Synthetic Resin Containing Spinning Solutions Patents (Class 264/205)
  • Patent number: 12031234
    Abstract: 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: Grant
    Filed: October 2, 2023
    Date of Patent: July 9, 2024
    Assignee: 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
  • Patent number: 11866849
    Abstract: 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: Grant
    Filed: March 20, 2020
    Date of Patent: January 9, 2024
    Assignee: 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
  • Patent number: 10998183
    Abstract: 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: Grant
    Filed: February 11, 2016
    Date of Patent: May 4, 2021
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Miyako Kaneko, Takehiko Orii, Satoru Shimura, Masami Yamashita, Itaru Kanno
  • Patent number: 10780432
    Abstract: 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: Grant
    Filed: January 18, 2018
    Date of Patent: September 22, 2020
    Assignee: BASF SE
    Inventors: Andrei-Nicolae Parvulescu, Ulrich Mueller, Hans-Juergen Luetzel, Joaquim Henrique Teles, Dominic Riedel, Daniel Urbanczyk, Ulrike Wegerle, Markus Weber, Nicolai Tonio Woerz, Christian Mueller
  • Patent number: 9279197
    Abstract: 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: Grant
    Filed: January 5, 2011
    Date of Patent: March 8, 2016
    Assignee: INVISTA North America S.a.r.l.
    Inventor: Steven P. Pardini
  • Publication number: 20150137415
    Abstract: 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: Application
    Filed: December 24, 2014
    Publication date: May 21, 2015
    Inventor: Rick L. Chapman
  • Publication number: 20150119545
    Abstract: 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: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Inventors: Yongrak MOON, Kangmin JUNG
  • Patent number: 9017586
    Abstract: Polymeric structures, methods for making same, fibrous structures comprising same and fibrous product incorporating same are provided.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 28, 2015
    Assignee: The Procter & Gamble Company
    Inventors: David William Cabell, Paul Dennis Trokhan, David Warren Loebker
  • Publication number: 20140283674
    Abstract: 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: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: THOMAS Y. TAM, JOHN A. YOUNG, NORMAN AMINUDDIN, JOHN E. HERMES
  • Publication number: 20140212328
    Abstract: 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: Application
    Filed: July 24, 2012
    Publication date: July 31, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: William Brenden Carlson, Gregory David Phelan
  • Patent number: 8747715
    Abstract: 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: Grant
    Filed: April 30, 2010
    Date of Patent: June 10, 2014
    Assignee: Honeywell International Inc
    Inventors: Thomas Y. Tam, John A. Young, Norman Aminuddin, John E. Hermes
  • Patent number: 8623950
    Abstract: 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: Grant
    Filed: December 1, 2008
    Date of Patent: January 7, 2014
    Assignee: Tae Kwang Ind. Co., Ltd.
    Inventors: Ickgy Shin, Inrak Jung, Haedong Kim
  • Publication number: 20130328234
    Abstract: 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: Application
    Filed: February 14, 2012
    Publication date: December 12, 2013
    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
    Inventors: Rainer Jahn, Miranda Rothenburger-Glaubitt, Walther Glaubitt, Joern Probst
  • Patent number: 8551390
    Abstract: Embodiments of the present disclosure provide electrospinning devices, methods of use, uncompressed fibrous mesh, and the like, are disclosed.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: October 8, 2013
    Assignee: The UAB Foundation
    Inventors: Ho-Wook Jun, Ajay Tambralli, Bryan Adam Blakeney, Derrick Dean
  • Publication number: 20130241104
    Abstract: 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: Application
    Filed: May 7, 2013
    Publication date: September 19, 2013
    Applicant: DSM IP ASSETS B.V.
    Inventors: Joseph Arnold Paul Maria SIMMELINK, Roelof MARISSEN
  • Patent number: 8486318
    Abstract: 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: Grant
    Filed: May 19, 2011
    Date of Patent: July 16, 2013
    Assignees: 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
  • Publication number: 20130134620
    Abstract: Methods relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Application
    Filed: January 25, 2013
    Publication date: May 30, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventor: Abbott Cardiovascular Systems Inc.
