Solid Polymer Derived From Fluorine-containing Ethylenic Reactant Patents (Class 525/199)
-
Patent number: 7732531Abstract: The present invention provides a molded article comprising a polytetrafluoroethylene resin (A) and a thermoplastic resin (B) having a melting point of not lower than 100° C. but lower than 322° C., wherein the maximum peak temperature of the endothermic curve appearing on the crystal melting curve of the above polytetrafluoroethylene resin (A) as measured by a differential scanning calorimeter is higher by at least 3° C. than the maximum peak temperature of the endothermic curve appearing on the crystal melting curve of the above polytetrafluoroethylene resin (A) after heating to a temperature of not lower than 340° C. as measured by the differential scanning calorimeter.Type: GrantFiled: August 25, 2004Date of Patent: June 8, 2010Assignee: Daikin Industries, Ltd.Inventors: Hiroyuki Yoshimoto, Yasuhiko Sawada, Shunji Kasai, Shuji Tagashira
-
Publication number: 20100133482Abstract: The present invention pertains to a linear semi-crystalline copolymer [polymer (A)] comprising recurring units derived from vinylidene fluoride (VDF) monomer and at least one hydrophilic (meth)acrylic monomer (MA) of formula (I) wherein each of R1, R2, R3, equal or different from each other, is independently an hydrogen atom or a C1-C3 hydrocarbon group, and ROH is a hydrogen or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group, said polymer (A) comprising from 0.05 to 10% by moles of recurring units derived from said hydrophilic (meth)acrylic monomer (MA) and being characterized by a fraction of randomly distributed units (MA) of at least 40%, having improved thermal stability, to a process for its manufacture, to a composition comprising the same, and to its use as binder in batteries or for the manufacture of hydrophilic membranes.Type: ApplicationFiled: April 22, 2008Publication date: June 3, 2010Applicant: SOLVAY SOLEXIS S.P.A.Inventors: Julio Abusleme, Riccardo Pieri, Emma Barchiesi
-
Patent number: 7728068Abstract: The present invention provides coating compositions that include reactive diluents and have high performance, low VOC levels, and low irritation levels.Type: GrantFiled: November 22, 2004Date of Patent: June 1, 2010Assignee: Valspar Sourcing, Inc.Inventors: T. Howard Killilea, James M. Bohannon
-
Patent number: 7718736Abstract: A processable rubber composition contains a double cured fluorocarbon elastomer dispersed in a matrix of a thermoplastic polymeric material. The cured elastomer contains repeating units derived from one or more fluorine-containing monomers, and further contains low levels of a peroxide cure site that contains at least one of a C—Cl bond, a C—Br bond, a C—I bond, and an olefin. 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. In various embodiments, the processable compositions are thermally processed into molded articles that exhibit a high degree of base resistance, especially a high degree of resistance to degradation of physical properties upon exposure to fluids containing strong nucleophiles such as amines.Type: GrantFiled: June 30, 2005Date of Patent: May 18, 2010Assignee: Freudenberg-NOK General PartnershipInventors: Edward Hosung Park, Francis Joseph Walker
-
Patent number: 7713629Abstract: A polyelectrolyte film is provided, the polyelectrolyte film comprises an interpenetrating network of a net positively charged polymer and a net negatively charged polymer, wherein the net positively charged polymer, the net negatively charged polymer, or both contain polymer repeat units with at least two fluorine atoms.Type: GrantFiled: March 28, 2005Date of Patent: May 11, 2010Assignee: Florida State University Research FoundationInventor: Joseph B. Schlenoff
-
Publication number: 20100110609Abstract: The present invention relates to a highly dielectric film formed by using (A) a fluorine-containing resin comprising vinylidene fluoride unit and tetrafluoroethylene unit in a total amount of not less than 95% by mole, and provides a film for a film capacitor which has high dielectric property and high withstanding voltage and can be made thin.Type: ApplicationFiled: January 24, 2008Publication date: May 6, 2010Inventors: Meiten Koh, Kouji Yokotani, Miharu Matsumura, Eri Mukai, Nobuyuki Komatsu
-
Publication number: 20100087599Abstract: The invention provides a fluororesin composition capable of providing a molded article having low relative dielectric constant, excellent in a temperature stability and causing only small transmission losses. The invention is a fluororesin composition wherein a rate of change in relative dielectric constant between 25° C. and 80° C. of a molded article produced therefrom under a standard condition is not greater than 0.2%.Type: ApplicationFiled: February 18, 2008Publication date: April 8, 2010Applicant: DAIKIN INDUSTRIES , LTD.Inventors: Hiroyuki Yoshimoto, Hirokazu Yukawa, Yasuhiko Sawada, Taku Yamanaka, Masamichi Sukegawa
