Oxygen And Nitrogen In The Same Compound (e.g., Amide, Ammonium Alkyl Sulfonate, Urea, Tertiary Amine Oxide, Etc.) Patents (Class 106/200.3)
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Patent number: 11008406Abstract: The invention relates to a method for preparing a cellulose dope comprising mixing and dissolving the cellulosic raw material in dilute and concentrated aqueous organic solvent in a two-stage process to form a homogeneous slurry, followed by heating the homogeneous slurry to obtain a cellulose dope containing 11% to 20% cellulose by weight. The invention also relates to a cellulose dope comprising 11% to 20% cellulose by weight and 73% to 79% aqueous organic solvent wherein the concentration of the cellulosic and metallic impurities in the cellulose dope shows a percent reduction of 20% to 50% from the cellulosic raw material.Type: GrantFiled: August 17, 2017Date of Patent: May 18, 2021Inventors: Vivek Ganvir, Madan Kumar Singh, Sachin Jadhav Gajanan, Yogesh Shinde, Shirish Thakre
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Patent number: 10364385Abstract: Low-dosage hydrate inhibitor (“LDHI”) compounds comprising multiple lipophilic tails and a hydrophilic head may be employed into fluids to inhibit agglomeration of hydrates, among other things. Suitable hydrophilic heads may include quaternary or tertiary ammonium cation moieties, and combinations thereof. Such LDHI compounds in some embodiments may include reaction products of DETA and/or other amines, fatty acid(s), and, optionally, alkyl halide(s). Compounds according to some embodiments may be employed in fluids in various environments, such as a conduit penetrating a subterranean formation, or a conduit carrying fluid in an industrial setting.Type: GrantFiled: July 31, 2018Date of Patent: July 30, 2019Assignee: Multi-Chem Group, LLCInventors: Funian Zhao, Yanqiu Sun, Liangwei Qu, Erick J. Acosta
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Patent number: 10292923Abstract: There are described alkoxy-silanes compounds and related condensation products as cosmetic raw materials and for coating cosmetic powders; synthesis processes of such compounds and condensation products and production of coated cosmetic powders. Said cosmetic powders can be used for preparing cosmetic products such as anhydrous products for face/eyes/lips, cosmetic pencils and face/eyes emulsions.Type: GrantFiled: April 29, 2016Date of Patent: May 21, 2019Assignee: INTERCOS S.P.A.Inventors: Patrizia Valsesia, Gaetano Distefano, Claudio Pirovano, Pietro Rando, Gabriele Depta, Sara Bettinelli
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Patent number: 10040871Abstract: A process for dissolving modified cellulose includes contacting modified cellulose with a solvent in a mixture to form swelled modified cellulose and then contacting the mixture with a salt to dissolve the swelled modified cellulose. The dissolved modified cellulose is used to form at least one of a predictably degrading coating, film, or a fiber.Type: GrantFiled: June 26, 2013Date of Patent: August 7, 2018Assignee: Covidien LPInventors: Valentino Tramontano, Phillip Blaskovich, Rachit Ohri, Joshua Kennedy, Sajida Farooqi
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Patent number: 9205454Abstract: A method for applying an additive, e.g. a fluoropolymer, to cellulose. The method comprises a number of steps. First, solid cellulose, a solvent capable of dissolving cellulose, e.g. NMMO and a dispersion of the additive are brought into contact with each other. The additive is allowed to diffuse into the dissolved cellulose, which is possible as a result of the dissolution of the surface layer of the solid cellulose. The solubility of cellulose in the solvent is then reduced, whereby the additive that has diffused into the dissolved cellulose is incorporated into the resulting solid cellulose. A method for applying a fluoropolymer to cellulose as a surface coat is also described. Flexible bearing components comprising a mat of cellulose fibers and a fluoropolymer which may be made by the methods described.Type: GrantFiled: February 3, 2014Date of Patent: December 8, 2015Assignee: WHITFORD LTD.Inventors: Andrew J. Melville, David J. Topping, David P. Willis
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Publication number: 20130133548Abstract: Formaldehyde-free binder compositions are described that include an aldehyde or ketone, a nitrogen-containing salt of an inorganic acid, and an acidic compound. The acidic compound may be an organic acid, such as maleic acid or citric acid among others. The acidic compound is supplied in quantities that lower the pH of the binder composition to about 5 or less. The binder compositions may be used in methods of binding fiberglass and the resulting fiberglass products have an improved tensile strength due to the addition of the acidic compound.Type: ApplicationFiled: May 23, 2012Publication date: May 30, 2013Inventors: Kiarash Alavi Shooshtari, Uranchimeg Lester, Jawed Asrar
