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| Number | Title | Issue Date |
| 7897082 | Spinning, doping, dedoping and redoping polyaniline fiber A composition of matter suitable for spinning polyaniline fiber, a method for spinning electrically conductive polyaniline fiber, a method for exchanging dopants in polyaniline fibers, and methods for dedoping and redoping polyaniline fibers are described. ... | 03/01/2011 |
| 7887728 | Spinning pack for dry-wet spinning, diverting guide for fiber bundle, and apparatus and method for producing fiber bundle A spinning pack for dry-wet spinning is provided with a spinneret having not less than 6,000 spinning holes and having an aspect ratio Ra of not less than 2.5 for a spinning hole array of the spinning holes. In a device and method for producing a fiber bundle, a dra... | 02/15/2011 |
| 7780888 | Process for making a carbon nanotubes/ultra-high molar mass polyethylene composite fibre The invention relates to a process for making a carbon nanotubes/ultra-high molar mass polyethylene (CNTs/UHPE) composite fiber comprising the steps of a) pre-treating CNTs with an acidic aqueous solution; b) making a composition containing pre-treated CNTs disperse... | 08/24/2010 |
| 7357982 | Polybenzazole fiber and use thereof The present invention relates to polybenzazole fibers or filaments, staple fibers, spun yarns, and woven or knitted fabrics containing in themselves an organic pigment having heat resistance as high as a thermal decomposition temperature of 200° C. or higher, and s... | 04/15/2008 |
| 7285591 | Polymer-nanotube composites, fibers, and processes Disclosed are processes for preparing nanotube composite materials and fibers that provide exceptional nanotube alignment and dispersion. The disclosed processes include contacting nanotube dispersions with polymer melts. Also disclosed are nanotube composite fibers... | 10/23/2007 |
| 7276845 | Electron-emitting device, electron source using the electron-emitting device, and image-forming apparatus using the electron source The present invention provides an electron emitting device comprising: a pair of conductors opposed to each other on a substrate; and a pair of deposition films having carbon as a main component which are respectively connected to the pair of conductors and disposed... | 10/02/2007 |
| 7244813 | Methods of purifying polymeric material A method is disclosed to purify a polymeric material by filtering a melt comprising poly(arylene ether) and poly(alkenyl aromatic) through a melt filtration system. The method provides a polymeric material having reduced levels of particulate impurities. The polymer... | 07/17/2007 |
| 7189346 | Polybenzazole fibers and processes for their preparation The present invention relates to polybenzazaole (PBZ) fibers and processes for the preparation of such fibers. The invention further relates to yarns, fabrics, and articles incorporating fibers of this invention, and processes for making such yarns, fabrics, and art... | 03/13/2007 |
| 7153179 | Oxidation-protected metallic foil and method An electrical lead assembly for devices such as electrical lamps having a metallic foil for providing an electrically conducting path through a hermetic seal formed by pinch sealing a vitreous material. The metallic foil includes an oxidation-inhibiting coating of s... | 12/26/2006 |
| 7135135 | Superabsorbent water sensitive multilayer construction A multilayer construction that includes a first layer that includes water sensitive thermoplastic polymer and a second layer disposed on the first layer, the second layer including superabsorbent polymer. ... | 11/14/2006 |
| 7037096 | Cellulose extrusion Apparatus for the production of extruded blown cellulose film from a solution of cellulose, water and an amine-oxide, which includes:—extrusion apparatus for continuously extruding a cellulose solution to produce a cellulose film;—solidifying apparatus for solid... | 05/02/2006 |
| 7033388 | Porous synthetic vascular grafts with oriented ingrowth channels A vascular prosthesis is constructed from a structure having interconnected, helically oriented channel-porosity to allow oriented ingrowth of connective tissue into a wall of the prosthesis. The prosthesis can have a small internal diameter of 6 mm or less. Several... | 04/25/2006 |
| 7022772 | Optical film comprising polyarylates containing bis-(hydroxyphenyl)-fluorene-ortho-disubstituted bisphenols The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: wherein ... | 04/04/2006 |
