOPAPER, LLC
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Publication number: 20130153165Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: February 21, 2013Publication date: June 20, 2013Applicant: W. R. MEADOWS, INC.Inventor: W. R. Meadows, Inc.
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Patent number: 8460511Abstract: The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, and print mottle, as well as print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substrate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.Type: GrantFiled: October 1, 2009Date of Patent: June 11, 2013Assignee: International Paper CompanyInventors: Yan C. Huang, Kapil M. Singh, David B. Shelmidine, Benjamin Thomas Liguzinski, Christopher Michael Wilson
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Publication number: 20130133846Abstract: A process for manufacturing fiberboard by preparing a fiber slurry mixture including containing cellulose fibers and water then atomizing a liquid bituminous material, such as asphalt. The liquid bituminous material is atomized by mixing it with a pressurized gas, such as compressed air, forming a mist comprising droplets of bituminous material having a diameter between 20 microns and 50 microns. A water spray solidifies the bituminous material droplets thereby forming bituminous particles which fall into the fiber slurry within the spray chamber. From there the slurry is sheared, dewatered, and dried, forming a finished fiberboard.Type: ApplicationFiled: January 23, 2013Publication date: May 30, 2013Applicant: W. R. MeadowsInventor: W. R. Meadows
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Publication number: 20130118698Abstract: Object of the invention is the method for preparing white paper which comprises adding to the pulp mass an aqueous formulation comprising a) at least one optical brightener of formula (I) in which the anionic charge on the brightener is balanced by a cationic charge composed of one or more identical or different cations selected from the group consisting of hydrogen, an alkali metal cation, alkaline earth metal, ammonium, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched alkyl radical, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched hydroxyalkyl radical, ammonium which is, di-, tri- or tetrasubstituted by a mixture of C1-C4 linear or branched alkylradical and linear or branched hydroxyalkyl radical or mixtures of said compounds, wherein R1 and R1? may be the same or different, and each is hydrogen, C1-C4 linear or branched alkyl, C2-C4 linear or branched hydroxyalkyl, CH2CO2?, CH2CH2CONH2 or CH2CH2CN, R2 and R2? may be the same oType: ApplicationFiled: July 22, 2011Publication date: May 16, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Heidrun Grether-Schene, Cedric Klein, Frederic Reveaud, David Atkinson, Andrew Clive Jackson
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Publication number: 20130105099Abstract: The present invention relates to an aqueous preparation comprising a fluorescent dyestuff of a specific formula, water, and optionally a dispersing agent, and the use of the aqueous preparation for dyeing cellulose- or polyamide-containing materials.Type: ApplicationFiled: June 15, 2011Publication date: May 2, 2013Inventor: Helmut-Martin Meier
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Publication number: 20130087298Abstract: A sensor wipe, made in part by a hydroentangling or conforming process, includes fibers onto which an indicator dye is immobilized. The substrate may be used to make sensor wipes for testing surface conditions, including but not limited to pH or the presence of certain microbes. The indicator dye does not leach from the sensor wipe. The indicator dye may be reversible so that the sensor wipe can be reused prior to disposal.Type: ApplicationFiled: October 5, 2011Publication date: April 11, 2013Inventors: Ronnie Lee Phillips, Kelly Dean Branham, Stephanie Michelle Martin, John Gavin MacDonald, David William Koenig
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Patent number: 8382947Abstract: The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface of a sized paperboard substrate to form a treated paperboard substrate. The treated paperboard substrate includes a layer of OBA on at least one surface of the paper or paperboard substrate in which the brightness of the treated paper or paperboard substrate is greater than the sized paper or paperboard substrate before treating thereof.Type: GrantFiled: June 17, 2011Date of Patent: February 26, 2013Assignee: International Paper CompanyInventors: Benny J Skaggs, Matt Bovee
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Publication number: 20120308667Abstract: The present invention relates to effect pigments based on uncoated or coated flake-form substrates having an outer coating comprising a) TiO2 and b) Al2O3, MgO and/or CaO and c) SiO2 and d) ZnO and/or e) at least one mixed oxide of the elements mentioned under a) to d), and to the use thereof, inter alia in paints, coatings, printing inks, plastics and cosmetic formulations.Type: ApplicationFiled: February 2, 2011Publication date: December 6, 2012Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Sabine Melson, Volker Wilhelm, Ulrich Schoenefeld
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Patent number: 8262858Abstract: Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintains and/or enhances brightness, prevents yellowing, and enhances the performance of paper products. Used in combination with optical brighteners and/or chelants the oxidative agents produce a synergistic effect not previously identified in the paper process.Type: GrantFiled: March 29, 2011Date of Patent: September 11, 2012Assignee: Nalco CompanyInventors: Prasad Y. Duggirala, Sergey M. Shevchenko, Katherine M. Broadus
