Polyamide, Polyimide Or Polyester Patents (Class 428/395)
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Patent number: 7406797Abstract: Fly fishing lines and methods for manufacturing fly fishing lines entail the use of polymer microspheres within the fly line coating to produce lines with very low specific gravities. The fly lines have single or multiple coatings. In fly lines having multiple coatings, the inner coating includes polymer microspheres and the outer coating include either polymer microspheres or glass microspheres.Type: GrantFiled: August 26, 2005Date of Patent: August 5, 2008Assignee: Rio Products Intl., Inc.Inventors: John Harder, Marlin Roush, John Schultz, Timothy Moon
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Publication number: 20080152908Abstract: 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: ApplicationFiled: October 24, 2005Publication date: June 26, 2008Applicant: Sunline Co., Ltd.Inventors: Junji Nakazaki, Manabu Hamamoto, Hidenobu Tsutsumi, Toshiaki Ihara, Ichiro Ono, Yoshio Fujiwara
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Publication number: 20080121327Abstract: A polyester fiber cord for reinforcing rubber, characterized in that it is a polyester fiber cord for reinforcing rubber having inner and outer adhesive layers and the inner layer portion of said adhesive layers consists of a resin layer containing a gas barrier resin of which oxygen permeation rate measured under condition of humidity of 50% RH is 10 cc·20 ?m/m2·day·atm or less, and the outer layer portion of said adhesive resin layers consists of a resin layer of which main components are an early condensate of resorcin.formaldehyde and a rubber latex, respectively.Type: ApplicationFiled: January 23, 2006Publication date: May 29, 2008Inventors: Masato Matsumura, Takao Manabe, Jun Tonomura
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Patent number: 7364607Abstract: A wrought fiber sheet or air cleaning filter unit that exhibits high performance and is biodegradable so as to enable reducing load upon environment. The wrought fiber sheet is produced by coupling biodegradable fiber sheets having electret properties by means of a configuration reinforcing member of a biodegradable material. Further, the frame for accommodating the wrought fiber sheet is also constituted of a biodegradable member so as to obtain an air cleaning filter unit that exerts biodegradability as a whole.Type: GrantFiled: May 19, 2003Date of Patent: April 29, 2008Assignee: Toyo Boseki Kabushiki KaishaInventors: Kazuhiro Ueda, Toyota Seki
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Patent number: 7348059Abstract: A yarn, fabric and garment suitable for use in arc and flame protection contains modacrylic, p-aramid and m-aramid fibers wherein the m-aramid fibers have a degree of crystallinity of at least 20%.Type: GrantFiled: July 26, 2005Date of Patent: March 25, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Reiyao Zhu, Debbie Guckert, Susan L. Lovasic
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Patent number: 7338664Abstract: A sustained-release matrix for dental application includes either an anti-microbial agent or a colorant that is released from the matrix when the matrix contacts water. The preferred matrices include a water-soluble polymer and a water-insoluble support resin.Type: GrantFiled: September 15, 2003Date of Patent: March 4, 2008Assignee: The Gillette CompanyInventors: Mingchih M. Tseng, Carl M. Philbrook
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Patent number: 7332196Abstract: The present invention provides a fiber-reinforced glass having excellent heat resistance and toughness, or a composite comprising a heat-resistant fiber and a siloxane polymer, which has a modified surface structure and is useful as a heat-resistant fiber.Type: GrantFiled: March 28, 2003Date of Patent: February 19, 2008Assignees: Kazari-Ichi Co., Ltd., Sakase Adtech Co., Ltd.Inventors: Kazuhiko Kosuge, Hideo Nakamura, Tsutomu Yamamoto, Yoko Iwamiya, Osamu Yagi
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Patent number: 7329459Abstract: The subject matter herein is directed to a polymer-based cap ply reinforcement material that has a shrinkage component, wherein the reinforcement material is treated such that the shrinkage component increases at least about 10% over a reference shrinkage component of a reference polymer-based reinforcement material. The subject matter herein is further directed to a method of producing a product comprising a polymer-based cap ply reinforcement material, wherein the method includes: a) providing a reference polymer-based cap ply reinforcement material having a reference shrinkage component; b) providing a polymer-based cap ply reinforcement material having a shrinkage component; c) treating the polymer-based cap ply reinforcement material such that the shrinkage component increases at least about 10% over the reference shrinkage component of the reference polymer-based cap ply reinforcement material.Type: GrantFiled: March 7, 2003Date of Patent: February 12, 2008Assignee: Performance Fibers, Inc.Inventor: Peter Bryan Rim
