Polyamide, Polyimide Or Polyester Patents (Class 428/395)
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Publication number: 20140060409Abstract: The invention relates to a reinforcing textile thread (82) for an inflatable sail, such as a rigging sail or a flight sail, including a plurality of filaments which are agglutinated so as to form an elongate unitary body (820), and a binder (822) which ensures the cohesion among at least some of the filaments (821) of the unitary body (820), and which consists of a coating material. In order to guarantee an effective, directed reinforcement effect within an inflatable sail without limiting the lifespan of said sail, the unitary body has, in the cross-section thereof, an oblong outline, wherein the ratio of the maximum width (e) of said outline, which corresponds to a thickness of the unitary body, to the maximum length (l) of said outline, which corresponds to a width of the unitary body, is less than 0.06, a plurality of filaments (821) being arranged in series over the thickness of the unitary body.Type: ApplicationFiled: May 4, 2012Publication date: March 6, 2014Applicant: PORCHER INDUSTRIESInventors: Laurence Pollet, Cécile Roibert, Sébastien Feraudet
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Publication number: 20140065421Abstract: An insulated wire includes a conductor, and a polyimide insulation layer formed on an outer periphery of the conductor. The insulation layer includes a polyimide including a repeating unit represented by formula (1) and a repeating unit represented by formula (2). A first acid component in the repeating unit represented by the formula (1) and a second acid component in the repeating unit represented by the formula (2) are mixed in a molar ratio range of 85:15 to 40:60 as expressed by a molar ratio (the first acid component:the second acid component). R as a residue of a diamine component in the formulas (1) and (2) includes a residue of 4,4?-diaminodiphenyl ether and a residue of one selected from a group of diamines represented by the formulas (3) to (8). A storage elastic modulus of the polyimide at 325° C. is not less than 50 MPa.Type: ApplicationFiled: August 28, 2013Publication date: March 6, 2014Inventors: Takami USHIWATA, Yuki HONDA, Shuta NABESHIMA, Hideyuki KIKUCHI
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Publication number: 20140057513Abstract: Embodiments of the invention provide a thread (4, 5) for producing a sheet material (2), having a mesh structure, for an insect screen (1), the thread being composed essentially of a carrier material that is triboelectrically chargeable by an air stream, it is proposed that the thread is provided, in particular completely, with a coating (11) containing a hydrophobic coating material.Type: ApplicationFiled: July 9, 2010Publication date: February 27, 2014Applicants: SAATI Deutschland GmbH, TRITTEC AGInventors: Carsten Bräuer, Rolf Brüggemann, Norbert Gernemann, Rolf Büdding
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Publication number: 20140054062Abstract: An insulating varnish forms an insulating coating film having a shape that corresponds to the shape of an opening of a die, having a uniform thickness. The insulating varnish is applied onto a surface of a conductor, subsequently passes through a die to remove the excess applied insulating varnish, and is then dried or baked to form an insulating coating film on the surface of the conductor. The insulating varnish has a viscosity of 10 Pa·s or more measured by a B-type viscometer at 30° C. The insulating varnish preferably contains no filler, and is preferably a polyimide precursor solution. Since the insulating varnish has a high viscosity, baking and solidification can be performed while maintaining a shape formed when the insulating varnish passes through a die.Type: ApplicationFiled: November 5, 2012Publication date: February 27, 2014Applicants: SUMITOMO ELECTRIC WINTEC, INC., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kengo Yoshida, Masaaki Yamauchi, Masataka Shiwa, Yuji Hatanaka, Junichi Imai, Jun Sugawara, Toru Shimizu, Hideaki Saito, Yuudai Furuya
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Publication number: 20140045983Abstract: Composite reinforcer (R-2) capable of adhering directly to a diene rubber matrix, which can be used as a reinforcing element for a pneumatic tyre, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; covering said thread, individually each thread or collectively several threads, a layer of a thermoplastic polymer composition comprising at least one thermoplastic polymer, the glass transition temperature of which is positive, a poly(p-phenylene ether) (PPE) and a functionalized unsaturated thermoplastic styrene (TPS) elastomer, the glass transition temperature of which is negative, said TPS elastomer bearing functional groups selected from epoxide, carboxyl and acid anhydride or ester groups. Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a pneumatic tyre, incorporating such a composite reinforcer.Type: ApplicationFiled: January 31, 2012Publication date: February 13, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Vincent Abad, Sébastien Rigo, Emmanuel Custodero
