Fluorine-containing Monomer Contains F And C Only Or Only F, C, And H Patents (Class 524/545)
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Patent number: 7449523Abstract: Processable rubber compositions contain a vulcanized fluorocarbon elastomer and wear reducing additives dispersed in a matrix of a thermoplastic polymeric material. In one embodiment the matrix forms a continuous phase and the vulcanized elastomeric material is in the form of particles forming a non-continuous phase. The compositions are made by combining a curative, an uncured fluorocarbon elastomer, a wear reducing additive and a thermoplastic material, and heating the mixture at a temperature and for a time sufficient to effect vulcanization of the elastomeric material, while mechanical energy is applied to mix the mixture during the heating step. Shaped articles such as seals, gaskets, O-rings, and hoses may be readily formed from the rubber compositions according to conventional thermoplastic processes such as blow molding, injection molding, and extrusion.Type: GrantFiled: December 27, 2004Date of Patent: November 11, 2008Assignee: Freudenberg-NOK General PartnershipInventor: Edward Hosung Park
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Publication number: 20080207823Abstract: The present concerns a method of fabricating a layer for an organic light emitting device comprising solution processing a layer from a solution comprising a small molecule emissive material, an aprotic solvent, and a polymeric material.Type: ApplicationFiled: December 28, 2005Publication date: August 28, 2008Applicant: E.I. du Pont de Nemours and CompanyInventors: Daniel David Lecloux, Matthew Stainer, Eric Maurice Smith, Reid John Chesterfield, Shiva Prakash
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Publication number: 20080149887Abstract: An electrode binder composition comprising at least one metal chelate compound and at least one fluoropolymer. The binder composition used in a battery electrode improves the cohesion of the powdered active electrode material as well as the adhesion strength between the active material layer and the metallic current collector. The invention further relates to battery electrodes containing the binder composition for lithium ion secondary batteries and electric double layer capacitors.Type: ApplicationFiled: December 21, 2007Publication date: June 26, 2008Inventors: Jian Wang, Masahiro Yamamoto, Ronald Earl Uschold
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Publication number: 20080153955Abstract: A process for the preparation of a fluoroolefin polymer from an azeotropic mixture of monomers having a constant composition, the process including the step of: contacting in a reaction zone: (i) an initiator; and (ii) an azeotropic mixture of monomers including at least one fluoroolefin and, optionally, at least one ethylenically unsaturated comonomer capable of copolymerizing therewith; wherein the contacting is carried out at a temperature, pressure and length of time sufficient to produce the fluoroolefin polymer.Type: ApplicationFiled: December 20, 2007Publication date: June 26, 2008Inventors: George J. Samuels, Gregory J. Shafer, Hang T. Pham
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Publication number: 20080131683Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: ApplicationFiled: January 10, 2008Publication date: June 5, 2008Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta, Bradley E. Reis
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Patent number: 7375157Abstract: A polymer melt additive that is suitable for use as a processing aid in the extrusion of a non-fluorinated polymer. The polymer melt additive composition includes a fluoropolymer that has a long chain branching index (LCBI) of at least 0.2 and a zero shear rate viscosity at 265° C. of not more than 107 Pa's. The polymer melt additive may additionally include other compounds such as, polyoxyalkylene polymer or polycaprolactone.Type: GrantFiled: June 9, 2004Date of Patent: May 20, 2008Assignee: 3M Innovative Properties CompanyInventors: Stephen E. Amos, Klaus Hintzer, Harald Kaspar, Claude Lavallée
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Patent number: 7371510Abstract: Provided are a material for forming a resist protecting film which is for use in a liquid immersion lithography process and which is formed on a resist film, wherein the material has the following properties of: being transparent with respect to exposure light; having substantially no compatibility with a liquid for liquid immersion lithography; and causing no mixing with the resist film, a composite film comprising a protective film formed from the material and a resist film, and a method for forming a resist pattern using them. These can prevent both the resist film and the liquid used from changing in properties during the liquid immersion lithography, so that a resist pattern with high resolution can be formed using the liquid immersion lithography.Type: GrantFiled: February 6, 2007Date of Patent: May 13, 2008Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Taku Hirayama, Ryoichi Takasu, Mitsuru Sato, Kazumasa Wakiya, Masaaki Yoshida, Koki Tamura
