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Tetrafluoro patents



      
           
This page is updated frequently with new Tetrafluoro-related patents. Subscribe to the Tetrafluoro RSS feed to automatically get the update: related Tetrafluoro RSS feeds.

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Date/App# patent app List of recent Tetrafluoro-related patents
04/17/14
20140107250
 Fixing member, method for manufacturing the same, fixing apparatus, and image forming apparatus patent thumbnailFixing member, method for manufacturing the same, fixing apparatus, and image forming apparatus
The present invention relates to a fixing member including a surface layer containing pfa, the fixing member being excellent in wear resistance and having high release properties to a toner. The fixing member includes a base member, an elastic layer provided on the surface of the base member, and a surface layer, wherein the surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer having a particular partial structure, and has a surface having a contact angle of 67 degrees or more as measured in a mixed liquid for a wetting tension test having a wetting tension of 31.0 mn/m..
04/17/14
20140107242
 Compositions containing tetrafluoropropene and carbon dioxide patent thumbnailCompositions containing tetrafluoropropene and carbon dioxide
Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (co2) and from about 99 to about 60 percent, on a weight basis, of a compound having the formula i xcfzr3-z (i), where x is a c2 or a c3 unsaturated, substituted or unsubstituted, alkyl radical, each r is independently cl, f, br, i or h, and z is 1 to 3.
04/17/14
20140106084
 Fluorocarbon resin composite, cookware, cooker, roller for office automation equipment, belt for office automation equipment , and method for producing them patent thumbnailFluorocarbon resin composite, cookware, cooker, roller for office automation equipment, belt for office automation equipment , and method for producing them
A fluorocarbon resin composite includes a fluorocarbon resin layer on a base, in which a fluorocarbon resin constituting the fluorocarbon resin layer is crosslinked by electron beam irradiation, and the base has a desired shape obtained by machining. The fluorocarbon resin is composed of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, polytetrafluoroethylene, or a mixture of the tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and polytetrafluoroethylene.
04/17/14
20140105955
 Thermoplastic fluoropolymer-coated medical devices patent thumbnailThermoplastic fluoropolymer-coated medical devices
A medical device provided with at least a partial surface coating of a thermoplastic copolymer of tetrafluoroethylene and perfluoroalkylvinylether that is free of cross-linking monomers and curing agents. The fluoropolymer coating is preferably an amorphous thermoplastic, is highly inert and biocompatible, has elastomeric characteristics that provide desirable mechanical properties such as good flexibility and durability.
04/17/14
20140104674
 Display medium and manufacturing method thereof and electrophoretic display therewith patent thumbnailDisplay medium and manufacturing method thereof and electrophoretic display therewith
A display medium adapted for an electrophoretic display is provided. The display medium includes at least one particle and a random copolymer bonded with the particle, wherein the random copolymer has a structural unit originated from a first monomer and a second monomer.
04/17/14
20140103245
 Electrolyte synthesis for ultracapacitors patent thumbnailElectrolyte synthesis for ultracapacitors
A method of forming an electrolyte solution involves combining ammonium tetrafluoroborate and a quaternary ammonium halide in a liquid solvent to form a quaternary ammonium tetrafluoroborate and an ammonium halide. The ammonium halide precipitate is removed from the solvent to form an electrolyte solution.
04/10/14
20140100665
 Non-resorbable plugs patent thumbnailNon-resorbable plugs
A non-resorbable wound dressing can include a plug made from polytetrafluoroethylene (ptfe). The plug can have a three-dimensional shape.
04/10/14
20140099528
 Printed energy storage device patent thumbnailPrinted energy storage device
A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate.
04/10/14
20140096682
 Fluorinated surfactants and stabilization of polytetrafluoroethylene (ptfe) particles in hollow fiber spin solutions patent thumbnailFluorinated surfactants and stabilization of polytetrafluoroethylene (ptfe) particles in hollow fiber spin solutions
Methods and apparatus relate to recovery of carbon dioxide and/or hydrogen sulfide from a gas mixture. Separating of the carbon dioxide, for example, from the gas mixture utilizes a liquid sorbent for the carbon dioxide.
04/10/14
20140096334
 Paint applicator patent thumbnailPaint applicator
An applicator includes a cylindrical core having an interior surface and an exterior surface. A backing layer is attached to at least a portion of the exterior surface of the cylindrical core.