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Publication number: 20140045984Abstract: Composite reinforcer (R-2) that is self-adhesive by curing to a diene rubber matrix, which can be used as reinforcing element for a pneumatic tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; covering said thread, individually each thread or collectively several threads, a layer of a thermoplastic polymer composition comprising on the one hand a thermoplastic polymer, the glass transition temperature of which is positive, on the other hand a functionalized unsaturated thermoplastic stirene elastomer, the glass transition temperature of which is negative, said elastomer containing functional groups selected from epoxide, carboxyl and acid anhydride or ester groups. Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a pneumatic tire, incorporating such a composite reinforcer.Type: ApplicationFiled: November 16, 2011Publication date: February 13, 2014Inventors: Vincent Abad, Sébastien Rigo, Emmanuel Custodero
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Publication number: 20140037891Abstract: Disclosed are spray-on anti-soil formulations, and methods for treating fibers, carpets, and fabrics with the same. The anti-soil formulations comprise a synergistic blend of an anti-soil component and a stain blocker component adapted to be sprayed-on a fiber, carpet, or fabric instead of known exhaust applications. The anti-soil component can be either fluorochemical or non-fluorochemical based, while the stain blocker can comprise any chemical that blocks positively charged dye sites. Fibers, carpets, and fabrics treated with the anti-soil formulations exhibit superior anti-soil characteristics compared to sprayed-on fluorochemicals and exhibit similar anti-soil characteristics compared to known exhaust application.Type: ApplicationFiled: November 9, 2011Publication date: February 6, 2014Inventor: Sundar Mohan Rao
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Publication number: 20140008154Abstract: A belt for suspending or driving an elevator car includes a plurality of wires arranged into one or more cords; and a jacket substantially retaining the one or more cords. At least one of the one or more cords includes a plurality of non-load bearing filler filaments interposed between adjacent wires of the plurality of wires. An elevator system includes an elevator car, one or more sheaves, and one or more belts operably connected to the car and interactive with the one or more sheaves for suspending or driving the elevator car. Each belt of the one or more belts includes a plurality of wires arranged into one or more cords and a jacket substantially retaining the one or more cords. At least one of the one or more cords includes a plurality of non-load bearing filler filaments interposed between adjacent wires of the plurality of wires.Type: ApplicationFiled: March 21, 2011Publication date: January 9, 2014Applicant: OTIS ELEVATOR COMPANYInventors: John P. Wesson, Gopal R. Krishnan, Daniel Rush, Vijay Jayachandran
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Publication number: 20130295808Abstract: A composition comprising an inner core of UHMWPE fibres having a molecular weight greater than 500,000 Daltons with a denier of from about 700 to about 3000, preferably from about 1000 to about 2500, more preferably from about 1500 to about 2000, most preferably from about 1500 to about 1800, with an overall thickness of 0.2 to 0.8 mm and a nylon coating.Type: ApplicationFiled: April 8, 2013Publication date: November 7, 2013Inventors: Dariush Firouzi, Daniel Foucher, Habiba Bougherara, Pradeep Agrawal
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Patent number: 8575045Abstract: An article is provided that includes a polymeric fiber that has an excess number of surface active reactive moieties relative to the number of surface reactive moieties found on the fiber in a native state. A particle is bonded covalently to the fiber through an intermediate coupling agent. Multiple particles can be covalently bonded to the fiber, the multiple particles can be bonded uniformly or asymmetrically around the fiber diameter. A process for modifying a fiber includes creating surface activated reactive moieties thereon. The activated fiber is then exposed to a liquid solution containing a coupling agent to form a covalent bond. The coupling agent is also reacted with a particle in a liquid solution to form a covalent bond between the coupling agent and the particle. The coupling agent is covalently bonded to either a particle and then bonded to the fiber, or vice versa.Type: GrantFiled: May 23, 2005Date of Patent: November 5, 2013Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Steven H. McKnight, Robert E. Jensen, Joshua A. Orlicki
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Publication number: 20130289533Abstract: The present invention relates to a medical device. In particular, the present invention concerns a medical device which can be detected by means of magnetic resonance imaging (MRI).Type: ApplicationFiled: October 18, 2011Publication date: October 31, 2013Applicant: MARVIS TECHNOLOGIES GMBHInventors: Klaus Duering, Joachim Georg Pfeffer
