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Rod, strand, filament or fiber

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428 - Stock material or miscellaneous articles


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Class / Patent application numberDescriptionNumber of patent applications / Date published
428375000 Coated or with bond, impregnation or core 261
428401000 Physical dimension 122
428367000 Including free carbon or carbide or therewith (not as steel) 114
428373000 Bicomponent, conjugate, composite or collateral fibers or filaments (i.e., coextruded sheath-core or side-by-side type) 73
428397000 Particular cross section 51
428372000 Including structurally defined particulate matter 26
428369000 Nonlinear (e.g., crimped, coiled, etc.) 25
428365000 Including textile, cloth or fabric 22
428366000 Including boron or compound thereof (not as steel) 3
20130045382LIGHTWEIGHT X-RAY AND GAMMA RADIATION SHIELDING FIBERS AND COMPOSITIONS - Described are improved x-ray and gamma ray radiation protective compositions, fibers, and clothing. Also described are methods for producing lightweight, radiation-shielding, protective textiles for protecting the human body and/or methods of producing radiation-shielding coating materials that can be used for coating textiles.02-21-2013
20100304136Product - Composite materials comprise nanotubes and a polymer. The nanotubes and polymer interact in an ordered fashion at an interfacial region. The interface is crystalline or semi crystalline.12-02-2010
20090068461CARBON NANOTUBES ON CARBON NANOFIBER SUBSTRATE - A hierarchical structure that has at least one carbon nanotube extending radially from a nanofiber substrate and related methods of use and manufacture.03-12-2009
20090123748Process for the production of high tensile strength and low creep polymer yarns, high tensile strength and low creep polymer or copolymer yarns, and, the use of such yarns - The present invention relates to a process for the production of high tensile strength and low creep polymer yarns, wherein it comprises the following steps: (a) preparing a mixture of: (i) a first ultra high molecular weight polyolefin polymer or copolymer, (ii) a second clay nanocomposite polyolefin polymer or copolymer, and (iii) a non-polar spinning solvent, (b) feeding the resulting suspension through an extruder at a temperature of at least 180° C., causing the formation of a gel, (c) spinning the gel so obtained in a spinneret with a length to diameter ratio (L/D) of at least 15, (d) cooling the yarn to a temperature below 2° C., (e) subsequently removing the non-polar spinning solvent, and (f) drawing the yarn so obtained so as to obtain a tensile strength value of at least 18 cN/Dtex and a creep value lower than 0.07% per hour, wherein the first ultra high molecular weight polyolefin polymer or copolymer has a weight-average molecular weight higher than 2,000,000 g/mol and a polydispersivity of at least 7, and the second clay nanocomposite polyolefin polymer or copolymer is obtained via in situ polymerization of an olefin and an exfoliated layered clay, the polyolefin so obtained having a weight-average molecular weight of at least 400,000 g/mol.05-14-2009
20090269581HIGH STRENGTH POLYETHYLENE FIBER AND METHOD FOR PRODUCING THE SAME - A polyethylene fiber having high strength and extremely high productivity is difficult to obtain by conventional gel spinning methods. This high strength polyethylene fiber includes an ultrahigh molecular weight polyethylene resin having an intrinsic viscosity of 8 dL/g or more and contains a poor solvent in an amount of 10 ppm or more with respect to the resin. This high strength polyethylene fiber may also contain an ultrahigh molecular weight polyethylene resin having an intrinsic viscosity of 8 dL/g or more in which the resin contains a non-solvent in which the resin is insoluble in an amount of 10 ppm or more.10-29-2009
20120225290ARTICLES CONTAINING PRECISELY BRANCHED FUNCTIONAL POLYMERIC PHASE CHANGE MATERIALS - In accordance with one aspect a temperature regulating article comprises a substrate and a polymeric phase change material bound to the substrate, wherein the polymeric phase change material is characterized by including a precisely branched polymer with substantially equally spaced repeating sidechains. In other embodiments the polymeric phase change material includes between 20 and 200 branches per 1000 carbon units, has a latent heat of at least 5 Joules per gram, and a transition temperature between 0° C. and 40° C.09-06-2012