  • Patent number: 8361366
    Abstract: 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: Grant
    Filed: October 28, 2010
    Date of Patent: January 29, 2013
    Assignee: Honeywell International Inc.
    Inventors: Thomas Yiu-Tai Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
  • Patent number: 8361365
    Abstract: 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: Grant
    Filed: December 14, 2007
    Date of Patent: January 29, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Joseph Brian Hovanec, Michael John Moore, Sr.
  • Patent number: 8303874
    Abstract: 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: Grant
    Filed: November 7, 2006
    Date of Patent: November 6, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Larry R Marshall, Jack Eugene Armantrout, Tao Huang, John R Moore, Neal Pfeiffenberger
  • Patent number: 8147745
    Abstract: 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: Grant
    Filed: October 14, 2009
    Date of Patent: April 3, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Ichiro Terada, Seigo Kotera, Katsuya Fujii, Hiroyuki Watabe, Hiroshi Uyama, Chie Matsubara
  • Patent number: 8137809
    Abstract: 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: Grant
    Filed: April 9, 2009
    Date of Patent: March 20, 2012
    Assignee: DSM IP Assets B.V.
    Inventors: Roelof Marissen, Harm van der Werff, Joseph Arnold Paul Maria Simmelink, Evert Florentinus Florimondus De Danschutter
  • Patent number: 8114325
    Abstract: 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: Grant
    Filed: July 25, 2008
    Date of Patent: February 14, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Jack Eugene Armantrout, Robert Anthony Marin, Larry R. Marshall
  • Patent number: 8105521
    Abstract: 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: Grant
    Filed: July 5, 2006
    Date of Patent: January 31, 2012
    Assignee: Kolon Industries, Inc.
    Inventors: In-Sik Han, Jae-Young Lee, Seung-Hwan Lee, Chang-Bae Lee, So-Yeon Kwon
  • Patent number: 8104624
    Abstract: 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: Grant
    Filed: June 10, 2009
    Date of Patent: January 31, 2012
    Assignee: Aquatech International Corporation
    Inventors: Ravi Chidambaran, Devesh Sharma, Pavan Raina, Sugata Das
  • Patent number: 8092732
    Abstract: 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: Grant
    Filed: December 31, 2008
    Date of Patent: January 10, 2012
    Assignee: Acelon Chemical and Fiber Corporation
    Inventors: Wen-Tung Chou, Ming-Yi Lai, Kun-Shan Huang
  • Publication number: 20110260357
    Abstract: 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: Application
    Filed: June 30, 2011
    Publication date: October 27, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: ROBERT ANTHONY MARIN, LARRY R. MARSHALL, AMANDA DAWN MILLER, LEWIS EDWARD MANRING
  • Patent number: 7998575
    Abstract: 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: Grant
    Filed: December 19, 2007
    Date of Patent: August 16, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
  • Patent number: 7998388
    Abstract: 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: Grant
    Filed: May 14, 2009
    Date of Patent: August 16, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Robert Anthony Marin, Larry R. Marshall, Amanda Dawn Miller
  • Publication number: 20110168980
    Abstract: 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: Application
    Filed: June 30, 2010
    Publication date: July 14, 2011
    Inventors: Jae-hyun Hur, Jong-jin Park, Seung-nam Cha, Jong-min Kim, Chi-yul Yoon
  • Publication number: 20110083415
    Abstract: 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: Application
    Filed: April 9, 2009
    Publication date: April 14, 2011
    Inventors: Roelof Marissen, Harm Van der Weff, Joseph Arnold Paul Maria Simmelink, Evert Florentinus Florimon De Danschutter
  • Publication number: 20110045293
    Abstract: 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: Application
    Filed: October 28, 2010
    Publication date: February 24, 2011
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Thomas Y-T. Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
  • Patent number: 7846363
    Abstract: 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: Grant
    Filed: June 8, 2007
    Date of Patent: December 7, 2010
    Assignee: Honeywell International Inc.
