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Tetrafluoro patents

      

This page is updated frequently with new Tetrafluoro-related patent applications.




 Rotary joint for a high pressure fluid patent thumbnailRotary joint for a high pressure fluid
The rotary joint for a high pressure fluid, comprising a stator body, a rotor body, a fluid seal interposed between the stator body and the rotor body, and a friction reducer interposed between the stator body and the rotor body, the friction reducer comprising at least a first plain bearing for sustaining axial loads, and at least a second plain bearing for sustaining bending loads, the first and second bearings being made of a polytetrafluoroethylene-based (ptfe) material.. .
Alfa Gomma S.p.a.


 Tetrafluoropropene compositions and uses thereof patent thumbnailTetrafluoropropene compositions and uses thereof
The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a tetrafluoropropene and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents..
The Chemours Company Fc, Llc


 Ionomer-membrane water processing apparatus patent thumbnailIonomer-membrane water processing apparatus
This disclosure provides water processing apparatuses, systems, and methods for recovering water from wastewater such as urine. The water processing apparatuses, systems, and methods can utilize membrane technology for extracting purified water in a single step.
Paragon Space Development Corporation


 Fluorinated resin composition patent thumbnailFluorinated resin composition
Copolymer (a): a copolymer comprising units derived from the following monomer (a) and units derived from the following monomer (b), and optionally containing units derived from the following monomer (c), wherein the content of the units derived from the following monomer (c) is from 0 to 0.05 mol % based on the total of all units, and it has carbonyl groups; copolymer (b): a copolymer comprising units derived from the following monomer (a), units derived from the following monomer (b) and units derived from the following monomer (c), wherein the content of the units derived from the following monomer (c) is from 0.1 to 2 mol % based on the total of all units; volume flow rate: extrusion rate (mm3/sec.) at the time of extruding the fluorinated resin composition from an orifice having a diameter of 2.1 mm and a length of 8 mm under a pressure of 68.7n/cm2 at a temperature of the melting point+50° c.; monomer (a): tetrafluoroethylene; monomer (b): at least one member selected from ethylene, hexafluoropropylene and a perfluoro(alkyl vinyl ether); monomer (c): a monomer having two or more polymerizable carbon-carbon double bonds.. .

 Blended fluoropolymer compositions patent thumbnailBlended 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.
Whitford Corporation


 Fluorinated copolymer patent thumbnailFluorinated copolymer
Monomer (a): tetrafluoroethylene. Monomer (b): ethylene.

 Azeotrope-like compositions of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane patent thumbnailAzeotrope-like compositions of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane
Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.. .
Honeywell International Inc.


 Articles including expanded polytetrafluoroethylene membranes with serpentine fibrils having a discontinuous fluoropolymer layer thereon patent thumbnailArticles including expanded polytetrafluoroethylene membranes with serpentine fibrils having a discontinuous fluoropolymer layer thereon
Articles comprising an expanded polytetrafluoroethylene membrane having serpentine fibrils and having a discontinuous coating of a fluoropolymer thereon are provided. The fluoropolymer may be located at least partially in the pores of the expanded fluoropolymer membrane.
W. L. Gore & Associates, Inc.


 Lattice patent thumbnailLattice
The invention relates to medical devices and methods of using them. The devices are prostheses which can be percutaneously deliverable with (or on) an endovascular catheter or via other surgical or other techniques and then expanded.
W. L. Gore & Associates, Inc.


 Heat-shrinkable tube having tearability patent thumbnailHeat-shrinkable tube having tearability
Provided is a heat-shrinkable tube having tearability, which is made of a fluororesin, particularly, a tube having excellent tear straightness and high heat-shrinkability at low temperature. The tube is a heat-shrinkable tube having tearability, which includes, as a base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, and as a resin other than the base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, in which a thickness of an entanglement unit of a polymer observed at a cross-section in a longitudinal direction of the tube is 9 μm less, and has excellent tear straightness and high heat-shrinkability..
Junkosha Inc.