20100075142IR REFLECTIVE ELEMENTS MADE OF IMPACT-RESISTANCE PLASTIC, AND A PROCESS FOR THEIR PRODUCTION - A process for the production of a translucent, IR-reflective plastic element, consisting entirely or at least in part of an impact-resistant, thermoplastic plastic, containing IR-reflective particles made of a lamellar-shaped carrier pigments coated with a metal oxide and the plastic element made therefrom.03-25-2010
20110300379METHOD FOR PRODUCING A FILAMENT YARN FROM AN AROMATIC POLYAMIDE - A method for producing a filament yarn from a para-aromatic polyamide, having an optically anisotropic aramid spinning solution filtered within a spinneret arrangement by using a filter having passage openings and extruded within the spinneret arrangement through a plurality of spinning orifices. The extruded anisotropic aramid spinning solution is guided via an air gap, stretched in the process, and collected in an aqueous coagulation bath. The optically anisotropic aramid spinning solution in the spinneret arrangement is fed to the spinning orifices via a flow resistor. The flow resistor is arranged closer to the spinning orifices than the filter, and the flow resistor and the filter are arranged at a distance to one another. The method may also include a para-aromatic polyamide filament yarn.12-08-2011
20090092830High linear density, high modulus, high tenacity yarns and methods for making the yarns - The present invention relates to a yarn, comprising (a) a plurality of fibers having an orientation angle of no more than 8.0 degrees and made of a para-aramid having an inherent viscosity of 5.2 to 6.2 dl/g, (b) a linear density of at least 2666 dtex (2400 denier), (c) a modulus of at least 810 grams per dtex (900 grams per denier), and (d) a tenacity of at least 18 grams per dtex (20 grams per denier). The invention further relates to methods of making such yarn.04-09-2009
20110300378DISCONTINUOUS SHORT FIBER PREFORM AND FIBER-REINFORCED ALUMINUM BILLET AND METHODS OF MANUFACTURING THE SAME - Discontinuous fiber preforms, fiber-reinforced metal matrix composites, and methods of making same are disclosed. A fiber preform includes a milled fiber material having a weighted average fiber length of about 0.03 mm to 0.12 mm and/or a percent fiber volume fraction of the fiber preform of about 15% to about 55%. The milled fiber material is at least substantially free of a binder material. A fiber-reinforced MMC includes a milled fiber material having a weighted-average fiber length of about 0.03 mm to 0.12 mm and/or a percent fiber volume fraction of the fiber preform of about 15% to about 55%. The fiber-reinforced MMC further includes a metal infiltrated into the milled fiber material. The milled fiber material is at least substantially free of a binder material. The milled fiber can be substantially uniformly oriented and/or randomly oriented in the fiber preform and/or the fiber-reinforced MMC.12-08-2011
20120015184AMORPHOUS POLYETHERIMIDE FIBER AND HEAT-RESISTANT FABRIC - Provided are an amorphous polyetherimide fiber having not only a small single fiber fineness suitable for producing fabrics, and a fabric comprising the amorphous polyetherimide fiber. The fiber comprises an amorphous polyetherimide polymer having a molecular weight distribution (Mw/Mn) of less than 2.5, and having a shrinkage percentage under dry heat at 200° C. of 5% or less, and a single fiber fineness of 3.0 dtex or less. The fiber may have a tenacity at room temperature of 2.0 cN/dtex or greater.01-19-2012
20100119822CARBON NANOTUBE COPOLYMERS AND COMPOSITIONS AND METHODS OF USING THE SAME - New carbon nanotube polymers and compositions are provided. The polymers comprise recurring blocks or units of carbon nanotubes and a compound other than a carbon nanotube. The compound is a polymeric or oligomeric block and is bonded to the carbon nanotube outer sidewall rather than to the carbon nanotube end, and is preferably a block copolymer of the compound and the carbon nanotube. The polymers can be used to prepare compositions that can be formed into products that are useful for building components present in airplanes.05-13-2010
20100098945Polyethylene terephthalate filament having high tenacity for industrial use - A polyethylene terephthalate monofilament obtained by spinning a polyethylene terephthalate chip having an intrinsic viscosity of 0.8 to 1.3, which gives a stress-strain curve exhibiting an elongation of less than 2.5% at an initial stress of 2.0 g/d, with an initial modulus value of 80 to 160 g/d, an elongation of 7.5% or less in a stress range of from 2.0 g/d to 9.0 g/d, and an elongation of at least 2.0% or more in a stress range of from 10.0 g/d to the point of break, is provided.04-22-2010