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Patent number: 7318853Abstract: Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.Type: GrantFiled: November 2, 2006Date of Patent: January 15, 2008Assignee: Donaldson Company, Inc.Inventors: Hoo Y. Chung, John R. B. Hall, Mark A. Gogins, Douglas G. Crofoot, Thomas M. Weik
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Patent number: 7303817Abstract: A dental filling material comprising an inner core and outer layer of material disposed and surrounding the inner core, both the inner core and outer layer of material each containing a thermoplastic polymer. The thermoplastic polymer may be biodegradable. A bioactive substance may also be included in the filling material. The thermoplastic polymer acts as a matrix for the bioactive substance. The composition may include other polymeric resins, fillers, plasticizers and other additives typically used in dental materials. The filling material is used for the filing of root canals.Type: GrantFiled: August 6, 2004Date of Patent: December 4, 2007Inventor: Weitao Jia
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Patent number: 7273501Abstract: A highly white and highly moisture absorptive and desorptive fibrous structure where a moisture absorptive and desorptive synthetic fiber having a saturated index of moisture absorption of 10% by weight or more at 20° C. and 65% RH is blended, characterised in that, degree of whiteness of said fibrous structure in terms of indication method described in JIS Z 8729 is that L* is 90 or more, a* is within a range of ±2 and b* is within a range of ±10 and durability of whiteness degree against washing after washing for ten times is class 3-4 or higher.Type: GrantFiled: July 15, 2002Date of Patent: September 25, 2007Assignee: Japan Exlan Company, LimitedInventors: Shigeru Nakashima, Jo Mizobe
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Patent number: 7247373Abstract: A racquet string includes a core component whose principal component is a synthetic fiber, and a surface resin component, wherein fullerenes or by-product carbon particles derived from manufacture of fullerenes are blended into the surface resin component, and wherein the blended percentage content is in a range of at least 0.01 wt % and at most 5.0 wt % of the entire string. The surface resin component may be formed as a sheath component by coating or by composite spinning. It is preferable that the amount of fullerenes or by-product carbon particles derived from the manufacture of fullerenes that is included in the surface resin component is in a range of at least 0.1 wt % and at most 25 wt %. Thus, the durability of the racquet string is improved without substantially changing its physical properties.Type: GrantFiled: February 10, 2005Date of Patent: July 24, 2007Assignee: Gosen Co., Ltd.Inventors: Kazuhiro Akagi, Kenichi Umano, Yutaka Masuda
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Patent number: 7247369Abstract: Microporous articles formed by thermally induced phase separation from a diluent in combination with a thermoplastic polymer and a fluorochemical additive providing novel fluid repellent articles. Such articles are useful in clothing, barrier membranes, optical films in electronic devices (such as light reflective and dispersive films), and protective garments.Type: GrantFiled: February 3, 2005Date of Patent: July 24, 2007Assignee: 3M Innovative Properties CompanyInventors: James S. Mrozinski, Chetan P. Jariwala
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Patent number: 7201777Abstract: The present invention relates to a nonwoven fabric having a relatively low level of ionic contaminates which is achieved by exposing the fabric to a deionized water wash, preferably, in-line with the nonwoven production process, thereby eliminating, or at least reducing, the need for an expensive and time consuming cleanroom laundering. The fabric is primarily comprised of continuous filament fibers and may be manufactured into such end-use products as cleaning wipes and protective clothing for cleanrooms and surface coating operations, such as automotive paintrooms. Also encompassed within this invention is a method for producing a nonwoven fabric having a relatively low level of ionic contaminates.Type: GrantFiled: March 28, 2002Date of Patent: April 10, 2007Inventor: Archer E. D. Booker, Jr.
