Contains Only Carbon And Fluorine Atoms Patents (Class 526/254)
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Patent number: 11033027Abstract: A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture. A process of preparing a surface having a surface energy of between about 20 and about 30 mJ/m2, comprising applying such a copolymer to a support. A method of preventing accumulation of ice on an article of manufacture, comprising applying such a copolymer to an article of manufacture. A method of preparing a polymer, comprising a step of adding trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymer as a polymer processing additive/aid to said polymer.Type: GrantFiled: August 22, 2018Date of Patent: June 15, 2021Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Changqing Lu, Andrew J. Poss, Rajiv R. Singh, David Nalewajek, Cheryl Cantion
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Patent number: 11015004Abstract: The invention pertains to a fluoroelastomer composition comprising: (a) a vinylidene fluoride-based fluoroelastomer [fluoroelastomer (A)] comprising recurring units derived from vinylidene fluoride (VDF) and recurring units derived from at least one additional (per)fluorinated monomer; said fluoroelastomer (A): —possessing a polydispersity index (IMWD) of between 1.5 and 3.Type: GrantFiled: September 16, 2016Date of Patent: May 25, 2021Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.Inventors: Marco Dossi, Marco Avataneo, Terry Michael Kitchens
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Patent number: 10788670Abstract: Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element embedded within the lens and covering a portion of the viewable area of the lens. The lens can be manufactured by filling a cavity in a lens blank with a photosensitive material and exposing the photosensitive material to a number of light beams to form the HOE.Type: GrantFiled: July 1, 2016Date of Patent: September 29, 2020Assignee: INTEL CORPORATIONInventors: Andrew G. Wade, Mickael Guillaumee, David Ziegler, Volker Zagolla
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Patent number: 9566685Abstract: This invention provides a polishing composition comprising an abrasive, a water-soluble polymer and water. The water-soluble polymer comprises a polymer A having an adsorption ratio of lower than 5% and a polymer B having an adsorption ratio of 5% or higher, but lower than 95% based on a prescribed adsorption ratio measurement. Herein, the polymer B is selected from polymers excluding hydroxyethyl celluloses.Type: GrantFiled: February 14, 2014Date of Patent: February 14, 2017Assignee: FUJIMI INCORPORATEDInventors: Kohsuke Tsuchiya, Hisanori Tansho
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Patent number: 9156985Abstract: A fluororubber composition comprising 100 parts by weight of a peroxide-crosslinkable tetrafluoroethylene-vinylidene fluoride-hexafluoropropene ternary copolymer rubber having a fluorine content of 64 wt. % or more, (A) 5 to 90 parts by weight of carbon black having a specific surface area of 5 to 20 m2/g, (B) 5 to 40 parts by weight of a fine bituminous powder, (C) at least one of 1 to 20 parts by weight of hydrophilicity-imparted talc and/or 1 to 30 parts by weight of hydrophilicity-imparted clay, and (D) 0.5 to 6 parts by weight of an organic peroxide; the fluororubber composition being used as a molding material for fuel oil sealing materials to be in contact with fuel oil. The fluororubber composition provides a sealing materials having excellent metal corrosion resistance, without compounding an acid acceptor comprising a metal oxide.Type: GrantFiled: April 2, 2012Date of Patent: October 13, 2015Assignee: NOK CorporationInventors: Takuya Yamanaka, Kenichi Uchida
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Patent number: 9012580Abstract: A tetrafluoroethylene/hexafluoropropylene copolymer has improved moldability in melt extrusion molding, especially with significant reduction of defects in high-speed extrusion coating of an electrical wire. The tetrafluoroethylene/hexafluoropropylene copolymer is obtained by polymerization of at least tetrafluoroethylene and hexafluoropropylene selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and a third monomer without mixing with the resin which has the melting point with the difference of 20 degree C. and more from the melting point of the tetrafluoroethylene/hexafluoropropylene copolymer; and has a complex viscosity of from 2.0×I03 to 10.0×I03 Pa*s and a storage modulus of from 0.1 to 3.5 Pa*s in melt viscoelasticity measurement under the condition of atmosphere temperature of 310 degree C. and angular frequency of 0.01 radian/second. The tetrafluoroethylene/hexafluoropropylene copolymer can be used in an electrical wire as a coating on a conductive core.Type: GrantFiled: February 9, 2009Date of Patent: April 21, 2015Assignees: Daikin Industries, Ltd., Daikin America, Inc.Inventors: Takahiro Kitahara, Tadaharu Isaka, Ryouichi Fukagawa, Keizou Shiotsuki