20090291302Method for producing nanometer-size wires and nanometer-size wire - The present invention provides a nanowire production method that is simpler than conventional nanowire production methods, and that makes it easier to control the size and shape of the nanowires by using a technique completely different from the conventional ones. A powder particle containing a metal element is divided into nanometer-size wires containing the metal element by irradiating a suspension of the powder particles with a femtosecond laser. The present invention also makes it possible to divide the nanometer-size wires thus formed into nanometer-size particles containing the metal element by irradiating further the nanometer-size wires with the femtosecond laser.11-26-2009
20110268967PROCESS AND PRODUCT OF HIGH STRENGTH UHMW PE FIBERS - An improved process for solution spinning of ultra-high molecular weight polyethylene (UHMW PE) filaments, wherein the 10 wt % solution of the UHMW PE in mineral oil at 250° C. has a Cogswell extensional viscosity and a shear viscosity within select ranges.11-03-2011
20090246519Biosynthesis of Metalloid Containing Nanoparticles by Aerobic Microbes - Isolated tellurite-resistant or selenite-resistant marine organisms capable of precipitating tellurium or selenium when grown aerobically are described. A method for using these isolated organisms to produce an aqueous suspension of purified nanoparticles comprising tellurium or selenium and the nanoparticles comprising tellurium or selenium produced by this method are also described. The nanoparticles may further comprise cadmium or zinc. A method of remediation utilizing the described organisms is also presented.10-01-2009
20090047515Method for producing polyethersulfone fiber - The present invention provides a method for producing a polyethersulfone fiber, the method comprising the steps of discharging an electrically charged solution comprising a polyethersulfone and a solvent from a container; and drawing the charged solution by electrical attraction in an electrical field generated between the solution and an electrically charged collecting means having the opposite charge of the solution, while evaporating at least a portion of the solvent to form a polyethersulfone fiber. The fiber obtained in the present invention has a small average fiber diameter and can be made into a thin fiber cloth.02-19-2009
20130130028METHOD FOR PREPARING CARBON FIBER PRECURSOR - Disclosed is a method for preparing a precursor fiber for a carbon fiber. The precursor fiber of fine denier according to the present invention is used to prepare a carbon fiber having excellent tensile strength and compressive strength by a conventional single component spinneret using a superdrawing process to prepare a high strength and high elastic carbon fiber with a reduction in stabilization time.05-23-2013
20130130029SUPER-HIGH-MOLECULAR-WEIGHT POLYOLEFIN YARN, METHOD FOR PRODUCING SAME, AND DRAWING DEVICE - An ultrahigh molecular weight polyolefin yarn of the present invention has been drawn and has a melting point that is determined as a maximum peak temperature measured by a differential scanning calorimeter (DSC) at a temperature rise rate of 20° C./min, and the melting point is higher than a melting point of the yarn before drawing. In a production method of the present invention, a drawing bath (05-23-2013
20090258227METHOD OF PRODUCING CELLULOSE CARBAMATE FIBRE AND USE OF THE SAME - The invention relates to a cellulose carbamate spinning solution, cellulose fibres and a method for the production thereof in which a solution of cellulose carbamate in an ionic liquid is pressed through the holes of a spinning nozzle. The shaped fibres are stretched in air and the cellulose carbamate is regenerated in an aqueous bath. Solvent is removed by washing and the fibre is subsequently dried.10-15-2009
20090214862Solution spinning process for the production of a textile fiber material with a permanent repellent action - A solution spinning process for the production of a textile fiber with permanent repellent action includes the steps of preparing a spinnable polymer component and an ambivalent polymer compound which contains a repelling group and a residual group with an affinity for the spinnable polymer component, mixing the ambivalent polymer compound with the spinnable polymer component in a solvent, and spinning the mixture into a fiber, wherein the repelling groups orient themselves in the direction of the surface of the forming fiber and migrate to the surface, while the affine residual groups anchor the ambivalent polymer compound in the spinnable polymer compound as the solvent is driven off.08-27-2009