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Patent number: 7365122Abstract: A fluoroelastomer composition, which comprises 100 parts by weight of vinylidene fluoride-perfluoro(methyl vinyl ether)-tetrafluoroethylene terpolymer or vinylidene fluoride-hexafluoropropene copolymer, and 10-50 parts by weight of liquid fluoroelastomer having a viscosity of 500 to 3,000 cps at 100° C., can be made cross-linkable or vulcanizable fluoroelastomer composition upon further addition of 0.5 to 5 parts by weight of an organic peroxide and 0.5 to 10 parts by weight of a polyfunctional unsaturated compound or further addition of 0.5 to 10 parts by weight of a polyol-based vulcanizing agent thereto. The fluoroelastomer composition can give a cross-linked or vulcanized product having a hardness (Durometer A) of not more than 50 and distinguished processability and compression set resistance characteristics.Type: GrantFiled: December 6, 2006Date of Patent: April 29, 2008Assignee: NOK CorporationInventors: Yoshifumi Kojima, Atsushi Koga, Kenichi Fujimoto
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Patent number: 7349215Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: GrantFiled: May 5, 2006Date of Patent: March 25, 2008Assignee: Gore Enterprise Holdings, Inc.Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta, Bradley E. Reis
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Patent number: 7344796Abstract: A gasket elastomer precursor of admixed fluoroelastomer particulate, curing agent, and metallic oxide reduction-agent optionally admixed with any of microspheres, inert particulate, PTFE particles. In one embodiment, the composition is applied to a substrate and cured to provide a fuel cell gasket. The admixtures provide a basis for designed cured admixtures having internally differentiated regions interbonded by cured elastomer.Type: GrantFiled: February 18, 2004Date of Patent: March 18, 2008Assignee: Freudenberg-NOK General PartnershipInventors: Hui Liang Yuan, Yingjie Kong
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Patent number: 7342066Abstract: The present invention provides an aqueous non-melt processible polytetrafluoroethylene dispersion comprising non-melt processible polytetrafluoroethylene particles in an amount between 30 and 70% by weight based on the total weight of the dispersion and one or more non-ionic surfactants and wherein at least a part of said non-melt processible polytetrafluoroethylene particles comprise polytetrafluoroethylene polymer chains having repeating units comprising ionic groups. The invention further provides a method for obtaining the dispersions.Type: GrantFiled: October 4, 2004Date of Patent: March 11, 2008Assignee: 3M Innovative Properties CompanyInventors: Michael C. Dadalas, Klaus Hintzer, Gernot Loehr, Tilman Zipplies
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Patent number: 7342793Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: GrantFiled: January 20, 2005Date of Patent: March 11, 2008Assignee: Gore Enterprise Holdings, Inc.Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta, Bradley E. Reis
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Patent number: 7326488Abstract: A diffusion membrane contains uncalcined polytetrafluoroethylene (PTFE), calcined PTFE and a conductive substance. An electrode has the diffusion layer (membrane) and a catalyst layer disposed thereon. A process for producing diffusion membranes comprises dispersing uncalcined PTFE, calcined PTFE and a conductive substance in a dispersion medium, removing the dispersion medium, adding a liquid lubricant followed by kneading, compressing the resultant kneaded product (preferably a rod-shaped preform) to expand the same into a membrane, and removing the liquid lubricant. The diffusion membrane preferably contains 1 to 30 wt % of the uncalcined PTFE and 5 to 30 wt % of the calcined PTFE. The conductive substance is desirably a combination of graphite and carbon black. The diffusion membrane is free from local variation in properties, has suitable mass producibility and can be produced inexpensively.Type: GrantFiled: December 13, 2002Date of Patent: February 5, 2008Assignee: Nippon Valqua Industries, Ltd.Inventors: Michinao Hayashi, Tohru Sugitani, Yoshitaka Asano