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Patent number: 8980963Abstract: The invention relates to an article that has been obtained by the melt-process recycling of one or more multi-layer articles, where the multi-layer articles are composed of at least one melt-processible polyvinylidene fluoride layer. The composition of the invention is a compatible blend of the different layers from the multi-layer articles. The other layers of the multi-layer articles are also melt-processible, and include one or more layers chosen from: a) a melt-processible fluoropolymer of a different composition, b) a non-fluoropolymer, and c) a barrier layer. The composition is useful for forming an article in a melt-process operation. The composition may be used by itself, may be blended with other virgin or recycled materials, or may be used at low levels with melt-processible polymers as a process aid.Type: GrantFiled: July 29, 2014Date of Patent: March 17, 2015Assignee: Arkema Inc.Inventors: Saeid Zerafati, Sean M. Stabler, William J. Hartzel
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Patent number: 8971707Abstract: Use in LAN cable applications, as materials for the coating of the primary cable and for the external jacket, of TFE thermoprocessable perfluoropolymers comprising perfluoroalkylvinylethers in the following amounts, expressed as percent by weight on the total of the monomers: a) 0-5.5% of perfluoromethylvinylether (PMVE); b) 0.4-4.5% of perfluoroethylvinylether (PEVE) and/or perfluoropropylvinylether (PPVE); when a) is present, then a)+b) ranges from 1.5% to 5.5% by weight on the total of the monomers; optionally c) 0-6% of hexafluoropropene (HFP); the TFE amount being the complement to 100% by weight.Type: GrantFiled: February 20, 2007Date of Patent: March 3, 2015Assignee: Solvay Solexis S.p.A.Inventors: Pasqua Colaianna, Giulio Brinati, Aldo Sanguineti
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Patent number: 8969500Abstract: The present disclosure describes fluoropolymers having long chain branches and methods of making these fluoropolymers. These fluoropolymers may have improved melt processing properties. Shaped articles containing these fluoropolymers are also provided.Type: GrantFiled: April 24, 2008Date of Patent: March 3, 2015Assignee: 3M Innovative Properties CompanyInventors: Klaus Hintzer, Harald Kaspar
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Patent number: 8895681Abstract: Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.Type: GrantFiled: December 21, 2006Date of Patent: November 25, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Jon Lee Howell, Clay Woodward Jones, Robert Clayton Wheland
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Patent number: 8883313Abstract: The present invention provides a polytetrafluoroethylene powder having moldability/processability as well as electrical characteristics in microwave bands. The present invention is a modified polytetrafluoroethylene powder which has (1) a dielectric loss tangent at 12 GHz of not higher than 2.0×10?4 and (2) a cylinder extrusion pressure of not higher than 45 MPa at a reduction ratio of 1600.Type: GrantFiled: April 4, 2005Date of Patent: November 11, 2014Assignee: Daikin Industries, Ltd.Inventors: Yoshinori Nanba, Yasuhiko Sawada, Shunji Kasai, Shuji Tagashira, Makoto Ono, Takahiro Taira, Hiroyuki Yoshimoto
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Publication number: 20140296438Abstract: The invention relates to a polyvinylidene fluoride polymer having an ultra-high molecular weight, and unexpected physical properties. The ultra-high molecular weight polymer is clear, has a lower melting point, reduced crystallinity, excellent impact resistance, and a high elongation at the yield point. The ultra-high molecular weight polyvinylidene fluoride can be alone, or blended with other polymers, in final applications and articles.Type: ApplicationFiled: June 11, 2014Publication date: October 2, 2014Inventor: Ramin Amin-Sanayei