20110256398Production Of Non-Woven Materials From Polyhydroxyalkanoate - Methods and compositions for making non-woven materials from polyhydroxyalkanoate polymers are provided. In certain aspects, the invention pertains to an extruded fiber comprising a polyhydroxyalkanoate polymer, a wet milled nucleating agent and a plasticizer, wherein the average particle size of the wet-milled nucleating agent is about 20 microns and is dispersed in the polymer.10-20-2011
20110256397METHOD FOR ATTACHING NANOFIBER SHEET - A method of attaching a nanofiber sheet (10-20-2011
20110177332Nanofiber-nanowire composite and fabrication method thereof - Example embodiments are directed to a nanofiber-nanowire composite includes a polymer nanofiber; and a plurality of nanowires of a metal oxide extending from inside to outside of the polymer nanofiber and covering the polymer nanofiber. According to example embodiments, a method of fabricating a nanofiber-nanowire composite includes forming a nanofiber including a metal seed; and growing nanowires of a metal oxide from the metal seed to the outside of the nanofiber.07-21-2011
20120148838METHOD FOR CONNECTING REINFORCING FIBER BUNDLES, METHOD FOR PRODUCING LONG FIBER REINFORCED THERMOPLASTIC RESIN PELLET, AND WOUND BODY - A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to not less than 0 wt % and not more than 4 wt %, and the reinforcing fiber bundles are connected after the preparation step. It is thus possible for the reinforcing fiber bundle at the time of producing a long fiber reinforced thermoplastic resin pellet that is a material for the pellet to have a required connection strength, and to avoid the occurrence of interruption due to breakage, and accordingly allowing improvement in the production efficiency of the long fiber reinforced thermoplastic resin pellet, etc.06-14-2012
20110305902High Strength Constant Compression Elastic Fibers And Fabrics Thereof - The present invention relates to high strength fabrics made thereof from thin gauge constant compression elastic fibers. Elastic fibers are disclosed which have a relatively flat modulus curve, for example between 100% and 200% elongation. Garments made with the constant compression elastic fibers have a more comfortable feel to the wearer. The garments are also resistant to puncture due to the high strength fabric made with the elastic fibers.12-15-2011
20120009418POLY(TRIMETHYLENE ARYLATE) FIBERS, PROCESS FOR PREPARING, AND FABRIC PREPARED THEREFROM - A fine denier poly(trimethylene arylate) spun drawn fiber is characterized by high denier uniformity. A process for preparing uniform fine denier yarns at spinning speeds of 4000 to 6000 m/min is further disclosed. The poly(trimethylene arylate) fiber hereof comprises 0.1 to 3% by weight of polystyrene dispersed therewithin. Fabrics prepared therefrom are also disclosed.01-12-2012
20100196706Method of Manufacturing Wholly Aromatic Polyamide Filament and Wholly Aromatic Polyamide Filament Manufactured Thereby - Disclosed are a method of manufacturing wholly aromatic polyamid filaments and wholly aromatic polyamid filaments produced by the same. The process includes control of a timing for introducing wholly aromatic polyamid polymer into an extruder for preparation of a spinning dope based on particle size and/or inherent viscosity (IV) of the polyamid polymer.08-05-2010
20120015185FLAMEPROOF RAYON FIBER, METHOD FOR MANUFACTURING THE SAME AND FLAMEPROOF FIBER STRUCTURE - A flameproof rayon fiber having excellent flameproofness as well as excellent flame retardance, a method for manufacturing the same, and a flameproof fiber structure are provided. The flameproof rayon fiber according to the present invention includes components of silicon and sodium. Glass remains when the fiber is burned at 800° C., the glass component has a property of softening at 800° C., and when subjected to an X-ray fluorescence analysis, the rayon fiber has a silicon content in the range of 5 to 30% by mass and a sodium content in the range of 0.1 to 3% by mass. The flameproof rayon fiber according to the present invention can be manufactured by preparing an undiluted viscose solution; adding a solution containing a silicate compound containing an alkali metal to the undiluted viscose solution so as to make an alkali metal-containing silicate compound-added viscose solution; performing spurning by extruding the alkali metal-containing silicate compound-added viscose solution through a spinneret into a spinbath containing sulfuric acid, thus producing a fiber to be treated containing the silicate compound; and treating, in a scouring or aftertreatment process, the fiber to be treated with a solution having a pH in the range of 4 to 11 and a buffer action and containing sodium. A flameproof fiber structure of the present invention contains at least 30% by mass of the flameproof rayon fiber.01-19-2012