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Patent number: 7323506Abstract: A process for purifying a P(VDF-TrFE) copolymer to produce an improved high performance copolymer for pyroelectric conversion. Pellets of a P(VDF-TrFE) copolymer are dissolved in a solvent to form a solution. Subsequently, anhydrous ethanol is added to the solution to initiate copolymer gel precipitation, after which the solution is separated to obtain the gel precipitate, which is subsequently washed and dried. The resulting copolymer has fewer impurities and higher resistivity, thereby being suitable for use in applications such as pyroelectric converters. The purified copolymer also exhibits phase transition characteristics that allow for increased power output.Type: GrantFiled: December 2, 2004Date of Patent: January 29, 2008Assignee: Natural Resources CanadaInventors: Lia Kouchachvili, Michio Ikura
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Patent number: 7314646Abstract: A composite material having superior tribological properties includes a first polymer being a transfer film forming polymer and a second polymer mixed with the first polymer. The first polymer is at least 10 weight % of the composite and the composite provides a wear rate of <10?7 mm3/Nm and an average friction coefficient of said composite no more than 0.15. The first polymer can be PTFE and the second polymer a polyaryletherketone (e.g., PEEK). A method of forming composites includes the steps of providing a plurality of transfer film forming polymer particles and second polymer particles, and molding or extruding the particles at a temperature sufficient to allow softening and mobilization of at least one of the transfer film forming polymer particles and the plurality of strengthening phase polymer particles to form an interconnected network, wherein the composite formed provides a wear rate of <10?7 mm3/Nm.Type: GrantFiled: August 9, 2004Date of Patent: January 1, 2008Assignee: University of Florida Research Foundation, Inc.Inventors: Wallace Gregory Sawyer, David Lawrence Burris
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Patent number: 7314898Abstract: The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter.Type: GrantFiled: December 29, 2004Date of Patent: January 1, 2008Assignee: 3M Innovative Properties CompanyInventors: James W. Downing, Jr., Kenji Nagai, Makoto Nagase, Katsuhiko Nakazato
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Patent number: 7294668Abstract: An aqueous non-melt processible polytetrafluoroethylene dispersion having non-melt processible polytetrafluoroethylene particles in an amount of 30 to 70% by weight and an amount of non-ionic surfactant between 2 and 15% by weight based on the weight of polytetrafluoroethylene solids. The dispersion is free of fluorinated surfactant or contains fluorinated surfactant in amounts of not more than 200 ppm based on the amount of polytetrafluoroethylene solids. At least part of the non-melt processible polytetrafluoroethylene particles comprise an effective amount of ionic end groups in the polytetrafluoroethylene polymer chains.Type: GrantFiled: February 7, 2006Date of Patent: November 13, 2007Assignee: 3M Innovative Properties CompanyInventors: Tilman Zipplies, Klaus Hintzer, Michael C. Dadaias, Gernot Loehr
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Patent number: 7291678Abstract: The present invention provides a fluororesin composition, which is excellent in moldability and crack resistance, a process for preparing the composition and a cable evenly coated with the composition. Specifically, the present invention provides a fluororesin composition wherein polytetrafluoroethylene is compounded to a terpolymer comprising tetrafluoroethylene, hexafluoropropylene and perfluoroalkyl vinylether. Also, the present invention provides a process for preparing the composition which comprises kneading with a multi-screw kneader. Furthermore, the present invention provides a cable which is coated with the resin.Type: GrantFiled: December 18, 2006Date of Patent: November 6, 2007Assignee: Daikin Industries, Ltd.Inventors: Masayuki Namimatsu, Yoshiyuki Hiraga, Yoshiyuki Takase, Tadahiro Yabu