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Patent number: 8835551Abstract: Iodine containing amorphous fluoropolymers having at least one fluoropolymer with a cure site, where the fluoropolymer has a Mooney viscosity of 2 or less (ML 1+10) at 100° C. according to ASTM D1646, and a peel strength to a roll mill of 10 dN/cm or less and methods for making such iodine containing amorphous fluoropolymers are described. Articles derived from the cured product of such iodine containing amorphous fluoropolymers are also described. Solutions, dispersions and coatings derived from such iodine containing amorphous fluoropolymers are also described.Type: GrantFiled: September 11, 2008Date of Patent: September 16, 2014Assignee: 3M Innovative Properties CompanyInventors: Tatsuo Fukushi, Peter J. Scott, Cynthia N. Ferguson, Werner M. A. Grootaert, Denis Duchesne, Yeng Moua, Larry A. Last, Terri A. Shefelbine, Luke M. B. Rodgers
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Patent number: 8785580Abstract: The invention relates to a polyvinylidene fluoride polymer having an ultra-high molecular weight, and unexpected physical properties. The ultra-high molecular weight polymer is clear, has a lower melting point, reduced crystallinity, excellent impact resistance, and a high elongation at the yield point. The ultra-high molecular weight polyvinylidene fluoride can be alone, or blended with other polymers, in final applications and articles.Type: GrantFiled: June 26, 2007Date of Patent: July 22, 2014Assignee: Arkema Inc.Inventor: Ramin Amin-Sanayei
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Patent number: 8697822Abstract: The present invention relates to a method for the polymerization in an aqueous medium of monomers, and especially of fluoromonomers, using non-fluorinated surfactants; and the fluoropolymers formed therefrom. Specifically, the method of the polymerization uses one or more non-fluorinated surfactants selected from the group consisting of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid, and salts thereof. Additionally, the use of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid as surfactants in aqueous free radical polymerization is also novel.Type: GrantFiled: June 26, 2006Date of Patent: April 15, 2014Assignee: Arkema Inc.Inventors: Mehdi Durali, Lotfi Hedhli, Ramin Amin-Sanayei
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Publication number: 20140080987Abstract: A fluoroelastomer comprising a copolymer of fluoroolefin monomers selected from one or more of the group consisting of 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene and 1-chloro-3,3,3-trifluoropropene, and ethylenically unsaturated co-monomers; wherein the fluoroelastomer has a glass transition temperature (Tg) of from about ?60° C. to about 53° C. A process of making the fluoroelastomer.Type: ApplicationFiled: March 7, 2013Publication date: March 20, 2014Applicant: HONEYWELL INTERNATIONAL INC.Inventor: Honeywell International Inc.
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Patent number: 8674042Abstract: The present invention relates to a partially-crystalline copolymer comprising tetrafluoroethylene, hexafluoropropylene in an amount corresponding to HFPI of from about 2.8 to 5.3, and preferably from about 0.2% to 3% by weight of perfluoro(alkyl vinyl ether), said copolymer having less than about 50 ppm alkali metal ion, having a melt flow rate of within the range of about 30±3 g/10 min, and having no more than about 50 unstable endgroups/106 carbon atoms and which can be extruded at high speed onto conductor over a broad polymer melt temperature range to give insulated wire of high quality.Type: GrantFiled: November 10, 2011Date of Patent: March 18, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Thomas Robert Earnest, Jr., Daniel A. Favereau, Niall D. McKee, Patricia A. Tooley
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Patent number: 8658740Abstract: The present invention relates to the reduction of oligomer content of melt-processible fluoropolymer so that the fluoropolymer has at least 25 ppm less oligomer than the as-polymerized fluoropolymer.Type: GrantFiled: May 21, 2008Date of Patent: February 25, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Gregory Allen Chapman, David E. Bidstrup
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Patent number: 8637144Abstract: A process for the polymerization of a true tetrafluoroethylene (TFE) copolymer of the fine powder type is provided, wherein the copolymer contains polymerized comonomer units of at least one comonomer other than TFE in concentrations of at least or exceeding 1.0 weight percent, and which can exceed 5.0 weight percent, wherein the copolymer is expandable, that is, the copolymer may be expanded to produce strong, useful, expanded TFE copolymeric articles having a microstructure of nodes interconnected by fibrils.Type: GrantFiled: October 4, 2007Date of Patent: January 28, 2014Assignee: W. L. Gore & Associates, Inc.Inventor: Lawrence A. Ford
