Synthetic Resin Containing Spinning Solutions Patents (Class 264/205)
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Patent number: 12031234Abstract: The present invention is directed to a method and a system for the production of at least one polymeric yarn comprising means for mixing a polymer (1) with a first solvent yielding a mixture; means for homogenizing the mixture; means for rendering the mixture inert (21, 22, 23); means for dipping the mixture into a quenching bath (30), wherein an air gap is maintained before the mixture reaches the quenching bath (30) liquid surface forming at least one polymeric yarn; means for drawing (41) the at least one polymeric yarn at least once; means for washing (5) the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn (6); means for drawing at room temperature (7) the at least one polymeric yarn at least once; and means for heat drawing (8) the at least one polymeric yarn at least once.Type: GrantFiled: October 2, 2023Date of Patent: July 9, 2024Assignee: Braskem America, Inc.Inventors: Marcos Roberto Paulino Bueno, Andre Penaquioni, Alessandro Bernardi, Sergio Luiz Dias Almeida, Leandro Ohara Oliveira Santa Rosa, Patricia Freitas Oliveira Fialho, Daniela Zaira Rauber
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Patent number: 11866849Abstract: The present invention is directed to a method and a system for the production of at least one polymeric yarn comprising means for mixing a polymer (1) with a first solvent yielding a mixture; means for homogenizing the mixture; means for rendering the mixture inert (21, 22, 23); means for dipping the mixture into a quenching bath (30), wherein an air gap is maintained before the mixture reaches the quenching bath (30) liquid surface forming at least one polymeric yarn; means for drawing (41) the at least one polymeric yarn at least once; means for washing (5) the at least one polymeric yarn with a second solvent that is more volatile than the first solvent; means for heating the at least one polymeric yarn (6); means for drawing at room temperature (7) the at least one polymeric yarn at least once; and means for heat drawing (8) the at least one polymeric yarn at least once.Type: GrantFiled: March 20, 2020Date of Patent: January 9, 2024Assignee: Braskem America, Inc.Inventors: Marcos Roberto Paulino Bueno, Andre Penaquioni, Alessandro Bernardi, Sergio Luiz Dias Almeida, Leandro Ohara Oliveira Santa Rosa, Patricia Freitas Oliveira Fialho, Daniela Zaira Rauber
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Substrate cleaning apparatus, substrate cleaning system, substrate cleaning method and memory medium
Patent number: 10998183Abstract: A method for cleaning a substrate includes setting a substrate inside a cleaning chamber, supplying on a surface of the substrate a treatment solution which includes a volatile component and forms a treatment film, vaporizing the volatile component of the treatment solution supplied on the surface of the substrate such that the treatment solution solidifies or is cured on the surface of the substrate and the treatment film is formed on the surface of the substrate, and supplying onto the treatment film formed on the surface of the substrate a removal solution which removes the treatment film.Type: GrantFiled: February 11, 2016Date of Patent: May 4, 2021Assignee: TOKYO ELECTRON LIMITEDInventors: Miyako Kaneko, Takehiko Orii, Satoru Shimura, Masami Yamashita, Itaru Kanno -
Patent number: 10780432Abstract: A process for preparing a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW, comprising (i) providing a molding comprising a titanium-containing zeolitic material having framework type MWW; (ii) preparing an aqueous suspension comprising a zinc source and the molding comprising a titanium-containing zeolitic material having framework type MWW prepared in (i); (iii) heating the aqueous suspension prepared in (ii) under autogenous pressure to a temperature of the liquid phase of the aqueous suspension in the range of from 100 to 200° C., obtaining an aqueous suspension comprising a molding comprising zinc and a titanium-containing zeolitic material having framework type MWW; (iv) separating the molding comprising zinc and a titanium-containing zeolitic material having framework type MWW from the liquid phase of the suspension obtained in (iii).Type: GrantFiled: January 18, 2018Date of Patent: September 22, 2020Assignee: BASF SEInventors: Andrei-Nicolae Parvulescu, Ulrich Mueller, Hans-Juergen Luetzel, Joaquim Henrique Teles, Dominic Riedel, Daniel Urbanczyk, Ulrike Wegerle, Markus Weber, Nicolai Tonio Woerz, Christian Mueller