20120058337CARBON FIBER AND METHOD FOR PRODUCING THE SAME - An object of the present invention is to provide a pitch carbon fiber having a decreased occurrence of cracking along the direction of the fiber axis of the pitch carbon fiber, which has conventionally occurred in a melt blowing method, and having high thermal conductivity.03-08-2012
20120164447Liquid Crystal Polyester Porous Film - An object of the present invention is to provide a porous membrane having excellent heat resistance and acid resistance. A porous membrane is constituted by a liquid crystal polyester and a polymer other than the liquid crystal polyester. A liquid crystal polyester having a reduced viscosity of 0.40 dL/g or more is used as the liquid crystal polyester. A polymer having a reduced viscosity of 0.40 dL/g or more is used as the polymer other than the liquid crystal polyester. The content of the polymer other than the liquid crystal polyester is adjusted from 10 to 40 parts by mass based on 100 parts by mass of the liquid crystal polyester.06-28-2012
20110003148PROCESS FOR PRODUCING CELLULOSE MULTI-FILAMENT WITH LOWER COEFFICIENT OF VARIATION OF SECTION DIAMETER - The present invention relates to a cellulose fiber having a highly homogeneous section, particularly to a cellulose fiber with lower Coefficient of Variation of section diameter (CV(%)). Specifically, the present invention relates to a cellulose fiber wherein Coefficient of Variation of section diameter (CV(%)) of a mono-filament constituting a multi-filament prepared by dissolving a cellulose powder in liquid N-methylmorpholine N-oxide (hereinafter referred to “NMMO”) is below 2.5. According to the present invention, a lyocell multi-filament is produced comprising the steps of (i) preparing a spinning solution by homogeneously dispersing, swelling and dissolving cellulose powder in a NMMO solution; (ii) spinning the spinning solution into an air gap through a spinning nozzle; and (iii) coagulating the extruded-spun spinning solution in a coagulation bath. In particular, the coagulating step is adjusted by means of a coagulation coefficient in the range of 0.8 to 1.3 and the coagulation coefficient is expressed as T01-06-2011
20120263951ELECTRICALLY CONDUCTING NANOCOMPOSITE WIRE COMPRISING TOW OF MULTIWALLED CARBON NANOTUBES AND TRANSVERSE METAL BRIDGES - Nanocomposite wires having conductivities higher than for metal wires were prepared by pulling tows from a supported array of multiwalled carbon nanotubes and sputter depositing metal on the tows, which resulted in transverse bridges between adjacent nanotubes in the tows. These transverse bridges of metal attached adjacent nanotubes to each other and provided paths for electricity to flow from one nanotube to another.10-18-2012
20110039100Method for Making a 3D Nanostructure Having a Nanosubstructure, and an Insulating Pyramid Having a Metallic Tip, a Pyramid Having Nano-Apertures and Horizontal and/or Vertical Nanowires Obtainable by this Method - Abstract: The invention relates to a method for making a 3D nanostructure having a nanosubstructure, comprising the steps of: i) providing a mold comprising at least one sharp concave corner; ii) conformational depositing at least one structural material in the sharp concave corner; iii) isotropically removing structural material; iv) depositing at least one other structural material; v) removing earlier deposited structural material; vi) forming a nanosubstructure; and vii) removing the mold thereby providing the 3D nanostructure having the nanosubstructure.02-17-2011
20080233395Flame Retardant Artificial Polyester Hair - Artificial polyester hair, which retains fiber physical properties of general polyester fibers such as heat resistance and a degree of strength and elongation, are excellent in the setting property, transparency and touch feeling, and has excellent flame retardancy, is provided. The flame retardant artificial polyester hair, which retains fiber properties such as heat resistance and a degree of strength and elongation and is excellent in suitability for setting, transparency and touch feeling, is characterized by being obtained by melt-spinning a composition obtained by melt-kneading a polyester together with a bromine-containing flame retardant, the bromine-containing flame retardant having a melting point of 160 to 320° C. and a 5% loss on heat temperature of 220 to 450° C. or the bromine-containing flame retardant being a mixture of a bromine-containing flame retardant (b1) having a 5% loss on heat temperature of 220 to 310° C. and a bromine-containing flame retardant (b2) having a having 5% loss on heat temperature of at least 310° C.09-25-2008