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Patent number: 8557939Abstract: To provide an antifouling composition which is a fluorine-type antifouling composition using a short chain perfluoroalkyl group and which is excellent in antifouling properties and water/oil repellency and presents good durability against washing. An antifouling composition comprising a fluorocopolymer which comprises from 30 to 65 mass % of polymerized units (a) having a C1-6 perfluoroalkyl group, from 1 to 67 mass % of polymerized units (b1) having —(C2H4O)— and from 3 to 34 mass % of polymerized units (b2) having —(C4H8O)—, wherein the content of —(C2H4O)— is from 20 to 65 mass %, and the content of —(C4H8O)— is from 2 to 13 mass %.Type: GrantFiled: November 20, 2009Date of Patent: October 15, 2013Assignee: Asahi Glass Company, LimitedInventors: Hiroyuki Hara, Shuichiro Sugimoto, Takao Hirono, Takashige Maekawa
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Publication number: 20130230645Abstract: A method of producing a fluororesin composition includes copolymerizing at least tetrafluoroethylene with hexafluoropropylene so that a melt flow rate at 372 degree C. of the copolymer formed in the copolymerization changes from 0.05-5.0 grams/10 minutes to 10-60 grams/10 minutes. The tetrafluoroethylene/hexafluoropropylene copolymer can be used as a coating on an electrical wire.Type: ApplicationFiled: April 3, 2013Publication date: September 5, 2013Applicants: Daikin Industries, Ltd., Daikin America, Inc.Inventors: Takahiro KITAHARA, Tadaharu ISAKA, Ryouichi FUKAGAWA, Keizou SHIOTSUKI
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Publication number: 20130178593Abstract: Disclosed is a melt-flowable fluoropolymer comprising repeating units arising from (a) tetrafluoroethylene and (b) a monomer having at least one functional group and a polymerizable carbon-carbon double bond, wherein the sum of the weight percent of (a) and (b) comprises at least about 99 weight percent of all repeating units comprising the melt-flowable fluoropolymer.Type: ApplicationFiled: February 28, 2013Publication date: July 11, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventor: E I DU PONT DE NEMOURS AND COMPANY
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Patent number: 8415070Abstract: Ionic polymers are made from selected partially fluorinated dienes, in which the repeat units are cycloaliphatic. The polymers are formed into membranes.Type: GrantFiled: December 13, 2007Date of Patent: April 9, 2013Assignee: E I du Pont de Nemours and CompanyInventor: Amy Qi Han
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Publication number: 20130079466Abstract: Disclosed is a fluorine-containing polymer aqueous dispersion in which a fluorine-containing polymer is dispersed using, as an emulsifier, a polyfluoroalkylphosphonic acid salt represented by the general formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cP(O)(OM1)(OM2)??[I], wherein M1 is a hydrogen atom, an alkali metal, an ammonium base, or an organic amine base, M2 is an alkali metal, an ammonium base, or an organic amine base, n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3. This fluorine-containing polymer aqueous dispersion uses a polyfluoroalkylphosphonic acid salt with a low bioaccumulation potential as an emulsifier, and has excellent mechanical stability.Type: ApplicationFiled: May 13, 2011Publication date: March 28, 2013Applicant: UNIMATEC CO., LTD.Inventors: Yoshiyama Kaneumi, Daisuke Murai
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Patent number: 8394905Abstract: Disclosed herein is a telechelic diacrylate fluoropolymer and a process for manufacture of the fluoropolymer. The diacrylate copolymer is of formula CH2?CR?COO—(CH2)n—R—(CH2)n—OOCCR??CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R? is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons.Type: GrantFiled: July 16, 2009Date of Patent: March 12, 2013Assignees: E I du Pont de Nemours and Company, Le Centre National de la Recherche ScienceInventors: Ming-Hong Hung, Bruno Ameduri, Georgi Kostov
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Patent number: 8394870Abstract: Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH2?CR?COO—(CH2)n—R—(CH2)n—OOCR??CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R? is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons. The source of the free radicals may be a photoinitiator or an organic peroxide.Type: GrantFiled: July 16, 2009Date of Patent: March 12, 2013Assignees: E.I. du Pont de Nemours and Company, Le Centre National de la Recherche ScienceInventors: Ming-Hong Hung, Bruno Ameduri, Georgi Kostov