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Publication number: 20130273366Abstract: Composite reinforcer (R-2) that is self-adhesive, by curing, to a diene rubber matrix, which can be used as reinforcing element for a pneumatic tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example a polyamide, covering said thread, individually each thread or collectively several threads; a second layer (22) of a composition comprising a poly(p-phenylene ether) (“PPE”) and a functionalized diene elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, in particular an epoxidized SBR, covering the first layer (21). Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a pneumatic tire, incorporating such a composite reinforcer.Type: ApplicationFiled: September 16, 2011Publication date: October 17, 2013Applicants: Michelin Recherche et Technique S.A., Compagnie Generale des Establissements MichelinInventors: Vincent Abad, Sébastien Rigo, Emmanuel Custodero
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Publication number: 20130225721Abstract: The invention relates to a fixed and/or stabilized fiber structure from a fibrous material as well as from an agent for its fixing and stabilizing. The agent for fixing and stabilizing is a statistical copolyester which is formed from the diacid components terepththalic acid and, optionally, isophthalic acid as well as the diol components butanediol, diethylene glycol and triethylene glycol. A method of manufacturing this fiber structure is also provided. The fiber structure is used as a reinforcement material for polymer matrices, in particular epoxy resins. A fiber composite material containing at least one thermosetting resin as well as the fiber structure in accordance with the invention is furthermore provided.Type: ApplicationFiled: February 21, 2013Publication date: August 29, 2013Applicant: EMS-PATENT AGInventor: EMS-Patent AG
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Publication number: 20130177282Abstract: This invention relates to a fiber reinforced plastic material with improved flexibility and high tensile strength for use in optic cables. The strength member composition comprises a polypropylene based thermoplastic resin, a continuous fiber having a modulus greater than 80 PGa, and talc.Type: ApplicationFiled: September 21, 2011Publication date: July 11, 2013Inventors: Buo Chen, Bharat I. Chaudhary, Chester J. Kmiec, Jeffrey M. Cogen
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Publication number: 20130160931Abstract: The present invention is directed to a method of constructing a tire, comprising: constructing a coated filament, the coated filament constructed by coating a filament with a coating material, the coating material comprising at least one diene based elastomer and heat expandable thermoplastic resin particles containing therein a liquid or solid capable of generating a gas upon vaporization, decomposition, or a chemical reaction under heating; encasing the coated filament into containment within an uncured or pre-cured flexible tire component; building a green tire from tire components including the uncured or pre-cured flexible tire component and the encased coated filament; curing the green tire including the flexible tire component containing the coated filament; removing the filament from the cured flexible tire component to leave within the flexible tire component a substantially unobstructed air passageway.Type: ApplicationFiled: November 5, 2012Publication date: June 27, 2013Inventors: Francesco Sportelli, Gaston Emile Jacobs, Etienne Besnoin
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Patent number: 8466251Abstract: A polyamide-imide resin insulating paint according to the present invention includes polyamide-imide resin containing no halogen element in its molecular chain which is dissolved in a polar solvent, in which the polyamide-imide resin contains an aromatic diisocyanate component (A) having three or more benzene rings or an aromatic diamine component (E) having three or more benzene rings in a monomer, and a ratio M/N between a molecular weight (M) of the polyamide-imide resin per repeat unit and an average number (N) of amide groups and imide groups is equal to or more than 200.Type: GrantFiled: June 17, 2008Date of Patent: June 18, 2013Assignee: Hitachi Magnet Wire Corp.Inventors: Hideyuki Kikuchi, Yuzo Yukimori
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Patent number: 8460790Abstract: The present invention provides an aggregate of nanofibers having less spread of single fiber fineness values that can be used in wide applications without limitation to the shape and the kind of the polymer, and a method for manufacturing the same. The present invention is an aggregate of nanofibers made of a thermoplastic polymer having single fiber fineness by number average in a range from 1×10?7 to 2×10?4 dtex and single fibers of 60% or more in fineness ratio have single fiber fineness in a range from 1×10?7 to 2×10?4 dtex.Type: GrantFiled: October 22, 2003Date of Patent: June 11, 2013Assignee: TORAY Industries, Inc.Inventors: Takashi Ochi, Akira Kishiro, Shuichi Nonaka