| 7015303 | Polyketone solution A solution of a polyketone as a copolymer of carbon monoxide and one or more olefins, wherein 90 wt % or more of said copolymer comprises carbon monoxide units and olefin units, and a solvent is an aqueous solution of at least one member selected from the group cons... | 03/21/2006 |
| 7001805 | Method for fabricating n-type carbon nanotube device A method for fabricating an n-type carbon nanotube device, characterized in that thermal annealing and plasma-enhanced chemical vapor-phased deposition (PECVD) are employed to form a non-oxide gate layer on a carbon nanotube device. Moreover, the inherently p-type c... | 02/21/2006 |
| 6997971 | Cross-linked polybenzimidazole membrane for gas separation A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by reacting polybenzimidazole (PBI) with the sulfone-containing crosslinking agent 3,4-dichloro-tetrahydro-thiophene-1,1-dioxide. The cross-linked reaction product exhibits enhanced ... | 02/14/2006 |
| 6979660 | Polyethylene protective yarn High strength polyethylene yarns useful in ballistic-resistant, cut-resistant and other applications, fabrics produced from these yarns and the methods by which the yarns and fabrics are made. An untwisted yarn of the invention comprises a plurality of filaments in ... | 12/27/2005 |
| 6946015 | Cross-linked polybenzimidazole membrane for gas separation A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by layering a solution of polybenzimidazole (PBI) and α,α′dibromo-p-xylene onto a porous support and evaporating solvent. A supported membrane of cross-linked poly-2,2′-(m-phen... | 09/20/2005 |
| 6930162 | Continuous preparation of thermoplastically processable polyurethanes The present invention relates to a multi-stage process for the continuous preparation of thermoplastically processable polyurethanes with improved processing properties based on various polyols. ... | 08/16/2005 |
| 6916549 | In situ fluoropolymer polymerization into porous substrates The present invention relates to in situ polymerization of fluoropolymer into porous substrates, to improve resistance to degradation by wetting and staining, and wood, to improve resistance to degradation, staining and warping. ... | 07/12/2005 |
| 6830715 | Method and device for producing elastane threads from recycling material Method and device for producing elastane threads from spinning solutions using recycled elastane material. ... | 12/14/2004 |
| 6692828 | High chlorine and heat resistant spandex fiber and manufacturing method thereof Disclosed is a spandex fiber prepared to be excellent in resistance to both chlorine and heat without affecting the properties of the polyurethane polymer, and manufacturing method thereof. The spandex fiber contains hydrotalcite coated with 0.1 to 10 wt.... | 02/17/2004 |
| 6602453 | Process of making elastane yarn Described are a process for producing elastane yarn having a linear density of at least 2500 dtex by the wet spinning process and the thereby producible coarse linear density elastane yarn having a wide cross section and a low residual solvent content. Th... | 08/05/2003 |
| 6569987 | Process for producing meta-aromatic polyamide fiber To produce meta aramid filaments having a good quality from a polymer solution of a meta aramid produced by a solution polymerization method, with high efficiency, (1) a meta aramid is prepared by polymerization-reacting a aromatic meta-diamine with a aro... | 05/27/2003 |
| 6569366 | Process for producing meta-type wholly aromatic polyamide filaments A meta-type wholly aromatic polyamide containing, as principal repeating units, meta-phenylenediamineisophthalamide units is dissolved in an amide compound solvent; the resultant polymer solution is subjected to a wet-spinning procedure wherein the polyme... | 05/27/2003 |
| 6565786 | Method for producing formed article from polyphosphoric acid solution The present invention provides a method for producing a formed article from a dope comprising a polyphosphoric acid solvent and a polymer soluble in polyphosphoric acid, which includes using a production apparatus containing an apparatus for stirring and ... | 05/20/2003 |
| 6533975 | Process of making polyurethane fiber or film This invention provides processes for preparing fiber or film comprising a polyurethane and layers delaminated from a lamellar clay, said layers being dispersed in said polyurethane. Fiber and film produced by the processes of the present invention exhibi... | 03/18/2003 |