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Publication number: 20130059101Abstract: Disclosed is a melt processible semicrystalline fluoropolymer comprising: (a) about 0.001 to about 25 weight percent of repeating units arising from a hydrocarbon monomer having a functional group and a polymerizable carbon-carbon double bond, wherein said functional group is at least one selected from the group consisting of amine, amide, hydroxyl, phosphonate, sulfonate, nitrile, boronate and epoxidehydrocarbon monomer; and (b) the remaining weight percent of repeating units arising from tetrafluoroethylene. This melt processible semicrystalline fluoropolymer is impermeable to fuels and is useful as a lining for petroleum fuel tubing, as well as chemical resistance coating for, or adhesive between, perfluoropolymer and other polymers, metals and inorganics.Type: ApplicationFiled: October 15, 2012Publication date: March 7, 2013Applicant: E I DU PONT DE NEMOURS AMD COMPANYInventors: Ralph Munson Aten, Sharon Ann Libert, Craig King Hennessey
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Patent number: 8378063Abstract: A process for producing fluoropolymer particles includes preparing a solution/dispersion containing fluoropolymer dissolved/dispersed in a first solvent such that the swelling of fluoropolymer by the first solvent is from 50 to 1,200%, and mixing the solution/dispersion with a second solvent such that fluoropolymer forms particles and the swelling of fluoropolymer by the mixture of the first and second solvents is from 0 to 100%. WC/WB is in the range of from 1 to 5, WB represents mass of the first solvent, WC/ represents mass of the second solvent, WC/WB represents a ratio of the mass of the second solvent to the mass of the first solvent. SBC/SB is at most 0.5. SBC represents the swelling by the mixture of the first and second solvents, SB represents the swelling by the first solvent, and SBC/SB represents a ratio of the swelling by the mixture to the swelling by the first solvent.Type: GrantFiled: December 22, 2009Date of Patent: February 19, 2013Assignee: Asahi Glass Company, LimitedInventors: Susumu Saito, Tetsuji Shimohira, Takashi Saeki, Junichi Tayanagi
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Patent number: 8362167Abstract: The invention provides a compound and tautomeric forms thereof having the formula: wherein Rf1 is selected from the group consisting of hydrogen, a straight chain, branched secondary or branched tertiary C1-C20 perfluoroalkyl group optionally containing ether or thioether linkages and C1-C10 perfluoroalicyclic group optionally containing ether or thioether groups; Rf2 is a straight or branched C1-C20 perfluoroalkylene group optionally substituted with ether and thiother linkages; and X is selected from the group consisting of fluorine and The invention also provides perfluoroelastomeric compositions cured with the perfluoroimidoylamidines of the invention as well as combinations of perfluoroimidoylamidines and other curing agents.Type: GrantFiled: July 10, 2007Date of Patent: January 29, 2013Assignee: LODESTAR Inc.Inventors: Gubanov Viktor Andreevich, Kollar Alexander Nikolaevich, Volkova Margarita Alekseevna, Tsipkina Irina Mikhailovna
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Publication number: 20120245238Abstract: The invention relates to a composition that has been obtained by the melt-process recycling of one or more multi-layer articles, where the multi-layer articles are composed of at least one melt-processible fluoropolymer layer. The composition of the invention is a compatible blend of the different layers from the multi-layer articles. The other layers of the multi-layer articles are also melt-processible, and include one or more layers chosen from: a) a melt-processible fluoropolymer of a different composition, b) a non-fluoropolymer, and c) a barrier layer. The composition is useful for forming an article in a melt-process operation. The composition may be used by itself, may be blended with other virgin or recycled materials, or may be used at low levels with melt-processible polymers as a process aid.Type: ApplicationFiled: September 23, 2010Publication date: September 27, 2012Applicant: Arkema Inc.Inventors: Saeid Zerafati, Sean M. Stabler, William J. Hartzel