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Publication number: 20130125783Abstract: Formaldehyde-free binder compositions are described that include an aldehyde or ketone, a reaction product between a polyamine and an organic anhydride, and an acidic compound. The acidic compound may be an organic acid, an acidic catalyst, or both. The acidic compound is supplied in quantities that lower the pH of the binder composition to about 5 or less. The binder compositions may be used in methods of binding fiberglass and the resulting fiberglass products have an improved tensile strength due to the addition of the acidic compound.Type: ApplicationFiled: May 23, 2012Publication date: May 23, 2013Inventors: Kiarash Alavi Shooshtari, Uranchimeg Lester, Jawed Asrar
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Publication number: 20130036940Abstract: An exemplary embodiment provides a cardanol-modified silane coupling agent, which can improve strength and toughness by improving adhesion at an interface between a filler and a cellulose resin when being used as a surface-treatment agent, a resin additive, or the like; a cardanol-modified filler subjected to a surface treatment with the cardanol-modified silane coupling agent; and a cellulose resin composition having excellent toughness. More specifically, the exemplary embodiment provides a cardanol-modified silane coupling agent obtained by reacting cardanol or a derivative thereof with an epoxy silane coupling agent or an isocyanate silane coupling agent; a cardanol-modified filler obtained by subjecting a filler to a surface treatment with the cardanol-modified silane coupling agent; a cellulose resin composition comprising the cardanol-modified filler and a cellulose resin; and a cellulose resin composition comprising the cardanol-modified silane coupling agent, a filler and a cellulose resin.Type: ApplicationFiled: December 3, 2010Publication date: February 14, 2013Inventors: Shukichi Tanaka, Masatoshi Iji
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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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Publication number: 20090258561Abstract: The present invention relates to a cellulose carbamate spinning solution, the cellulose carbamate being dissolved in an ionic liquid. The invention relates furthermore to a method for the production of nonwovens in which the cellulose carbamate spinning solution is pressed through the holes of a nozzle bar and stretched by a multiple by means of an air flow. The formed fibre curtain is laid on a perforated conveyer belt, washed and dried. Likewise, the invention relates to nonwovens of this type and also the use thereof.Type: ApplicationFiled: April 7, 2009Publication date: October 15, 2009Applicant: FRAUNHOFER-GESELLSCHAFT zur Forderung der angewandten Forschung e.V.Inventors: Horst Ebeling, Hans-Peter Fink
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Publication number: 20090148611Abstract: It is disclosed an over-coating agent for forming fine patterns which is applied to cover a substrate having thereon photoresist patterns and allowed to shrink under heat so that the spacing between adjacent photoresist patterns is lessened, with the applied film of the over-coating agent being removed substantially completely to form or define fine trace patterns, further characterized by containing either a water-soluble polymer and an amide group-containing monomer or a water-soluble polymer which contains at least (meth)acrylamide as a monomeric component. Also disclosed is a method of forming fine-line patterns using any one of said over-coating agents. According to the invention, the thermal shrinkage of the over-coating agent for forming fine patterns in the heat treatment can be extensively increased, and one can obtain fine-line patterns which exhibit good profiles while satisfying the characteristics required of semiconductor devices.Type: ApplicationFiled: February 10, 2009Publication date: June 11, 2009Inventors: Yoshiki Sugeta, Fumitake Kaneko, Toshikazu Tachikawa
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Publication number: 20090081468Abstract: The invention encompasses compositions with improved adhesive properties and methods of use and manufacture thereof. In particular, the addition of one or more triols to adhesive compositions improved the tensile properties over straight, commercial available pMDI, while also improving cure kinetics.Type: ApplicationFiled: August 6, 2008Publication date: March 26, 2009Applicant: Crowley Chemical CompanyInventor: Christopher Mortensen