20130171450CORDS MADE OF CELLULOSIC MULTIFILAMENT YARNS HAVING AN INCREASED LINEAR DENSITY OF INDIVIDUAL FILAMENTS - A cord, in particular for reinforcing tyres, containing a cellulosic multifilament yarn is disclosed, where the cellulosic multifilament yarn has a strength of at least 35 cN/tex and the individual filaments of the multifilament yarn have a linear density of at least 2.3 dtex. In use, such cords exhibit a significantly improved fatigue behaviour—i.e., a significantly higher fatigue resistance—than standard cords with an individual-filament linear density between 1 and 2 dtex.07-04-2013
20100086779SPLITTABLE CONJUGATE FIBER INCLUDING POLYACETAL, AND FIBROUS FORM AND PRODUCT EACH OBTAINED FROM THE SAME - The invention provides a splittable conjugate fiber excellent in splittability and chemical resistance. The invention also provides a fibrous form and product comprising the fiber with satisfactory productivity. A splittable conjugate fiber comprising a polyacetal and a polyolefin (e.g., polypropylene, polyethylene or the like), wherein the polyacetal satisfies the following numerical expression: Tc′=144° C. [wherein Tc′ represents the crystallization temperature Tc (° C.) when cooling the polyacetal melted at 210° C. at a cooling rate of 10° C./min].04-08-2010
20080213586POLYSACCHARIDE STRUCTURES COMPRISING AN UNSUBSTITUTED POLYSACCHARIDE AND PROCESSES FOR MAKING SAME - Polysaccharides, more particularly, polysaccharide structures, especially fibers, comprising an unsubstituted polysaccharide, webs comprising such polysaccharide structures and processes for making such polysaccharide structures and/or webs are provided.09-04-2008
20130115452High Denier Per Filament and Low Total Denier Tow Bands - A method for producing a bale of crimped tow band may include providing a tow band having about 10 denier per filament or greater and about 20,000 total denier or less, the tow band comprising a plurality of cellulose acetate filaments; crimping the tow band thereby yielding a crimped tow band; conditioning the crimped tow band; and baling the crimped tow band to form a bale.05-09-2013
20080199695Heat/Fire Resistant Sewing Thread and Method for Producing Same - A heat and flame resistant sewing thread having a core of glass filaments wrapped with a sheath of fibers spun about the core and having a lubricant applied therealong.08-21-2008
20110274923EXTRUSION SYSTEM COMPRISING A BACK PRESSURE CONTROLLING BRAKE DEVICE - The invention relates to an extrusion system for producing cylindrical semi-finished plastic products. The extrusion system comprises an extruder (11-10-2011
20110293936FIBER STRAND AND IMPLANTABLE SUPPORTING BODY HAVING A FIBER STRAND - The invention relates to a fiber strand (12-01-2011
20110293935Preparation of non-spun silk and corresponding products - A method for preparing a textile can include obtaining silk components, such as non-spun silk components, from a cocoon. The method can also involve assembling the obtained silk components obtained from the cocoon into a pattern, and attaching the non-spun silk components together. The method can still further involve shaping the attached non-spun silk components, and finalizing the shape through heat-treatment. In one implementation, heat-treatment of the shaped components comprises heating the components with a heating apparatus (e.g., iron, or oven, etc.) for an appropriate time and at an appropriate temperature. A variety of end products, including jewelry, and textiles for further processing generally, can be made from the silk prepared in accordance with an implementation of the invention.12-01-2011
20090286078POLYIMIDES DOPE COMPOSITION, PREPARATION METHOD OF HOLLOW FIBER USING THE SAME AND HOLLOW FIBER PREPARED THEREFROM - Disclosed herein are a polyimide dope solution composition, a method for preparing a hollow fiber using the composition and a hollow fiber prepared by the method. More specifically, disclosed are a method for preparing a hollow fiber, comprising preparing a polyimide dope solution composition comprising polyhydroxyimide, polythiolimide or polyaminoimide, spinning the composition to prepare a hollow fiber, and thermally rearranging the hollow fiber, and the hollow fiber prepared by the method.11-19-2009

Patent applications in class Rod, strand, filament or fiber

Patent applications in all subclasses Rod, strand, filament or fiber