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Patent number: 7285585Abstract: This invention provides processes for isolating particles from an emulsion including the steps of: (a) forming an emulsion having a solid component having a population of particles, a liquid component, and a first ionic forming compound, wherein the presence of the first ionic forming compound in the emulsion does not result in the coagulation of the population of particles contained therein; (b) obtaining a composition having a second ionic forming compound which, by itself, is not sufficient to result in the coagulation of the population of particles contained in the emulsion; and (c) mixing the emulsion and the composition having the second ionic compound such that the first ionic forming compound reacts with the second ionic forming compound to form a coagulating agent which results in the coagulation of the population of particles. The invention also provides processes for preparing a polymer matrix system using the aforementioned process for isolating particles from an emulsion.Type: GrantFiled: August 8, 2003Date of Patent: October 23, 2007Assignee: Rohm and Haas CompanyInventors: Robert William Coyle, Morris Christopher Wills
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Patent number: 7252888Abstract: An aqueous elastomer coating composition and objects coated with this elastomer coating composition are described.Type: GrantFiled: January 22, 2001Date of Patent: August 7, 2007Assignee: Carl Freudenberg KGInventors: Ernst Osen, Richard Zuber, Jörg Schaupp, Volker Urbanski, Stefan Rink, Jürgen Henke
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Patent number: 7250455Abstract: The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target medium. Accordingly, the compositions of the present invention physically prevent the agglomeration or self-association of the characteristic use particles. Also disclosed are processes for manufacturing compositions that are capable of being dispersed in a target medium.Type: GrantFiled: September 29, 2004Date of Patent: July 31, 2007Assignee: Shamrock Technologies, Inc.Inventors: Charles A. Cody, Manshi Sui, Youssef Awad
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Patent number: 7241824Abstract: A sulphur-vulcanizable rubber composition usable for the manufacture of tires, based on at least: (A)—one diene elastomer selected from the group consisting of polybutadienes, natural rubber, synthetic polyisoprenes, butadiene copolymers, isoprene copolymers and mixtures of these elastomers (component A); (B)—a reinforcing white filler (component B); (C)—a coupling agent (white filler/diene elastomer) bearing at least one activated double ethylene bond (component C), with which there is associated: (D)—between 0.05 and 1 phr (parts by weight per hundred of elastomer) of a heat-triggered radical initiator (component D). The coupling agent is in particular an alkoxysilane of the family of alkoxy(C1–C4)-silylpropyls, in particular a trialkoxy(C1–C4)-silylpropyl methacrylate, in particular trimethoxy-silylpropyl methacrylate. Process for preparing such a rubber composition. Tire or semi-finished product, in particular tread, for a tire comprising a rubber composition according to the invention.Type: GrantFiled: June 24, 2002Date of Patent: July 10, 2007Assignee: Michelin Recherche et Technique S.A.Inventors: Jean-Luc Mangeret, Jean-Claude Tardivat
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Patent number: 7238753Abstract: The invention relates to a carpet comprising a stainproof-treated textile, wherein the carpet has stainproof ratio (%) of at least 30% as defined below: Stainproof ratio (%)=100×(?EN?ETn)/?EN ?EN: Color difference after stainproof test of untreated carpet; ?ETn: Color difference after stainproof test of carpet treated by the stainproof agent; n: the number of cleaning; cleaning is conducted according to AATCC-138, n?20.Type: GrantFiled: August 17, 2004Date of Patent: July 3, 2007Assignee: Daikin Industries, Ltd.Inventors: Fumihiko Yamaguchi, Masamichi Morita, Yasushi Nakamae, Hiroko Yano, Kazuyuki Satoh, Masato Ioki
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Patent number: 7238311Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: GrantFiled: May 5, 2006Date of Patent: July 3, 2007Assignee: Gore Enterprise Holdings, Inc.Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta
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Patent number: 7226969Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: GrantFiled: May 5, 2006Date of Patent: June 5, 2007Assignee: Gore Enterprise Holdings, Inc.Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta
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Patent number: 7202299Abstract: A fluoroelastomer composition, which comprises 100 parts by weight of vinylidene fluoride-perfluoro(methyl vinyl ether)-tetrafluoroethylene terpolymer or vinylidene fluoride-hexafluoropropene copolymer, and 10–50 parts by weight of liquid fluoroelastomer having a viscosity of 500 to 3,000 cps at 100° C., can be made cross-linkable or vulcanizable fluoroelastomer composition upon further addition of 0.5 to 5 parts by weight of an organic peroxide and 0.5 to 10 parts by weight of a polyfunctional unsaturated compound or further addition of 0.5 to 10 parts by weight of a polyol-based vulcanizing agent thereto. The fluoroelastomer composition can give a cross-linked or vulcanized product having a hardness (Durometer A) of not more than 50 and distinguished processability and compression set resistance characteristics.Type: GrantFiled: January 7, 2004Date of Patent: April 10, 2007Assignee: NOK CorporationInventors: Yoshifumi Kojima, Atsushi Koga, Kenichi Fujimoto