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Patent number: 9279197Abstract: Disclosed herein are a highly uniform spandex and process for making such spandex. More particularly, the polyurethaneurea of which such spandex is prepared has both dialkylurea and cycloalkylurea ends, wherein a chain terminator composition includes a dialkylamine such as diethylamine and a cylcoalkylamine such as cyclohexylamine.Type: GrantFiled: January 5, 2011Date of Patent: March 8, 2016Assignee: INVISTA North America S.a.r.l.Inventor: Steven P. Pardini
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Publication number: 20150137415Abstract: A filtration material comprising a blend of polypropylene and acrylic fibers of round, flat, dog bone, oval or kidney bean shape in any size from 0.08 to 3.3 Dtex. A preferred blend contains about 50 weight percent polypropylene fibers and about 50 weight percent acrylic fibers. The fibers can be blended ranging from 90:10 to 10:90 polypropylene to acrylic. The shape contains 25 weight percent round, flat, oval, dog bone and kidney bean shapes. The fiber blend contains 25 weight percent of at least one size between 0.08 and 3.3 Dtex. Electret fibers incorporated within these blends have 0.02 to 33 weight percent of a charge control agent. These fibers can be used in producing electret material by corona or triboelectric charging methods.Type: ApplicationFiled: December 24, 2014Publication date: May 21, 2015Inventor: Rick L. Chapman
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Publication number: 20150119545Abstract: Provided is a method of fabricating a thermal conductive polymer, including: a) fabricating a gel filament by primarily elongating a solution filament formed by spinning a mixed solution containing an ultra high molecular weight polyolefin (UHMWPO) resin and a first solvent, followed by cooling; b) secondarily elongating the gel filament; c) fabricating a dry filament by removing the solvent from the gel filament, followed by tertiary elongation; and d) converting the dry filament into the gel filament by adding the first solvent to the dry filament; e) removing the first solvent from the converted gel filament; and f) quaternarily elongating the gel filament from which the first solvent is removed.Type: ApplicationFiled: October 29, 2014Publication date: April 30, 2015Inventors: Yongrak MOON, Kangmin JUNG
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Patent number: 9017586Abstract: Polymeric structures, methods for making same, fibrous structures comprising same and fibrous product incorporating same are provided.Type: GrantFiled: May 21, 2010Date of Patent: April 28, 2015Assignee: The Procter & Gamble CompanyInventors: David William Cabell, Paul Dennis Trokhan, David Warren Loebker
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Publication number: 20140283674Abstract: Multi-filament UHMW PE yarns can be produced according to processes that result in improved properties. The UHMW PE can have an intrinsic viscosity in decalin at 135° C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun yarn having a tenacity of greater than about 45 g/d (40.5 g/dtex).Type: ApplicationFiled: June 3, 2014Publication date: September 25, 2014Applicant: HONEYWELL INTERNATIONAL INC.Inventors: THOMAS Y. TAM, JOHN A. YOUNG, NORMAN AMINUDDIN, JOHN E. HERMES
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Publication number: 20140212328Abstract: Embodiments herein generally relate to the use, devices, and compounds for generating singlet oxygen. In some embodiments, the singlet oxygen can be used for fluid purification and/or sterilization.Type: ApplicationFiled: July 24, 2012Publication date: July 31, 2014Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLCInventors: William Brenden Carlson, Gregory David Phelan
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Patent number: 8747715Abstract: Multi-filament UHMW PE yarns can be produced according to processes that result in improved properties. The UHMW PE can have an intrinsic viscosity in decalin at 135° C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun yarn having a tenacity of greater than about 45 g/d (40.5 g/dtex).Type: GrantFiled: April 30, 2010Date of Patent: June 10, 2014Assignee: Honeywell International IncInventors: Thomas Y. Tam, John A. Young, Norman Aminuddin, John E. Hermes
