Addition Polymer Is Perhalogenated Patents (Class 428/422)
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Patent number: 7252886Abstract: To provide a curable composition which gives a cured fluorinated product excellent in transparency, light resistance (particularly against a short wavelength light having a wavelength of from 200 to 500 nm) and heat resistance, and having a controlled volume particularly thickness. A curable composition which contains a perfluorocyclic polyene having alicyclic structures which comprise carbon atoms and which may contain an oxygen atom and having at least two carbon-carbon double bonds, at least one of which is a polymerizable carbon-carbon double bond in which at least one of the two carbon atoms forming the polymerizable carbon-carbon double bond is a carbon atom forming the alicyclic structure, and a polymerization initiator; a cured fluorinated product obtained by curing the curable composition; an optical material made of the cured fluorinated product; and a light emitting device encapsulated with the cured fluorinated product in a light-transmitting manner.Type: GrantFiled: August 22, 2006Date of Patent: August 7, 2007Assignee: Asahi Glass Company, LimitedInventor: Norihide Sugiyama
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Patent number: 7244502Abstract: The present invention provides a composition for use in forming an abrasion-resistant easy-to-clean coating on a substrate. The composition according to the invention includes a mixture of a fluorocarbon polymer component and an enamel-forming component. The enamel-forming component includes at least a first lead-free and cadmium-free glass frit. The first lead-free and cadmium-free glass frit includes from about 30% to about 50% P2O5, from about 15% to about 30% Al2O3, and from about 2% to about 40% X2O where X=Na and/or K. The present invention also provides a method of forming an abrasion-resistant easy-to-clean coating on a substrate. The method includes applying the composition according to the invention to a substrate and sintering the applied composition to fuse an abrasion-resistant easy-to-clean coating to the substrate.Type: GrantFiled: February 9, 2005Date of Patent: July 17, 2007Assignee: Ferro France - S.A.R.L.Inventors: Alain Aronica, David Coutouly, Damian Macaya, Remy Caisse
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Patent number: 7244503Abstract: To provide a PTFE laminated article having a sufficient adhesive strength and a PTFE backing sheet having a low permeability, in which a specific weight of a PTFE sheet can be maintained high. A specific weight of the PTFE sheet is maintained at 2.175 or more by carrying out thermo-fusing of the PTFE sheet and a film or sheet of heat-meltable resin such as PFA after interposing a layer of PTFE fine particles between them or by carrying out treatment for preventing a rapid temperature lowering after the thermo-fusing without interposing the layer of PTFE fine particles.Type: GrantFiled: October 13, 2005Date of Patent: July 17, 2007Assignee: Daikin Industries, Ltd.Inventors: Kazuo Ishiwari, Tatsuro Uchida, Masahiko Yamada
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Patent number: 7241480Abstract: There is provided a laminate comprising a hard coat layer having the outermost surface to which slipperiness has been imparted. The laminate comprises a transparent substrate and a hard coat layer provided on said transparent substrate. The hard coat layer is formed of a cured product of a composition comprising a fluorine-modified urethane acrylate and/or a polydimethylsiloxane having a polyether-modified acryl or polyether group.Type: GrantFiled: September 20, 2004Date of Patent: July 10, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventor: Hiroyuki Hashimoto
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Publication number: 20070154704Abstract: A fluoropolymer coated film comprising polymeric substrate film and fluoropolymer coating on the polymeric substrate film. The fluoropolymer coating comprises fluoropolymer selected from homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride polymer blended with compatible adhesive polymer comprising functional groups selected from carboxylic acid, sulfonic acid, aziridine, anhydride, amine, isocyanate, melamine, epoxy, hydroxy, anhydride and mixtures thereof. The polymeric substrate film comprises functional groups on its surface that interact with the compatible adhesive polymer to promote bonding of the fluoropolymer coating to the substrate film.Type: ApplicationFiled: December 20, 2006Publication date: July 5, 2007Inventors: Michael Debergalis, Larry Glen Snow
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Patent number: 7235302Abstract: A multi-layer structure includes a fluoropolymer bonded to a substrate. The structure is prepared by exposing a bonding composition to actinic radiation, such as ultraviolet radiation, to form the bond. The bonding composition includes a light-absorbing compound and an electron donor. The bonding composition includes non-adhesive materials.Type: GrantFiled: August 25, 2003Date of Patent: June 26, 2007Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Trang D. Pham, Andrew M. Hine