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Patent number: 8221588Abstract: The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4?-diaminostilbene-2,2?-disulphonic acid which do not need extra solubilising additives.Type: GrantFiled: July 12, 2006Date of Patent: July 17, 2012Assignee: Clariant Finance (BVI) LimitedInventors: John Martin Farrar, Andrew Clive Jackson, Margaret Mahon
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Patent number: 8221586Abstract: The invention relates to improvements in security substrates and in particular to fibrous security substrates, such as paper, incorporating a watermark. The security substrate comprises a fibrous base layer, having a normal base fiber density, said base layer incorporating a watermark consisting of a plurality of alphanumeric characters. Each character comprises dark and/or light regions, the dark regions being formed by more densely deposited fibers than the normal base fiber density and the light regions being formed by less densely deposited fibers than the normal base fiber density. The density of the fibers in any region is substantially uniform such that there is no gradual change of tone between the light and dark regions. Each dark and light region adjoins at least one light and dark region respectively and an area of normal fiber density.Type: GrantFiled: May 3, 2007Date of Patent: July 17, 2012Assignee: De La Rue International LimitedInventor: John Martin Haslop
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Patent number: 8182651Abstract: The present invention relates to a sheet material comprising at least one first layer defining an outer surface of the sheet material and having at least one first color, at least one second layer comprising at least one watermark and having at least one second color, the first and second colors having at least different saturations and/or hue angles.Type: GrantFiled: February 9, 2007Date of Patent: May 22, 2012Assignees: Arjowiggins, Arjowiggins SecurityInventors: Henri Rosset, Ivan Thierry
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Publication number: 20120118522Abstract: The instant invention relates to liquid sizing compositions comprising shading dyestuffs, derivatives of diaminostibene, binders, protective polymers, and optionally divalent metal salts which can be used for the optical brightening of substrates, including substrates suitable for high quality ink jet printing.Type: ApplicationFiled: July 23, 2010Publication date: May 17, 2012Applicant: CLARIANT FINANCE (BVI) LIMITEDInventor: Heidrun Grether-Schene
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Patent number: 8172982Abstract: Conductive nonwoven webs are disclosed. The nonwoven webs contain pulp fibers combined with conductive fibers. In one embodiment, the webs are made in a wetlaid tissue or paper making process. The pulp fibers contained in the webs may comprise softwood fibers, while the conductive fibers may comprise carbon fibers. Base webs can be produced having a resistance of less than about 100 Ohms/square in one embodiment. Once produced, the conductive material can be cut into slits that are then wound on spools. From the spools, the conductive slits can be fed into a process for making any suitable product.Type: GrantFiled: December 22, 2008Date of Patent: May 8, 2012Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Thomas Michael Ales, Davis-Dang H. Nhan, Duane Joseph Shukoski, Michael John Rekoske
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Patent number: 8157961Abstract: The present invention relates to a sizing composition that, when applied to paper substrate, creates a substrate, preferably suitable for inkjet printing, having increased print density, print sharpness, low HST, and/or image dry time, the substrate preferably having high brightness and reduced color-to-color bleed as well. In addition, the present invention relates to a method of reducing the HST of a paper substrate by applying the sizing composition to at least one surface thereof. Further, the application relates to methods of making and using the sizing composition, as well as methods of making and using the paper containing the sizing composition.Type: GrantFiled: March 22, 2010Date of Patent: April 17, 2012Assignee: International Paper CompanyInventors: Jay C. Song, Sen Yang, Yan C. Huang, Kapil M. Singh, Michael F. Koenig, David B. Shelmidine
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Publication number: 20120005845Abstract: The present invention relates to an aqueous direct dye formulation, comprising (a) 5 to 25% by weight of a dye composition comprising (a1) 50-99% by weight of one or more dyes obtainable by reduction or thermal treatment of Direct Yellow 11, and (a2) 1-50% by weight of a blue, black and/or red direct dye, (all based on the dye composition); (b) up to 0.9% by weight of a saturated, cyclic or acyclic water-soluble amine comprising a primary, secondary or tertiary amino group and at least one further functional group selected from primary, secondary and tertiary amino groups, OH groups and ether groups; and (c) up to 0.9% by weight of urea; and (d) water, wherein the percentages for (a), (b), and (c) relate to the total weight of the aqueous direct dye formulation. The invention moreover relates to a process for their preparation and the use thereof for the dyeing, in particular of paper, as well as paper which has been dyed with this aqueous direct dye formulation.Type: ApplicationFiled: March 11, 2010Publication date: January 12, 2012Applicant: BASF SEInventors: Allan Francis Cunningham, Céline Hossenlopp, Heinz Schneider, Rainer Hans Traber, Horst Herrmann, Michael Jacquier