-
Publication number: 20100080959Abstract: Blended fluoropolymer compositions that, in one exemplary application, may be applied as a coating to a flexible substrate and, optionally, to a flexible substrate that has been previously coated with a primer or basecoat and/or a midcoat. In one embodiment, the composition is a blend of at least one low molecular weight polytetrafluoroethyelene (LPTFE) and at least one melt-processible fluoropolymer (MPF). In another embodiment, the composition includes a fluoropolymer base component including at least one fluoropolymer such as high molecular weight polytetrafluoroethylene (HPTFE), and additionally includes the LPTFE/MPF blended fluoropolymer composition. After being applied to the flexible substrate, optionally over a primer or basecoat and/or midcoat, and then cured, the present compositions form coatings that demonstrate improved abrasion resistance and/or improved release characteristics and/or increased translucency/transparency and /or improved impermeability.Type: ApplicationFiled: September 25, 2009Publication date: April 1, 2010Applicant: WHITFORD CORPORATIONInventors: Leonard W. Harvey, Helen L. Brain
-
Publication number: 20100080955Abstract: A fluoropolymer coating composition that may be applied over a primer and/or at least one midcoat in a non-stick coating system. The coating composition may be prepared and applied in the form of a liquid dispersion, and includes at least one fluoropolymer base component, such as polytetrafluoroethylene (PTFE) and, in particular, at least one high molecular weight PTFE (HPTFE). The coating composition additionally includes a blended fluoropolymer composition. The blended fluoropolymer composition is a blend of at least one low molecular weight PTFE (LPTFE) and at least one melt-processible fluoropolymer. After application directly to a substrate or over an underlying coating, the coating demonstrates improved abrasion and scratch resistance, as well as improved release characteristics, as compared to known coatings that include only HPTFE or HPTFE with a small amount of melt processible fluoropolymer.Type: ApplicationFiled: September 25, 2009Publication date: April 1, 2010Applicant: WHITFORD CORPORATIONInventors: Leonard W. Harvey, Lawrence D. Leech
-
Publication number: 20100076158Abstract: There is provided a curable polymer composition being curable quickly to form a cured article having excellent adhesion and followability to a substrate and at least comprising (A) an acrylic copolymer having a hydrogen atom bonded to a silicon atom, (B) a compound having at least two aliphatic unsaturated bonds in one molecule thereof, (C) a fluoroolefin copolymer comprising vinylidene fluoride as main component, and (D) a catalyst for hydrosilylation reaction.Type: ApplicationFiled: December 6, 2007Publication date: March 25, 2010Applicant: Daikin Industries, Ltd.Inventors: Katsuhiko Imoto, Tetsuo Shimizu, Masayuki Hayashi, Tomohiro Iimura, Eiji Kitaura, Peter Cheshire Hupfield
-
Patent number: 7683130Abstract: The present invention relates to plenum cables jacketed with a composition comprising perfluoropolymer, inorganic char-forming agent, and fluoropolymer additive, which composition passes the NFPA-255 burn test.Type: GrantFiled: July 12, 2006Date of Patent: March 23, 2010Assignees: E.I. du Pont de Nemours and Company, Alphagary CorporationInventors: Yevgeniy I. Globus, Mark A. Jozokos, Sundar Kilnagar Venkataraman, Heidi Elizabeth Burch
-
Patent number: 7674869Abstract: A random copolymer having improved mechanical toughness and properties suitable for thin wall thermoforming applications is provided. The random copolymer exhibits the following physical properties: a flexural modulus profile having a 2% flexural modulus of about 168,000 psi, a 1% flexural modulus of about 190,000 psi, and a 0.4% flexural modulus of about 199,000 psi; a melt flow rate of at least about 2.0 g/10 min.; and a haze of less than about 40%. The random copolymer preferably comprises a copolymer of ethylene and propylene, wherein the ethylene content is in the range of from about 0.2% to about 0.8% ethylene by weight of the copolymer. The random copolymer also preferably includes a stabilizer and a clarifying agent such as a sorbitol based clarifier or a nucleator. Various articles of manufacture such as thermoformed containers and packaging may be formed from the random copolymer.Type: GrantFiled: December 7, 2004Date of Patent: March 9, 2010Assignee: Fina Technology, Inc.Inventors: Mike Musgrave, LuAnn Kelly, Peter Selg
-
