The Nitrogen Is Part Of A Hetero Ring Patents (Class 106/200.2)
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Patent number: 10982010Abstract: The present invention relates to a process for extracting oxidised metal pollutants from treated cellulosic or lignocellulosic biomass to recover the metal. The treatment also generates a cellulosic or lignocellulosic biomass which can to be used as a feedstock for biofuel, for making cellulose containing materials, and provides a source of other renewable chemicals.Type: GrantFiled: November 21, 2016Date of Patent: April 20, 2021Assignee: IP2IPO Innovations LimitedInventors: Jason Hallett, Paul Fennell, Florence Gschwend, Agnieszka Brandt-Talbot, Geoffrey Kelsall
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Patent number: 10822743Abstract: A process for producing a nanofibrillar cellulose hydrogel comprises obtaining bleached cellulose pulp fibers and providing an aqueous suspension thereof; and subjecting the cellulose pulp fibers in the aqueous suspension to at least 2 cycles of high pressure mechanical disintegration to obtain a nanofibrillar cellulose hydrogel and thereby reducing the number of viable microorganisms present in the suspension by a factor of at least 102; wherein all steps of the process after obtaining the bleached cellulose pulp fibers are performed under conditions of ISO 8 of ISO 14644-1 cleanroom standards or stricter. A nanofibrillar cellulose hydrogel, a system for producing the same and the use of a disintegrating apparatus are also disclosed.Type: GrantFiled: June 2, 2016Date of Patent: November 3, 2020Assignee: UPM-KYMMENE CORPORATIONInventors: Isko Kajanto, Markus Nuopponen
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Publication number: 20150148458Abstract: The present invention provides a production method for purified polysaccharide fibers in which carbon disulfide emission is suppressed while efficiently producing purified polysaccharide fibers having excellent strength, purified polysaccharide fibers produced by using the production method, a fiber-rubber complex using the purified polysaccharide fibers, and a tire having excellent tire characteristics using the fiber-rubber complex. The production method for purified polysaccharide fibers of the present invention is a production method for purified polysaccharide fibers of wet-spinning or dry-wet-spinning polysaccharide by bringing a polysaccharide solution obtained by dissolving a polysaccharide raw material in a liquid including an ionic liquid into contact with a solidification liquid including an ionic liquid, in which a concentration of the ionic liquid in the solidification liquid is 0.Type: ApplicationFiled: May 21, 2013Publication date: May 28, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Mitsuharu Koide, Kenichi Sugimoto
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Publication number: 20130192489Abstract: The present invention provides a process for producing a cellulose film in which a) cellulose is at least partly dissolved at a temperature of about 100° C. or lower in a dope comprising an ionic liquid and a cosolvent to form a cellulose solution, wherein said cosolvent comprises a polar aprotic component, and B) cellulose film is cast from the cellulose solution.Type: ApplicationFiled: June 21, 2011Publication date: August 1, 2013Applicant: INNOVIA FILMS LIMITEDInventors: Martin Cockcroft, Colin Marshall
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Publication number: 20130194723Abstract: A dielectric material is provided. The dielectric material includes at least one layer of a substantially continuous phase material. The material is selected from the group consisting of an organic, organometallic, or combination thereof in which the substantially continuous phase material has delocalized electrons.Type: ApplicationFiled: January 22, 2013Publication date: August 1, 2013Applicant: CLEANVOLT ENERGY, INC.Inventor: CLEANVOLT ENERGY, INC.