04/03/14
20140094557
Expandable tfe copolymers, method of making, and porous, expanded articles thereof
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. Articles made from the expandable copolymer may include tapes, membranes, films, fibers, and are suitable in a variety of end applications, including medical devices..
03/27/14
20140085601
Contact lens having a chip integrated into a polymer substrate and method of manufacture
Contact lenses and methods of manufacture are provided. In one aspect, a method includes: positioning components in predefined locations on a first surface; applying pressure on the components employing a second surface; providing molten material between the first surface and the second surface and around the components; embedding the components in a substrate by cooling the molten material and causing the molten material to harden, the substrate being a substantially solid form of molten material; and removing the first surface and the second surface after embedding the components in the substrate.
03/27/14
20140083929
Microporous modified-polytetrafluoroethylene membrane, porous-modified-polytetrafluoroethylene-membrane composite and production process thereof, and separation membrane element
The invention offers a microporous modified-polytetrafluoroethylene membrane that is a microporous membrane having a significantly small pore diameter and narrow pore-diameter distribution and that can remove microscopic foreign particles at high efficiency when used as a filtration membrane. A microporous modified-polytetrafluoroethylene membrane that is a microporous membrane produced by the steps of producing a copolymer of hexafluoropropylene or perfluoroalkyl ether and tetrafluoroethylene having the number of moles not less than 50 times that of the hexafluoropropylene or perfluoroalkyl ether, forming the copolymer into the shape of a membrane, heating the membrane to the melting point of the copolymer or above to bake the copolymer, cooling the obtained baked product, and stretching the baked product and that has a mean flow pore diameter of 30 nm or less; a porous-modified-polytetrafluoroethylene-membrane composite that incorporates the microporous membrane and a production process of the composite; and a separation membrane element incorporating the porous-modified-polytetrafluoroethylene-membrane composite..
03/27/14
20140083119
Compositions of 2,4,4,4-tetrafluorobut-1-ene and cis-1,1,1,4,4,4-hexafluorobut-2-ene
A composition including 2,4,4,4-10-tetrafluorobut-1-ene and cis-1,1,1,4,4,4-hexafluorobut-2-ene, and also the use thereof in particular as a heat transfer fluid. The composition may include: from 1% to 99% of 2,4,4,4-tetrafluorobut-1-ene and from 1% to 99% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 5% to 70% of 2,4,4,4-tetrafluorobut-1-ene and from 30% to 95% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 20% to 65% of 2,4,4,4-tetrafluorobut-1-ene and from 35% to 80% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 25% to 60% of 2,4,4,4-tetrafluorobut-1-ene and from 40% to 75% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 28% to 51% of 2,4,4,4-tetrafluorobut-1-ene and from 49% to 72% of cis-1,1,1,4,4,4-hexafluorobut-2-ene..
03/20/14
20140081414
Electrospun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/20/14
20140080987
Fluoroelastomers
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.
03/20/14
20140080031
Dual layered eptfe polyelectrolyte membranes
A supported membrane for fuel cell applications includes a first expanded polytetrafluoroethylene support and a second expanded polytetrafluoroethylene support. Both the first and second expanded polytetrafluoroethylene supports independently have pores with a diameter from about 0.1 to about 1 microns and a thickness from about 4 to 12 microns.
03/20/14
20140079758
Electrospun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/20/14
20140077419
Fluororesin composite material, cooking utensil, cooker, roller for oa apparatus, belt for oa apparatus, and processes for producing these
A fluorocarbon resin composite includes a fluorocarbon resin layer on a base, in which a fluorocarbon resin constituting the fluorocarbon resin layer is crosslinked by electron beam irradiation, and the base has a desired shape obtained by machining. The fluorocarbon resin is composed of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, polytetrafluoroethylene, or a mixture of the tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and polytetrafluoroethylene.
03/20/14
20140077126
Method of etching a high aspect ratio contact
Methods and an etch gas composition for etching a contact opening in a dielectric layer are provided. Embodiments of the method use a plasma generated from an etch gas composed of c4f8 and/or c4f6, an oxygen source, and a carrier gas in combination with tetrafluoroethane (c2f4) or a halofluorocarbon analogue of c2f4..
03/20/14
20140077124
Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons
Provided are azeotrope-like compositions comprising tetrafluoropropene and hydrofluorocarbons and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.. .
03/20/14
20140077122
Working medium and heat cycle system
A working medium for heat cycle comprising 1-chloro-2,3,3,3-tetrafluoropropene is employed for a heat cycle system (such as a rankine cycle system, a heat pump cycle system, a refrigerating cycle system 10 or a heat transport system).. .