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Patent number: 8623950Abstract: The present invention relates to a preparation method of polyurethaneurea elastic fiber, particularly a preparation method of high heat-resistant elastic fiber which retains unique physical properties of elastic fiber under the high temperature process. The polyurethaneurea elastic fiber of the present invention is characteristically prepared without using 1 functional mono-alcohol generally used to regulate the reaction speed and side-reaction during the prepolymer reaction to produce elastic fiber having excellent heat-resistance particularly for the dyeing processing or re-dyeing of polyester but using ethylenediamine alone as a chain extender for the polymerization. To reduce gel formation in polymer after the secondary polymerization and to regulate change of viscosity in the course of process, the ratio of the chain extender amine to the terminal group of prepolymer of the first polymerization is increased.Type: GrantFiled: December 1, 2008Date of Patent: January 7, 2014Assignee: Tae Kwang Ind. Co., Ltd.Inventors: Ickgy Shin, Inrak Jung, Haedong Kim
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Publication number: 20130328234Abstract: The invention relates to polytitanic acid esters having linear cross-linking structures, obtainable by reacting a titanium compound that is soluble in an alcohol, in water or in a mixture of water and alcohol and that has the composition (I) Ti(R)mXn??(I), wherein the groups R independently mean alkoxy, carboxy, or OH, X means halogen, m=0 to 4, n=0 to 4, and m+n=4, with a compound (II) that contains the following structural unit: [O?CR4—(CR5R3)p—CR1R2—O]?, wherein p is 0 or 1 and wherein (a) R1 and R2 are independently selected from among hydrogen, alkyl and alkenyl, R3 and R5 are independently selected from among hydrogen or an unsubstituted or substituted alkyl or alkenyl, R4 is OH or O(Mx+)1/x, wherein M is a metal or ammonium and x is 1 or 2, or (b) R1 and R2 together mean ?O and R3, R5 and R4 are independently selected from among hydrogen, alkyl and alkenyl, wherein the titanium compound (I) is reacted with compound (II) at a molar ratio of 1 to 0.5-1.Type: ApplicationFiled: February 14, 2012Publication date: December 12, 2013Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.Inventors: Rainer Jahn, Miranda Rothenburger-Glaubitt, Walther Glaubitt, Joern Probst
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Patent number: 8551390Abstract: Embodiments of the present disclosure provide electrospinning devices, methods of use, uncompressed fibrous mesh, and the like, are disclosed.Type: GrantFiled: April 7, 2011Date of Patent: October 8, 2013Assignee: The UAB FoundationInventors: Ho-Wook Jun, Ajay Tambralli, Bryan Adam Blakeney, Derrick Dean
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Publication number: 20130241104Abstract: Gel-spinning processes for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, include applying a draw ratio DRfluid to fluid filaments obtained by spinning a solution of UHMWPE through a spinneret and into an air gap, is at least 450, wherein DRfluid=DRsp×DRag, the DRsp and DRag being the draw ratios in the spinholes and in the air gap, respectively; and provided that DRag is at least 30. The UHMWPE multifilament yarns produced thereof were characterized by a tensile strength of at least 3.5 GPa and contained filaments having a dtex of at most 0.5. The invention further relates to products comprising said yarns, e.g. fabrics, medical devices and composite and ballistic articles.Type: ApplicationFiled: May 7, 2013Publication date: September 19, 2013Applicant: DSM IP ASSETS B.V.Inventors: Joseph Arnold Paul Maria SIMMELINK, Roelof MARISSEN
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Patent number: 8486318Abstract: Provided is a functional fiber and a fiber aggregate for realizing various functions, an adhesive for easily bonding electronic components, and a method for manufacturing the same. Particularly, a fiber extended in a length direction includes a carrier polymer and a plurality of functional particles, wherein the plurality of functional particles are embedded in the carrier polymer and physically fixed to the carrier polymer to be integrated.Type: GrantFiled: May 19, 2011Date of Patent: July 16, 2013Assignees: Optopac Co., Ltd., Korea Advanced Institute of Science and Technology, Micropack Co., Ltd.Inventors: Deok Hoon Kim, Kyung Wook Paik, Kyoung Lim Suk, Jae Ok Kim
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Publication number: 20130134620Abstract: Methods relating to polymer-bioceramic composite implantable medical devices are disclosed.Type: ApplicationFiled: January 25, 2013Publication date: May 30, 2013Applicant: Abbott Cardiovascular Systems Inc.Inventor: Abbott Cardiovascular Systems Inc.