Process for producing 2,3,3,3-tetrafluoropropene

The present invention relates, in part, to the discovery that the presence of hf in a hcfc-244bb feedstream in a reaction for the preparation of hfo-1234yf results in selectivity changeover from hfo-1234yf to hcfo-1233xf. By substantially removing hf, it is shown that the selectivity to hfo-1234yf via dehydrochlorination of hcfc-244bb is improved..
Honeywell International Inc.

Corrosion-resistant magnetic article

A magnetic article with a corrosion resistant barrier formed from a poly (tetrafluoro-p-xylene) conformal coating or from a parylene conformal coating having a melting point of at least about 430° c. And a moisture vapor transmission less than about 0.5 g-mm/m2/day at 90% rh and 37° c., the conformal coating being covered with a polysulfone thermoplastic overlayer..
Medtronic Xomed, Inc.

Copolymer having low isoprenoid content

A copolymer has low levels of isoprenoid (short chain branching) structures. A process for producing the copolymer having low isoprenoid content involves contacting at least one isoolefin monomer with at least one multiolefin and/or β-pinene monomer in the presence of at least one lewis acid and at least one initiator in a diluent.
Arlanxeo Singapore Pte. Ltd.

Methods for removing acidic impurities from halogenated propenes

This invention pertains to a method for removing acidic impurity from halogenated olefins, especially methods for removing acidic impurity from halogenated propenes, and even more particularly to methods for removing acidic impurity from 1,3,3,3-tetrafluoro-1-propene (hfo-1234ze), 2,3,3,3-tetrafluoro-1-propene (hfo-1234yf), 1-chloro-3,3,3-trifluoro-1-propene (hcfo-1233zd), and 2-chloro-3,3,3-trifluoro-1-propene (hcfo-1233xf). The method is conducted by passing the halogenated olefin stream, in liquid or gas form, through a solid adsorbent bed, which contains at least one acid reactive agent..
Honeywell International, Inc.

Conformable microporous fiber and woven fabrics containing same

Expanded polytetrafluoroethylene (eptfe) monofilament fibers and woven fabrics formed from the eptfe fillers are provided, the eptfe fibers have a substantially rectangular configuration, a density less than about 1.0 glee, and an aspect ratio greater than 15. Additionally, the eptfe fibers are microporous and have a node and fibril structure.
W. L. Gore & Associates, Inc.

2,3,3,3-tetrafluoro-1-propene as diluent for the preparation of novel butyl rubbers

The invention relates to an efficient polymerization process and its use to produce novel copolymers with a specific microstructure. In particular, the invention relates to butyl rubbers with novel microstructure, preferably those obtainable by copolymerization of monomer mixtures comprising isobutylene and isoprene in diluents comprising 2,3,3,3-tetrafluoro-1-propene.
Arlanxeo Singapore Pte. Ltd.

Hydrofluorinated olefins (hfo's) as diluents for butyl rubber production

A process for producing a copolymer involves contacting at least one isoolefin monomer with at least one multiolefin and/or β-pinene monomer in the presence of at least one lewis acid and at least one initiator in a diluent. The diluent contains a hydrofluorinated olefin (hfo) comprising a tetrafluorinated propene.
Arlanxeo Singapore Pte. Ltd.

Diluent for the production of butyl rubber

Methods are provided to efficiently produce butyl rubber via a slurry polymerization process. The process comprises providing at least two monomers, wherein at least one monomer is an isoolefin and at least one monomer is a multiolefin.
Arlanxeo Singapore Pte. Ltd.

Ring opening of epoxidized fatty acid esters

This invention relates to a ring opening method. The method includes reacting an epoxidized fatty acid ester with an alcohol to open an epoxy ring of the ester.
Solazyme, Inc.