Patent number: 7666947Abstract: A gasket material comprising polytetrafluoroethylene (PTFE) and a thermoplastic polymer having a melting point lower than the melting point of PTFE. Preferred thermoplastic polymers comprise fluorinated thermoplastic polymers, and most preferred fluorinated thermoplastic polymers comprise fluorinated ethylene propylene and perfluoroalkoxy copolymer. The PTFE component preferably comprises full density PTFE, and a filler material may optionally be added. The PTFE component is present in the gasket material in an amount from approximately 50% to less than 100%, based on the total weight of the gasket material, and the thermoplastic polymer is present in an amount from greater than 0% to approximately 20%, based on the total weight of the gasket material.Type: GrantFiled: April 7, 2005Date of Patent: February 23, 2010Assignee: Garlock Sealing Technologies, LLCInventors: Jarod R. Hammar, Erik Phelps, Stefan Pitolaj
-
Patent number: 7666948Abstract: The present invention provides an elastomer composition comprising a mixture of (A) a perfluoroelastomer and (B) at least one elastomer selected from fluorine rubbers, silicone rubbers and ethylene-propylene based rubbers, in a mixing ratio (A/B) of from 0.5/99.5 to 80/20 in terms of weight ratio.Type: GrantFiled: December 27, 2005Date of Patent: February 23, 2010Assignee: Nichias CorporationInventors: Seiji Aizawa, Tomoya Shimizu, Naoya Kuzawa, Hiroshi Saito
-
Patent number: 7662886Abstract: Processable rubber compositions contain a vulcanized elastomeric material dispersed in a matrix of a thermoplastic polymeric material. The vulcanized elastomeric material is a peroxide cure polymeric material containing repeating units derived from fluorine-containing monomers and at least one peroxide cure site monomer. 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 radical curing system, a fluorocarbon elastomer material, and a fluoroplastic 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 may be readily formed from the rubber compositions according to conventional thermoplastic processes such as blow molding, injection molding, and extrusion.Type: GrantFiled: September 30, 2008Date of Patent: February 16, 2010Assignee: Freudenberg-NOK General PartnershipInventor: Edward Hosung Park
-
Publication number: 20100029853Abstract: Controlled architecture copolymers comprise at least one block A obtained by polymerizing a mixture of ethylenically unsaturated monomers (A0) not including vinyl phosphonate monomers and at least one block B obtained by polymerizing a mixture of ethylenically unsaturated monomers (B0) including at least 50 mol % of at least one monomer B1 bearing at least one vinyl phosphonate function.Type: ApplicationFiled: May 18, 2006Publication date: February 4, 2010Applicant: Rhodia Receherches et TechnologiesInventor: Mathias Destarac
-
Publication number: 20100022713Abstract: Aqueous dispersions on non-melt flowable PTFE and melt-fabricable perfluoropolymer are mixed together, followed by recovery of the resultant mixture of the dispersed particles of each of these polymers, and melt mixing of the resultant mixture of particles to obtain a blend in which the PTFE particles form the disperse phase and the perfluoropolymer forms the continuous phase, the melt mixing producing advantageous melt viscosities and the blend exhibiting advantageous physical properties even at high PTFE contents of about 30 wt %.Type: ApplicationFiled: September 29, 2009Publication date: January 28, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: SUNDAR KILNAGAR VENKATARAMAN, RALPH MUNSON ATEN, HEIDI ELIZABETH BURCH
-
Publication number: 20100018778Abstract: Seals and sealing members are formed from a composition generally comprising a first elastomeric material and a second elastomeric material, wherein the second elastomeric material comprises a dispersion of nanosized particles disposed within a polymer matrix of the second elastomeric material. Preferred first and second elastomeric materials are fluoroelastomers, and preferred nanosized particles are fluoropolymers. The nanosized particles are sized less than about 100 nm. The composition comprises about 0.2 to 65 percent by weight of first elastomeric material, about 20 to 95 percent by weight of second elastomeric material, and about 10 to 90 percent by weight particles based on the total weight of the particles and the second elastomeric material. The composition can be used to form annular O-ring seals placed within rotary cone bits used for drilling subterranean formations, and can be used to form a selected portion of the seal or the entire seal.Type: ApplicationFiled: July 23, 2008Publication date: January 28, 2010Applicant: SMITH INTERNATIONAL, INC.Inventor: Saman Chandana Nanayakkara
-