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Patent number: 8226876Abstract: Disclosed herein is a method to produce a semi-crystalline fluoro-polymer film. A semi-crystalline fluoro-polymer material is used. The material is compressed to produce the film. During compression, the material is maintained at a temperature below the melting point of the material. The compression step can be cycled to allow cooling of the material between compression stages. Alternative methods are provided for compressing the material with a co-extrusion substrate, extruding the material and utilizing mandrel expansion for the material.Type: GrantFiled: May 9, 2006Date of Patent: July 24, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventors: O. Richard Hughes, Alfred R. Austen
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Patent number: 8217126Abstract: Disclosed herein are novel fluoroolefins of formula Rf—O—(CF2CF2)n(CH2CF2)m—CH?CH2, wherein n is 1 or 2, m is 0 or 1 and Rf is a C1-C8 fluoroalkyl or fluoroalkoxy group. The fluoroolefins may be oxidized to manufacture fluorinated carboxylic acids. Also disclosed are fluoropolymers comprising copolymerized units of the fluoroolefins of the invention and at least one other fluoromonomer.Type: GrantFiled: October 14, 2008Date of Patent: July 10, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Ming-Hong Hung, Sheng Peng
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Patent number: 8124699Abstract: The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.Type: GrantFiled: August 4, 2006Date of Patent: February 28, 2012Assignee: Arkema Inc.Inventors: Mehdi Durali, Lotfi Hedhli, Roice Wille
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Publication number: 20120037398Abstract: The present invention provides an ethylene/tetrafluoroethylene copolymer showing good heat resistance and good crack resistance even in a high temperature environment. The present invention is an ethylene/tetrafluoroethylene copolymer, comprising: copolymerization units derived from ethylene; tetrafluoroethylene; and a fluorine-containing vinyl monomer represented by general formula: CH2=CH?Rf in the formula, Rf representing a perfluoroalkyl group containing four or more carbon atoms, a fluorine-containing vinyl monomer content being 0.8 to 2.5 mol % to a total amount of all monomers, an ethylene/tetrafluoroethylene molar ratio being 33.0/67.0 to 44.0/56.0, a CH index being 1.40 or less, a melting point being 230° C. or higher, and a melt flow rate being 40 (g/10 minutes) or less.Type: ApplicationFiled: April 20, 2010Publication date: February 16, 2012Applicant: Daikin Industries Ltd.Inventors: Takayuki Hirao, Kenji Ichikawa, Shigehito Sagisaka, Yumi Nakano
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Publication number: 20120015124Abstract: An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E?, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.Type: ApplicationFiled: March 16, 2010Publication date: January 19, 2012Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takahiro Kitahara, Takuma Kawabe
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Patent number: 8076431Abstract: The present invention relates to a partially-crystalline copolymer comprising tetrafluoroethylene, hexafluoropropylene in an amount corresponding to hexafluoropropylene index (HFPI) of from about 2.8 to 5.3, and preferably from about 0.2% to 3% by weight of perfluoro(alkyl vinyl ether), said copolymer having less than about 50 ppm alkali metal ion, having a melt flow rate of within the range of about 30±3 g/10 min, and having no more than about 50 unstable endgroups/106 carbon atoms and which can be extruded at high speed onto conductor over a broad polymer melt temperature range to give insulated wire of high quality.Type: GrantFiled: July 25, 2008Date of Patent: December 13, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Thomas Robert Earnest, Jr., Daniel A. Favereau, Niall D. McKee, Patricia A. Tooley
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Patent number: 8058352Abstract: A membrane humidifier assembly includes a first flow field plate adapted to facilitate flow of a first gas thereto and a second flow field plate adapted to facilitate flow of a second gas thereto. A polymeric membrane is disposed between the first and second flow fields and adapted to permit transfer of water from the first flow field plate to the second flow field plate. The polymeric membrane includes a polymer having perfluorocyclobutyl groups.Type: GrantFiled: August 28, 2009Date of Patent: November 15, 2011Assignee: GM Global Technology Operations LLCInventors: Sean M MacKinnon, Timothy J. Fuller, Annette M. Brenner