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Patent number: 7196133Abstract: A surface tension control agent for coating materials includes a fluorine-containing (meth)acrylate copolymer obtained by copolymerizing a fluorine-substituted alkyl (meth)acrylate monomer (A), an alkyl (meth)acrylate monomer (B), and a hydroxyl group- or ether group-containing alkyl (meth)acrylate monomer (C), such that the ratio of (A) to {(B)+(C)} is 3–60 parts by weight to 40–97 parts by weight.Type: GrantFiled: July 8, 2004Date of Patent: March 27, 2007Assignee: Kyoeisha Chemical Co., Ltd.Inventors: Motoe Hosoda, Kazuhiro Miyake, Hidehiro Ushio
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Patent number: 7189769Abstract: The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target medium. Accordingly, the compositions of the present invention physically prevent the agglomeration or self-association of the characteristic use particles. Also disclosed are processes for manufacturing compositions that are capable of being dispersed in a target medium.Type: GrantFiled: September 29, 2004Date of Patent: March 13, 2007Assignee: Shamrock Technologies, Inc.Inventors: Charles A. Cody, Manshi Sui, Youssef Awad
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Patent number: 7169854Abstract: The present invention provides a fluororesin composition, which is excellent in moldability and crack resistance, a process for preparing the composition and a cable evenly coated with the composition. Specifically, the present invention provides a fluororesin composition wherein polytetrafluoroethylene is compounded to a terpolymer comprising tetrafluoroethylene, hexafluoropropylene and perfluoroalkyl vinylether. Also, the present invention provides a process for preparing the composition which comprises kneading with a multi-screw kneader. Furthermore, the present invention provides a cable which is coated with the resin.Type: GrantFiled: September 10, 2002Date of Patent: January 30, 2007Assignee: Daikin Industries, Ltd.Inventors: Masayuki Namimatsu, Yoshiyuki Hiraga, Yoshiyuki Takase, Tadahiro Yabu
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Patent number: 7157550Abstract: A purification process of thermoprocessable tetrafluoroethylene (TFE) copolymers comprising the following steps: A) the polymer latex is transformed into gel form, under mechanical stirring, by addition of an acid electrolyte having pH values?2; B) washing of the polymer gel with aqueous solutions having pH from 1 to 7.Type: GrantFiled: March 3, 2004Date of Patent: January 2, 2007Assignee: Ausimont S.p.A.Inventors: Hua Wu, Vincenzo Arcella
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Patent number: 7135527Abstract: Processable rubber compositions contain a vulcanized fluorocarbon elastomer dispersed in a thermoplastic matrix comprising a fully fluorinated polymer and a partially fluorinated polymer. The processing temperature is below the melting point of the fully fluorinated polymer. The compositions are made by combining a curative, uncured fluorocarbon elastomer, a fully fluorinated thermoplastic, and a partially fluorinated thermoplastic material, and heating the mixture at a temperature and for a time sufficient to effect vulcanization of the elastomeric material, while mechanical energy is applied to mix the mixture during the heating step. Shaped articles such as seals, gaskets, O-rings, and hoses may be readily formed from the rubber compositions according to conventional thermoplastic processes such as blow molding, injection molding, and extrusion.Type: GrantFiled: March 30, 2004Date of Patent: November 14, 2006Assignee: Freudenberg-NOK General PartnershipInventor: Edward Hosung Park
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Patent number: 7125598Abstract: There is provided a fluorine-containing elastomer molded article which is obtained by irradiating the fluorine-containing elastomer molded article with a plasma and has a center line average roughness of not less than 0.65 ?m or a fluorine-containing elastomer molded article which is obtained by applying a resin coating layer on a fluorine-containing elastomer substrate, has a small peeling strength and a small etching rate at the irradiation of plasma and is excellent in detachability and whiteness. There is provided particularly a molded article suitable as various sealing materials for semiconductor production apparatuses.Type: GrantFiled: April 19, 2001Date of Patent: October 24, 2006Assignee: Daikin Industries, Ltd.Inventors: Takafumi Yamato, Katsuhiko Higashino, Hiroyuki Tanaka, Tsuyoshi Noguchi, Mitsuru Kishine