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Patent number: 7199065Abstract: The present invention provides non-woven laminate that is not subjected to final consolidation by a binder and the production thereof. The laminate includes at least one non-woven mat containing glass staple fibers pre-consolidated with a resin, and at least one non-woven layer of synthetic fibers. The synthetic non-woven layers and the pre-consolidated non-woven mat of glass fibers are bounded together by needling such that a portion of the fibers of the upper synthetic non-woven layer passes through the non-woven mat of glass fibers possibly through the underlying synthetic non-woven layer. The synthetic fibers are heat shrunken and the laminate is binder free.Type: GrantFiled: July 19, 2000Date of Patent: April 3, 2007Assignee: Johns ManvilleInventors: Werner Groh, Michael Schöps, Jörg Lehnert
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Patent number: 7198843Abstract: The present invention discloses a high strength low shrinkage polyester drawn yarn used as industrial yarns and a process or producing the same. The strength low shrinkage polyester drawn yarn has a thermal relaxation stress change ratio of 5 to 100% and a thermal relaxation stress area ratio of 50 to 140% on a thermal relaxation and shrinkage stress curve with a final temperature set to 170% C.Type: GrantFiled: July 26, 2003Date of Patent: April 3, 2007Assignee: Kolon Industries, Inc.Inventors: Yun-Jo Kim, Su-Jin Lee
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Patent number: 7189295Abstract: Yarn suitable for tufting comprises a base fiber ring spun or wrap spun with a second fiber at least partially comprising a heat-activated adhesive material such that the yarn includes from 0.1 to 12, preferably 0.25 to 10, weight percent adhesive material having a melting point within the range of 105° to 190° C., more preferably 165° to 190° C. A preferred base fiber is a synthetic staple fiber bundle. A preferred wrapping or insert fiber comprises copolyamide material, including ternary copolyamides of the 6/66/12 type. When the yarn is twist set by conventional processes and then tufted into carpet, the resulting carpet displays enhanced wear and appearance properties.Type: GrantFiled: October 21, 2004Date of Patent: March 13, 2007Assignee: Alliedsignal Inc.Inventor: Charles Edward Bowers
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Patent number: 7163743Abstract: The present invention provides monofilaments coated with certain adhesive layers and methods to produce the coated filaments. Also provided are fabrics formed from the monofilaments. The coated monofilaments and fabrics provide improved adhesion with additional coating top layers.Type: GrantFiled: April 4, 2003Date of Patent: January 16, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Kenneth B. Atwood, Anne-Marie Coffin, John D. Feathers, Richard Allen Hayes, Charles F. Nelson
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Patent number: 7147914Abstract: The present invention relates to a full dull polyamide 6 yarn and a process for preparing the same. The yarn of this invention contains 1.5 to 2.5% by weight of titanium dioxide relative to the weight of the yarn, has 35 to 95 titanium dioxide particles having a major axial length of greater than 5 ?m being contained in 50 mg of the yarn, and contains 0.1 to 0.5% by weight of phosphate salt (wetting agent) relative to the weight of titanium dioxide. In the process of this invention, 0.1 to 0.5% by weight of phosphate salt relative to the weight of titanium dioxide is added as a wetting agent, carprolactam is applied along with water upon concentration correction, and naphthalene sulfonate based salt is applied along with titanium dioxide slurry during the process of polyamide 6 polymerization.Type: GrantFiled: November 21, 2003Date of Patent: December 12, 2006Assignee: Kolon Industries, IncInventors: Jae-Young Kim, Young-Tae Park
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Patent number: 7147928Abstract: The invention concerns a stain resist composition comprising: (a) a component selected from the group consisting of (1) a naphthalene condensate, (2) a lignin sulfonate, (3) a phenol sulfonate derivative, a mixture thereof and (4) a (meth)acrylic polymer comprising residues of acrylic or methacrylic acid; and (b) a polyester.Type: GrantFiled: July 26, 2002Date of Patent: December 12, 2006Assignee: Arrow Engineering, Inc.Inventors: Robert B. Collier, J. Todd Mull