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Publication number: 20130139340Abstract: A brush fiber and a method for manufacturing the brush fiber are provided. The brush fiber includes a fibrous core portion, a covering portion provided on a surface of the core portion. A leading end portion of the core portion has a tapered shape, and the covering portion is made of conductive material. The conductive material is a sulfide of at least one type of metal selected from the group consisting of Cu, Ag, and Pd.Type: ApplicationFiled: June 22, 2012Publication date: June 6, 2013Applicant: NIHON SANMO DYEING CO., LTD.Inventors: Takeshi Hiramoto, Hiroshi Utsumi
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Publication number: 20130108822Abstract: This invention relates to polyester-based fibrous substrates being surface coated at least partially with a coating composition comprising perfluoropolyethers. Processes of application of the coating compositions are also provided. The polyester-based fibrous substrates after surface coating have improved wear and/or abrasion resistance relative to uncoated fibrous substrates.Type: ApplicationFiled: July 13, 2011Publication date: May 2, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: Tengjiao Hu
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Patent number: 8398906Abstract: The invention pertains to a method for making a polymer-additive composite particle from a dope by jet spinning the dope to obtain a pulp, fibril or fibrid, wherein the solvent of the dope is selected from N-methyl-2-pyrrolidone, N,N?-dimethylformamide, N,N?-dimethylacetamide, tetramethylurea, and 4 to 75 wt % of a composition consisting of 2 to 95 wt % of a para-aramid polymer and 5-98 wt % of a solid additive material, to a total of 100 wt %, and wherein the aramid polymer is dissolved in the solvent; or coagulating the dope by means of a rotor-stator apparatus in which the polymer solution is applied through the stator on the rotor so that the precipitating polymer-additive composite particle is subjected to shear forces while they are in a plastic deformable stage.Type: GrantFiled: March 28, 2008Date of Patent: March 19, 2013Assignee: Teijin Aramid B.V.Inventors: Anton Johannes Josef Hendriks, Mirjam Ellen Oldenzeel, Johannus Maria Bergmans, Tetsuya Akamatsu
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Patent number: 8367194Abstract: It is an object of the present invention to provide round fiber-reinforced plastic strand, a manufacturing method thereof, and a fiber-reinforced sheet which eliminate limitation in forming speed and limit on number of products capable of being manufactured at a time, do not require use of a release agent, eliminate the necessity of operations such as roughing after forming, and thus permit a considerable reduction of the manufacturing cost and a remarkable increase in the product quality.Type: GrantFiled: March 10, 2008Date of Patent: February 5, 2013Assignee: Nippon Steel Composite Co., Ltd.Inventors: Toshikazu Takeda, Masaki Shimada, Hidehiko Hino, Masaki Arazoe
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Publication number: 20130029151Abstract: A synthetic fiber yarn and process for providing same, the yarn comprising a plurality of fibers of inherently flame resistant polymer having a surface finish of perfluorinated alkyl ether oil, wherein the perfluorinated alkyl ether has a molecular weight of from 1000 to 4730 and the yarn has a char length when burned of 6 cm or less.Type: ApplicationFiled: January 31, 2012Publication date: January 31, 2013Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Teresa C. Madeleine, Bhatnagar Chitrangad
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Patent number: 8361618Abstract: A composite configured to release refrigerant therefrom comprises a substrate material comprising polarized fibers of glass, polyamide, phenylene sulfide, carbon or graphite or combinations of two or more thereof having bonded thereon a metal compound comprising a complex compound of a polar gaseous refrigerant and a metal salt and/or a hydrated metal hydroxide and/or a metal hydroxide of a metal comprising alkali metal, alkaline earth metal, transition metal, zinc, cadmium, tin, aluminum, or two or more thereof, at a concentration of at least about 0.Type: GrantFiled: April 30, 2010Date of Patent: January 29, 2013Assignee: Rocky ResearchInventors: Uwe Rockenfeller, Kaveh Khalili
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Patent number: 8357455Abstract: The invention relates to the use of a molding composition which comprises at least 50% by weight of a copolyamide, which is composed of the following monomer combination: a) from 65 to 99 mol % of a substantially equimolar mixture composed of an unbranched aliphatic diamine having from 6 to 18 carbon atoms and of an unbranched aliphatic dicarboxylic acid having from 6 to 18 carbon atoms, ?where the mixture composed of diamine and dicarboxylic acid comprises an average of from 8 to 12 carbon atoms, b) from 1 to 35 mol % of a substantially equimolar mixture composed of a cycloaliphatic diamine having from 8 to 20 carbon atoms and of a dicarboxylic acid having from 6 to 18 carbon atoms, for production of a printable or printed item, such as a ski topcoat.Type: GrantFiled: November 9, 2005Date of Patent: January 22, 2013Assignee: Evonik Degussa GmbHInventors: Franz-Erich Baumann, Roland Wursche, Harald Häger, Sonja Bollmann, Kirsten Alting