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Patent number: 8361366Abstract: A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.Type: GrantFiled: October 28, 2010Date of Patent: January 29, 2013Assignee: Honeywell International Inc.Inventors: Thomas Yiu-Tai Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
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Patent number: 8361365Abstract: A process for electroblowing a multiple layered sheet using multiple spinning beams to produce different component webs wherein the sheet doesn't stick to the forming screen and has improved web stability.Type: GrantFiled: December 14, 2007Date of Patent: January 29, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Joseph Brian Hovanec, Michael John Moore, Sr.
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Patent number: 8303874Abstract: The invention relates to a process for forming fibers from a spinning solution utilizing a high speed rotary sprayer. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced.Type: GrantFiled: November 7, 2006Date of Patent: November 6, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Larry R Marshall, Jack Eugene Armantrout, Tao Huang, John R Moore, Neal Pfeiffenberger
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Patent number: 8147745Abstract: To provide a process whereby an ultrafine fiber of a fluorinated ion exchange resin can be produced easily at low cost, and a method whereby a catalyst layer having a high gas diffusion property can be produced easily at low cost.Type: GrantFiled: October 14, 2009Date of Patent: April 3, 2012Assignee: Asahi Glass Company, LimitedInventors: Ichiro Terada, Seigo Kotera, Katsuya Fujii, Hiroyuki Watabe, Hiroshi Uyama, Chie Matsubara
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Patent number: 8137809Abstract: The invention relates to a gel spun, ultrahigh molecular weight polyethylene (UHMWPE) multifilament yarn characterized in that said yarn comprises individual monofilaments having a coefficient of variation of their linear density, hereafter CVintra, of less than 30%, wherein the CVintra of a monofilament was determined from linear density values corresponding to a number of 20 representative lengths randomly extracted by cutting from said monofilament and using Formula 1 wherein ?i is the linear density of any one of the representative lengths extracted from the monofilament under investigation and Formula 1A is the averaged linear density over the n=20 measured linear densities of said n=20 representative lengths. The invention also relates to a gel spun UHMWPE multifilament yarn characterized in that the yarn has a coefficient of variation in linear density between the monofilaments comprising said yarn, hereafter CVinter, of less than 50%.Type: GrantFiled: April 9, 2009Date of Patent: March 20, 2012Assignee: DSM IP Assets B.V.Inventors: Roelof Marissen, Harm van der Werff, Joseph Arnold Paul Maria Simmelink, Evert Florentinus Florimondus De Danschutter
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Patent number: 8114325Abstract: A fluidized mixture is issued from a nozzle comprising a fan jet at the outlet, causing the mixture to spread as it is issued. The issued material is collected on a moving collection surface located a distance of between 0.25 and 13 cm from the outlet of the nozzle, prior to the onset of large scale turbulence in the fluid jet. The resulting product has good basis weight uniformity.Type: GrantFiled: July 25, 2008Date of Patent: February 14, 2012Assignee: E.I. du Pont de Nemours and CompanyInventors: Jack Eugene Armantrout, Robert Anthony Marin, Larry R. Marshall
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Patent number: 8105521Abstract: Disclosed are wholly aromatic polyamide filament and a method of manufacturing the same, characterized in that, in a process of preparing wholly aromatic polyamide polymer, a multiple tubular feed pipe for polymeric monomer and polymerization solvent with specific construction of adjacent inner paths 11a and outer paths 11b which are alternately arranged one another is used to feed either aromatic diacid chloride A or aromatic diamine dissolved in the polymerization solvent B into a polymerization reactor 20 through corresponding one among the inner and outer paths 11a and 11b. The present invention is effective to progress uniform and homogeneous polymerization over all of area of a polymerization reactor 20 leading to reduction of deviation in degree of polymerization, since polymeric monomers are miscible and react together very well immediately after putting the monomers into the reactor 20.Type: GrantFiled: July 5, 2006Date of Patent: January 31, 2012Assignee: Kolon Industries, Inc.Inventors: In-Sik Han, Jae-Young Lee, Seung-Hwan Lee, Chang-Bae Lee, So-Yeon Kwon