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Patent number: 8053530Abstract: A polymer useful as an ion conductor in fuel cells includes a perfluorocyclobutyl moiety and pendant PFSA side groups. The polymer is made by a variation of the Ullmann reaction. Ion conducting membranes incorporating the polymer are provided.Type: GrantFiled: August 26, 2009Date of Patent: November 8, 2011Assignee: GM Global Technology Operations LLCInventors: Timothy J. Fuller, Sean M MacKinnon, Michael R. Schoeneweiss
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Patent number: 8048963Abstract: An ion exchange membrane is prepared from a block copolymer comprising a hydrophobic polymer segment and a polar polymer segment. The ion exchange membrane is formed by placing a film layer in steam, water or an electric field at a temperature greater than about 40° C. for sufficient amount of time to develop a bicontinuous morphology. The ion exchange membrane is also formed from a film layer comprising a block copolymer and a solvent. The film layer is placed in an electric field at an elevated temperature and dried therein. The film layer is thereby converted into an ion exchange membrane with bicontinuous morphology. The ion exchange membrane prepared according to these processes exhibits improved mechanical and electrochemical properties.Type: GrantFiled: August 31, 2009Date of Patent: November 1, 2011Assignee: GM Global Technology Operations LLCInventors: Timothy J. Fuller, Sean M MacKinnon, Michael R. Schoeneweiss
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Combination of main-chain and side-chain sulfonation of PFCB-6F high-temperature fuel cell membranes
Patent number: 8044146Abstract: A polymer useful as an ion conducting membrane for fuel cell applications includes both main chain and side chain protogenic groups. Methods for preparing the polymer include addition of the side chains both before and after addition of the protogenic groups.Type: GrantFiled: April 16, 2010Date of Patent: October 25, 2011Assignee: GM Global Technology Operations LLCInventors: Lijun Zou, Sean M. MacKinnon, Timothy J. Fuller -
Patent number: 8030405Abstract: A blend composition comprises a fluorine-containing polymer electrolyte and a fluoro-rubber. An electrolyte membrane may be prepared from the blend composition. The electrolyte membrane may be used in electrochemical cells such as electrolyzers, batteries and fuel cells.Type: GrantFiled: May 4, 2009Date of Patent: October 4, 2011Assignee: GM Global Technology Operations LLCInventors: Sean M MacKinnon, Timothy J. Fuller, Michael R. Schoeneweiss
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Publication number: 20110213089Abstract: The present invention provides a clear resin molded body which has high heat resistance that can be used in the reflow soldering process using Pb-free solder, which has high transparency that can be used for an optical member, and which can be easily produced, and also provides a method of producing the same. A clear resin molded body includes a molded body of a resin composition composed of a carbon-hydrogen-bond-containing fluororesin, in which the resin composition is crosslinked by irradiating the molded body with ionizing radiation at least once in an atmosphere at a temperature lower than the melting point of the fluororesin and at least once in an atmosphere at a temperature equal to or higher than the melting point of the fluororesin. A method produces the clear resin molded body.Type: ApplicationFiled: August 2, 2010Publication date: September 1, 2011Inventors: Satoshi Yamasaki, Hiroshi Hayami, Makoto Nakabayashi
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Patent number: 8008404Abstract: A composite membrane for fuel cell applications includes a support substrate with a predefined void volume. The void volume is at least partially filled with an ion conducting polymer composition. Characteristically, the ion conducting polymer composition includes a first polymer with a cyclobutyl moiety and a second polymer that is different than the first polymer.Type: GrantFiled: May 4, 2009Date of Patent: August 30, 2011Assignee: GM Global Technology Operations LLCInventors: Sean M MacKinnon, Timothy J. Fuller
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Patent number: 8003732Abstract: An ion conducting polymeric structure suitable for fuel cell applications is provided. The polymeric structure comprises a non-homogenous polymeric layer. The non-homogeneous layer is a blend of a first polymer comprising cyclobutyl moiety; and a second polymer having a non-ionic polymer segment. The weight ratio of the first polymer to the second polymer varies as a function of position within the non-homogenous layer. The blend composition may be cast into an electrolyte membrane that can be used to prepare electrochemical cells such as batteries and fuel cells.Type: GrantFiled: August 25, 2008Date of Patent: August 23, 2011Assignee: GM Global Technology Operations LLCInventors: Sean M MacKinnon, Michael R. Schoeneweiss, Timothy J. Fuller, Craig S. Gittleman
