Tetrafluoro

Tetrafluoro-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).

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NEW Heat transfer fluid
May 25, 2017 - N°20170145276

Compositions which are based on tetrafluoropropene and more particularly relates to compositions inclduing 60% to 90% by weight of 2,3,3,3-tetrafluoropropene and 10% to 40% by weight of at least one compound selected from difluoroethane and difluoromethane, which can be used as a heat transfer fluid. The compositions may include 60% to 79% by weight of 2,3,3,3-tetrafluoropropene and 21% to 40% by weight of a compound selected from difluoroethane ...
NEW Dielectric substrate comprising unsintered polytetrafluoroethylene and methods of making the same
May 25, 2017 - N°20170145182

In an embodiment, a dielectric substrate comprises an unsintered polytetrafluoroethylene; and a high dielectric constant filler, wherein the dielectric constant of the high dielectric constant filler is greater than or equal to 35; wherein the dielectric substrate has a specific gravity of greater than or equal to 90% of a calculated theoretical density of the dielectric substrate, wherein the theoretical specific gravity ...
NEW Fluorocopolymers for coating applications
May 25, 2017 - N°20170145132

Disclosed are copolymers formed by copolymerization of: (1) one or more hydrofluoroolefin monomer(s) selected from the group consisting of hydrofluoroethylenes, hydrofluoropropenes, hydrofluorobutenes, hydrofluoropentenes and combinations of these, and preferably selected from 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, with said 1,3,3,3-tetrafluoropropene preferably comprising, consisting essentially of or consisting of trans-1,3,3,3-tetrafluoropropene, and combinations of these, and (2) one or more chlorofluoroethylene monomers, preferably chlorotrifluoroethylene (“...
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NEW Protective covers
May 25, 2017 - N°20170144406

A multi-layer fabric configured for use as a 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. At least the top layer is a textile layer made of woven or non-woven basalt fibers. The bottom layer may also be a basalt layer. The cover exhibits ...
Process for making 2,3,3,3-tetrafluoropropene and/or vinylidine fluoride
Honeywell International Inc.
May 18, 2017 - N°20170137353

Disclosed is a process for the formation of a mixture of the compounds 2,3,3,3-tetrafluoropropene (1234yf) and vinylidine fluoride, comprising pyrolyzing 1,1,2-trifluoro-2-trifluoro-methyl-cyclobutane under conditions effective to produce a reaction product comprising 1234yf and vinylidine fluoride in a 1234yf:vinylidine fluoride molar ratio of from about 0. 5 to about 1. 2.
Process for producing 2,3,3,3-tetrafluoropropene
Honeywell International Inc.
May 18, 2017 - N°20170137352

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which preferably includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows the production of a 1234yf product with lower the levels of 1225ye and/or trifluoropropene, ...
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Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers
Cable Components Group, Llc
May 11, 2017 - N°20170130022

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base ...
Resin powder, method for its production, composite, molded product, method for producing ceramic molded product, ...
Asahi Glass Company, Limited
May 11, 2017 - N°20170130009

To provide a method capable of producing, by means of mechanical pulverization, a resin powder having a high bulk density and an average particle size of at most 50 μm from resin particles containing a fluorocopolymer as the main component and having a melting point of from 260 to 320° c., such as pfa. The method is to obtain a ...
Unitized lip seal for wash pipe stuffing box sealing system
Freudenberg Oil & Gas, Llc
May 04, 2017 - N°20170122055

A wash pipe stuffing box sealing assembly includes a wash pipe stuffing box with a mandrel sleeve disposed in a bore there through. A plurality of stuffing box adapter rings are disposed in the wash pipe stuffing box and surrounding the mandrel sleeve. An annular seal ring is disposed between a pair of the adapter rings, and includes an annular ...
Transparent composite material as cladding material for architectural features in building construction
Sc Innovation, Llc
May 04, 2017 - N°20170121977

A composite material may be used as a building material to provide desirable visible aesthetics, such as in a roof or facade. The composite material may include two or more materials, wherein a first material provides desirable qualities for appearance and a second material provides desirable qualities for strength or other characteristics desirable of a building material. Each of the ...
Advanced system for electrochemical cell
Xergy Inc.
April 27, 2017 - N°20170115035

