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Tetrafluoro patents



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


Low gloss, air permeable, abrasion resistant, printable laminate containing an asymmetric membrane and articles made…

Date/App# patent app List of recent Tetrafluoro-related patents
07/24/14
20140207075
 Skived film for covering surface of plug for medical purposes, plug for medical purposes using said film, pre-filled syringe using said plug and method for producing said film patent thumbnailnew patent Skived film for covering surface of plug for medical purposes, plug for medical purposes using said film, pre-filled syringe using said plug and method for producing said film
Provided is a ptfe skived film capable of exhibiting, with a single layer, sliding properties, barrier properties with regard to a liquid contact surface, and excellent tear resistance during injection molding. This skived film is characterized by being obtained by cutting a polytetrafluoroethylene block or a modified polytetrafluoroethylene block subjected to a thermal fusion treatment under reduced pressure or subjected to a pressurized thermal fusion treatment after being subjected to fusion under reduced pressure..
07/24/14
20140205815
 Low gloss, air permeable, abrasion resistant, printable laminate containing an asymmetric membrane and articles made therefrom patent thumbnailnew patent Low gloss, air permeable, abrasion resistant, printable laminate containing an asymmetric membrane and articles made therefrom
Asymmetric expanded polytetrafluoroethylene (eptfe) membranes that contain multiple layers of eptfe where at least one layer of eptfe has a microstructure different from the microstructure of a second eptfe layer. In exemplary embodiments, the asymmetric membrane contains a first eptfe layer that has an “open” microstructure and a second eptfe layer that has a less open, or “tight” microstructure.
07/24/14
20140205757
 Blended fluoropolymer compositions patent thumbnailnew patent Blended fluoropolymer compositions
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.
07/24/14
20140205548
 Aerosol for controlling indoor insect pest patent thumbnailnew patent Aerosol for controlling indoor insect pest
And more preferably at least one compound selected from the group consisting of imiprothrin, tetramethrin, prallethrin, transfluthrin, metofluthrin, dimefluthrin, 2,3,5,6-tetrafluoro-4-methylbenzyl 2,2-dimethyl-3-(1-propenyl)cyclopropanecarboxylate and the like.. .
07/17/14
20140200310
 Method for producing aqueous polytetrafluoroethylene dispersion patent thumbnailMethod 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 thumbnailMethod 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 thumbnailInfection 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.
07/10/14
20140194544
 Foaming agents and compositions containing fluorine substituted olefins, and methods of foaming patent thumbnailFoaming agents and compositions containing fluorine substituted olefins, and methods of foaming
Various uses of fluoroalkenes, including tetrafluoropropenes, and monchlorotrifluoropropenes in a variety of applications, including as blowing agents are disclosed.. .
07/10/14
20140193706
 Electrolytic solution for nonaqueous electrolytic solution cell, and nonaqueous electrolytic solution cell patent thumbnailElectrolytic solution for nonaqueous electrolytic solution cell, and nonaqueous electrolytic solution cell
Disclosed is an electrolyte for nonaqueous electrolyte cells, which contains a nonaqueous organic solvent and a solute. This electrolyte is characterized by containing as additives at least one compound selected from a first compound group consisting of bis(oxalato)borate, difluoro(oxalato)borate, tris(oxalato)phosphate, difluorobis(oxalato)phosphate, and tetrafluoro(oxalato)phosphate, and at least one compound selected from a second compound group consisting of a sulfonate group-containing imide salt, which is represented by the general formula m[r1oso2nso2or2]n, and a phosphoryl group-containing imide salt, which is represented by the general formula m[r3r4opnpor5r6]m.
07/10/14
20140191154
 Compositions comprising 1,1,1,2,2-pentafluoropropane and a fluoroolefin and uses thereof patent thumbnailCompositions comprising 1,1,1,2,2-pentafluoropropane and a fluoroolefin and uses thereof
Compositions are disclosed comprising: (a) 1,1,1,2,2-pentafluoropropane; (b) a compound selected from the group consisting of 2,3,3,3-tetrafluoropropene, e-1,3,3,3-tetrafluoropropene, and 1,1,1-trifluoropropene; and optionally (c) a compound selected from the group consisting of 1,1,1,2-tetrafluoroethane and difluoromethane. Such compositions are useful in methods to produce cooling, produce heat, transfer heat, form a foam, produce aerosol products, for recovering heat, and for replacing existing refrigerants.
07/03/14
20140187721
Resin composition and sliding member using same
Polytetrafluoroethylene is preferred as the fluorine-based resin.. .
07/03/14
20140187658
Reduced-voc and non-voc blowing agents for making expanded and extruded thermoplastic foams
Process for producing a thermoplastic polymer foam article includes preparing an expandable polymeric formulation comprising a thermoplastic polymer and a blowing agent blend, forming the formulation into an expandable bead, and expanding the expandable bead to form a thermoplastic polymer foam article. The blowing agent blend includes methyl formate, hydrocarbon, and either carbon dioxide or 1,1,1,2-tetrafluoroethane (hfc-134a).
06/26/14
20140180402
Elastomeric 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
20140179961
Synthesis of 3,3,3-trifluoropropyne
In accordance with the present invention, processes of synthesizing 3,3,3-trifluoropropyne from 1,3,3,3-tetrafluoropropene, 1-chloro-3,3,3-trifluoropropene, and/or 1,1,1,3,3-pentafluoropropane are provided.. .
06/26/14
20140179887
Synthesis of 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers
In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided.. .
06/26/14
20140178577
Composite 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