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Patent number: 7135228Abstract: Fibers having improved resistance to moisture at elevated temperatures comprise at least two elastic polymers, one polymer heat-settable and the other polymer heat-resistant, the heat-resistant polymer comprising at least a portion of the exterior surface of the fiber. The fibers typically have a bicomponent and/or a biconstituent core/sheath morphology. Typically, the core comprises an elastic thermoplastic urethane, and the sheath comprises a homogeneously branched polyolefin, preferably a homogeneously branched substantially linear ethylene polymer.Type: GrantFiled: July 15, 2002Date of Patent: November 14, 2006Assignee: Dow Global Technologies Inc.Inventors: Ashish Sen, John Klier, Rajen M. Patel, Hongyu Chen, Thoi H. Ho
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Patent number: 7122244Abstract: The present invention relates to a polyamideimide resin solution preparable by reacting (a) aromatic polycarboxylic acids and/or their anhydrides with (b) aromatic imide- and amide-forming components in cresol at temperatures above 170° C., to the use of this polyamideimide solution for the preparation of wire enamels, to the wire enamels in question, and to the enamelled wires coated therewith.Type: GrantFiled: August 27, 2001Date of Patent: October 17, 2006Assignee: Altana Electrical Insulation GmbHInventors: Sascha Tödter König, Klaus Wilhelm Lienert, Gerold Schmidt
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Patent number: 7094467Abstract: An antistatic polymer monofilament of this invention comprises a polymer composite of a thermoplastic polymer as a matrix and carbon nanotubes as a conductive filler. A process of this invention for manufacturing an antistatic polymer monofilament comprising the steps of blending in an extruder a thermoplastic polymer and carbon nanotubes and extruding monofilaments from said blend. An industrial fabric of this invention, which is usable in nonwoven and papermaking machines, said fabric comprising monofilaments for dissipating static charges, said monofilaments including a thermoplastic polymer matrix and a filler of carbon nanotubes.Type: GrantFiled: July 20, 2004Date of Patent: August 22, 2006Inventors: Heping Zhang, William Harwood, Gilbert Ross
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Patent number: 7090715Abstract: Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.Type: GrantFiled: September 30, 2003Date of Patent: August 15, 2006Assignee: Donaldson Company, Inc.Inventors: Hoo Y. Chung, John R. B. Hall, Mark A. Gogins, Douglas G. Crofoot, Thomas M. Weik
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Patent number: 7087299Abstract: Polyester fibers having an individual fiber thickness of 0.1 to 10 dtex are produced from a polyester polymer produced by polycondensing an aromatic dicarboxylate ester in the presence of a catalyst including a mixture of a Ti compound component (A) including at least one member selected from titanium alkoxides and reaction products of the titanium alkoxides with a specific type of carboxylic acids or anhydrides thereof, with a specific P compound component (B), and/or a reaction product of a Ti compound component (C) with a specific P compound component (D). The resultant fibers have a good color tone (a low b value) a stable drawing and false-twisting processability and exhibit excellent appearance and performance.Type: GrantFiled: December 26, 2003Date of Patent: August 8, 2006Assignee: Teijin Fibers LimitedInventors: Masahiro Konishi, Tsuyoshi Masuda, Hiroyuki Osaka, Keijiro Hattori
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Patent number: 7081299Abstract: The present invention is a meltblown fiber and a fabric manufactured from the fiber comprising reactor grade polypropylene having a melt flow rate of from 100 to 5000 and having less than 50 stereo defects per 1000 units. Further, the polypropylene is typically produced from a metallocene catalyzed process, the metallocene being at least one bridged 2,4 di-substituted indenyl metallocene in one embodiment, and a bridged 4-phenyl indenyl metallocene in another embodiment. The metallocene is part of a system that can include a fluorided support and a non-coordinating anion activator.Type: GrantFiled: August 22, 2001Date of Patent: July 25, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventor: Galen Charles Richeson
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Patent number: 7067189Abstract: An adhesion promoter comprises a polymeric strand with an epoxy-reactive group other than a phenolic hydroxyl group, and a crosslinking group that crosslinks the polymeric strand with a rubber in a crosslinking reaction, wherein the polymeric strand is water soluble in an amount of at least 10 g/l, and more preferably at least 100 g/l. Particularly contemplated adhesion promoters may further comprise styrene-butadiene-vinylpyridine copolymer, and may advantageously be employed as a replacement for resorcinol-formaldehyde latex in the fabrication of a rubber containing tire. Especially contemplated rubber compositions may additionally comprise maleinized polybutadiene to synergistically improve adhesion of the rubber to a polymeric fiber coupled via contemplated adhesion promoters.Type: GrantFiled: July 8, 2004Date of Patent: June 27, 2006Assignee: Performance Fibers, Inc.Inventors: Truc-Chi Huynh-Tran, Huy X. Nguyen