    Inventors: Thomas Y-T. Tam, Qiang Zhou, John A. Young, Charles R. Arnett, John E. Hermes
  • Publication number: 20100268331
    Abstract: 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: Application
    Filed: December 17, 2008
    Publication date: October 21, 2010
    Inventors: Joseph Arnold Paul Maria J.A.P.M Simmelink, Roelof Marissen
  • Publication number: 20100249831
    Abstract: 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: Application
    Filed: October 6, 2008
    Publication date: September 30, 2010
    Inventors: Martin Pieter Vlasblom, Roelof R. Marissen, Joseph Arnold Paul Maria J.A.P.M Simmelink
  • Publication number: 20100233480
    Abstract: 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: Application
    Filed: October 9, 2007
    Publication date: September 16, 2010
    Inventors: Panpan Hu, Xiulan You, Zhaofeng Liu
  • Patent number: 7780889
    Abstract: 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: Grant
    Filed: December 19, 2007
    Date of Patent: August 24, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
  • Patent number: 7771637
    Abstract: 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: Grant
    Filed: December 19, 2007
    Date of Patent: August 10, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
  • Patent number: 7771636
    Abstract: 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: Grant
    Filed: December 19, 2007
    Date of Patent: August 10, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark H. Headinger, Edgar N. Rudisill, David W. Luckey
  • Patent number: 7771638
    Abstract: 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: Grant
    Filed: December 19, 2007
    Date of Patent: August 10, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark H. Headinger, David W. Luckey, Edgar N. Rudisill
  • Publication number: 20100163488
    Abstract: 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: Application
    Filed: April 21, 2008
    Publication date: July 1, 2010
    Inventors: Rainer Fislage, Klaus Heilmann, Torsten Keller, Holger Lichau, Igor Raiko, Roland Sander
  • Patent number: 7736563
    Abstract: 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: Grant
    Filed: November 6, 2006
    Date of Patent: June 15, 2010
    Assignee: Kolon Industries, Inc.
    Inventors: Jae-Young Kim, Young-Tae Park
  • Publication number: 20100143643
    Abstract: 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: Application
    Filed: October 8, 2009
    Publication date: June 10, 2010
    Applicant: DSM IP ASSETS B.V.
    Inventors: Joseph Arnold Paul Maria Simmelink, Jacobus Johannes Mencke, Martinus Johannes Nicolaas Jacobs, Roeloef Marissen
  • Patent number: 7713459
    Abstract: 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: Grant
    Filed: June 22, 2007
    Date of Patent: May 11, 2010
    Assignee: HYOSUNG Corporation
    Inventors: Ik-Hyun Kwon, Soo-Myung Choi, Tae-Jung Lee, Jae-Shik Choi
  • Publication number: 20100096769
    Abstract: 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: Application
    Filed: October 14, 2009
    Publication date: April 22, 2010
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Ichiro TERADA, Seigo Kotera, Katsuya Fujii, Hiroyuki Watabe, Hiroshi Uyama, Chie Matsubara
  • Patent number: 7686987
    Abstract: 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: Grant
    Filed: April 5, 2005
    Date of Patent: March 30, 2010
    Assignee: Eastman Kodak Company
    Inventor: Marcus S. Bermel
  • Patent number: 7674409
    Abstract: 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: Grant
    Filed: September 25, 2006
    Date of Patent: March 9, 2010
    Assignee: Honeywell International Inc.
    Inventors: Thomas Y-T. Tam, Chok B. Tan, Brian D. Arvidson
  • Publication number: 20090308805
    Abstract: 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: Application
    Filed: June 10, 2009
    Publication date: December 17, 2009
    Inventors: Ravi Chidambaran, Devesh Sharma, Pavan Raina, Sugata Das
  • Publication number: 20090295019
    Abstract: The present invention provides polymer gel-processing techniques and polymer articles of high modulus.
    Type: Application
    Filed: August 13, 2009
    Publication date: December 3, 2009
    Applicant: Eidgenossische Technische Hochschule Zurich
    Inventors: Magnus Kristiansen, Theo Tervoort, Paul Smith
  • Patent number: RE41268
    Abstract: 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: Grant
    Filed: October 23, 2008
    Date of Patent: April 27, 2010
    Assignee: Honeywell International Inc.
    Inventor: Sheldon Kavesh