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Patent number: 8104624Abstract: A multipolymeric mixture is provided that includes a hydrophobic polymer, two different grades of a water-soluble polymer, water as non-solvent and a solvent suitable for all polymers involved. The dissolved hydrophobic polymer has the affinity to enmesh the water-soluble polymers to form a clear and viscous dope. Water-soluble polymers contribute to the pore formation process and hydrophilicity of the finally coagulated membrane according to the makeup of their molecular weight distribution. Water as a non-solvent takes the dope very near towards unstable zone, which helps in speeding up the membrane formation process in a diffusion induced phase inversion technique. The dope is then spun through a concentric orifice spinneret and solidified by passing it through a coagulation bath to form hollow fiber asymmetric membranes of ultra filtration grade with superior water permeability and separation characters even at higher feed turbidity.Type: GrantFiled: June 10, 2009Date of Patent: January 31, 2012Assignee: Aquatech International CorporationInventors: Ravi Chidambaran, Devesh Sharma, Pavan Raina, Sugata Das
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Patent number: 8092732Abstract: The present invention provides a processing method of the natural cellulose fiber with feature for enhancing the capability of antifungi, antibacteria and deodorization. The procedure is that firstly modify and reduce the properties of the natural chitosan of high polymer material to nanometer scale; secondly dunk the chitosan into the syrup-like mixture of wood pulp and NMMO solvent to yield quasi-dope; thirdly dehydrate the quasi-dope of paste mixture to form the mud-like dope; fourthly spin the dope by dryjet wet spinning method; fifthly regenerate the filament in coagulation bath, water rinse and dry; finally water rinse, dry, apply the lubricant to finish. The water soluble chitosan, which has been treated by property modification and reduced to nanometer scale, can effectively and completely solve in the cellulose of low DP to offer wider extent of selection in the DP and better flexibility of adding percentage in content of modified chitosan.Type: GrantFiled: December 31, 2008Date of Patent: January 10, 2012Assignee: Acelon Chemical and Fiber CorporationInventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang
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Publication number: 20110260357Abstract: A thin, uniform membrane comprising polymeric fibrils or a combination of fibrils and particles, wherein the fibrils have randomly convoluted cross-sections, and a process for making the membrane are disclosed. The membrane may be on the surface of a substrate as part of a composite sheet, or as a stand-alone structure.Type: ApplicationFiled: June 30, 2011Publication date: October 27, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: ROBERT ANTHONY MARIN, LARRY R. MARSHALL, AMANDA DAWN MILLER, LEWIS EDWARD MANRING
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Patent number: 7998575Abstract: The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades.Type: GrantFiled: December 19, 2007Date of Patent: August 16, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
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Patent number: 7998388Abstract: A thin, uniform membrane comprising polymeric fibrils or a combination of fibrils and particles, wherein the fibrils have randomly convoluted cross-sections, and a process for making the membrane are disclosed. The membrane may be on the surface of a substrate as part of a composite sheet, or as a stand-alone structure.Type: GrantFiled: May 14, 2009Date of Patent: August 16, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert Anthony Marin, Larry R. Marshall, Amanda Dawn Miller
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Publication number: 20110168980Abstract: A nanofiber composite including a nanofiber formed of a hydrophobic polymer, a nanowire formed of a conductive or semiconductive organic material that is oriented in the nanofiber in the longitudinal direction of the nanofiber, and an ionic active material.Type: ApplicationFiled: June 30, 2010Publication date: July 14, 2011Inventors: Jae-hyun Hur, Jong-jin Park, Seung-nam Cha, Jong-min Kim, Chi-yul Yoon