Patent number: 7652102Abstract: A polymeric composition having improved melt extrusion properties comprising: A) an olefin polymer; B) a catalyst neutralizer comprising a cationic derivative of a poly(oxyalkylene) compound; and C) a processing additive composition comprising a fluoropolymer and optionally, an interfacial agent.Type: GrantFiled: November 17, 2005Date of Patent: January 26, 2010Assignee: Dow Global Technologies, Inc.Inventors: Thoi H. Ho, Pascal E. R. E. J. Lakeman, Robin J. Lee, Ronald Wevers
-
Publication number: 20100004377Abstract: Disclosed are compositions comprising (i) a rigid thermoplastic resin comprising structural units derived from a (C1-C12)alkyl (meth)acrylate monomer, and optionally a second monomer selected from the group consisting of a vinyl aromatic monomer, a monoethylenically unsaturated nitrile monomer and mixtures thereof, and (ii) a fluoropolymer additive comprising 30 wt. % to 70 wt. % of a fluoropolymer and 70 wt. % to 30 wt. % of a carrier polymer comprising structural units derived from a vinyl aromatic monomer, or a monoethylenically unsaturated nitrile monomer, or mixtures thereof, wherein the fluoropolymer is at least partially encapsulated by the carrier polymer and wherein the amount of fluoropolymer present in the composition is in a range of 2 parts by weight (pbw) to 25 pbw based on 100 pbw of the composition, and wherein the composition is free of both rubber component and filler. Articles made from the compositions and a method to improve physical properties in the compositions are also disclosed.Type: ApplicationFiled: July 27, 2009Publication date: January 7, 2010Inventors: Sandeep Dhawan, Satish Kumar Gaggar
-
Patent number: 7638581Abstract: A fluoropolymer coating composition contains a homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin. The composition may be prepared by blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles. Quasi-homogenous compositions may be prepared by blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin. Rubbing the disclosed coatings can provide a thin, continuous or nearly continuous fluoropolymer surface layer atop a less crystalline or amorphous fluororesin binder containing crystalline submicron fluoropolymer particles.Type: GrantFiled: December 19, 2005Date of Patent: December 29, 2009Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Tatsuo Fukushi, Chuntao Cao, Lan H. Liu, Thomas P. Klun, William D. Coggio, Vivian W. Jones
-
Publication number: 20090317553Abstract: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (?m), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (?m).Type: ApplicationFiled: May 19, 2009Publication date: December 24, 2009Applicant: WHITFORD CORPORATIONInventors: Leonard W. Harvey, Michael Coates, Julie K. Wright
-
Publication number: 20090312473Abstract: A fluorine-containing alloyed copolymer, which comprises a fluorine-containing elastomer copolymer having a fluorine content of not less than 64% by weight, and a resinous tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer having an amount of heat of crystal fusion ?H of not more than 10 J/g, can give crosslinked moldings having a distinguished plasma resistance against both CF4 plasma treatment and O2 plasma treatment, and also a distinguished cracking resistance at the plasma irradiation, and showing necessary normal state physical properties and compression set when used as seals, and capable of providing soft seals of low hardness, and attaining molding at relatively low temperatures.Type: ApplicationFiled: October 23, 2006Publication date: December 17, 2009Inventors: Jun Kanega, Takashi Obara, Katsumi Suzuki, Takashi Enokida
-
Patent number: 7625974Abstract: A non-dripping, flame retardant, fluoropolymeric composition comprising: (a) a fluoropolymeric base polymer; (b) at least one char forming agent; and (c) a compatibilizer agent. The fluoropolymeric base polymer is preferably selected from the group consisting of PVDF (polyvinylidene fluoride), ECTFE, poly-ethylene chlorotrifluoroethylene, and ETFE poly-ethylene tetrafluoroethylene. Such compositions are especially useful for appliance wire, aerospace/military wire, cable raceways, blown fiber tubes, fire alarm cables, circuit integrity cables, fiber optic distribution cables & breakout components, heat tracing cable jacket, stage lighting cable, industrial cable, shipboard cable (military & passenger), shielded cable jackets.Type: GrantFiled: September 29, 2006Date of Patent: December 1, 2009Assignee: AlphaGary CorporationInventors: Mark A. Jozokos, Yevgeniy I. Globus
-