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.
06/26/14
20140174767
Method for controlling and/or preventing a fire in a vehicle air-conditioning system
A method for controlling and/or preventing a fire in a vehicle air-conditioning system which contains 2,3,3,3-tetrafluoro-1-propene as a coolant includes bringing the components of the air-conditioning system containing the coolant into contact with an extinguishing agent which contains an aqueous solution or suspension of a compound containing calcium and a gelling extinguishing agent additive.. .
06/19/14
20140172066
Medical 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
20140171697
Fluoroalkyl iodide and its production process
A process for producing a fluoroalkyl iodide as a telomer rf(cf2cf2)ni (wherein rf is a c1-10 fluoroalkyl group, and n is an integer of from 1 to 6) by telomerization from a fluoroalkyl iodide represented by the formula rfi (wherein rf is as defined above) as a telogen and tetrafluoroethylene (cf2cf2) as a taxogen, which comprises a liquid phase telomerization step of supplying a homogeneous liquid mixture of the telogen and the taxogen from the lower portion of a tubular reactor, moving the mixture from the lower portion towards the upper portion of the reactor in the presence of a radical initiator over a retention time of at least 5 minutes while the reaction system is kept in a liquid phase state under conditions where no gas-liquid separation will take place, so that the taxogen supplied to the reactor is substantially consumed by the reaction in the reactor, and drawing the reaction product from the upper portion of the reactor.. .
06/19/14
20140170041
Methods for removing potassium, rubidium, and cesium, selectively or in combination, from brines and resulting compositions thereof
The invention generally relates to methods of removing potassium, rubidium, and/or cesium, selectively or in combination, from brines using tetrafluoroborates. Also disclosed are methods of producing potassium, rubidium, and/or cesium chlorides using ionic liquids and exchange media.
06/19/14
20140169713
Sliding 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
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
20140162144
Method for producing lithium tetrafluoroborate solution
Disclosed is a production method of a lithium tetrafluoroborate solution for use as a lithium battery electrolytic solution, including: a reaction step of forming lithium tetrafluoroborate by reaction of lithium fluoride and boron trifluoride in a chain carbonate ester solvent and thereby obtaining a reaction solution of the lithium tetrafluoroborate dissolved in the chain carbonate ester solvent; a water removal step of adding a water removing agent to the reaction solution; an acidic impurity removal step of removing an acidic impurity component from the reaction solution by concentrating the reaction solution after the water removal step; and a dilution step of diluting the concentrated solution after the acidic impurity removal step. It is possible by this method to obtain the lithium tetrafluoroborate solution whose acidic impurity content and water content are reduced to be 50 mass ppm or lower and 15 mass ppm or lower, respectively..
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).
06/05/14
20140150648
Fluorinated ethylene-propylene polymeric membranes for gas separations
A fluorinated ethylene-propylene polymeric membrane comprising a copolymer comprising 2,3,3,3-tetrafluoropropene and vinylidene fluoride is disclosed. The fluorinated ethylene-propylene polymeric membranes of the invention are especially useful in gas separation processes in air purification, petrochemical, refinery, and natural gas industries..
06/05/14
20140150646
Blend polymeric membranes containing fluorinated ethylene-propylene polymers for gas separations
The present invention generally relates to gas separation membranes and, in particular, to high selectivity fluorinated ethylene-propylene polymer-comprising polymeric blend membranes for gas separations. The polymeric blend membrane comprises a fluorinated ethylene-propylene polymer and a second polymer different from the fluorinated ethylene-propylene polymer.
06/05/14
20140150492
Use of alternate refrigerants in optimized cascade process
Methods and systems for liquefying natural gas using nonflammable refrigerants are provided. Methods of liquefaction include cooling a natural gas stream via indirect heat exchange with a first nonflammable refrigerant selected from the group consisting of: difluoromethane, pentafluoromethane, trifluoromethane, hexafluoroethane, tetrafluoroethane, pentafluorethane, trifluoroethane, pentafluoroethane, any derivative thereof, and any combination thereof during a first refrigeration cycle; and cooling the natural gas stream via indirect heat exchange with a second refrigerant during a second refrigeration cycle..
05/29/14
20140147745
Binder for storage battery device
To provide a binder for a storage battery device, whereby good adhesion is obtainable, and it is possible to realize good charge and discharge characteristics in a secondary battery by well suppressing swelling of an electrode by an electrolytic solution. A binder for a storage battery device, which is made of a fluorinated copolymer comprising repeating units (a) derived from tetrafluoroethylene and repeating units (b) derived from propylene, wherein the molar ratio (a)/(b) is from 60/40 to 75/25, and the total of the repeating units (a) and (b) is at least 90 mol % in all repeating units..
05/29/14
20140147480
Synthesis and use of trans-1,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers
A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture.


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This listing is a sample listing of patent applications related to Tetrafluoro for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Tetrafluoro with additional patents listed. Browse our RSS directory or Search for other possible listings.
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