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Publication number: 20110083415Abstract: The invention relates to a gel spun, ultrahigh molecular weight polyethylene (UHMWPE) multifilament yarn characterized in that said yarn comprises individual monofilaments having a coefficient of variation of their linear density, hereafter CVintra, of less than 30%, wherein the CVintra of a monofilament was determined from linear density values corresponding to a number of 20 representative lengths randomly extracted by cutting from said monofilament and using Formula 1 wherein ?i is the linear density of any one of the representative lengths extracted from the monofilament under investigation and Formula 1A is the averaged linear density over the n=20 measured linear densities of said n=20 representative lengths. The invention also relates to a gel spun UHMWPE multifilament yarn characterized in that the yarn has a coefficient of variation in linear density between the monofilaments comprising said yarn, hereafter CVinter, of less than 50%.Type: ApplicationFiled: April 9, 2009Publication date: April 14, 2011Inventors: Roelof Marissen, Harm Van der Weff, Joseph Arnold Paul Maria Simmelink, Evert Florentinus Florimon De Danschutter
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Publication number: 20110045293Abstract: A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.Type: ApplicationFiled: October 28, 2010Publication date: February 24, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Thomas Y-T. Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
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Patent number: 7846363Abstract: A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.Type: GrantFiled: June 8, 2007Date of Patent: December 7, 2010Assignee: Honeywell International Inc.Inventors: Thomas Y-T. Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
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Publication number: 20100268331Abstract: The invention relates to a gel-spinning process for producing a high tensile strength ultra high molecular weight polyethylene (UHMWPE) multifilament yarn comprising ultra-low dtex filaments, the process being characterized in that the draw ratio DRfluid applied to fluid filaments obtained by spinning a solution of UHMWPE through a spinneret and into an air gap, is at least 450, wherein DRfluid=DRsp*DRag, the DRsp and DRag being the draw ratios in the spinholes and in the air gap, respectively; and provided that DRag is at least 30. The UHMWPE multifilament yarns produced thereof were characterized by a tensile strength of at least 3.5 GPa and contained filaments having a dtex of at most 0.5. The invention further relates to products comprising said yarns, e.g. fabrics, medical devices and composite and ballistic articles.Type: ApplicationFiled: December 17, 2008Publication date: October 21, 2010Inventors: Joseph Arnold Paul Maria J.A.P.M Simmelink, Roelof Marissen
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Publication number: 20100249831Abstract: The invention relates to a process for producing gel-spun ultra high molecular weight polyethylene (UHMWPE) fibres having high tensile strengths and improved creep rates wherein the UHMWPE used in said process comprises per thousand carbon atoms between 0.1 and 1.3 methyl side groups; and between 0.08 and 0.6 of methyl end groups; and wherein the overall draw ratio (DRoverall=DRfluid×DRgel×DRsolid) is at least 7000 provided that the fluid draw ratio DRfluid=DRsp×DRag is at least 100, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air gap. The invention further relates to gel-spun UHMWPE fibres produced thereof. The gel-spun UHMWPE fibres of the invention have a tensile strength of at least 4 GPa, and a creep rate as measured at 70° C. under a load of 600 MPa of at most 6×10?7 sec?1.Type: ApplicationFiled: October 6, 2008Publication date: September 30, 2010Inventors: Martin Pieter Vlasblom, Roelof R. Marissen, Joseph Arnold Paul Maria J.A.P.M Simmelink
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Publication number: 20100233480Abstract: A process for producing fiber of ultra high molecular weight polyethylene, with a flat cross-section and high cohesiveness, is disclosed. The process includes: distributing the powder of UHMWPE into a solvent evenly; preparing an uniform emulsion mixture by properly untangling with high shear; at the same time adding polar polymer comprising polar groups, for example a carboxyl group, a carbonyl group, an ether group, or an ester group and so on; evenly distributing the polar polymer together with the polyethylene powder in the solvent to form an uniform emulsion mixture; forming a gel filament from the emulsion mixture by gel spinning method, then extracting, drying, and stretching so as to obtain the UHMWPE fiber, with a flat cross section, high strength and cohesiveness. By properly untangling, the swelling and dissolving of the ultra high molecular weight polyethylene can be accelerated, while the polar polymer being evenly distributed therein can significantly improve the adhesive property of the fiber.Type: ApplicationFiled: October 9, 2007Publication date: September 16, 2010Inventors: Panpan Hu, Xiulan You, Zhaofeng Liu