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Patent number: 7118801Abstract: A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.Type: GrantFiled: November 10, 2003Date of Patent: October 10, 2006Assignee: Gore Enterprise Holdings, Inc.Inventors: Cedomila Ristic-Lehmann, Brian Farnworth, Anit Dutta
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Patent number: 7109365Abstract: A process for solubilizing an organometallic compound in a fluorinated solvent to form an organometallic solution by adding and reacting a co-solubilizer having a partly fluorinated polymer, an organometallic compound, and a fluorinated solvent, and the co-solubilizer has the ability to cause the organometallic compound to become miscible in a fluorinated solvent, and further, the co-solubilizer is not a catalyst and is present in the final organometallic solution.Type: GrantFiled: November 25, 2003Date of Patent: September 19, 2006Assignee: Xerox CorporationInventors: David J. Gervasi, Santokh S. Badesha, John W. Spiewak
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Patent number: 7078101Abstract: The present invention is a new class of terpolymers for use as high strain electrostrictive polymer films. More particularly, the invention is a class of electrostrictive terpolymers comprising vinylidene fluoride (VDF), trifluoroethylene (TrFE) and at least one monomer having at least one halogen atom side group. The monomer is preferably an ethylene-based monomer and preferably selected to favor gauche-type linkage along the polymer backbone. The halogen atom side group is preferably large enough to move or cause adjacent polymer chains to be farther apart from or away from each other than in the absence of such side group, but not so large that it would inhibit polymer crystallites from forming. The monomer is preferably a chloro-monomer such as chlorofluoroethylene (CFE). The chlorofluoroethylene (CFE) is preferably 1-chloro-2-fluoroethylene or 1-chloro-1-fluoroethylene. The chlorofluoroethylene (CFE) favors gauche-type linkage which favors high electrostrictive strains.Type: GrantFiled: November 21, 2003Date of Patent: July 18, 2006Assignee: The United States of America as represented by the Secretary of the NavyInventors: Thomas S. Ramotowski, George J. Kavarnos, Qiming Zhang
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Patent number: 7067580Abstract: A flexible thermal control composite comprising a natural or synthetic polymer and an endotherm dispersed, distributed and suspended within said natural or synthetic polymer i.e. “P”olymer “C”ontaining an “E”ndothermic “A”gent (PCEA). The PCEA can be formed into thin and thick films. It can be drawn, molded, extruded and spun into fibers or all dimensions. It can be formed and chopped into PCEA mulch. Irrespective its final form, the PCEA can be used in insulating, thermoprotecting, heat absorbing applications on the one hand, and heat maintenance applications of all types on the other.Type: GrantFiled: April 26, 2004Date of Patent: June 27, 2006Inventor: Claude Q. C. Hayes
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Patent number: 7060772Abstract: A fluoropolymer having a melting point of at least 160° C. is provided wherein the fluoropolymer is derived from tetrafluoroethylene as the major component, one or more perfluoro vinyl ethers as the minor component, the perfluoro vinyl ether having the formula CF2?CFO(CF2)nORf wherein n is from 2 to 6 and Rf is a perfluoroalkyl group having 1 to 6 carbon atoms, and optionally a perfluoro alkyl vinyl ether having from 1 to 5 carbon atoms in the alkyl radical.Type: GrantFiled: September 20, 2001Date of Patent: June 13, 2006Assignee: 3M Innovative Properties CompanyInventors: Klaus Hintzer, Ralph Kaulbach, Friedrich Kloos, Werner Schwertfeger
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Patent number: 7054530Abstract: A PVDF-containing LC Cable wherein the Cable contains no more than about 50 weight % PVDF, based on the weight of the Cable, is provided.Type: GrantFiled: January 12, 2004Date of Patent: May 30, 2006Assignee: Arkema Inc.Inventors: James J. Henry, Gregory S. O'Brien, Richard J. Rockosi