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Publication number: 20130014774Abstract: A filter material of a filter element configured for application in a smoking article may include a fibrous substrate material finished with a fiber finish composition. The fiber finish composition may be formulated to selectively interact with at least one target component of mainstream smoke drawn through the filter element during use of the smoking article to selectively filter the target component from the smoke. The filter element may include multiple filter segments. Each filter segment may include a filter material having a finish composition formulated to selectively interact with a different target component. The various filter segments may be combined and/or arranged to selectively filter the mainstream smoke to achieve desired characteristics. Each filter segment may be formed from the same fibrous substrate material.Type: ApplicationFiled: July 14, 2011Publication date: January 17, 2013Inventors: Andries D. Sebastian, Stephen Benson Sears, Anthony Richard Gerardi
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Patent number: 8353344Abstract: Fiber aggregate comprising organic polymeric fibers, wherein the organic polymeric fibers have an average length in a range from 2 to 20 millimeters, an average diameter up to 100 micrometer, and comprise at least 75 percent by solid volume of the fiber aggregate, wherein the fiber aggregate has an unrestrained bulk density of at least 0.05 g/cm3, and wherein at least 85% by volume of the fiber aggregate disassociates to provide dispersed fibers. The fiber aggregates are useful, for example, for flowback control in wellbores and reservoirs.Type: GrantFiled: December 11, 2008Date of Patent: January 15, 2013Assignee: 3M Innovative Properties CompanyInventors: James G. Carlson, Michael R. Berrigan, Michael D. Crandall, Ignatius A. Kadoma, Yong K. Wu
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Patent number: 8338800Abstract: Disclosed are photoluminescent fibers containing photoluminescent phosphorescent materials and photoluminescent fluorescent materials which emit electromagnetic energies to give an emission signature. Also disclosed are the use of the inventive fibers, fabrics made therefrom, and objects containing the fiber.Type: GrantFiled: May 24, 2012Date of Patent: December 25, 2012Assignee: Performance Indicator, LLCInventors: Timothy E. Bortz, Satish Agrawal, James G. Shelnut
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Publication number: 20120308821Abstract: A composite material for water or wastewater treatment is described. The composite material has a buoyant substrate, an adsorbant for adsorbing organic compounds, a photocatalyst for degrading organic compounds, and an enhancer for facilitating mass transfer between the adsorbent and the photocatalyst, increasing the selectivity of the composite material, or for proving the photocatalytic efficiency is described. The adsorbent, photocatalyst, and enhancer are immobilized on the substrate.Type: ApplicationFiled: January 28, 2011Publication date: December 6, 2012Inventors: Renbi Bai, Hui Han
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Publication number: 20120301719Abstract: A strand is coated with a powdered material by first applying a layer of hot polymer resin to the strand, and spraying the powdered material onto the resin-coated strand from at least three nozzles disposed along the processing path and spaced radially therearound. The spray apparatus is disposed within nested containers so as to limit the escape of overspray powder. The powder-coated strand may be heat-set to increase the adhesion of the powder.Type: ApplicationFiled: July 5, 2012Publication date: November 29, 2012Inventors: Willorage Rathna Perera, Gerald J. Mauretti
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Patent number: 8283003Abstract: Artificial turf has a base layer, a multiplicity of blades fixed in and projecting upward from the base layer, and a mass of damping material on the base layer and through which the blades project. Each of the blades is at least partially formed of a polyester of terephthalic acid made from waste. The polyester is polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), both from waste. The base layer is a flat primary layer, preferably a textile and preferably consists of plastic, a polyolefin and/or a polyester of terephthalic acid, preferably a polyester of terephthalic acid from waste.Type: GrantFiled: September 9, 2009Date of Patent: October 9, 2012Assignee: Motech GmbH Technology & SystemsInventor: Juergen Morton-Finger