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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: 7094448Abstract: Disclosed is a spray pack for use in forming a uniform, stable spray coating, comprising a spray container device and, packed therein, a spraying composition comprising a liquid dispersion medium and, dispersed therein, particulate cellulose having an average degree of polymerization (DP) of not more than 300 and an average particle diameter of not more than 10 ?m, wherein the composition has a cellulose content of from 0.1 to 5.0% by weight, and wherein the composition exhibits a maximum viscosity value (?max) of 1×103 mPa·s or more in the viscosity-shear stress curve obtained, with respect to the composition, using a cone-plate type rotating viscometer in a shear rate region of from 1×10?3 s?1 to 1×102 s?1 and at 25° C. A method for forming a uniform, stable spray coating by using the above-mentioned spray pack is also disclosed.Type: GrantFiled: December 27, 2002Date of Patent: August 22, 2006Assignee: Asahi Kasei Chemical CorporationInventors: Hirofumi Ono, Hideki Amakawa
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Patent number: 6896725Abstract: The invention concerns the use of a water-soluble or water-dispersible polymer having a molecular weight of at least 800, containing at least 5 aldehyde groups per molecule and at least 1 carboxyl group per molecule, the ratio of aldehyde groups to carboxyl groups being higher than 0.75:1, as a wet strength additive. The invention also discloses novel cationic derivatives thereof.Type: GrantFiled: April 25, 2003Date of Patent: May 24, 2005Assignee: SCA Hygiene Products Zeist B.V.Inventors: Jeffrey Wilson Thornton, Dorine Lisa Van Brussel-Verraest, Arie Besemer, Sussan Sandberg
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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: 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: 6800127Abstract: The present invention relates to pigment preparations comprising polyamide particles with an average particle size of below 50 &mgr;m and a pigment of an average particle size below 0.2 &mgr;m. The inventive pigment preparations are useful for coloring high molecular weight material, like coatings, inks and in particular plastics like polyvinyl chloride, polyamide, polyester, polycarbonate and, especially polyamide fibers.Type: GrantFiled: April 29, 2003Date of Patent: October 5, 2004Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Bäbler
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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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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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Publication number: 20020045038Abstract: The invention relates to a process for the production of cellulosic flat films whereby a solution of cellulose is extruded in an aqueous tertiary amine oxide by means of an extrusion die which has an extrusion gap whereby the solution is moulded in the shape of a film and the extruded solution is led via an air gap to a precipitation bath. The process in accordance with the invention is characterised in that an extrusion die is used which has an extrusion gap b of 220 &mgr;m≦b≦280 &mgr;m. Moreover, the invention relates to flat films, obtainable by the amine oxide process with a thickness d of less than 20 &mgr;m, a width B of more than 30 cm, and a factor f of 65 or less, whereby f is defined as f=d*(MD/TD), d is used in &mgr;m and whereby MD stands for the tenacity of the film in the longitudinal direction (N/mm2) and TD for the tenacity of the film in the transverse direction (N/mm2).Type: ApplicationFiled: April 20, 2001Publication date: April 18, 2002Applicant: LENZING AKTIENGESELLSCHAFTInventors: Peter Gspaltl, Christian Schlossnikl
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Patent number: 6190596Abstract: A process for producing cellulosic shaped objects includes extruding and coagulating a solution of chemical wood pulp in a tertiary amine oxide, and possibly a liquid that does not dissolve wood pulp and is miscible with the tertiary amine oxide, the solution capable of being shaped into objects, the process of producing the shapeable solution employing a first wood pulp with a higher degree of polymerization and a second wood pulp with a lower degree of polymerization, and whereby initially a solution of the first wood pulp with a higher degree of polymerization in the tertiary amine oxide and possibly non-dissolving liquid, and a composition containing the second wood pulp with a lower degree of polymerization, tertiary amine oxide, and possibly non-dissolving liquid, are prepared separately, and the solution and composition are subsequently at least mixed to obtain the shapeable solution.Type: GrantFiled: April 9, 1999Date of Patent: February 20, 2001Assignee: Akzo Nobel N.V.Inventors: Derek Budgell, Ulrich Wachsmann, Wilhelm Kramer
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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