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Patent number: 7045584Abstract: The present invention relates to a process for the manufacture of PVDF homopolymer or copolymer by radical polymerization of vinylidene fluoride (VDF), and optionally of a comonomer, in aqueous dispersion and in the presence of a transfer agent, of a persulphate as radical initiator, optionally of a surface-active additive and optionally of a paraffin wax, in which: a) an aqueous PVDF dispersion is obtained, b) the dispersion from stage a) is washed, optionally after having been coagulated, to lower the proportion of possible surfactant in the PVDF to below 300 ppm, this proportion being expressed with respect to the dried PVDF, c) sodium acetate and optionally a potassium alkylsulphonate are added to the dispersion washed in b), d) the dispersion from stage c) is dried by any means to recover the PVDF powder comprising sodium acetate and optionally a potassium alkylsulphonate.Type: GrantFiled: March 2, 2004Date of Patent: May 16, 2006Assignee: ArkemaInventors: Patrick Kappler, Véronique Gauthe
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Patent number: 7041728Abstract: The present invention provides a method of making an aqueous dispersion of non-melt processible polytetrafluoroethylene, the method comprising: (a) an aqueous emulsion polymerization of an amount of tetrafluoroethylene to produce a final amount of polytetrafluoroethylene solids and optionally up to 1% by weight based on the amount of tetrafluoroethylene of a perfluorinated comonomer, wherein said aqueous emulsion polymerization is initiated with a free radical initiator and the polymerization is carried out in the presence of a fluorinated surfactant, and wherein before completing the feeding of said amount of tetrafluoroethylene but after feeding at least 80% by weight of said amount of tetrafluoroethylene, free radicals capable of introducing ionic end groups or precursors thereof in the polytetrafluoroethylene polymer are caused to be formed at a rate that without counter measures would cause an increase in the polymerization rate of at least 20%; (b) reducing the amount of fluorinated surfactant in the thType: GrantFiled: October 12, 2004Date of Patent: May 9, 2006Assignee: 3M Innovative Properties CompanyInventors: Tilman Zipplies, Klaus Hintzer, Michael C. Dadalas, Gernot Loehr
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Patent number: 7015275Abstract: An aqueous water- and oil-repellent dispersion containing: (A) a homopolymer or copolymer containing at least one polymerizable compound having a perfluoroalkyl or perfluoroalkenyl group and an acrylate or methacrylate group, or a copolymer containing said polymerizable compound and another compound copolymerizable therewith, (B) a surfactant comprising a cationic surfactant and a nonionic surfactant comprising an alkylene oxide adduct of a higher aliphatic secondary alcohol, and (C) a high flash-point organic solvent, has durable water- and oil-repellency and excellent storage stability.Type: GrantFiled: April 4, 2000Date of Patent: March 21, 2006Assignee: Daikin Industries, Ltd.Inventors: Tsukasa Aga, Masahiro Miyahara, Masaki Fukumori, Ryosuke Hara
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Patent number: 7012122Abstract: The present invention relates to a process for the manufacture of PVDF homopolymer or copolymer by radical polymerization of vinylidene fluoride (VDF), and optionally of a comonomer, in aqueous dispersion and in the presence of a transfer agent, of a persulphate as radical initiator, optionally of a surface-active additive and optionally of a paraffin wax, in which: a) sodium acetate is added, either at the start of or during or after the polymerization, b) a potassium alkylsulphonate is optionally added after the polymerization, c) an aqueous PVDF dispersion is obtained, d) the PVDF is collected by atomizing the dispersion obtained in c) with air at a temperature of between 120 and 220° C., the aqueous dispersion obtained in c) not being washed with water before atomizing.Type: GrantFiled: March 2, 2004Date of Patent: March 14, 2006Assignee: ArkemaInventors: Patrick Kappler, Veronique Gauthe
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Patent number: 6995206Abstract: The present invention is drawn to a method of generating functionalized latex particulates in a colloidal suspension. The method can comprise steps of protecting functional groups present on polymerizable monomers with photo labile groups to form protected monomers; polymerizing the protected monomers to form a protected polymer; and exposing the protected polymer to a wavelength of light that removes the photo labile groups from the functional groups, thereby forming the functionalized latex particulates. These latex particulates can be used in a wide variety of applications, including in ink-jet ink printing applications.Type: GrantFiled: July 28, 2003Date of Patent: February 7, 2006Assignee: Hewlett-Packard Development Company, L.P.Inventors: Zhang-Lin Zhou, Sivapackia Ganapathiappan
