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| Number | Title | Issue Date |
| 7851573 | Aqueous polytetrafluoroethylene emulsion, polytetrafluoroethylene fine powder and porous material obtained therefrom To provide an aqueous polytetrafluoroethylene (PTFE) emulsion which does not substantially contain ammonium perfluorooctanoate, and which is obtained by emulsion polymerization. Further, to provide a PTFE fine powder which is obtained from the aqueous PTFE emulsion ... | 12/14/2010 |
| 7820775 | Tetrafluoroethylene polymer and aqueous dispersion thereof The invention provides a TFE polymer capable of providing stretched materials excellent in membrane homogeneity. The present invention is related to a tetrafluoroethylene polymer having stretchability and non-melt-processability and having a standard specific gravit... | 10/26/2010 |
| 7820774 | Ethylene/tetrafluoroethylene copolymer composition The present invention provides an ethylene/tetrafluoroethylene copolymer composition having a high melt flowability while maintaining satisfactory mechanical properties in the obtainable molded product are maintained. The ethylene/tetrafluoroethylene copolymer compo... | 10/26/2010 |
| 7655742 | Method of forming thin film There is provided a method of forming a thin film of vinylidene fluoride homopolymer having crystal form I which is applicable to various substrates in relatively easy way (coating conditions, application method, etc.), a process for preparing a vinylidene fluoride ... | 02/02/2010 |
| 7438995 | Use of partially fluorinated polymers in applications requiring transparency in the ultraviolet and vacuum ultraviolet Disclosed are partially fluorinated and fully fluorinated polymers that are substantially transparent to ultraviolet radiation at wavelengths from approximately 150 nanometer to 260 nanometers. ... | 10/21/2008 |
| 7408011 | Photoresists, fluoropolymers and processes for 157 nm microlithography The invention provides a polymer having (a) at least one repeat unit derived from an ethylenically unsaturated compound having at least one fluorine atom covalently attached to an ethylenically unsaturated carbon atom; and (b) at least one repeat unit derived from a... | 08/05/2008 |
| 7378475 | Process for making vinyl fluoride interpolymers and dispersions thereof Interpolymers of 1-99 mol % vinyl fluoride and 99-1 mol % of at least one highly fluorinated monomer such as tetrafluoroethylene are disclosed. The interpolymers are characterized by the presence of ionic end groups and are prepared by polymerizing VF and fluorinate... | 05/27/2008 |
| 7375159 | Vinylidene fluoridepolymer having a fraction of non-transferred chains and its manufacturing process Blends of PVDF (polyvinylidene fluoride) homopolymer or copolymer with ABC triblock copolymers are useful for manufacturing parts which may be sheets, film, tubes, rods, centrifugal pump components and containers. The PVDF comprises a fraction of non-transferred cha... | 05/20/2008 |
| 7375171 | Process for preparing vulcanizable fluorine-containing elastomer The present invention provides a process for preparing a fluorine-containing elastomer in a high productivity comparable to that of non-iodine transfer polymerization process by carrying out an iodine transfer polymerization at high pressure. The present invention a... | 05/20/2008 |
| 7365122 | Fluoroelastomer composition A fluoroelastomer composition, which comprises 100 parts by weight of vinylidene fluoride-perfluoro(methyl vinyl ether)-tetrafluoroethylene terpolymer or vinylidene fluoride-hexafluoropropene copolymer, and 10-50 parts by weight of liquid fluoroelastomer having a vi... | 04/29/2008 |
| 7354636 | Flexible laminate material for lighter-than-air vehicles A laminate material for lighter-than-air vehicles includes a liquid crystal polymer fiber layer, a polyimide layer secured to the liquid crystal polymer fiber layer; and a polyvinylidene fluoride (PVDF) layer secured to the polyimide layer. The layers are secured to... | 04/08/2008 |
| 7345124 | Process for preparing fluorine-containing polymer The present invention provides a process for preparing a fluorine-containing polymer having few branched chains and little weight change in high temperatures, which is a new process wherein composition distribution substantially does not occur. The fluorine-containi... | 03/18/2008 |
| 7335705 | Thermosetting coating compositions comprising a copolymer formed from chlorotrifluoroethylene and methods of making copolymers formed from chlorotrifluoroethylene Fluoropolymers are disclosed. The fluoropolymers include (i) units derived from a fluoromonomer composition comprising chlorotrifluoroethylene, and (ii) units derived from at least one donor monomer composition. In the disclosed fluoropolymers, units (i) and (ii) ar... | 02/26/2008 |
| 7332555 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7332545 | Fluoropolymers, methods for their production, and thermosetting compositions containing them Fluoropolymers are disclosed. The fluoropolymers include (i) units derived from a fluoromonomer having the formula F2C═CXY, where X is CF3 and Y is either F or CF3, and (ii) units derived from at least one donor monomer. In the dis... | 02/19/2008 |
| 7332554 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7314898 | Microsphere-filled polytetrafluoroethylene compositions The present invention is a composition that includes granular-grade polytetrafluoroethylene and a plurality of microspheres, where the plurality of microspheres have an average specific gravity less than about 0.9 grams per cubic centimeter. ... | 01/01/2008 |
| 7312289 | Fluorine-containing elastomer and its composition A fluorine-containing elastomer having a copolymer composition, which comprises 50-85% by mole of (a) vinylidene fluoride, 0-25% by mole of (b) tetrafluoroethylene, 7-20% by mole of (c) perfluoro(methyl vinyl ether), 3-15% by mole of (d) CF2═CFO[CF... | 12/25/2007 |
| 7312287 | Fluorinated polymers useful as photoresists, and processes for microlithography This invention provides a fluorine-containing copolymer having a repeat unit derived from at least one fluorinated olefin and a repeat unit derived from at least one polycyclic ethylenically unsaturated monomer having pendant hydroxyl or esterified hydroxyl groups, ... | 12/25/2007 |
