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This page is updated frequently with new Polytetrafluoroethylene-related patent applications. Subscribe to the Polytetrafluoroethylene RSS feed to automatically get the update: related Polytetrafluoroethylene RSS feeds. RSS updates for this page: Polytetrafluoroethylene RSS RSS


Method for producing porous polytetrafluoroethylene membrane

Infection control bedding product

Date/App# patent app List of recent Polytetrafluoroethylene-related patents
07/17/14
20140200310
 Method for producing aqueous polytetrafluoroethylene dispersion patent thumbnailnew patent Method for producing aqueous polytetrafluoroethylene dispersion
The present invention aims to provide a novel method for producing an aqueous dispersion containing non-melt-processable polytetrafluoroethylene particles. The present invention relates to a method for producing an aqueous dispersion containing non-melt-processable polytetrafluoroethylene particles, the method including polymerizing tetrafluoroethylene in an aqueous medium in the presence of perfluoro hexanoic acid or its salt..
07/17/14
20140196840
 Method for producing porous polytetrafluoroethylene membrane patent thumbnailnew patent Method for producing porous polytetrafluoroethylene membrane
Provided is a method including: a step a of extruding a mixture containing a polytetrafluoroethylene (ptfe) fine powder having a standard specific gravity (ssg) of 2.19 or less and a liquid lubricant into a sheet using a flat die so as to obtain a ptfe sheet; a step b of rolling the ptfe sheet by passing the sheet between a pair of rolls in a longitudinal direction of the sheet; a step c of stretching the rolled ptfe sheet in a transverse direction of the sheet; a step d of removing the liquid lubricant from the ptfe sheet; and a step e of stretching the ptfe sheet, from which the liquid lubricant has been removed, both in the longitudinal direction of the sheet and in the transverse direction of the sheet, for example, at an area stretch ratio of 150 to 700, so as to make the sheet porous. According to this production method, it is possible to increase the pf value of the porous ptfe membrane..
07/17/14
20140196215
 Infection control bedding product patent thumbnailnew patent Infection control bedding product
An infection control bedding product such as a pillow, duvet, mattress, cushion or such like having a sealed cover and having a deformable filling material, may comprise a liquid impermeable air permeable microbial barrier vent. The vent includes an oleophobic expanded polytetrafluoroethylene (ptfe) membrane extending past the perimeter of the aperture and a nonwoven layer extending past the perimeter of the aperture.
07/03/14
20140187721
 Resin composition and sliding member using same patent thumbnailResin composition and sliding member using same
Polytetrafluoroethylene is preferred as the fluorine-based resin.. .
06/26/14
20140180402
 Elastomeric leaflet for prosthetic heart valves patent thumbnailElastomeric leaflet for prosthetic heart valves
A leaflet for a prosthetic valve formed of at least one layer that includes a composite material containing at least one expanded fluoropolymer membrane having serpentine fibrils and an elastomer is provided. The fluoropolymer may be polytetrafluoroethylene.
06/26/14
20140178577
 Composite ptfe plating patent thumbnailComposite ptfe plating
The present invention is directed to compositions, baths, and methods for composite plating including polytetrafluoroethylene (ptfe), and more particularly, to compositions, baths, and methods of composite plating with ptfe in a metal or alloy matrix where the materials used in the process contain no or essentially no pfos (perfluorooctane sulfonate) and/or no pfoa (perfluorooctanoic acid).. .
06/26/14
20140174813
 Noise dampening energy efficient tape and gasket material patent thumbnailNoise dampening energy efficient tape and gasket material
A noise dampening tape and gasket material for reducing or preventing unwanted electromagnetic interference from escaping or entering an enclosure. The noise dampening gasket includes an inner core section, a carbon material layer surrounding the inner core section, an insulating layer surrounding the carbon material layer, and a metal shield layer surrounding the insulating layer.
06/19/14
20140172066
 Medical balloon devices and methods patent thumbnailMedical balloon devices and methods
A balloon or balloon cover comprising a composite material having a least one expanded fluoropolymer material and an elastomer is provided. The expanded fluoropolymer material can contain serpentine fibrils.