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Patent number: 7780889Abstract: The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades.Type: GrantFiled: December 19, 2007Date of Patent: August 24, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
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Patent number: 7771637Abstract: The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades.Type: GrantFiled: December 19, 2007Date of Patent: August 10, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
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Patent number: 7771636Abstract: The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades.Type: GrantFiled: December 19, 2007Date of Patent: August 10, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
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Patent number: 7771638Abstract: The invention relates to a continuous dry spinning process for preparing a fiber from a polymer solution having concentrations of polymer, salt, solvent and water. After the fiber is extruded and quenched, the fiber is placed in contact with a conditioning solution comprising concentrations of solvent, salt, and water. The conditioning solution acts upon the fiber to plasticize the fiber prior to being drawn. The conditioning solution has concentrations of solvent, salt, and water so that the fiber is plasticized to the extent necessary for drawing but does not plasticize the fiber to such an extent as to re-dissolve the fiber into a polymeric solution. A heat-treated fiber manufactured from this process has improved shrinkage and can be colored to darker shades.Type: GrantFiled: December 19, 2007Date of Patent: August 10, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark H. Headinger, David W. Luckey, Edgar N. Rudisill
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Publication number: 20100163488Abstract: A hollow fiber membrane made of two coextruded layers A and B, wherein layer B has a non-woven type structure having a mesh size of 0.1 to 10 ?m and layer A has a porous structure. A method for producing a membrane according to the invention and the use thereof is also disclosed.Type: ApplicationFiled: April 21, 2008Publication date: July 1, 2010Inventors: Rainer Fislage, Klaus Heilmann, Torsten Keller, Holger Lichau, Igor Raiko, Roland Sander
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Patent number: 7736563Abstract: The present invention relates to a full dull polyamide 6 yarn and a process for preparing the same. The yarn of this invention contains 1.5 to 2.5% by weight of titanium dioxide relative to the weight of the yarn, has 35 to 95 titanium dioxide particles having a major axial length of greater than 5 ?m being contained in 50 mg of the yarn, and contains 0.1 to 0.5% by weight of phosphate salt (wetting agent) relative to the weight of titanium dioxide. In the process of this invention, 0.1 to 0.5% by weight of phosphate salt relative to the weight of titanium dioxide is added as a wetting agent, carprolactam is applied along with water upon concentration correction, and naphthalene sulfonate based salt is applied along with titanium dioxide slurry during the process of polyamide 6 polymerization.Type: GrantFiled: November 6, 2006Date of Patent: June 15, 2010Assignee: Kolon Industries, Inc.Inventors: Jae-Young Kim, Young-Tae Park
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Publication number: 20100143643Abstract: The invention relates to a process for making high-performance polyethylene multi-filament yarn comprising the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRfluid; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRsolid of at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DRfluid=DRsp*DRag of at least 150, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air-gap, with DRsp being greater than 1 and DRag at least 1.Type: ApplicationFiled: October 8, 2009Publication date: June 10, 2010Applicant: DSM IP ASSETS B.V.Inventors: Joseph Arnold Paul Maria Simmelink, Jacobus Johannes Mencke, Martinus Johannes Nicolaas Jacobs, Roeloef Marissen