Patent number: 7615591Abstract: A rubber composition comprises a diene rubber component, a filler and a softening agent, in which a given amount of a filler is compounded based on 100 parts by mass of a diene rubber component, and a softening agent is included in a given amount per the filler, and not less than 60% by mass of the diene rubber component is a solution-polymerized styrene-butadiene copolymer rubber having a mass average molecular weight of not less than 1,000,000, and the filler is selected from the group consisting of carbon black, silica and an inorganic agent of a formula (I): mM.xSiOy.zH2O (wherein M is at least one metal selected from the group consisting of aluminum, magnesium, titanium and calcium, or an oxide of such a metal or a hydroxide of such a metal, m is a number of 1-5, x is a number of 0-10, y is a number of 2-5 and z is a number of 0-10), wherein each of the filler and the softening agent is charged in at least two fractions.Type: GrantFiled: February 2, 2005Date of Patent: November 10, 2009Assignee: Bridgestone CorporationInventor: Hideki Matsui
-
Publication number: 20090275251Abstract: The invention concerns a multilayer structure comprising: a PVDF-based film F1 affixed to a PET or PEN sheet; or a PVDF-based film F1 bonded to a PET or PEN sheet which is itself affixed to a PVDF-based film F2.Type: ApplicationFiled: January 25, 2007Publication date: November 5, 2009Applicant: Arkema France`Inventors: Anthony Bonnet, Sandrine Duc, Cyrille Mathieu, Johann Laffargue
-
Publication number: 20090264539Abstract: Polymers of fluorinated monomers and acrylate and alkyl acrylates are disclosed which demonstrate improved performance as coatings for implantable devices. Such coatings may, for example, be used to release a bioactive agent from the medical device. One specific application lies in drug-eluting coatings for stents.Type: ApplicationFiled: April 16, 2009Publication date: October 22, 2009Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Gordon Kocur, David Rolf, James Lasch, Kasyap Seethamraju
-
Patent number: 7605209Abstract: The present invention provides coating compositions that include reactive diluents and have high performance, low VOC levels, and low irritation levels. Certain embodiments of the present invention include water and water-dispersible polymers and other embodiments do not include water.Type: GrantFiled: May 27, 2004Date of Patent: October 20, 2009Assignee: Valspar Sourcing, Inc.Inventors: T. Howard Killilea, James M Bohannon
-
Patent number: 7597957Abstract: [Object] In a fishing line for capturing large fishes made by a polyvinylidenefluoride resin filament, a polyvinylidenefluoride resin filament wherein even by enhancing the tensile strength at break by enlarging the filament diameter than that of usual fishing line, an appropriate tensile elongation at break can be obtained, so that the rapid and enormous impact generated when large fishes have taken the bait can be reduced, and that has a homogenous fiber structure which generates almost no inner cavity when forming a filament with a large diameter, is developed.Type: GrantFiled: April 20, 2006Date of Patent: October 6, 2009Assignee: Kureha CorporationInventors: Hirokazu Matsui, Hiroshi Ochiai, Masaru Satou, Satoshi Hashimoto, Toshiya Mizuno
-
Publication number: 20090239147Abstract: A polymer composition comprising (a) a fluorine-containing polymer and (b) a functional group-containing polymer which contains a structural unit originating from an alkyl (meth)acrylate and a structural unit originating from at least one monomer selected from the group consisting of a sulfonic acid group-containing unsaturated monomer, an amide group-containing unsaturated monomer, and a sulfonic acid group and amide group-containing unsaturated monomer is provided.Type: ApplicationFiled: February 2, 2007Publication date: September 24, 2009Applicant: JSR CORPORATIONInventors: Kazuaki Itou, Takeshi Mogi, Hirobumi Suzuki, Akira Nishikawa
-
Patent number: 7588796Abstract: A method of making a composite membrane with ion exchange properties includes, in an exemplary embodiment, forming a porous membrane from a first material, dissolving a coating material in a fluid at supercritical conditions, and exposing the porous membrane to the coating material dissolved in the supercritical fluid. The method also includes precipitating a uniform coating of the coating material onto an exterior surface of the porous membrane by changing the supercritical conditions of the fluid to a non-supercritical condition, and applying an ion exchange material to the coated porous membrane so that the ion exchange material is in intimate contact with substantially all of the coated surfaces of the porous membrane.Type: GrantFiled: March 11, 2005Date of Patent: September 15, 2009Assignee: BHA Group, Inc.Inventors: Robert J. Klare, James DeYoung, James B. McClain
-