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Patent number: 7230038Abstract: Fluoropolymers are made by admixing tetrafluoroethylene, hexfluoropropylene, and vinylidene fluoride; reacting the reaction admixture to generate a set of fluoropolymeric oligomers; irradiating the fluoropolymeric oligomeric precursor admixture (preferably with electron beam radiation) to form free radical sites on individual fluoropolymeric oligomers of the set and generate thereby a set of free radical oligomer derivatives in the fluoropolymeric oligomeric precursor admixture; and reacting the fluoropolymeric oligomeric precursor admixture to derive the fluoropolymer compound from the free radical oligomer derivatives. In a second approach, fluoropolymers are made by admixing tetrafluoroethylene, hexfluoropropylene, and vinylidene fluoride and irradiating the admixture.Type: GrantFiled: June 30, 2004Date of Patent: June 12, 2007Assignee: Freudenberg-NOK General PartnershipInventor: Edward Hosung Park
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Patent number: 7228877Abstract: A flexible fuel hose having improved fuel vapor barrier properties wherein the fuel hose comprises a first fluoropolymer layer forming a first barrier tubular structure and a second fluoropolymer layer forming a second tubular structure around the first barrier tubular structure; and a method for the manufacture of such hose are described.Type: GrantFiled: April 13, 2004Date of Patent: June 12, 2007Assignee: Dayco Products, LLCInventor: Jerry Shifman
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Patent number: 7226658Abstract: A magnetic steel sheet with an insulating coating having a good punchability, high sliding performance, excellent handleability in processing, and good uniformity and adhesiveness is achieved by forming a chromium-free insulating coating containing 20 parts by mass or more and 90 parts by mass or less of fluorocarbon resin as a top layer coating of the magnetic steel sheet, and preferably making the kinetic friction coefficient of a surface of the insulating coating 0.3 or less.Type: GrantFiled: April 10, 2002Date of Patent: June 5, 2007Assignee: JFE Steel CorporationInventors: Kazumichi Sashi, Yuka Komori, Masaki Kawano, Atsuhito Honda
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Patent number: 7223475Abstract: Carrier comprised of a core, a polymer coating, and wherein said coating contains a conductive polypyrrole contained in a carbon black matrix; or a polyaniline contained in a carbon black matrix.Type: GrantFiled: September 10, 2003Date of Patent: May 29, 2007Assignee: Xerox CorporationInventors: Samir Kumar, Thomas J. Budny, Brian S. Giannetto, Brian E. Moore, Scott M. Silence, Michael J. Duggan, Bernard A. Kelly
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Patent number: 7220487Abstract: 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, part A containing a solution of a fluoroelastomer containing a specified acid number, and the other part B providing a curing component which is a mono-primary amine containing silane or condensate.Type: GrantFiled: January 18, 2005Date of Patent: May 22, 2007Assignee: Lord CorporationInventor: James R. Halladay
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Patent number: 7214452Abstract: Exposure systems may use pellicles made of perfluoropoly-ether. These materials may exhibit reduced darkening upon repeated exposures compared to other materials.Type: GrantFiled: November 7, 2002Date of Patent: May 8, 2007Assignee: Intel CorporationInventors: James M. Powers, Robert P. Meagley
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Patent number: 7211362Abstract: Disclosed are fuser members, apparatus and methods which employ compositions that can be varied to provide a fused toner image with a selected gloss level. In embodiments, the apparatus and methods employ a fusing member having an outer contact surface thereon which contacts a previously fused toner image under conditions of elevated temperature and pressure. The contact surface has a Gardner G60 gloss of up to about 35 and is comprised of a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin, such as polyfluoroethylenepropylene (FEP). In embodiments, the contact surface comprises a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin including subunits of: —(CH2 CF2)x-, —(CF2CF(CF3))y-, and —(CF2 CF2)z-, wherein: x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 89 mole percent, z is from 10 to 89 mole percent, and x+y+z equals 100 mole percent.Type: GrantFiled: October 27, 2004Date of Patent: May 1, 2007Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Andrew Ciaschi, Joseph A. Pavlisko, Robert A. Lancaster
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Patent number: 7211308Abstract: Multilayer sheets and films are provided that include a layer of a fluoropolymer material and a layer of a thermoplastic polymer material. More particularly, an adhesive material and multilayered structures formed therewith are provided in which a layer of a fluoropolymer material is attached to a layer of another thermoplastic polymer. The adhesive material is useful to adhere layers of dissimilar polymeric materials that are otherwise incompatible, and achieves a significantly improved interlayer bond strength between fluoropolymer and thermoplastic polymer layers as compared to the art.Type: GrantFiled: February 20, 2004Date of Patent: May 1, 2007Assignee: Honeywell International Inc.Inventors: Sangkeun Rhee, Michael P. Della Vecchia