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Patent number: 7049391Abstract: The invention relates to a method for reducing the caprolactam content of polyamide 6 obtained especially by hydrolytic polymerization of epsilon-caprolactam. The method is characterized by the use of an additive that forms isocyanuric acid under the influence of heat. The additive or the isocyanuric acid produced externally under the influence of heat is added (a) to the polymerization or (b) to a melt of polyamide 6. This enables the caprolactam content of the polyamide 6 to be reduced considerably compared to that of usual commercial polyamide 6. In particular, the resulting polyamide 6 shows good characteristics for reprocessing e.g. into fiber and molding masses by melt extension.Type: GrantFiled: September 24, 2001Date of Patent: May 23, 2006Assignee: BASF AktiengeselleschaftInventors: Frank Gähr, Frank Hermanutz, Mirko Peczyoski
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Patent number: 7045209Abstract: The present invention discloses novel fibers for use as secondary reinforcement materials in cementitious composites, which fibers are effective in preventing cracking far better than prior art fibers. Also disclosed are methods of producing the fibers and methods for producing cementitious composite containing the fibers.Type: GrantFiled: March 28, 2000Date of Patent: May 16, 2006Inventor: Dror Selivansky
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Patent number: 7045210Abstract: The invention relates to a reinforcing bar for mineral building materials, particularly for cement. The inventive reinforcing bar (10) is made of a bar of plastic material reinforced by fiber, which has a central, elongate core (12) and several ribs (14) which extend along the length of the core, which are disposed at an angular distance from each other, which form a cross or a star in the cross section thereof and which are twisted around the core axis (16) in a helical manner.Type: GrantFiled: January 9, 2002Date of Patent: May 16, 2006Assignee: Sika Schweiz AGInventor: Alexander Bleibler
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Patent number: 7026435Abstract: Polymer derivatives based upon polyalkyleneimine backbones having from about 20% to about 60% of their reactive amino functionalities substituted by C14-20 carboxylic acids, are disclosed. Fiber lubricants and/or sizing compositions comprising such polymer derivatives are also disclosed. The disclosed fiber lubricants exhibit excellent affinity for fiberglass fibers and have excellent hydrophobicity, while also providing excellent lubrication. Methods for preparing said derivatives are also disclosed. Also disclosed are methods for treating fibers using the polymer derivatives.Type: GrantFiled: June 6, 2001Date of Patent: April 11, 2006Assignee: Cognis CorporationInventors: Douglas F. Fry, Frank Norman Tuller
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Patent number: 7021349Abstract: The present spin finish composition comprises at least about 10 percent by weight based on the spin finish composition of components (a) and (b) having the formula R1—(CO)x—O—(CH(R2)—CH2—O)y—(CO)z—R3 wherein each of R1 and R3 is selected from the group consisting of hydrogen or an alkyl group having from one to 22 carbon atoms or an alkylene hydroxy group having from one to 22 carbon atoms, x is zero or one, R2 may vary within component (a) or component (b) and is selected from the group consisting of hydrogen or an alkyl group having from one to four carbon atoms, y is zero, or from one to 25, and z is zero or one, in component (a), x and z are equal to zero and the average molecular weight of component (a) is less than or equal to 1,900 and if R2 varies, component (a) is a random copolymer; and in component (b), at least x or z is equal to one or component (b) is a complex polyoxyethylene glyceride-containing compound having greater than 10 polyoxyethylene units; up to about five percent by weight baseType: GrantFiled: September 3, 2004Date of Patent: April 4, 2006Assignee: Performance Fibers, Inc.Inventor: Ralf Klein