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Publication number: 20120251823Abstract: The invention provides a tow prepreg having improved productivity and performance. In various embodiments, the tow prepreg has 90% or more resin impregnation and a FAW greater than 600 g/m2. A method of making the prepreg by impregnating each continuous reinforcement fiber strand with a thermosetting resin is also disclosed. In various embodiments, the resin is applied to the reinforcement fiber while flattening the fiber between heated rollers positioned in parallel to each other.Type: ApplicationFiled: April 4, 2012Publication date: October 4, 2012Applicant: NEWPORT ADHESIVES AND COMPOSITES, INC.Inventors: Freddy Maldonado, Jesus Fernandez-Marquez, Atsushi Nohara, Paul Kyle
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Publication number: 20120202059Abstract: A dry type electrical insulation is provided. The insulation includes a base fiber having an outer surface and a first melting point and a binder material, coated onto the outer surface of the base fiber, having a second melting point. In this insulation, the second melting point is lower than the first melting point. A dry type insulation matrix is also provided. The insulation matrix includes a plurality of composite fibers having a base fiber having a first melting point and a binder material co-extruded therewith, having a second melting point. In this insulation matrix, the second melting point is lower than the first.Type: ApplicationFiled: June 9, 2011Publication date: August 9, 2012Applicant: WAUKESHA ELECTRIC SYSTEMS, INC.Inventors: Thomas M. GOLNER, Shirish P. MEHTA, H. Jin SIM
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Patent number: 8231968Abstract: The present invention provides to a method of producing fiber from tourmaline anion fiber; of which, polypropylene or polyethylene chip, TPE and submicrometer tourmaline particle are prepared and then rolled into submicrometer tourmaline agglomerate through granulation by double screw; then, take submicrometer tourmaline agglomerate and polypropylene or polyethylene chip, of which the content of tourmaline agglomerate accounts for 1˜10% of gross weight, and TPE for 1˜40% of gross weight; tourmaline agglomerate and polypropylene or polyethylene are melted into composite fiber or filter material via spinning, such that the fiber or filter material can yield anion and present outstanding gas permeability and mechanical property.Type: GrantFiled: May 3, 2006Date of Patent: July 31, 2012Assignee: Noveko Trading 2008 LLCInventors: Ming-Fung Lin, Hung-Jen Chen, Chia-Jen Chen, Yung-Chien Chen, Chao-Mulan Chen
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Patent number: 8206808Abstract: A prepreg composite material that includes a fiber layer and a resin comprising a thermoset resin component, a curing agent and a fibrous micropulp. The micropulp component is an aramid fiber having a volume average length of from 0.01 to 100 micrometers. The prepreg is useful in composite panel construction for minimizing fluid permeation into the cured structure. This prepreg is particularly suitable for making honeycomb sandwich panels. Film adhesives, liquid and paste resins containing aramid fiber micropulp are also disclosed.Type: GrantFiled: June 2, 2011Date of Patent: June 26, 2012Assignee: E. I. du Pont de Nemours and CompanyInventors: Subhotosh Khan, Halvar Young Loken
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Patent number: 8182915Abstract: A method is provided for spinning a multifilament thread from a thermoplastic material, including the steps of extruding the melted material through a spinneret with a plurality of spinneret holes into a filament bundle with a plurality of filaments, winding the filaments as thread after solidifying, and cooling the filament bundle beneath the spinneret, whereby in a first cooling zone the gaseous cooling medium is directed in such a way that it flows through the filament bundle transversely, the cooling medium leaving the filament bundle practically completely on the side opposite the inflow side, and in a second cooling zone beneath the first cooling zone, the filament bundle being cooled further essentially through self-suction of the gaseous cooling medium surrounding the filament bundle.Type: GrantFiled: March 26, 2010Date of Patent: May 22, 2012Assignee: Diolen Industrial Fibers B.V.Inventors: Hendrik Middeljans, Eric Heuveling, Bastiaan Krins, Johannes Frederick Boer
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Patent number: 8173256Abstract: An aromatic polyamide fiber comprising an aromatic polyamide containing a structural repeating unit of the following formula (1), and a structural repeating unit of the following repeating unit (2) in an amount of 30 mol % or more to the whole amount of the aromatic polyamide structural units, the fiber having strength of 20 cN/dtex or more and modulus of elongation of 500 cN/dtex or more: wherein Ar1 and Ar2 each independently represent an unsubstituted or substituted divalent aromatic group.Type: GrantFiled: July 26, 2006Date of Patent: May 8, 2012Assignee: Teijin Techno Products LimitedInventors: Yasuhiro Marumoto, Shigeru Ishihara