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Patent number: 7208555Abstract: The present invention provides a polyvinylidene fluoride copolymer capable of forming a uniform film, a solution of the copolymer and a thin film comprising the polyvinylidene fluoride copolymer. The polyvinylidene fluoride copolymer of the present invention is characterized in that the ratio of the scattered-light intensity (I) for a 15% solution of the polyvinylidene fluoride copolymer in dimethylformamide solvent to the scattered-light intensity (I0) for dimethylformamide, (I/I0), is 10 or lower. The polyvinylidene fluoride copolymer solution comprises the polyvinylidene fluoride copolymer and an organic solvent capable of dissolving the copolymer.Type: GrantFiled: September 17, 2003Date of Patent: April 24, 2007Assignee: Kureha Chemical Industry Company, LimitedInventors: Masahito Tada, Takumi Katsurao, Tsukasa Ikeda, Kazuyuki Suzuki
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Patent number: 7192646Abstract: 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 15 parts by weight, per 100 parts by weight of elastomer, of at least one acid acceptor selected from the group consisting of magnesium oxide, calcium hydroxide, litharge, dibasic lead phosphite, calcium oxide, and zinc oxide; from about 1 to about 6 parts by weight, per 100 parts by weight of elastomer, of at least one diamine curative; and from about 1 to about 10 parts by weight, per 100 parts by weight of elastomer, of at least one of a hydrotalcite or tricalcium aluminate hexahydrate; wherein the weight ratio of the at least one acid acceptor to the at least one hydrotalcite ranges from about 1 to about 5.Type: GrantFiled: June 4, 2003Date of Patent: March 20, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Ramon Joseph DiMascio, Mervin Victor Pilkington
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Patent number: 7172800Abstract: A damper component for absorbing and dissipating vibration and/or noise resonating from a device is provided. The damper component includes a viscoelastic damper layer, and a continuous constraining layer intimately contacting and encasing the damper layer. The constraining layer has a greater stiffness and higher modulus of dynamic shearing elasticity than the damper layer. The constraining layer is a molded sheet molding compound that is substantially immiscible with the viscoelastomer to provide a discrete interface between the constraining layer and the damper layer.Type: GrantFiled: November 3, 2003Date of Patent: February 6, 2007Assignee: Material Sciences CorporationInventor: Daniel Boss
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Patent number: 7169469Abstract: A particle-removing wafer is disclosed which is suitable for removing particles from a wafer support surface such as a wafer chuck used to support semiconductor wafers during the testing of IC devices on the wafers, for example. The particle-removing wafer includes a support body on which is provided a particle-adherent layer having a particle-adherent surface to which particles adhere when the particle-adherent surface is placed into contact with the particles. Consequently, upon subsequent placement of a production wafer on the wafer chuck, particles which may otherwise induce cracking of the wafer are no longer present on the chuck.Type: GrantFiled: February 27, 2004Date of Patent: January 30, 2007Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Guan Heng Liu, Tain Show Lin
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Patent number: 7160623Abstract: Melt-processible, thermoplastic poly(tetrafluoroethylene) (PTFE) compositions are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.Type: GrantFiled: December 19, 2002Date of Patent: January 9, 2007Assignee: Eidgenossische Technische Hochschule ZurichInventors: Paul Smith, Jeroen Visjager, Cees Bastiaansen, Theodorus Tervoort
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Patent number: 7140413Abstract: A fluoropolymer is modified by contacting it with a modifying composition preparable from components comprising a phase transfer catalyst and at least one of a sulfide or disulfide salt, and heating the modifying composition. The modified fluoropolymer is useful in the preparation of composite articles.Type: GrantFiled: October 12, 2005Date of Patent: November 28, 2006Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Gerald Rainer Adalbert Hofmann
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Patent number: 7108921Abstract: The present invention is directed to a golf ball comprising at least one interface between a first crosslinkable material and a second crosslinkable material. The first crosslinkable material comprises a polydiene homopolymer or copolymer. The second material comprises a fluoropolymer.Type: GrantFiled: May 14, 2004Date of Patent: September 19, 2006Assignee: Acushnet CompanyInventor: Michael J. Sullivan