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Patent number: 7019103Abstract: A terminal-crosslinkable polyamic acid oligomer having 1) heat resistance indicated by Tg of 300° C. or more and a pyrolysis temperature of 500° C. or more, 2) toughness, and 3) capability of allowing an increase in concentration. The polyamic acid oligomer is obtained by reacting an aromatic tetracarboxylic dianhydride including 2,2?,3,3?-biphenyltetracarboxylic dianhydride, an aromatic diamine compound, and a reactive crosslinking agent including an amino group or acid anhydride group and a crosslinkable group in the molecule, and includes a crosslinkable group at the molecular terminal.Type: GrantFiled: May 5, 2004Date of Patent: March 28, 2006Assignees: JSR Corporation, Ube Industries, Ltd.Inventors: Rikio Yokota, Kohei Goto, Hideki Ozawa
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Patent number: 7015304Abstract: 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: July 23, 2004Date of Patent: March 21, 2006Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Chun-Hua Chuang
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Patent number: 7001664Abstract: An apparatus and method for producing self-texturing hollow fiber that exhibits a desirable tendency to coil rather than to bend sharply or zig-zag. In one embodiment the invention is a spinneret for the production of hollow filament having first and second curved slots where each slot is defined by a first end having a first width and a second end having a second width and where the first and second ends are separated by an intermediate portion possessing a non-uniform width. In another embodiment the invention is a method for of producing generally cylindrical hollow filaments comprising extruding a polymer melt through a spinneret having first and second curved slots where each slot has a first end having a first width and a second end having a second width and where the first and second ends are separated by a intermediate portion possessing a non-uniform width along the continuum defined by the distance between the first end and the second end.Type: GrantFiled: September 27, 2004Date of Patent: February 21, 2006Assignee: Wellman, Inc.Inventors: Frederick L. Travelute, Evan T. Basalik
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Patent number: 7001663Abstract: The invention relates to a monofilament of polyamide, especially for flat textile products, for use in paper machines, for instance, as well as a flat textile product and a method for producing same.Type: GrantFiled: June 13, 2002Date of Patent: February 21, 2006Assignee: Albany International Corp.Inventor: Hans-Peter Breuer
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Patent number: 6998461Abstract: Disclosed are a modified polyester fiber and a process for producing the same. The modified polyester fiber comprises the component of alkoxylated 2-methyl-1,3-propanediol and has the properties of easy dyeability at low temperatures and good colorfastness to laundering. The modified polyester fiber can be produced by undergoing a polymerization reaction of alkoxylated 2-methyl-1,3-propanediol, alkanediol, and terephthalic acid or an alkyl ester thereof, and then spinning. The modified polyester fiber can be dyed at low temperature and has excellent dyeability and colorfastness to laundering. Therefore, this modified polyester fiber can be widely used in the application of synthetic fiber product.Type: GrantFiled: June 12, 2003Date of Patent: February 14, 2006Assignee: Dairen Chemical CorporationInventors: Shien Chang Chen, June Yen Chou, Hsing Yun Wang, Nan Min Chen
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Patent number: 6989193Abstract: Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispersible sulfopolyester having a Tg of at least 57° C. and a water non-dispersible polymer. The multicomponent fibers may be used to produce microdenier fibers. Fibrous articles may be produced from the water-dispersible fibers, multicomponent fibers, and microdenier fibers. The fibrous articles include water-dispersible and microdenier nonwoven webs, fabrics, and multilayered articles such as wipes, gauze, tissue, diapers, panty liners, sanitary napkins, bandages, and surgical dressings. Also disclosed is a process for water-dispersible fibers, nonwoven fabrics, and microdenier webs.Type: GrantFiled: May 20, 2004Date of Patent: January 24, 2006Inventors: William Alston Haile, Scott Ellery George, Wesley Raymond Hale, Waylon Lewellyn Jenkins
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Patent number: 6982118Abstract: A package of polyester type conjugate fiber of either a side-by-side type or an eccentric sheath/core type in which two kinds of polyester components are adhered to each other to form a single filament, wherein at least one of the components consisting of the single filament is polytrimethylene terephthalate containing repeating units of trimethylene terephthalate of 90 mol % or more, which package is formed of 2 kg or more of the conjugate fiber and satisfies the following items (1) to (3): (1) the difference in diameter between a selvage portion and a central portion of the package is 10 mm or less, (2) a winding width of the package is in a range from 60 to 250 mm and a diameter of the package is in a range from 100 to 400 mm, and (3) the difference in dry-heat shrinkage stress value between the conjugate fibers layered in the selvage portion and the central portion of the package is 0.05 cN/dtex or less.Type: GrantFiled: October 7, 2004Date of Patent: January 3, 2006Assignee: Asahi Kasei Fibers CorporationInventors: Tadashi Koyanagi, Takao Abe