Laminate

The present invention aims to provide a laminate in which a fluororesin layer and a fluororubber layer are firmly bonded. The present invention relates to a laminate including: a fluororubber layer (a); and a fluororesin layer (b) stacked on the fluororubber layer (a), the fluororubber layer (a) being formed from a fluororubber composition, the fluororubber composition containing a fluororubber, a low molecular weight polytetrafluoroethylene, and a multifunctional compound, the amount of the multifunctional compound being 5 parts by mass or more relative to 100 parts by mass of the fluororubber..
Daikin Industries, Ltd.

Power storage device, lithium-ion secondary battery, electric double layer capacitor and lithium-ion capacitor

One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device.
Semiconductor Energy Laboratory Co., Ltd.

Fixing member, fixing device, and image forming apparatus

A fixing member is provided, including a release layer containing a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (pfa), wherein a content of the perfluoroalkyl vinyl ether (pave) based on all pfas in the release layer is 3.0 mol % or more and 5.8 mol % or less, and an elastic layer having an indentation elastic modulus eits at a surface thereof and an indentation elastic modulus eitc at a position in a depth of 50 μm from the surface, eits and eitc being measured at a temperature of 150° c., and eits is larger than eitc and eitc being 17 mpa or more and 24 mpa or less.. .
Canon Kabushiki Kaisha

Composition based on 2,3,3,3-tetrafluoropropene

A composition including a lubricant based on polyol esters (poes) or polyvinyl ether (pve) and a refrigerant f including from 1 to 99% by weight of 2,3,3,3-tetrafluoropropene (hfo-1234yf) and from 1 to 99% by weight of trans-1,3,3,3-tetrafluoropropene (trans-hfo-1234ze). Also, the use of the composition in refrigeration, air conditioning and heat pumps..
Arkema France

Lithium-sulfur batteries

A lithium-sulfur electrochemical cell includes a cathode including elemental sulfur; an anode including elemental lithium; and an electrolyte including a salt and a non-polar fluorinated ether solvent. Alternatively, a lithium-sulfur electrochemical cell may include an anode; an electrolyte; and a cathode including a polytetrafluoroethylene-coated carbon paper and sulfur..
Uchicago Argonne, Llc

Fluorocarbon molecules for high aspect ratio oxide etch

Etching gases are disclosed for plasma etching channel holes, gate trenches, staircase contacts, capacitor holes, contact holes, etc., in si-containing layers on a substrate and plasma etching methods of using the same. The etching gases are trans-1,1,1,4,4,4-hexafluoro-2-butene; cis-1,1,1,4,4,4-hexafluoro-2-butene; hexafluoroisobutene; hexafluorocyclobutane (trans-1,1,2,2,3,4); pentafluorocyclobutane (1,1,2,2,3-); tetrafluorocyclobutane (1,1,2,2-); or hexafluorocyclobutane (cis-1,1,2,2,3,4).
American Air Liquide, Inc.

Air permeable oven tray and use

An oven tray formed from a sheet of glass fiber or other non-metallic temperature resistant mesh generally having a horizontal warp and weft, coated with a fluoropolymer such as polyftetrafluoroethyleneor, silicone compound, etc. That provides a low friction coefficient coupled with high temperature resistance and light weight.
Planit Products Ltd

Hydrophilic porous polytetrafluoroethylene membrane (i)

Wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous ptfe membranes and a method of filtering fluids through such membranes..

Hydrophilic porous polytetrafluoroethylene membrane (ii)

Wherein rf, rh1, rh2, y, m, n, and o are as described herein. Also disclosed are a method of preparing hydrophilic porous ptfe membranes and a method of filtering fluids through such membranes..



Tetrafluoro topics:
  • Tetrafluoro
  • Tetrafluoroethylene
  • Polytetrafluoroethylene
  • Hydrochloric Acid
  • Sulfuric Acid
  • Boric Acid
  • Phosphoric Acid
  • Carbon Nanotube
  • Hydrophobic Coating
  • Superhydrophobic Coating
  • Gel Formulation
  • Chloric Acid
  • Tetrafluoroboric Acid
  • Polyglycerol
  • Ultracapacitors


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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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