06/19/14
20140169713
 Sliding bearing having self-lubricating liner patent thumbnailSliding bearing having self-lubricating liner
A sliding bearing having a metallic outer ring and a self-lubricating liner formed on the inner circumferential surface of the outer ring. The self-lubricating liner has a self-lubricating resin composition consisting of a mixture of 60 to 80% by weight of polyetherketone-based resin, 10 to 30% by weight of polytetrafluoroethylene, 5 to 15% by weight of carbon fiber, and not more than 15% by weight of aramid fiber, a total amount of the carbon fiber and the aramid fiber being 10 to 25% by weight.
06/19/14
20140165517
 Filter medium for air filter, air filter unit, and method for producing filter medium for air filter patent thumbnailFilter medium for air filter, air filter unit, and method for producing filter medium for air filter
A filter medium for an air filter unit for collecting dust from an airflow includes a pre-collection layer, a principal collection layer and an air-permeable cover layer. The pre-collection layer collects a part of the dust in the air flow.
06/12/14
20140163137
Non-halogenated flame retardant polycarbonate compounds
A flame retardant polycarbonate compound is disclosed. The compound comprises a polycarbonate and non-halogenated polyphosphazene as a flame retardant, along with talc, polytetrafluoroethylene, and optionally, a potassium salt of perfluorobutane sulfonic acid.
06/12/14
20140163112
Grease-like gel for repelling insects and preventing undesirable behavior in hoofed animals
Grease-like compositions are provided for repelling insects and preventing undesirable behavior in hoofed animals. The compositions utilize nontoxic mineral, synthetic, or vegetable oil based gels containing silica, clay, urea, polytetrafluoroethylene, or metallic soap thickeners and capsaicin..
06/12/14
20140158947
Electrically conductive polyethylene resin composition, electrically conductive polyethylene resin molding, sliding bearing, and sliding sheet
The present invention provides an electrically conductive polyethylene resin composition having a stable volume resistance value and in addition, a low-friction property and a wear-resistant property and a resin molding, a sliding bearing, and a sliding sheet made of the electrically conductive polyethylene resin composition. The electrically conductive polyethylene resin composition contains 100 parts by weight of ultra-high-molecular-weight polyethylene resin which cannot be injection-molded and has a weight average molecular weight of one million to four millions, 2 to 15 parts by weight of ketjenblack, and 0.5 to 5 parts by weight of at least one powder, having an average particle size of 1 to 30 μm, which is selected from among polytetrafluoroethylene resin powder, graphite powder, and silicone resin powder..
06/12/14
20140157677
Motor vehicle window regulator with low friction guide rails
A motor vehicle window regulator in which a matrix coating is applied to a metal blank. The matrix coating is comprised of particles of a fluoropolymer (such as polytetrafluoroethylene) carried in an organic polymer binder.
06/05/14
20140150915
Oscillating tube having a segmented coating for damping the tube
The oscillating tube (10) includes a first end (12), an opposed second end (16), and a fluid conduit (18) defined by the tube extending between the opposed ends (12, 16). A segmented damping coating (20) covers in intimate contact a covered or coated portion (22) of the tube (10) so that the coated portion (22) of the tube includes at least about ten percent of an axial length of the tube and an uncoated portion (34, 36) that is not covered by the segmented damping coating (22) includes greater than about ten percent of an axial length of the tube (10).
05/22/14
20140140647
High strength low friction engineered material for bearings and other applications
A high strength, low friction engineered material includes a low friction material filling interstices of a metal microlattice. The metal typically comprises 5 volume % to 25 volume % and the interstices typically comprise 75 volume % to 95 volume %, based on the total volume of the metal microlattice and the interstices.
05/22/14
20140138181
Sound-transmitting membrane and electronic device equipped with sound-transmitting membrane
A sound-transmitting membrane (1) is provided that allows passage of sounds and prevents passage of foreign matters, the sound-transmitting membrane (1) including a supporting member (12) and a resin porous membrane (11) layered on the supporting member (12) and containing polytetrafluoroethylene as a main component. The supporting member (12) is a nonwoven fabric containing an elastomer.
05/15/14
20140135897
Elastic stent graft
A stent graft including (1) a stent having a wall having at least one opening, an outer surface, and an inner surface and (2) a covering of a composite material having a least one expanded fluoropolymer membrane and an elastomer is provided. The cover can be used to cover the outer and/or the inner surface of the stent.