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Patent number: 6969437Abstract: Yarn suitable for tufting comprises a base fiber ring spun or wrap spun with a second fiber at least partially comprising a heat-activated adhesive material such that the yarn includes from 0.1 to 12, preferably 0.25 to 10, weight percent adhesive material having a melting point within the range of 105° to 190° C., more preferably 165° to 190° C. A preferred base fiber is a synthetic staple fiber bundle. A preferred wrapping or insert fiber comprises copolyamide material, including ternary copolyamides of the 6/66/12 type. When the yarn is twist set by conventional processes and then tufted into carpet, the resulting carpet displays enhanced wear and appearance properties.Type: GrantFiled: August 31, 1998Date of Patent: November 29, 2005Assignee: AlliedSignal Inc.Inventor: Charles Edward Bowers
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Patent number: 6967058Abstract: Disclosed is a method of producing a polyethylene terephthalate-based polyester fiber, including spinning polyethylene terephthalate based polyester to produce an undrawn yarn with an intrinsic viscosity of 0.83 or more and a density of 1.338 g/cm3 or more, multi-stage drawing the undrawn yarn, heat-setting the drawn yarn, relaxing the heat-set yarn, and winding the relaxed yarn to produce the resulting drawn yarn with an intrinsic viscosity of 0.83 or more and a density of 1.38 to 1.3865 g/cm3. Compared to a prior polyester yarn with high modulus and low shrinkage, produced according to conventional melt-spinning and drawing processes, an industrial polyester yarn with high modulus and low shrinkage according to the present invention contributes to significantly improving strength retention (tenacity of a dip cord/tenacity of a grey yarn) of the dip cord, produced by treating the polyester yarn of the present invention with an adhesive (RFL) and subsequently heat-treating the RFL-treated polyester yarn.Type: GrantFiled: February 23, 2005Date of Patent: November 22, 2005Assignee: Hyosung CorporationInventors: Chan-min Park, Chan Park, Eun-lai Cho
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Patent number: 6967057Abstract: A process for preparing poly(trimethylene terephthalate) fibers including (a) providing a poly(trimethylene terephthalate) composition comprising about 0.05 to about 10 weight % ionomer and (b) spinning the polymer composition to form fibers. In addition, a poly(trimethylene terephthalate) fiber including poly(trimethylene terephthalate) with about 0.1 to about 10 weight % ionomer dispersed throughout the poly(trimethylene terephthalate), and use thereof in yarns, fabrics, and carpets, as well as the yarns, fibers and fabrics.Type: GrantFiled: December 3, 2003Date of Patent: November 22, 2005Assignee: E.I. du Pont de Nemours and CompanyInventors: Jing C. Chang, Joseph V. Kurian, Sam Louis Samuels
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Patent number: 6955854Abstract: The present invention relates to a high tenacity polyethylene naphthalate fiber containing a silica compound. This fiber is produced by a method comprising the steps of: (A) melt-spinning a solid phase-polymerized polyethylene-2,6-naphthalate chip containing ethylene-2,6-naphthalate units at more than 85 mole % and a silica compound and having an intrinsic viscosity of 0.70-1.20, to produce a melt-spun yarn; (B) passing the melt-spun yarn through a retarded cooling zone and a cooling zone to solidify the yarn; (C) withdrawing the yarn at such a speed that the undrawn yarn has a birefringence of 0.001-0.1; and (D) subjecting the undrawn yarn to multi-stage drawing at a total draw ratio of at least 1.5 and a drawing temperature of 50-250° C.Type: GrantFiled: January 23, 2004Date of Patent: October 18, 2005Assignee: Hyosung CorporationInventors: Ik-Hyeon Kwon, Woo-Sung Kim, Yun-Hyuk Bang, Young-Jo Kim, Chan-Min Park
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Patent number: 6943231Abstract: Transparent polyamide molding materials are provided which are characterized in that they have a melting enthalpy between 0 and 12 J/g and the polyamides are constituted of 100 mole-% of a diamine mixture having 10-70 mole-% of PACM [bis-(4-amino-cyclohexyl)-methane] with less than 50 wt.Type: GrantFiled: June 2, 2003Date of Patent: September 13, 2005Assignee: EMS-Chemie AGInventor: Friedrich Severin Bühler