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Patent number: 7713459Abstract: The present invention relates to cellulose fiber containing 500 to 2000 of filaments and having homogeneous physical properties and the multi-filaments according to the present invention is characterized in that the strength and the breaking elongation of the multi-filaments are 4 to 9 g/d and 4 to 15%, respectively. In particular, the present invention is characterized in that each mono-filament selected 100 strands from every three part divided from multi-filaments has properties as following: (a) 3 to 9 g/d in average strength, 7 to 15% in average breaking elongation and 0.035 to 0.055 in by birefringence, (b) the differences of the above three parts are below 1.0 g/d in average strength, 1.5% in breaking elongation and 0.7 denier in denier, (c) the CV (%) (coefficient of variation) of the above three parts are below 10%, and (d) the birefringence differences of the above three parts are below 0.004.Type: GrantFiled: June 22, 2007Date of Patent: May 11, 2010Assignee: HYOSUNG CorporationInventors: Ik-Hyun Kwon, Soo-Myung Choi, Tae-Jung Lee, Jae-Shik Choi
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Publication number: 20100096769Abstract: To provide a process whereby an ultrafine fiber of a fluorinated ion exchange resin can be produced easily at low cost, and a method whereby a catalyst layer having a high gas diffusion property can be produced easily at low cost.Type: ApplicationFiled: October 14, 2009Publication date: April 22, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Ichiro TERADA, Seigo Kotera, Katsuya Fujii, Hiroyuki Watabe, Hiroshi Uyama, Chie Matsubara
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Patent number: 7686987Abstract: A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, polycarbonate films are prepared by simultaneous application of multiple liquid layers to a moving carrier substrate. After solvent removal, the polycarbonate films are peeled from the sacrificial carrier substrate. Polycarbonate films prepared by the current invention exhibit good dimensional stability and low birefringence.Type: GrantFiled: April 5, 2005Date of Patent: March 30, 2010Assignee: Eastman Kodak CompanyInventor: Marcus S. Bermel
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Patent number: 7674409Abstract: Methods for preparation of high strength yarns having superior yarn-to-yarn uniformity of denier, tenacity and tensile modulus and uniform unidirectional fibrous sheets. Ballistic composites prepared from these yarns and fibrous sheets have improved uniformity of ballistic resistance. The drawn yarns, fibrous sheets and articles made therefrom are more uniform than the prior art and are useful in applications requiring impact absorption and ballistic resistance, such as body armor, helmets, breast plates, helicopter seats, spall shields; composite sports equipment such as kayaks, canoes, bicycles and boats; and in fishing line, sails, ropes, sutures and fabrics.Type: GrantFiled: September 25, 2006Date of Patent: March 9, 2010Assignee: Honeywell International Inc.Inventors: Thomas Y-T. Tam, Chok B. Tan, Brian D. Arvidson
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Publication number: 20090308805Abstract: A multipolymeric mixture is provided that includes a hydrophobic polymer, two different grades of a water-soluble polymer, water as non-solvent and a solvent suitable for all polymers involved. The dissolved hydrophobic polymer has the affinity to enmesh the water-soluble polymers to form a clear and viscous dope. Water-soluble polymers contribute to the pore formation process and hydrophilicity of the finally coagulated membrane according to the makeup of their molecular weight distribution. Water as a non-solvent takes the dope very near towards unstable zone, which helps in speeding up the membrane formation process in a diffusion induced phase inversion technique. The dope is then spun through a concentric orifice spinneret and solidified by passing it through a coagulation bath to form hollow fiber asymmetric membranes of ultra filtration grade with superior water permeability and separation characters even at higher feed turbidity.Type: ApplicationFiled: June 10, 2009Publication date: December 17, 2009Inventors: Ravi Chidambaran, Devesh Sharma, Pavan Raina, Sugata Das
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Publication number: 20090295019Abstract: The present invention provides polymer gel-processing techniques and polymer articles of high modulus.Type: ApplicationFiled: August 13, 2009Publication date: December 3, 2009Applicant: Eidgenossische Technische Hochschule ZurichInventors: Magnus Kristiansen, Theo Tervoort, Paul Smith
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Patent number: RE41268Abstract: A process for spinning high molecular weight poly (alpha-olefin) filament, particularly ultrahigh molecular weight polyethylene filament, from solution in a volatile spinning solvent with recovery and recycling of the solvent.Type: GrantFiled: October 23, 2008Date of Patent: April 27, 2010Assignee: Honeywell International Inc.Inventor: Sheldon Kavesh