Publication number: 20090224421Abstract: The invention relates to a rotomolding process for forming a multi-layer article of two different polymers with different melting points in which an outer layer polymer powder is added to a rotational molder along with an inner layer polymer powder that is separated from the outer layer powder by a release film. The release film has a particular melting point that is greater than that of the outer layer polymer and preferably between the melting points of the inside layer and outside layer polymers. In one embodiment, the release layer forms an enclosure or bag in which the inner layer (higher melting point) powder is enclosed. In another embodiment the release film forms a barrier between an insulated cavity and the mold. The process provides a means for a “one-shot” rotomolding method.Type: ApplicationFiled: April 4, 2007Publication date: September 10, 2009Applicant: Arkema Inc.Inventors: Gregory S. O'Brien, Bruce Clay, Ronald Patridge
-
Publication number: 20090226654Abstract: The object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance, chemical resistance and oil resistance. Another object of the present invention is to provide a molded article, a laminated article, a hose for industrial use, a tube for industrial use, a fuel hose and a fuel tube comprising the thermoplastic polymer composition. Further object of the present invention is to provide a process for preparing a thermoplastic polymer composition.Type: ApplicationFiled: November 25, 2005Publication date: September 10, 2009Applicant: Daikin Industries, LtdInventors: Tomihiko Yanagiguchi, Toshiki Ichisaka, Haruhisa Masuda, Mitsuhiro Otani
-
Publication number: 20090220786Abstract: Methods for modulated degenerative transfer living polymerization and isotactic-atactic stereoblock and stereogradient poly(olefins) thereby Abstract A method of producing a multiblock, stereoblock polyolefin having substantially uniform microstructure is disclosed. The method includes contacting a Ziegler-Natta pre-catalyst with a co-catalyst and an olefin to polymerize the olefin and form a first stereoblock, adding a methyl donator that changes the stereoregularity of the polymerization, and polymerizing the olefin to form a second stereoblock. The methods of the present invention allow for the production of poly(olefin)s having predictable degrees of incorporation of stereoerrors of a known type. The methods allows for the production of a variety of poly(olefin) microstructures, ranging from stereoblock to stereogradient poly(olefin)s and poly(olefin)s having fully isotactic to fully atactic microstructures.Type: ApplicationFiled: March 17, 2006Publication date: September 3, 2009Inventors: Lawrence R. Sita, Matthew B. Harney, Yonghui Zhang
-
Patent number: 7582353Abstract: Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing to the above composition and physical properties, the crystallinity and elastic modulus of the PVDF-based resin are altered. As a result, an appropriate flexibility can be imparted to the monofilaments while preventing deterioration in the mechanical properties.Type: GrantFiled: January 26, 2006Date of Patent: September 1, 2009Assignee: Kureha CorporationInventors: Satoshi Hashimoto, Shingo Taniguchi, Yasuhiro Tada, Masayuki Hino, Masaru Satou, Takeo Takahashi
-
Patent number: 7579409Abstract: A micropowder composition containing a granular PTFE micropowder, a fine powder PTFE micropowder, and a fine powder molding resin provides mixtures with fluoroelastomers containing copolymerized and alternating units of tetrafluoroethylene and propylene that provide molded articles having improved surface smoothness characteristics and tear resistance on molding. Processes for mixing additives with fluoroelastomers by adding or mixing the fluoroelastomer with the additives in the presence of micropowder PTFE compositions.Type: GrantFiled: October 27, 2005Date of Patent: August 25, 2009Assignee: AGC Chemicals Americas, Inc.Inventors: David J. Lavanga, Richard DeLucca
-
Publication number: 20090203830Abstract: The invention pertains to a thermoplastic fluoropolymer composition comprising: at least one thermoplastic partially fluorinated fluoropolymer having a melt flow index (MFI) of less than 10 g/10 min. as measured according to ASTM D-1238 under a piston load of 5 kg polymer A; from 0.05 to 5% by weight of A at least one (per)fluoropolyether, polymer B; and from 0 to 10% by weight of A of at least one per(halo)fluoropolymer polymer C. The addition of a (per)fluoropolyether B and, optionally, of a per(halo) fluoropolymer C advantageously enables improvement of rheological behavior of thermoplastic partially fluorinated fluoropolymer A, making possible processing in less severe conditions and yielding final parts with outstanding surface aspect and good homogeneity and coherency. Still objects of the inventions are the process for manufacturing said thermoplastic fluoropolymer composition and the articles thereof.Type: ApplicationFiled: June 27, 2006Publication date: August 13, 2009Applicant: SOLVAY SOLEXIS S.P.A.Inventors: Julio A. Abusleme, Giulio Brinati, Pier Antonio Guarda