| 7302869 | Electric starter motor A pinion includes: a first pinion flange portion disposed so as to protrude radially at a front end of a pinion boss portion; and a second pinion flange portion disposed so as to protrude radially facing the first pinion flange portion from an opposite side of the p... | 12/04/2007 |
| 7285612 | Partially fluorinated copolymer based on trifluorostyrene and substituted vinyl compound and ionic conductive polymer membrane formed therefrom A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive polymer membrane, wherein the partially fluorinated copolymer has formula ... | 10/23/2007 |
| 7276287 | Melt-processible poly(tetrafluoroethylene) Melt-processible, thermoplastic poly(tetrafluoroethylene) (PTFE) compositions are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described. ... | 10/02/2007 |
| 7271229 | Processes for producing a fluorosulfonyl group-containing compound and a compound led from the fluorosulfonyl group-containing compound A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl group-containing compound, and a polymer obtainable by polymerizing the sulfonyl... | 09/18/2007 |
| 7271228 | Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts. The compounds comprise at least one perfluorovinyl group and at least one group chosen from —O or one of the groups C≡N, ... | 09/18/2007 |
| 7262257 | Telechelic polymers containing reactive functional groups Telechelic polymers having two reactive functional groups at the same polymer chain end are disclosed. These polymers can be prepared by combining a cycloborane initiator, at least one free radical polymerizable monomer and oxygen to form a polymer segment having a ... | 08/28/2007 |
| 7253357 | Pulsed voltage surge resistant magnet wire A magnet wire including at least one conductor and at least one insulating layer. The insulating layer includes (a) at least a polymeric resin; (b) at least a fluorinated organic filler; and (c) at least a non-ionic fluorinated surfactant. The magnet wire is endowed... | 08/07/2007 |
| 7247691 | Perfluoroalkyl substituted acrylate monomers and polymers thereof Fluoroalkyl amidoalkyl alcohols of the formula are disclosed and their corresponding (meth)acrylate esters. These fluoroalkyl amidoalkyl (meth)acrylate monomers can be copolymerized with a wide variety of convent... | 07/24/2007 |
| 7247690 | Melt-fabricable tetrafluoroethylene/fluorinated vinyl ether copolymer prepared by suspension polymerization Melt-fabricable, tough copolymer of tetrafluoroethylene and fluorinated vinyl ether is produced in a suspension polymerization process by copolymerizing tetrafluoroethylene and fluorinated vinyl ether in a pressurized, agitated reaction vessel which contains aqueous... | 07/24/2007 |
| 7232872 | Polymerization processes The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent. ... | 06/19/2007 |
| 7233068 | Filling small dimension vias using supercritical carbon dioxide Suitable particles may be deposited within an extremely small high-aspect ratio via by flowing the particles in a suspension using supercritical carbon dioxide. The particles may be made up of diblock copolymers or silesquioxane-based materials or oligomers of phobi... | 06/19/2007 |
| 7220487 | Ambient cured flexible fluoroelastomer coatings and coated products The present invention provides an ambient temperature curable fluoroelastomer coatings and coated articles to provide improved elongation, and adhesion to substrates especially flexible elastomeric substrates. The curable coating mixture is a mixture of two parts, p... | 05/22/2007 |
| 7220807 | Process of preparing functional fluoropolymers Functional fluoro-monomers are polymerized with an organoborane functional initiator in the presence of oxygen to yield functional fluoropolymers and copolymers to produce functional polymers having functional groups at the beginning of the polymer chain. ... | 05/22/2007 |
| 7214750 | Polymerization processes The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons. ... | 05/08/2007 |
| 7214410 | Process for selecting solvents for forming films of ferroelectric polymers Disclosed herein is a process of forming a ferroelectric polymer film from a solution, wherein the solvent composition is selected so as to adjust the properties of the film. Films formed by this method have improved properties, particularly with respect to roughnes... | 05/08/2007 |
| 7202299 | Fluoroelastomer composition A fluoroelastomer composition, which comprises 100 parts by weight of vinylidene fluoride-perfluoro(methyl vinyl ether)-tetrafluoroethylene terpolymer or vinylidene fluoride-hexafluoropropene copolymer, and 10–50 parts by weight of liquid fluoroelastomer having a ... | 04/10/2007 |
| 7199198 | Fluororubber base sealant composition and fluororubber base sealant A fluororubber sealant composition includes 100 parts by weight of a fluororubber, which is a copolymer having a cross-linking site derived from a bromine-containing and/or iodine-containing compound, capable of crosslinking with peroxide and having a component unit... | 04/03/2007 |
| 7199199 | Perfluorinated polymers Amorphous perfluorinated homopolymers and copolymers of perfluorodioxoles of formula (IA): wherein R′F is equal to RF or ORF wherein RF is a linear or branched perfluor... | 04/03/2007 |
| 7192646 | Hose construction containing fluoroelastomer composition and fluoroplastic barrier The present invention relates to a hose comprising: a thermoplastic fluoropolymer barrier layer; and a rubber layer adjacent to the barrier layer, the rubber layer comprising 100 parts by weight of an elastomer comprising FKM fluoroelastomer; from about 1 to about 1... | 03/20/2007 |
| 7172810 | Resin compositions, monofilaments, process for producing the same and fishing lines Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing ... | 02/06/2007 |
| 7160926 | Ion exchange fluorocarbon resin membrane An ion exchange fluorocarbon resin membrane having a storage modulus (JIS K-7244), when substituted with tributyl ammonium ions, at a temperature of not less than Tc represented by the following general equations (1-1) to (1-3) of 0.8×106 Pa or more, and... | 01/09/2007 |