| 6506333 | Method of surface modifying a medical tubing The present invention provides a method for fabricating a medical tubing. The method includes the steps of: (1) providing a material selected from the group consisting of ethylene homopolymers and ethylene copolymers, wherein the ethylene copolymers are o... | 01/14/2003 |
| 6436319 | Method of preparing hollow fiber-type separation membrane from high density polyethylene A method for preparing a hollow fiber-type separation membrane from high density polyethylene is provided, which includes the steps of: melt-spinning a mixture of a high density polyethylene and a diluting agent to produce a phase-separated undrawn hollow... | 08/20/2002 |
| 6413070 | System for manufacturing reinforced three-zone microporous membrane Systems and methods for the manufacture of reinforced, three-zone, microporous phase inversion membrane having any one of a plurality of different possible pore sizes in any of the three zones from at least a single mother dope batch is disclosed. The sys... | 07/02/2002 |
| 6290888 | Highly oriented polymer fiber and method for making the same The present invention provides a highly oriented aramid fiber with high tensile strength, high tensile modulus and low breakage elongation by spinning liquid crystal polymers such as aramids and drafting the polymer in or adjacent to a first coagulating b... | 09/18/2001 |
| 6280843 | Wholly aromatic polyamide fibers, a sheet comprising same and method of producing the sheet Aromatic polyamide fibers which have a crystalline structure having (1) crystal size (A) in a (110) plane of 7.5 nm, (2) crystal size (B) in a (200) plane of 8.2 nm and (3) a product A×B of 61.50 to 630.00, and exhibit a thermal linear expansion coeffici... | 08/28/2001 |
| 6258916 | Process for spinning from solution of polyamide-imides (PAI) based on tolylene or meta-phenylene diisocyanates and fibers thus obtained The present invention relates to a process for obtaining PAI fibers by spinning PAI in solution and to the fibers thus obtained. They are obtained by dry or wet spinning into dimethylalkyleneurea followed by removal of the solvent and overdrawing at high tempe... | 07/10/2001 |
| 6245876 | Continuous molded article for polyurethaneurea and production method thereof The present invention relates to a continuous shaped article such as a polyurethaneurea fiber and a polyurethaneurea film having a birefringence index (Ɗn) of from at least 1.0×10-4 to 8.0×10-4 in a nontensile state, a crosslinkin... | 06/12/2001 |
| 6197238 | Methods for making unmodified polyvinyl alcohol fibers This invention relates, in general, to thermoplastic film and fiber structures and methods of making the same. More specifically, this invention relates to substantially water-free films and fibers comprising unmodified polyvinyl alcohol.... | 03/06/2001 |
| 6171537 | Preparation of poly (urethaneurea) fibers A process for the preparation of poly(urethaneurea) fibers by reacting a blocked aliphatic diamine with a capped glycol prepolymer, followed by extrusion spinning, is provided.... | 01/09/2001 |
| 6123883 | Method for preparing polyaniline fibers Stable, concentrated solutions of high molecular weight polyaniline. In order to process high quality fibers and other articles possessing good mechanical properties, it is known that solution concentrations of the chosen polymer should be in the range fr... | 09/26/2000 |
| 6056529 | Systems for producing a plurality of different microporous phase inversion membrane each having any one of a plurality of different pore sizes from a single master dope batch Systems for processing dope for the manufacture of microporous phase inversion membrane having any one of a plurality of different pore sizes from a single master dope batch is disclosed. The systems and methods include formulating a single master batch o... | 05/02/2000 |
| 6054214 | Process for the preparation of carbon fiber A process for preparing high strength carbon fiber from PAN-fiber wherein the time of the oxidation step is reduced from 30-90 minutes to about 8-15 minutes and product prepared therefrom.... | 04/25/2000 |
| 6042941 | Sulphurous p-aramid yarn A fiber of a para-aromatic polyamide polymer having a surprisingly higher modulus. This fiber has a quantity of sulphur bound to the aromatic nuclei of the polymer and wherein the quantity of nucleus-bound sulphur is 0.05-0.20% by weight. A process for th... | 03/28/2000 |