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Patent number: 8163071Abstract: Disclosed is a hollow fiber that includes a hollow positioned at the center of the hollow fiber, macropores positioned at adjacent to the hollow, and mesopores and picopores positioned at adjacent to macropores, and the picopores are three dimensionally connected to each other to form a three dimensional network structure. The hollow fiber includes a polymer derived from polyamic acid, and the polyamic acid includes a repeating unit obtained from aromatic diamine including at least one ortho-positioned functional group with respect to an amine group and dianhydride.Type: GrantFiled: May 19, 2009Date of Patent: April 24, 2012Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Young Moo Lee, Ho Bum Park, Sang Hoon Han, Chul Ho Jung
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Patent number: 8153252Abstract: The present invention relates to an industrial high tenacity polyester fiber with superior creep properties and a method of preparing the same, and more particularly to an industrial polyester fiber having a mono-filament fineness of 5 to 15 dpf, an intrinsic viscosity of 0.8 to 1.25 dl/g, and a creep change rate of 4.7% or less, wherein the creep change rate is measured at 160° C. for 24 hours while giving a load corresponding to a strain of 3% after heat-treating the fiber at 220° C. for 2 minutes while giving a load of 1 g/d, and the load corresponding to the strain of 3% is based on a value obtained from a load-strain curve of the fiber before heat-treatment, and a method of preparing the same.Type: GrantFiled: November 10, 2008Date of Patent: April 10, 2012Assignee: Kolon Industries, IncInventor: Young-Soo Lee
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Patent number: 8147956Abstract: To obtain an ultrafine heat-shrinkable conjugate fiber at high productivity, in which a flow-drawing state of a polyester undrawn yarn is realized easily and stably. By drawing undrawn yarn comprising a conjugated polyester polymer and olefin polymer, a flow-drawing process can be easily and stably realized using conventional production facilities; and the heat-shrinkable fiber, a drawn intermediate, and an ultrafine hot-melt adhesive conjugate fiber produced by redrawing the drawn intermediate of the present invention can be obtained with high productivity and excellent runnability. More specifically, the ultrafine hot-melt adhesive conjugate fiber obtained by redrawing can be drawn at a heretofore unseen high drawing magnification, and the fiber structure of the olefin polymer constituting part of the conjugate fiber is markedly developed.Type: GrantFiled: October 20, 2008Date of Patent: April 3, 2012Assignees: ES Fiber Visions Co., Ltd., ES Fiber Visions Hong Kong Limited, ES Fiber Visions LP, ES Fiber Visons APSInventors: Minoru Miyauchi, Tadashi Ideguchi, Masashi Teranaka
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Patent number: 8124167Abstract: A medical device such as a wire guide has a lubricious and/or therapeutic coating adhered to an etched, carbonaceous polymeric surface, for example a sodium-etched polymer surface. A method for preparing a lubricious and/or therapeutic coating on a medical device includes etching a polymeric portion of the device to create a carbonaceous surface and applying a lubricious and/or therapeutic coating on the etched surface.Type: GrantFiled: March 26, 2010Date of Patent: February 28, 2012Assignee: Cook Medical Technologies LLCInventors: Tamisha Clark, Barry H. Chilton
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Publication number: 20120021218Abstract: In various embodiments, the present application provides electrically conductive metal-plated fibers and continuous processes of preparing metal-plated fibers. Additionally, provided are polymeric articles comprising the provided metal-plated fibers or other fibers prepared by the provided process, said articles having electromagnetic interference shielding effectiveness.Type: ApplicationFiled: July 21, 2011Publication date: January 26, 2012Applicant: SYSCOM ADVANCED MATERIALS, INC.Inventors: Jar-Wha Lee, Ching Chang
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Patent number: 8084571Abstract: 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: May 21, 2009Date of Patent: December 27, 2011Assignee: 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: 8083771Abstract: The present disclosure relates to compositions comprising a copolymer that includes a first monomer and a second monomer that is different from the first monomer, wherein both the first and second monomer are selected from the group consisting of 3-sulfopropyl acrylate potassium salt, sodium acrylate, N-(tris(hydroxyl methyl)methyl)acrylamide, and 2-acrylamideo-2-methyl-1-propane sulfonic acid. The present disclosure further relates to methods for preparing the copolymer compositions and shaped articles comprising the copolymers.Type: GrantFiled: March 23, 2011Date of Patent: December 27, 2011Assignee: Tyco Healthcare Group LPInventors: Ahmad R. Hadba, Brian Cuevas, Frank R. Schiretz, Joshua B. Stopek