05/15/14
20140135463
Melt-fabricable perfluoropolymers having improved heat aging property
Heat aging of the composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, the alkyl containing 1 to 5 carbon atoms and melt flowable polytetrafluoroethylene is effective to cause thermal transformation of the composition in the solid state, which is epitaxial co-crystallization of the polymer components of the composition, and other valuable changes, such as increased continuous use temperature.. .
05/15/14
20140133265
Contactless magnetically driven agitation systems
Provided are liquid agitating systems having magnetically actuated agitating members that do not come in contact with internal surfaces of liquid holding vessels. As such, some mechanically weak materials, such as polytetrafluoroethylene and perfluoroalkoxy polymer, may be used for internal surfaces of these vessels.
05/15/14
20140130965
Method of manufacturing a stent-graft prosthesis with two layers of expanded polytetrafluoroethylene
Methods of forming a stent-graft prosthesis including two layers of eptfe with at least one stent positioned between or encapsulated within the eptfe layers include utilizing one or more direct heating elements that are positioned within or in close proximity to a mandrel upon which the stent-graft prosthesis is placed in order to reduce the temperature and/or time required to couple the two eptfe layers together. An internal heating element may be positioned within a lumen of the mandrel and/or an external heating element may circumferentially surround the mandrel in close proximity thereto.
05/15/14
20140130470
Porous polytetrafluoroethylene membrane and air filter medium
Provided is a porous polytetrafluoroethylene (ptfe) membrane having a pf value of 36 or more and a mass per unit area of 0.90 g/m2 or less. The pf value is determined by the following equation: pf value={−log(pt (%)/100)/(pl(pa)/9.8)}×100.
05/15/14
20140130321
Burnishing tool and method for burnishing
A method for providing a surface treatment along the surface of a work piece, using a burnishing tool having a tool head comprising a bearing for supporting a rolling element and an encasement for supporting the bearing. The bearing is formed from a polymer or polymer resin such as, but not limited to, polytetrafluoroethylene based resin, ultra-high-molecular-weight polyethylene based resin..
04/24/14
20140109641
Fluorocarbon 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
20140106084
Fluorocarbon 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.
04/10/14
20140100665
Non-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
20140096682
Fluorinated 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
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.
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..
03/20/14
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
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.
03/13/14
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
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.. .
03/06/14
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
20140048351
Acoustic cover assembly
An acoustic protective cover assembly comprising a porous membrane and an acoustic gasket is disclosed. The porous membrane is bonded to the acoustic gasket at a peripheral region, the membrane is left unhanded at a central region.
02/13/14
20140042835
Equipment including epitaxial co-crystallized material
An electric submersible pump motor can include a housing; and a hermetically sealed cavity defined at least in part by the housing that includes at least one material susceptible to hydrolysis, and a polymeric material that includes epitaxial co-crystals of perfluoroalkoxy (pfa) and polytetrafluoroethylene (ptfe). Various other apparatuses, systems, methods, etc., are also disclosed..
02/13/14
20140042096
Separation membrane module for processing of oil-containing waste water and method for processing oil-containing waste water
Provided is a separation membrane module which is suitable for filtration of oil-containing wastewater. The separation membrane module for oil-containing wastewater treatment separates water-insoluble oil from oil-containing wastewater that has high turbidity and/or high temperature.
02/13/14
20140042077
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140042076
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041911
Flat dam and method for manufacturing chip package using the same
Disclosed herein is a flat dam formed in a package region of an insulation layer provided on a board to limit movement of an underfill and made of the hydrophobic material including any one of or at least two of perfluorooctyl acrylate (pfac), polypropylene, polytetrafluoroethylene (ptfe), and fluorine compound.. .
02/13/14
20140041789
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s) and method to fabricate
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041788
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041506
Coated musical instrument string
Disclosed is a method for making a coated musical instrument string comprising plating a musical instrument string in a composite electroless plating bath at a specified bath temperature for a specified bath time to create a coated musical instrument string to create wound musical instrument string. The musical instrument string may be plain wire or wound wire made of copper and or steel alloys.