-
Publication number: 20090203846Abstract: Thermoplastic vulcanizate compositions prepared from fluorothermoplastic matrix and dispersed fluoroelastomeric regions, and articles comprising the thermoplastic vulcanizate, exhibiting improved resistance to polar organic solvents.Type: ApplicationFiled: February 8, 2008Publication date: August 13, 2009Applicant: Freudenberg-NOK General PartnershipInventors: Edward Hosung Park, Francis Joseph Walker
-
Publication number: 20090202769Abstract: An object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance and chemical resistance. Further object of the present invention is to provide a molded article, a sealing material, peripheral parts of fuel system, a fuel hose and a fuel container comprising the thermoplastic polymer composition. The present invention relates to a thermoplastic polymer composition comprising a fluororesin (A) containing a fluorine-containing ethylenic polymer (a), a crosslinked fluororubber (B) in which at least a part of at least one kind of fluororubber (b) is crosslinked, and a fluorine-containing thermoplastic elastomer (C).Type: ApplicationFiled: November 25, 2005Publication date: August 13, 2009Applicant: Daikan Industries, Ltd.Inventors: Haruhisa Masuda, Mitsuhiro Otani, Tomihiko Yanagiguchi, Toshiki Ichisaka
-
Publication number: 20090197039Abstract: Disclosed herein are extruded articles such as, for example, fibers and films, containing thermoplastic polymeric compositions having a copolymeric major component and a melt processable additive treatment, wherein the melt processable additives have enhanced segregation to or expression at the surface of the article, thereby improving the effect of the desired characteristic of the additive treatment. Also disclosed are multicomponent extruded thermoplastic articles having two or more distinct components arranged in a specific geometric arrangement, wherein the thermoplastic polymeric composition of at least one geometric component includes a copolymeric major component and a melt processable additive treatment. Also disclosed are web materials including the extruded articles.Type: ApplicationFiled: April 8, 2009Publication date: August 6, 2009Applicant: KIMBERLY-CLARK WORLDWIDE, INC.Inventors: Hue Scott Snowden, Michael David Powers, Roger Bradshaw Quincy, III
-
Patent number: 7557164Abstract: Blends of fluorinated ionomer with at least two nonionomeric fluoropolymers provide fuel cell membranes whose tensile strength and conductivity are superior to blends using a single fluoropolymer.Type: GrantFiled: August 18, 2004Date of Patent: July 7, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Vinci Martinez Felix, Gonzalo Escobedo, Ram-Tirth Khanna
-
Publication number: 20090171004Abstract: The invention pertains to a thermoplastic fluoropolymer composition comprising: at least one thermoplastic partially fluorinated fluoropolymer having a melt flow index (MFI) of less than 10 g/10 min, as measured according to ASTM D-1238 under a piston load of 5 kg polymer A; from 0.05 to 5% by weight of A at least one (per)fluoropolyether, polymer B; and from 0 to 10% by weight of A of at least one per(halo)fluoropolymer polymer C. The addition of a (per)fluoropolyether B and, optionally, of a per(halo)fluoropolymer C advantageously enables improvement of rheological behavior of thermoplastic partially fluorinated fluoropolymer A, making possible processing in less severe conditions and yielding final parts with outstanding surface aspect and good homogeneity and coherency. Still objects of the inventions are the process for manufacturing said thermoplastic fluoropolymer composition and the articles thereof.Type: ApplicationFiled: June 27, 2006Publication date: July 2, 2009Applicant: Solvay Solexis S.p.AInventors: Julio A. Abusleme, Giulio Brinati, Pier Antonio Guarda
-
Patent number: 7553907Abstract: Melt processible fluoropolymer containing functional groups such as hydroxyl and nitrile have antistatic properties that make them suitable in articles and parts for use in conditions where static electricity can be a problem, such as copying machines and fuel lines.Type: GrantFiled: August 23, 2004Date of Patent: June 30, 2009Assignee: DuPont-Mitsui Fluorochemicals Co LtdInventor: Jeong Chang Lee
-
Patent number: 7550555Abstract: Ultrahigh molecular weight polyethylene compositions of highly beneficial sintering characteristics are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.Type: GrantFiled: January 24, 2003Date of Patent: June 23, 2009Assignee: Smith & Nephew Orthopaedics AGInventors: Paul Smith, Jeroen Visjager, Theo Tervoort