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Patent number: 7108912Abstract: A polytetrafluoroethylene (PTFE) fiber includes a filament obtained by partially slitting an oriented PTFE film in a lengthwise direction of the film. Emboss processing is conducted linearly along the lengthwise direction of the film and like a zigzag shape or a convexo-concave shape in a width direction of the film, followed by slitting, whereby the filament includes a network structure in which single fibrils that are opened partially are arranged regularly. A PTFE short fiber is obtained by cutting the above filament and includes a branch structure. Thereby, a PTFE fiber with a small average fineness of single fibrils, a uniform fineness and a single-peak distribution with the peak at a center of fineness and with a high production yield and uniform and stable branch structure can be provided and a method for manufacturing the PTFE fiber can be provided.Type: GrantFiled: March 8, 2005Date of Patent: September 19, 2006Assignee: Yeu Ming Tai Chemical Industrial Co., Ltd.Inventors: James Huang, Chin-Chun Chou, Chin-Cha Chou, Shia-Chung Chen, Wen-I Kuo, Lei-Ti Huang
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Patent number: 7108889Abstract: There is provided a technique for interleaving glass sheets (which may or may not be provided with low-E coatings thereon) during shipment, transport, storage, and/or the like. In certain example embodiments, the glass sheet interleaving material includes a mixture of: polymer inclusive beads or particles of material such as polymethymethacrylate, and a stearate such as an acid stearate or the metal salt of an acid stearate. The interleaving material mixture may be applied to the glass sheets in any suitable manner.Type: GrantFiled: May 25, 2004Date of Patent: September 19, 2006Assignee: Guardian Industries Corp.Inventor: John R. Bohland
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Patent number: 7105229Abstract: A particle coated with a nonlamellar material such as a nonlamellar crystalline material, a nonlamellar amorphous material, or a nonlamellar semi-crystalline material includes an internal matrix core having at least one a nanostructured liquid phase, or at least on nanostructured liquid crystalline phase or a combination of the two is used for the delivery of active agents such as pharmaceuticals, nutrients, pesticides, etc. The coated particle can be fabricated by a variety of different techniques where the exterior coating is a nonlamellar material such as a nonlamellar crystalline material, a nonlamellar amorphous material, or a nonlamellar semi-crystalline material.Type: GrantFiled: December 15, 2004Date of Patent: September 12, 2006Assignee: Lyotropic Therapeutics, Inc.Inventor: David Anderson
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Patent number: 7094469Abstract: A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is formed from a monomer having formula: [T—SO2Y—SO2T?]?M+ in which —T and T? are identical or different and comprise an organic radical bearing at least one active polymerization function such as an unsaturation or a ring that can be opened; —M+ comprises an inorganic cation.Type: GrantFiled: August 28, 2001Date of Patent: August 22, 2006Assignee: Mykrolis CorporationInventor: Wilson Moya
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Patent number: 7087694Abstract: The invention relates to fluorinated copolymers resulting from the polymerization of a polyfluorinated monomer, a (meth)acrylate amino alcohol, vinyl acetate and a silane monomer in a distillable organic solvent, aqueous compositions containing them, and their use for treating solid substrates, notably building materials.Type: GrantFiled: November 13, 2001Date of Patent: August 8, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Didier Juhue, Martial Pabon, André Kowalik, Jean-Marc Corpart
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Patent number: 7087305Abstract: Disclosed are fuser members, apparatus and methods which employ compositions that can be varied to provide a fused toner image with a selected gloss level. In embodiments, the apparatus and methods employ a fusing member having an outer contact surface thereon which contacts a previously fused toner image under conditions of elevated temperature and pressure. The contact surface has a Gardner G60 gloss of up to about 35 and is comprised of a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin, such as polyfluoroethylenepropylene (FEP). In embodiments, the contact surface comprises a fluorocarbon thermoplastic random copolymer co-cured with a fluorinated resin including subunits of: —(CH2CF2)x-, —(CF2CF(CF3))y-, and —(CF2CF2)z-, wherein: x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 89 mole percent, z is from 10 to 89 mole percent, and x+y+z equals 100 mole percent.Type: GrantFiled: May 30, 2002Date of Patent: August 8, 2006Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Andrew Ciaschi, Joseph A. Pavlisko, Robert A. Lancaster