02/06/14
20140034315
Radial conduit cutting system and method
What is presented is a metal magnalium thermite pellet that is used to create heated gas. The metal magnalium thermite pellet is made to be inserted into the cutting apparatus that is used for cutting a conduit for oil, gas, mining, and underwater pressure sealed tool applications.
01/23/14
20140024563
Anti-wear coatings for compressor wear surfaces
Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll or rotary compressor.
01/23/14
20140023895
Gas-permeable filter provided with oil repellency
A gas-permeable filter provided with oil repellency is provided. The gas-permeable filter includes a porous membrane having a surface coated with an oil-repellent agent.
01/23/14
20140023540
Anti-wear coatings for scroll compressor wear surfaces
Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll compressor.
01/02/14
20140001664
Matrix band for dental applications
A matrix band for dental applications including a base material and a coating. The base material has an outer surface and a tooth contact surface as well as a perimeter.
01/02/14
20140000229
Composite microporous filter material
The composite microporour filter material comprises a base-cloth layer, an upper adhesion layer attached to a top side of the base-cloth layer, and a lower adhesion layer attached to a bottom side of the base-cloth layer. The base-cloth layer is made of either polymide yarn base-cloth, polysulfoneamide yarn base-cloth, or polytetrafluoroethylene filament base-cloth.
12/26/13
20130340761
Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask
The present invention provides a vent assembly suitable for use with a respiratory mask of the type used in cpap treatment. In one embodiment the vent is made of a thin air permeable membrane.
12/19/13
20130337271
Sliding material composition and sliding member
It is an object of the invention to provide a sliding material composition and a sliding member capable of achieving low friction property at starting time and during sliding and also being excellent in abrasion resistance, especially when a counterpart sliding member is a rubber-based material. The invention relates to a sliding material composition for use in a sliding member whose counterpart sliding member is configured of rubber, the sliding material composition comprising a binder resin, 5 to 25 vol % of an nω-monoacyl basic amino acid, 5 to 25 vol % of molybdenum disulfide, and 5 to 20 vol % of polytetrafluoroethylene..
12/12/13
20130330524
Protective covers and related fabrics
A protective cover includes a textile layer and an air permeable, moisture-vapor-transmissive, expanded polytetrafluoroethylene membrane layer attached to said textile layer, the cover having an mvtr rating of at least 4000 g/m2/day.. .
12/05/13
20130323447
Fiber reinforced shaped articles and process for making same
Blow molded articles are made from a polymeric composition containing a mixture of polyphenylene sulfide resins. For instance, the polymeric composition may contain a linear polyphenylene sulfide resin combined with a branched polyphenylene sulfide resin.
11/28/13
20130316173
Coated steel sucker rods and process for manufacture of same
In a process for applying a friction-resistant coating to a steel sucker rod, the rod is passed, in sequence, through a surface preparation stage (for example, scale removal, shot peening, or other suitable method), an adhesive application stage (to enhance the strength of the coating's bond to the rod), an extrusion stage (in which the rod is passed through a die in conjunction with a flow of melted polymeric coating material), and a cooling (coating solidification) stage. Typically, the radial thickness of the coating will be between 0.125 and 0.375 inches.
11/28/13
20130312936
Heat dissipating member and method for producing the same
The present invention provides a heat dissipating member having excellent heat dissipation properties and suitable for use in an oil environment. The present invention is a heat dissipating member including: a porous base material containing a fluorine resin and a thermally-conductive filler; and an oil contained in pores of the porous base material.
11/21/13
20130309412
Uv curable self-bonding silicone rubber
A method for manufacturing a composite article of polytetrafluoroethylene and silicone includes: (a) providing a uv-curable silicone: (b) applying the uv-curable silicone to a polytetrafluoroethylene backing; and (c) exposing the uv-curable silicone to uv radiation sufficient to cure the silicone.. .
11/21/13
20130306358
Circuit board and method of manufacturing same
Provided is a method of manufacturing a circuit board including preparing a board structural body (11) and covering a conductor circuit element (13) on an outermost layer of the board structural body (11) with a cover film (14), wherein a heat treatment is performed while having a release material (15) interposed between the cover film (14) and a heat-processing device. The release material (15) is a laminate at least including, sequentially from the cover film toward the heat-processing device, a low friction film (16) selected from an ultrahigh-molecular-weight polyethylene film and a polytetrafluoroethylene film, a first aluminum foil (17), a first high-density polyethylene film (18a), a second high-density polyethylene film (18b), and a second aluminum foil (19).