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Patent number: 7754002Abstract: The present invention relates to a solution comprising cellulose, an ionic liquid comprising anions and cations as solvent and 6-30% by weight of a nitrogen-comprising base, based on the total weight of the solution, its preparation and also its use for the physical or chemical treatment of cellulose.Type: GrantFiled: April 12, 2006Date of Patent: July 13, 2010Assignee: BASF AktiengesellschaftInventors: Matthias Maase, Veit Stegmann
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Patent number: 7749318Abstract: The present invention relates to a solution comprising cellulose and an ionic liquid comprising anions and cations as solvent, wherein the cations comprise at least one atom selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus which is present in protonated form, its preparation and use for physical and chemical treatment.Type: GrantFiled: April 7, 2006Date of Patent: July 6, 2010Assignee: BASF AktiengesellschaftInventors: Matthias Maase, Veit Stegmann
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Patent number: 7459015Abstract: An improved process for the preparation of a cellulose solution for spinning of fibers, filaments or films therefrom comprising the steps of: a) activating cellulose in a mixture containing said cellulose, tertiary amine oxide solvent and, water for a period sufficient to allow a swelling of the cellulose by introduction therein of water present in said mixtures, the temperature of said activation step and concentration of solvent being such that the solvent is not converted into its monohydrate state during the step of activation; b) the cellulose, using a activator such as a glycol or a glyme, mixture being subjected to the steps of dissolution of cellulose in the solvent by heating for removal of water so as to convert the solvent into at least its monohydrate form so as to cause a dissolution.Type: GrantFiled: April 16, 2004Date of Patent: December 2, 2008Assignee: Birla Research Institute for Applied SciencesInventors: Koutu Brij Bhushan, Salgiya Suresh Chand
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Publication number: 20080190321Abstract: The present invention relates to a solution comprising cellulose and an ionic liquid comprising anions and cations as solvent, wherein the cations comprise at least one atom selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus which is present in protonated form, its preparation and use for physical and chemical treatment.Type: ApplicationFiled: April 7, 2006Publication date: August 14, 2008Applicant: Basf AktiengesellschaftInventors: Matthias Maase, Veit Stegmann
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Patent number: 7097344Abstract: The present invention relates to a method for making highly homogenized cellulose solution, wherein the cellulose solution is obtained by obtaining a solidified N-methylmorphorine-N-oxide (hereinafter, referred to as ‘NMMO’) hydrates which is solidified a liquid-state NMMO hydrates comprising 10 to 18% by weight water by using a simple screw-type feeder and by controlling the temperature, feeding the solidified NMMO into a twin-screw type extruder continuously, obtaining a cellulose solution which is fully swelled in a few minutes by dispersing and mixing with cellulose powder in the twin-screw type extruder, and extruding a highly homogenized cellulose solution by feeding the obtained cellulose solution into a melting zone of the extruder to melting the cellulose solution in a few minutes by minimum heat and shear force.Type: GrantFiled: October 24, 2003Date of Patent: August 29, 2006Assignee: Hyosung CorporationInventors: Ik-Hyeon Kwon, Soo-Myung Choi, Young-Soo Wang, Sung-Ryong Kim, Jae-Shik Choi, Tae-Jung Lee, Seok-Jong Han, Myung-Woo Kim
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Patent number: 6893492Abstract: This invention relates to a process of forming a nanocomposite of cellulose with a clay material that is used as the nanofiller material. The nanocomposites show significant improvements in thermal properties when compared to unbleached cotton and cotton processed under conditions for nanocomposite preparation. The degradation temperature of these nanocomposites is significantly increased over that of unbleached cotton.Type: GrantFiled: September 8, 2003Date of Patent: May 17, 2005Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Leslie A. White, Christopher D. Delhom
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Patent number: 6827773Abstract: Cellulose solvents, cellulose compositions, and methods of making and using the same. For example, a cellulose composition including cellulose dissolved in the following solvent: an amine-based composition, provided however, the amine-based composition is not ammonia; and a salt selected from the group including a thiocyanate salt, a halide salt, and a nitrate salt. Representative amine-based compositions include hydrazine, hydrazine hydrate, and ethylenediamine.Type: GrantFiled: October 30, 2002Date of Patent: December 7, 2004Assignee: North Carolina State UniversityInventors: John A. Cuculo, Kazuyuki Hattori
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Patent number: 6824599Abstract: Cellulose is dissolved in an ionic liquid without derivatization, and is regenerated in a range of structural forms without requiring the use of harmful or volatile organic solvents. Cellulose solubility and the solution properties can be controlled by the selection of the ionic liquid constituents, with small cations and halide or pseudohalide anions favoring solution.Type: GrantFiled: September 27, 2002Date of Patent: November 30, 2004Assignee: The University of AlabamaInventors: Richard Patrick Swatloski, Robin Don Rogers, John David Holbrey