A high water transfer electrochemical compressor is described having a ‘n’ transfer of water through the ion conducting membrane of greater than one. This may be accomplished by reducing the equivalent weight of the ion conducting polymer, such as an ionomer to less than about 900 and/or by reinforcing the low equivalent weight ionomer with a support material, ...
Molded body and method for producing same
Nichias Corporation
April 27, 2017 - N°20170114258

A formed body including: a polytetrafluoroethylene or a modified polytetrafluoroethylene; and an unmodified polymerization inhibitor, the content of the unmodified polymerization inhibitor being 0. 02 to 15 wt %.
Particles comprising polytetrafluoroethylene and perfluoropolyether
The Chemours Company Fc, Llc
April 27, 2017 - N°20170114190

Novel ptfe/pfpe particles and method for making the same are disclosed. The pfpe is absorbed into the ptfe particles. The ptfe/pfpe particles find utility as additives to be combined with other polymers.
Tetrafluoro Patent Pack
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Low gloss, air permeable, abrasion resistant, printable laminate containing an asymmetric membrane and articles made ...
W.l. Gore & Associates, Inc.
April 27, 2017 - N°20170113433

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, ...
Electret
W.l. Gore & Associates, Inc.
April 27, 2017 - N°20170113170

The electret is obtained by depositing polytetrafluoroethylene having a melting point of 35° c. Or higher and 320° c. Or lower on a carrier and imparting an electrostatic charge to at least one of the carrier and the polytetrafluoroethylene.
Electrolyte solute, electrolyte, and high-voltage supercapacitor
Shenzhen Capchem Technology Co., Ltd.
April 20, 2017 - N°20170110260

The present invention relates to the electrochemical field, particularly to an electrolyte solute and an electrolyte that are used for a high-voltage supercapacitor, and a high-voltage supercapacitor using the electrolyte. The anion of the electrolyte solute may be one or more selected from tetrafluoroborate, hexafluorophosphate, bis(trifluoromethylsulfonyl) imide, tris (trifluoromethylsulfonyl) methyl and perfluoroalkyl sulfonate, and the cation may be n-methyl-1,4...
Polytetrafluoroethylene aqueous dispersion
Daikin Industries, Ltd.
April 20, 2017 - N°20170107368

The present invention provides a polytetrafluoroethylene aqueous dispersion containing high-molecular-weight, significantly small polytetrafluoroethylene particles and having excellent dispersion stability. The present invention relates to an aqueous dispersion containing polytetrafluoroethylene particles containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene. The polytetrafluoroethylene particles have a volume average ...
Polytetrafluoroethylene powder
Daikin Industries, Ltd.
April 20, 2017 - N°20170107309

The present invention provides a polytetrafluoroethylene powder having high dispersibility in lubricants. The polytetrafluoroethylene powder includes polytetrafluoroethylene containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and has a specific surface area of 32 m2/g or larger.
Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment
Solvay Specialty Polymers Italy S.p.a.
April 20, 2017 - N°20170107305

The invention mainly pertains to a method for heat treating a composition [composition (c)] which contains at least one melt-processible perfluoropolymer [polymer (f)] formed of tetrafluoroethylene (tfe) copolymer with one or more perfluorinated comonomers [comonomer (f)] containing at least one unsaturation of ethylene type in amounts from 0. 5% to 13% by weight, preferably from 0. 6% to 11% by weight, and more preferably from 0. 8% to 9% ...
Showerhead with reduced backside plasma ignition
Applied Materials, Inc.
April 13, 2017 - N°20170101713

Embodiments of the present disclosure relate to a showerhead assembly for use in a processing chamber. The showerhead assembly includes a porous insert disposed in a space defined between a gas distribution plate and a base plate to moderate the corrosive radicals resulting from plasma ignition to reduce particle issues and metal contamination in the chamber. The porous insert is ...
Working medium and heat cycle system
Applied Materials, Inc.
April 13, 2017 - N°20170101568

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).