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Patent number: 6984697Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP. These fluorothermoplastic compositions have a flex life that fits the equation: log(flex life cycles)?0.71+4.0*(MFI(?0.294)), a method of making fluorothermoplastic compositions, a method of improving stress crack resistance, and fluorothermoplastic articles.Type: GrantFiled: October 7, 2003Date of Patent: January 10, 2006Assignee: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Patent number: 6914093Abstract: Polyamideimide coating compositions for magnet wire which exhibit solvent or varnish-induced craze resistance. The polyamideimide compositions include a compound selected from the group consisting of diacid compounds, trimellitic anhydrides, benzophenonetetracarcoxylic anhydrides and mixtures thereof, a diisocyanate compound, dihydroxyl compound, a trihydroxyl compound, a fluoropolymer, and a mineral filler.Type: GrantFiled: October 16, 2001Date of Patent: July 5, 2005Assignee: Phelps Dodge Industries, Inc.Inventor: James J. Xu
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Patent number: 6911489Abstract: PTFE pellets with good bulk density, homogeneity, and flowability properties may be obtained by: (1) wetting a PTFE powder with a solvent, to obtain a wetted PTFE powder; (2) forming the wetted PTFE powder into agglomerated pellets of PTFE; and (3) drying the agglomerated pellets of PTFE pellets, in which the drying of the agglomerated pellets of PTFE is carried out in a fluidized bed drier. The PTFE pellets so obtained may be used to prepare molded articles of PTFE.Type: GrantFiled: June 10, 2002Date of Patent: June 28, 2005Assignee: Asahi Glass Fluoropolymers USA, Inc.Inventors: Pamela J. Baron, Gary Eckrote, Tonya James, Ronald Partridge, Timothy C. Duzick
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Patent number: 6911488Abstract: The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target medium. Accordingly, the compositions of the present invention physically prevent the agglomeration or self-association of the characteristic use particles. Also disclosed are processes for manufacturing compositions that are capable of being dispersed in a target medium.Type: GrantFiled: June 21, 2002Date of Patent: June 28, 2005Assignee: Shamrock Technologies, Inc.Inventors: Charles A. Cody, Manshi Sui, Youssef Awad
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Patent number: 6884827Abstract: A seal ring seals operating oil hermetically and is attached to an annular seal ring groove provided on an outer circumference of a shaft member. The seal ring comprises fluororesin, metal powder having a hardness equal to or more than that of any of a side surface of the seal ring groove serving as a sliding partner and an inner circumferential surface of a housing engaged relatively rotatable with the outer circumference of the shaft member, and modified fluororesin formed by irradiating an ionizing radiation in a range from 1 kGy to 10 MGy inclusive in a state of being heated up to a melting point thereof or higher under an inert gas atmosphere with an oxygen partial pressure of 1.33 kPa or less.Type: GrantFiled: April 1, 2003Date of Patent: April 26, 2005Assignees: Nissan Motor Co., Ltd., Hitachi Cable Ltd.Inventors: Tomohito Ota, Tomihito Hashimoto, Yasuaki Yamamoto, Hiroo Kusano
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Patent number: 6852416Abstract: There are disclosed new composite materials having improved electric field induced strain levels, improved electric constants, and having advantageous mechanical properties for use in electrical devices.Type: GrantFiled: April 12, 2002Date of Patent: February 8, 2005Assignee: The Penn State Research FoundationInventors: Qiming Zhang, Zhongyang Cheng, Haisheng Xu
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Patent number: RE40519Abstract: A conductive fluoro-resin composition of the addition reaction curing type is provided comprising (A) a reactive fluorinated polyether compound comprising fluorinated polyether units and having at least two aliphatic unsaturated hydrocarbon radicals in a molecule, (B) a compound having at least two hydrogen atoms each directly attached to a silicon atom, (C) a platinum group metal catalyst, and (D) silver particles. The composition cures into rubbery parts having improved heat resistance, weather resistance and solvent resistance and optionally forming firm bonds to various substrates.Type: GrantFiled: September 19, 2002Date of Patent: September 23, 2008Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hironao Fujiki, Hiroyasu Hara, Kenichi Fukuda