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Patent number: 6812270Abstract: Disclosed is a process of producing a highly homogeneous cellulose solution, in which a mixture of powdered cellulose with polyvinyl alcohol powder is fed in conjunction with concentrated liquid NMMO into a kneader or an extruder to produce the highly homogeneous cellulose solution, or into the kneader to produce a swollen cellulose/polyvinyl alcohol paste and the paste thus produced is moved into the extruder to produce the highly homogeneous cellulose solution. The cellulose solution is extruded through a nozzle into a cellulose fiber. The process is advantageous in that the highly homogeneous cellulose solution can be rapidly and inexpensively produced because the cellulose solution is produced without a vacuum distillation step or separate swelling step, and formation of fibrils is prevented, thereby cellulose fibers with excellent flexibility and strength are produced from the cellulose solution.Type: GrantFiled: August 9, 2002Date of Patent: November 2, 2004Assignee: Hyosung CorporationInventors: Tae-jung Lee, Soo-myung Choi, Yun-hyuk Bang, Seok-jong Han
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Patent number: 6808557Abstract: A regenerated cellulose-encapsulated active substance and a method for encapsulating an active substance in a regenerated cellulose matrix are disclosed. The distribution of the active substance is preferably substantially homogeneous within the matrix of regenerated cellulose. The regenerated cellulose (i) has about the same molecular weight as the original cellulose from which it is prepared (ii) is substantially free of added substituent groups relative to the starting cellulose and is also substantially free of entrapped ionic liquid degradation products.Type: GrantFiled: March 21, 2003Date of Patent: October 26, 2004Assignees: The University of Alabama, PG Research FoundationInventors: John David Holbrey, Scott K. Spear, Megan B. Turner, Richard Patrick Swatloski, Robin Don Rogers
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Publication number: 20040059106Abstract: A cellulose acylate which is a polymer obtained by substituting cellulose with acyl groups in 2-, 3-, 6-positions. The total degree of acyl substitution in the 2- and 3-positions is regulated to from 1.70 to 1.90. The degree of 6-position acyl substitution is regulated to 0.88 or higher.Type: ApplicationFiled: July 16, 2003Publication date: March 25, 2004Inventors: Tsukasa Yamada, Yasuo Mukunoki
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Patent number: 6676739Abstract: The invention relates to a method for producing a cellulose solution in an aqueous amine oxide, preferably N-methyl-morpholine-N-oxide, for processing to form cellulosed moulded bodies according to the Lyocell method, whereby said solution has an increased thermal stability. Cellulose is suspended in an aqueous amine oxide and the suspension is converted into the cellulose solution. The inventive method is characterised in that the base use of the cellulose used for producing the solution and of the optionally used additives is detected in a dispersion in aqueous amine oxide solution and in that the cellulose solution is formed by adding a base quantity which matches the detected own consumption of the cellulose and optionally the additives. Cellulose solutions having a stability which is essentially independent from the provenance of the used cellulose can he formed.Type: GrantFiled: October 29, 2002Date of Patent: January 13, 2004Assignee: Thuringishces Institut fur Textil und Kunststoff-Forschung E.V.Inventors: Birgit Kosan, Christoph Michels, Ralf-Uwe Bauer, Michael Mooz, Frank-Gunter Niemz
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Publication number: 20030159620Abstract: The invention relates to a method for producing a cellulose solution in an aqueous amine oxide, preferably N-methyl-morpholine-N-oxide, for processing to form cellulosed moulded bodies according to the Lyocell method, whereby said solution has an increased thermal stability. Cellulose is suspended in an aqueous amine oxide and the suspension is converted into the cellulose solution. The inventive method is characterised in that the base use of the cellulose used for producing the solution and of the optionally used additives is detected in a dispersion in aqueous amine oxide solution and in that the cellulose solution is formed by adding a base quantity which matches the detected own consumption of the cellulose and optionally the additives. Cellulose solutions having a stability which is essentially independent from the provenance of the used cellulose can be formed.Type: ApplicationFiled: October 29, 2002Publication date: August 28, 2003Inventors: Birgit Kosan, Christoph Michels, Ralf-Uwe Bauer, Michael Mooz, Frank-Gunter Niemz
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Publication number: 20030136304Abstract: Cellulose solvents, cellulose compositions, and methods of making and using the same. For example, a cellulose composition including cellulose dissolved in the following solvent: an amine-based composition, provided however, the amine-based composition is not ammonia; and a salt selected from the group including a thiocyanate salt, a halide salt, and a nitrate salt. Representative amine-based compositions include hydrazine, hydrazine hydrate, and ethylenediamine.Type: ApplicationFiled: October 30, 2002Publication date: July 24, 2003Applicant: North Carolina State UniversityInventors: John A. Cuculo, Kazuyuki Hattori
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Patent number: 6488876Abstract: The invention relates to a composition intended to be admixed to a moldable solution of cellulose in an aqueous tertiary amine oxide, which composition consists of solid particles, a mixture of a tertiary amine oxide and water, in which the solid particles are dispersed, and at least a further substance, with the proviso that the solid particles and said at least further substance are different from cellulose and that the content of water is such that no cellulose will precipitate when admixing the composition to the moldable cellulose solution. The composition according to the invention is storage stable to a high degree and suitable for introducing additives into the moldable cellulose solution.Type: GrantFiled: February 3, 1999Date of Patent: December 3, 2002Assignee: Lenzing AktiengesellschaftInventor: Harmut Rüf
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Patent number: 6174358Abstract: A method for producing cellulose particles whereby a cellulose solution is dispersed in a regenerant or nonsolvent and the cellulose is regenerated or precipitated in dispersed form into cellulose particles.Type: GrantFiled: September 24, 1998Date of Patent: January 16, 2001Assignee: Cellcat GmbHInventors: Jörg Oberkofler, Alexander Brandner, Jeffrey F. Spedding, Anton Schmalhofer