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Patent number: 6926962Abstract: The invention provides dyed yarn characterized by comprising dyed polytrimethylene terephthalate fiber, having an elastic recovery of 60% or greater under 10% elongation, and having a boiling water shrinkage of no greater than 4%. The dyed yarn of the invention has excellent stretchability and dimensional stability as well as a soft feel, and is therefore suitable for use in fabrics.Type: GrantFiled: May 17, 2001Date of Patent: August 9, 2005Assignee: Asahi Kasei Kabushiki KaishaInventors: Hiroshi Yamazaki, Kazuto Oue, Mitsuyuki Yamamoto
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Patent number: 6924032Abstract: A flame retarding polypropylene fiber and flame retarding polypropylene film having both good flame retardancy and good fiber strength and film strength, and generating no toxic gas, and a production method thereof are provided. 0.5 to 3.0% by weight of a NOR type hindered amine-based stabilizer and 0.5 to 3.0% by weight of a phosphoric ester-based flame retardant are mixed with a polypropylene resin having a melt flow rate value of 5 to 50 g/10 min., the mixture is spun to form an unstretched yarn, and then the yarn is stretched at a stretching magnification of 2 to 7-fold and a stretching temperature of 50 to 100° C., and further set thermally at a temperature of 60 to 140° C. Since the flame retarding polypropylene fiber obtained contains the above-mentioned range of the NOR type hindered amine-based stabilizer and the phosphoric ester-based flame retardant, it has both adequate fiber strength and good flame retardancy.Type: GrantFiled: April 6, 2001Date of Patent: August 2, 2005Assignee: Mitsubishi Rayon, Co., Ltd.Inventors: Yoshishige Shimizu, Hiroshi Yamamoto, Hideo Sakakura
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Patent number: 6911257Abstract: The invention relates to a process for the manufacture of homopolyamide-4,6 fibers by melt spinning of homopolyamide-4,6, to fibers and multifilament yarns obtainable by the process and the use thereof for the reinforcement of rubber like in tire cords, V-belts etc. The invention further relates to a novel homopolyamide-4,6, a process for the manufacture thereof and the use of the new homopolyamide-4,6 for the manufacture of fibers, films and injection molded articles. The homopolyamide-4,6 fiber is manufactured by melt spinning of homopolyamide-4,6 having nascent morphology with a melting enthalpy of at least 140 J/g and a main melting temperature between 290 and 305° C.Type: GrantFiled: July 5, 2002Date of Patent: June 28, 2005Assignee: DSM IP Assets B.V.Inventors: Jippe Van Ruiten, Johan A. F. Kunst, Rudy Rulkens, Jan P Penning
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Patent number: 6906165Abstract: The invention concerns copolyamides obtained by using multifunctional monomers. It consists in using a multifunctional monomer comprising at least three reactive functions and at least another multifunctional monomer, in amounts such that the terminal group concentrations are balanced. The copolyamides are particularly high viscosity copolyamides. The invention also concerns compositions based on said copolyamides.Type: GrantFiled: August 7, 2001Date of Patent: June 14, 2005Assignee: Rhodia Engineering Palstics S.R.L.Inventors: Giuseppe Di Silvestro, Franco Speroni, Cuiming Yuan, Haichun Zhang
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Patent number: 6905987Abstract: Environmentally degradable melt spun fibers comprising a polyhydroxyalkanoate copolymer and a polylactic acid polymer or copolymer are disclosed. A preferred configuration of the present invention is directed to environmentally degradable fibers comprising a sheath/core structure where the core comprises a biodegradable polyhydroxyalkanoate copolymer and the sheath comprises a polymer or copolymer of polylactic acid. Nonwoven webs and disposable articles comprising the environmentally degradable fibers are also disclosed.Type: GrantFiled: January 17, 2002Date of Patent: June 14, 2005Assignee: The Procter & Gamble CompanyInventors: Isao Noda, Eric Bryan Bond, David Harry Melik
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Patent number: 6902803Abstract: An undrawn yarn is produced at increased quench delay and increased take-up speed to achieve improved ultimate elongation at a given crystallinity. Particularly preferred aspects include products comprising such yarns and methods for producing same.Type: GrantFiled: October 6, 2003Date of Patent: June 7, 2005Assignee: Performance Fibers, Inc.Inventors: Peter B. Rim, Qiang Zhou, Richard H. Woodlee, Michael F. Kopplin