03/20/14
20140075969
Heat-transfer compositions exhibiting improved miscibility with the lubricating oil
The invention relates to the use of 1,1,1,2-tetrafluoroethane for increasing the miscibility of 2,3,3,3-tetrafluoropropene with a lubricating oil, and in particular with a polyalkylene glycol oil. In this regard, the invention provides heat-transfer compositions and also equipment and processes using these compositions..
03/13/14
20140074225
Rotational spun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/13/14
20140073681
Methods of treating alzheimer's disease and pharmaceutical compositions thereof
The present invention describes methods of treating dementia comprising administering an effective daily dose of n-(2-(6-fluoro-1h-indol-3-yl)ethyl-(2,2,3,3-tetrafluoropropoxy)benzylamine to improve or augment the effect of an acetylcholinesterase inhibitor.. .
03/13/14
20140072793
Moisture permeable waterproof composite film and moisture permeable waterproof fabric having moisture permeable waterproof composite film
The objects of the present invention are to provide a moisture permeable waterproof composite film and to provide a moisture permeable waterproof fabric which is constructed to contain the moisture permeable waterproof composite film, each of which being capable of, while retaining the moisture permeability thereof, suppressing deterioration of waterproofness even if external force is applied to these film and fabric. This moisture permeable waterproof composite film is formed of a laminate comprising of at least one layer of porous polytetrafluoroethylene, and at least one layer of porous polyurethane..
03/13/14
20140072694
Rotational spun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/13/14
20140072518
Polytetrafluoroethylene co-polymer emulsions
The present disclosure is directed to a class of fluorinated copolymers, such as a ptfe copolymers, that can be dissolved in low toxicity solvents, such as class iii solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.. .
03/13/14
20140072514
Polytetrafluoroethylene co-polymer emulsions
The present disclosure is directed to a class of fluorinated copolymers, such as ptfe copolymers, that can be dissolved in low toxicity solvents, such as class iii solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.. .
03/13/14
20140069685
Fluorine-containing elastomer composition and insulated wire
A fluorine-containing elastomer composition includes a fluorine-containing resin including a copolymer of tetrafluoroethylene and α-olefin having carbon number of 2 to 4. The copolymer of tetrafluoroethylene and α-olefin having carbon number of 2 to 4 is configured such that a peak integrated value of −132 ppm relative to a peak integrated value 10,000 of −110 to −125 ppm falls within the range of 0.3 to 2.0 in nuclear magnetic resonance analysis..
03/06/14
20140067047
Electrospun ptfe coated stent and method of use
A stent or other prosthesis may be formed by coating a single continuous wire scaffold with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylene (ptfe).
02/20/14
20140052264
Porous, stabilized craniomaxillofacial implants and methods and kits relating thereto
Porous craniomaxillofacial implants may include a plurality of polymeric particles sintered together at a plurality of contact points to form a porous network having pores; and an antioxidant disposed on a surface of at least some of the polymeric particles and/or in the pore of the porous network, so as to stabilize the implants from at least some oxidative damage during storage, transportation, and/or implementation (in vivo and/or ex vivo). Preferably, the polymeric particles include at least one of polyethylene, a polyethylene-polypropylene copolymer, a polyethylene-polybutylene copolymer, polytetrafluoroethylene, and expanded polytetrafluoroethylene..
02/20/14
20140051896
Method for purifying trans-1,3,3,3-tetrafluoropropene
Disclosed is a method for purifying a trans-1,3,3,3-tetrafluoropropene, in which a composition containing trans-1,3,3,3-tetrafluoropropene and at least one impurity selected from the group consisting of c2h3clf2, cf3ch2chclf, cf3ch2chf2, chf2ch═cf2, cf3ch═chcl, cf3ch═ch2, cf3c≡ch, and cis-1,3,3,3-tetrafluoropropene is brought into contact with a solid adsorbent to reduce an impurity content thereof. By this method, it is possible to remove the impurity in trans-1,3,3,3-tetrafluoropropene by a simple operation..
02/20/14
20140051818
Synthesis of high molecular weight poly(2,3,3,3-tetrafluoropropene)
A process of synthesizing poly(2,3,3,3-tetrafluoropropene), comprising reacting 2,3,3,3-tetrafluoropropene monomers in a reaction medium in the presence of an initiator, wherein the initiator is added to the reaction medium in multiple portions at different times during the process.. .


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