11/14/13
20130304229
Bone regeneration using biodegradable polymeric nanocomposite materials and applications of the same
A structure of, and a method of producing, a biocompatible structure for bone and tissue regeneration are disclosed. The method includes dissolving a polyurethane polymer in methanol, adding hydroxyapatite (hap) nanoparticles to form a uniformly distributed mixture, applying the mixture to a polytetrafluoroethylene (ptfe) surface to form a polymer film, cutting the polymer film into strips, stacking the strips with layers of bone particles disposed therebetween, coating the stacked strips and layers by the mixture and allowing it to dry, adding bone particles to the coating, and plasma treating the structure to form the biocompatible structure.
11/14/13
20130303672
Polycarbonate resin composition, molded article and structure member for solar photovoltaic power generation
Provided are: a polycarbonate-based resin composition, including: (a) 100 parts by mass of a resin mixture formed of: 30 to 100 mass % of a pc-pos copolymer (a-1) which has constituent units represented by a general formula (i) and a general formula (ii), and in which an average repetition number n of organosiloxane constituent units in the general formula (ii) is 70 to 500; and 70 to 0 mass % of an aromatic polycarbonate resin (a-2) except the pc-pos copolymer (a-1); (b) 0.01 to 0.15 part by mass of an alkaline (earth) metal salt of an organic sulfonic acid; (c) 0.1 to 1 part by mass of a polytetrafluoroethylene having a fibril-forming ability; and (d) 2 to 15 parts by mass of titanium dioxide particles each having, on an outermost surface thereof, a coating layer formed of a polyol free of a nitrogen atom; a molded article obtained by molding the resin composition; and a structure member for solar photovoltaic power generation formed of the molded article. The polycarbonate-based resin composition, molded article, and structure member for solar photovoltaic power generation each have excellent flame retardancy and excellent tracking resistance without impairing a low-temperature impact characteristic which a pc-pos copolymer has..
11/07/13
20130294002
Protective covers
An enhanced protective cover includes a top and bottom textile layer and an air permeable, moisture-vapor-transmissive, expanded polytetrafluoroethylene membrane layer located between the two textile layers. The cover exhibits an mvtr rating of at least 4000 g/m2/day.
10/31/13
20130288007
Methods and apparatus for casting sol-gel wafers
A mold for casting sol-gel wafers is provided. The mold may be formed of multiple low-friction layers, for example, layers made of polytetrafluoroethylene (e.g., teflon™).
10/24/13
20130281579
Dispersion spun fluoropolymer fiber prepared from non-melt-processible polytetrafluoroethylene and perfluoroalkoxy
A dispersion spun fluoropolymer fiber prepared from non-melt-processible polytetrafluoroethylene particles and perfluoroalkoxy particles.. .
10/24/13
20130281558
Polytetrafluoroethylene mixture
Provided is a material that can be easily biaxially oriented, homogeneously stretched even with a high draw ratio, and formed into a polytetrafluoroethylene porous membrane with low pressure loss. The present invention relates to a polytetrafluoroethylene mixture comprising: a modified polytetrafluoroethylene; and a fibrillable polytetrafluoroethylene homopolymer, the modified polytetrafluoroethylene having an extrusion pressure to a cylinder, at a reduction ratio of 1600, of 70 mpa or higher..
10/17/13
20130273343
Protective undergarment
An insert for a protective garment, the insert having a fabric having at least 45 percent by weight of expanded polytetrafluoroethylene fibers, the fabric having a 2-grain v-50 fragmentation resistance of at least 700 feet per second and a fast-2 bending rigidity of less than 40 micronewtonmeters.. .


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Polytetrafluoroethylene topics: Polytetrafluoroethylene, Tetrafluoroethylene, Tetrafluoro, Homogeneous, Fluoropolymer, Gel Formulation, Surfactant, Carbon Film, Fragmentation, Silicon Wafer, High Density, Aqueous Solution, Polyurethane, Colloidal Silica, Thoracic Aortic Aneurysm

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