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Patent number: 7999049Abstract: An emulsion polymerization process for the production of fluoroelastomers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X—Rf-(CH2)n—O—P(O)(OM)2, wherein n=1 or 2, X=H or F, M=a univalent cation, and Rf is a C4-C6 fluoroalkyl or fluoroalkoxy group. Optionally, a second dispersing agent may be employed in the polymerization, said second agent being a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a salt thereof, sulfonic acid and a salt thereof, phosphoric acid and a salt thereof.Type: GrantFiled: January 15, 2009Date of Patent: August 16, 2011Assignee: DuPont Performance Elastomers L.L.C.Inventors: Michael Cregg Coughlin, Ming-Hong Hung, Phan Linh Tang
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Patent number: 7989566Abstract: An emulsion polymerization process for the production of non-elastomeric fluoropolymers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X-Rf-(CH2)n—O—P(O)(OM)2, wherein n is 1 or 2, X?H or F, M=a univalent cation, and Rf is a C4-C6 fluoroalkyl or fluoroalkoxy group. Optionally, a second dispersing agent may be employed in the polymerization, said second agent being a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a salt thereof, sulfonic acid and a salt thereof, phosphoric acid and a salt thereof.Type: GrantFiled: January 15, 2009Date of Patent: August 2, 2011Assignee: DuPont Performance Elastomers LLCInventors: Michael Cregg Coughlin, Ming-Hong Hung
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Patent number: 7989512Abstract: A method of forming an ionomeric membrane includes a step of reacting a first polymer in chlorosulfonic acid to form a first precipitate. The first precipitate comprising a polymer including a polymer unit having at least one —SO2Cl moiety attached thereto and includes a step of dissolving the first precipitate in a polar aprotic solvent to form the first solution. A polymeric membrane is then formed from the first solution such that the membrane includes the polymer unit having at least one —SO2Cl. The polymer including a polymer unit a polymer unit having at least one —SO2Cl is then reacted with a nucleophilic compound to form the polymeric membrane.Type: GrantFiled: March 17, 2010Date of Patent: August 2, 2011Assignee: GM Global Technology Operations LLCInventors: Timothy J. Fuller, Sean M MacKinnon, Michael R. Schoeneweiss
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Publication number: 20110184089Abstract: The invention relates to a process for extruding plastic compositions, in particular polymer melts and mixtures of polymer melts, above all thermoplastics and elastomers, particularly preferably polycarbonate and polycarbonate blends, also with the incorporation of other substances such as for example solids, liquids, gases or other polymers or other polymer blends with improved optical characteristics, with the assistance of a multi-screw extruder with specific screw geometries.Type: ApplicationFiled: June 12, 2009Publication date: July 28, 2011Applicant: Bayer MaterialScience AGInventors: Michael Bierdel, Thomas König, Carsten Conzen, Ulrich Liesenfelder, Klemens Kohlgrüber, Reiner Rudolf, Johann Rechner
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Patent number: 7985805Abstract: A polymer blend useful as an ion conductor in fuel cells includes a first polymer having a cyclobutyl moiety and a second polymer include a sulfonic acid group.Type: GrantFiled: May 4, 2009Date of Patent: July 26, 2011Assignee: GM Global Technology Operations LLCInventors: Timothy J. Fuller, Sean M MacKinnon, Michael R. Schoeneweiss, Craig S. Gittleman
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Publication number: 20110172338Abstract: The present invention provides a processing additive which can bring about improvements in moldability at Mooney viscosity levels at which the dispersibility in a melt-processable resin is high and which further can work at reduced addition levels. The present invention is a processing additive comprising a fluoropolymer having an acid value of not lower than 0.5 KOH mg/g.Type: ApplicationFiled: January 13, 2011Publication date: July 14, 2011Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Shinji MURAKAMI, Ken OKANISHI, Masahiko OKA