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Patent number: 8080314Abstract: Methods and articles providing for precise aligning, positioning, shaping, and linking of nanotubes and carbon nanotubes. An article comprising: a solid surface comprising at least two different surface regions including: a first surface region which comprises an outer boundary and which is adapted for carbon nanotube adsorption, and a second surface region which is adapted for preventing carbon nanotube adsorption, the second region forming an interface with the outer boundary of the first region, at least one carbon nanotube which is at least partially selectively adsorbed at the interface. The shape and size of the patterns on the surface and the length of the carbon nanotube can be controlled to provide for selective interfacial adsorption.Type: GrantFiled: May 6, 2011Date of Patent: December 20, 2011Assignee: Northwestern UniversityInventors: Chad A. Mirkin, Yuhuang Wang, Daniel Maspoch
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Publication number: 20110253791Abstract: A polymeric thread includes a transparent polymeric substrate; a first patterned layer with a miniature pattern disposed at a side of the polymeric substrate; and a first florescent layer containing a florescent taggant disposed at a side of the patterned layer that is facing away from the polymeric substrate. An authentication tag utilizing the polymeric thread and a method for making the polymeric thread are also provided.Type: ApplicationFiled: August 17, 2010Publication date: October 20, 2011Inventor: Shu Tuen TANG
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Patent number: 8025970Abstract: A fishing line is produced by forming a monofilament by subjecting a resin composition (C) containing 90 to 99.3% by weight of a polyamide resin (A) and 0.7 to 10% by weight of a silicone compound (B) having a number average molecular weight of 100,000 to 2,000,000 to melt-spinning and then drawing. This method can provide a fishing line which is excellent in abrasion resistance and also excellent in visibility. In this method, it is preferable to conduct melt-kneading of a part of the polyamide resin (A) with the silicone compound (B) in advance, adding of the residual polyamide resin (A) and further melt-kneading, subsequent melt-spinning, and drawing at a draw ratio of from 4 to 7.Type: GrantFiled: October 24, 2005Date of Patent: September 27, 2011Assignee: Sunline Co., Ltd.Inventors: Junji Nakazaki, Manabu Hamamoto, Hidenobu Tsutsumi, Toshiaki Ihara, Ichiro Ono, Yoshio Fujiwara
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Patent number: 8021584Abstract: Blending of thermoplastic polyester with fiber-forming polyamide in the production of melt-colored melt-spun fibers results in improved color strength and aesthetics, and dimensional stability.Type: GrantFiled: January 23, 2004Date of Patent: September 20, 2011Assignee: Universal Fibers, Inc.Inventors: Matthew B. Studholme, Arthur Roth, Jr., Brendan Francis McSheehy, Jr.
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Patent number: 8017662Abstract: A process for producing a synthetic fiber composition with reclaimed post consumer carpet yarn, wherein face yarn is shaved from post consumer carpet using a shaving device to provide shaved face yarn, the shaved face yarn is reduced in size, contaminants are removed using mechanical screeners, the shave face yarn is melt filtered, and then fiber spun.Type: GrantFiled: May 29, 2008Date of Patent: September 13, 2011Assignee: Universal Fibers, Inc.Inventors: George Taylor Hoover, Jr., Milton Keith Roark, Brendan Francis McSheehy, Jr., Matthew Benjamin Studholme
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Patent number: 8007904Abstract: A multicomponent fiber having a metal phobic component and a metal philic component that allows for the selective distribution of metal across the surface of the fiber is disclosed. The inventive multicomponent fibers may be used in fabrics and other products manufactured therefrom for economically imparting at least one of an antistatic quality, antimicrobial and antifungal efficacy, and ultraviolet and/or electromagnetic radiation shielding.Type: GrantFiled: January 12, 2009Date of Patent: August 30, 2011Assignee: Fiber Innovation Technology, Inc.Inventor: Jeffrey S. Dugan
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Patent number: RE43880Abstract: This invention relates to the composition and a solvent-free process for preparing novel imide oligomers and polymers specifically formulated with effective amounts of a dianhydride such as 2,3,3?,4-biphenyltetra carboxylic dianydride (a-BPDA), at least one aromatic diamine and an endcapped of 4-phenylethynylphthalic anhydride (PEPA) or nadic anhydride to produce imide oligomers that possess a low-melt viscosity of 1-60 poise at 260-280° C. When the imide oligomer melt is cured at about 371° C. in a press or autoclave under 100-500 psi, the melt resulted in a thermoset polyimide having a glass transition temperature (Tg) equal to and above 310° C. A novel feature of this process is that the monomers; namely the dianhydrides, diamines and the endcaps, are melt processable to form imide oligomers at temperatures ranging between 232-280° C. (450-535° F.) without any solvent.Type: GrantFiled: May 8, 2006Date of Patent: December 25, 2012Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space AdministrationInventor: Chun-Hua Chuang