-
Patent number: 7538156Abstract: The present invention relates to a masterbatch comprising by weight: from 1 to 50% of a blend of at least one fluoropolymer (A) and at least one interfacial agent (B); from 99 to 50% of a polyolefin (C); such that the two constituents (A) and (B) are intimately blended beforehand at a temperature such that at least one is in the melt state throughout its mass or on its surface, and are then blended with the polyolefin (C). The invention also relates to the use of the masterbatch as a processing aid for extruding a polyolefin (D), in particular for extruding a film-form polyolefin. The invention also relates to the process for obtaining the masterbatch.Type: GrantFiled: July 14, 2005Date of Patent: May 26, 2009Assignee: Arkema FranceInventors: Benoit Barriere, Anthony Bonnet, Johann Laffargue, Gilles Marot
-
Publication number: 20090124748Abstract: Polymeric composition based on a PVDF homopolymer and a thermoplastic fluorocopolymer Polymeric composition based on a PVDF homopolymer and a thermoplastic fluoropolymer offering an improved toughness/processability compromise, possessing an apparent melt viscosity not exceeding 60 000 Pa·s at a shear rate of 1 s?1, a ductile-brittle transition temperature below +5° C. and a weight loss in air at 150° C. of 5% or less. Pipes and fashioned articles prepared from this composition.Type: ApplicationFiled: October 20, 2005Publication date: May 14, 2009Applicant: SOLVAY (SOCIETE ANONYME)Inventors: Thierry Baert, Bernard Goffaux, Vincent Bodart, Stephane Heuschling
-
Publication number: 20090124759Abstract: The present invention provides a crosslinkable composition being capable of providing a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. Also there is provided a molded article and a sealing material for an oxygen sensor which have excellent long-term heat resistance and satisfactory compression set. The crosslinkable composition comprises (A) a compound having at least one specific crosslinkable reaction group and (B) a nonperfluoro fluorine-containing elastomer being crosslinkable with the compound (A).Type: ApplicationFiled: October 13, 2006Publication date: May 14, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keiko Washino, Meiten Koh, Yasuko Takagahara
-
Publication number: 20090118429Abstract: To provide a curable composition which provides a fluorinated cured product excellent in transparency, light resistance, heat resistance and mechanical strength and hardly damaged by stress concentration. A curable composition comprising a perfluoro polymer (a) containing a unit derived from a perfluorodiene having two polymerizable carbon-carbon double bonds, wherein two carbon atoms in one carbon-carbon double bond form the main chain, and the other carbon-carbon double bond forms a side chain; a perfluorocyclic monoene (b) having at least 8 carbon atoms, which has an alicyclic structure made of carbon atoms and optionally containing an oxygen atom, and one polymerizable carbon-carbon double bond, wherein at least one of two carbon atoms forming the carbon-carbon double bond is a carbon atom constituting the alicyclic structure; and a polymerization initiator (i).Type: ApplicationFiled: December 3, 2008Publication date: May 7, 2009Applicant: Asahi Glass Company, LimitedInventors: Norihide SUGIYAMA, Masahiro Ohkura
-
Publication number: 20090114343Abstract: Hot melt adhesives include a thermoplastic terpolymer of vinylidene fluoride, tetrafluoro ethylene and hexafluoropropylene and a terpolymer of glycidyl methacrylate, ethylene and an acrylic ester. The adhesives will bond well to a variety of substrates, in particular substrates of very low surface energy such as polytetrafluoroethylene (PTFE).Type: ApplicationFiled: January 8, 2009Publication date: May 7, 2009Applicant: Tyco Electronics CorporationInventors: Ashok K. Mehan, Rene Jairo Revueltas, Bryan P. Williams
-
Patent number: 7528198Abstract: The present invention provides a fluororesin composition, which is excellent in moldability and crack resistance and particularly, does not cause cone break when coating an electric wire, a process for preparing the composition and a cable coated with the composition. Specifically, the present invention provides a fluororesin composition comprising a tetrafluoroethylene/hexafluoropropylene copolymer and polytetrafluoroethylene compounded thereto, which has a melt flow rate of at least 15 at 372° C. 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: May 5, 2009Assignee: Daikin Industries, Ltd.Inventors: Tadahiro Yabu, Yoshiyuki Takase, Masayuki Namimatsu, Yoshiyuki Hiraga