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Patent number: 7083856Abstract: A golf ball including a core having a first outer surface; a cover; and an intermediate layer disposed between the core and the cover, the intermediate layer including a non-ionic hydrophobic stiff fluoropolymer having a surface energy of less than about 75 dyne/cm2 and having a second outer surface; wherein at least one of the first or second outer surfaces are treated with an functional silane such that a sufficient number of surface amine, hydroxyl, carboxylic acid, or epoxy groups are available for binding to an adjacent layer.Type: GrantFiled: April 2, 2004Date of Patent: August 1, 2006Assignee: Acushnet CompanyInventors: Murali Rajagopalan, Pamela V. Arnold
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Patent number: 7056578Abstract: A layer for an article, including a fluoroelastomer, and at least about 25 percent by volume nonfibrillatable and autoadhesive plastic particles.Type: GrantFiled: October 23, 2003Date of Patent: June 6, 2006Assignee: Eastman Kodak CompanyInventors: Jerry A. Pickering, Theodora Miller, Thomas M. Plutchak
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Patent number: 7045208Abstract: A synthetic resin molded material characterized in that a thin film made of an oxide of at least one metal selected from the group consisting of Si, Zr, Ti, Ta, Hf, Mo, W. Nb, Sn, In, Al and Zn, is formed by a dry method on a synthetic resin substrate having hydrophobicity, and a method for its production.Type: GrantFiled: August 17, 2004Date of Patent: May 16, 2006Assignee: Asahi Glass Company Ltd.Inventors: Kazuo Harada, Atsushi Hayashi, Tatsuo Momii, Teruo Takakura, Seitoku Kaya
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Patent number: 7045044Abstract: A dispersion composition comprising 100 parts by weight of a specific perfluorocarbon-based copolymer containing functional groups and 10 to 10,000 parts by weight of a specific liquid fluoro-oligomer(s). The composition of the present invention is useful as a material for producing, for example, a fluorine-containing cation-exchange membrane having excellent functions imparted thereto.Type: GrantFiled: September 27, 2001Date of Patent: May 16, 2006Assignee: Asahi Kasei Chemicals CorporationInventor: Yoshimichi Nakayama
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Patent number: 7033672Abstract: An optically transparent conductive material is used for static dissipation of a cover material for an optical switching device. The optically transparent conductive material is deposited directly or indirectly on the cover material. The optically transparent conductive material forms an electrically continuous film. The optically transparent conductive material can also be used for anti-reflection.Type: GrantFiled: March 19, 2002Date of Patent: April 25, 2006Assignee: Analog Devices, Inc.Inventors: John R. Martin, Maurice Karpman, Lawrence E. Felton
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Patent number: 7029752Abstract: A plastic container for liquid medicine, which, concerning the effective components of liquid medicine, is capable of prevention of deterioration in quality due to mixing of oxygen and water vapor, prevention of variation in concentration due to water volatilization and moisture absorption, etc. A plastic container for liquid medicine, which is a plastic container internally coated with DLC (diamond-like carbon) film wherein water vapor permeability is 0–0.006 g/container/day and oxygen permeability is 0–0.011 ml/container/day, such properties being obtained by optimizing the three conditions, composition, density and film thickness of the DLC film.Type: GrantFiled: February 22, 2001Date of Patent: April 18, 2006Assignee: Mitsubishi Shoji Plastics CorporationInventors: Kenichi Hama, Tsuyoshi Kage
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Patent number: 7029736Abstract: The present invention relates to a hose construction containing a thermoplastic fluoropolymer barrier and an epichlorohydrin rubber layer. The hose comprises (A) a rubber layer comprising (1) 100 parts by weight of elastomer comprising epichlorohydrin rubber; and (2) from about 10 to about 100 parts by weight, per 100 parts by weight of elastomer, of silica; wherein the rubber layer is cured with from about 0.1 to about 1.8 parts by weight, per 100 parts by weight of elastomer, of at least one peroxide; (B) a barrier layer adjacent to the rubber layer, the barrier layer comprised of at least one thermoplastic fluoropolymer.Type: GrantFiled: June 10, 2003Date of Patent: April 18, 2006Assignee: The Goodyear Tire & Rubber CompanyInventor: Carol Lynn Ainsworth
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Patent number: 7026036Abstract: Single coat coating systems (22), as well as articles coated with such non-stick coating systems, are provided. The single coat system includes a fluoropolymer copolymer (14a), such as fluoropolymer terpolymer including tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride monomers, with fluoropolymer copolymers are referred to collectively as THV. The single coat system exhibits excellent substrates adhesion and release properties, is resistant to separation failure at the interface between the binder (12) and fluoropolymer components (14a), and exhibits adhesion to smooth substrates (16). The single coat system may also include a high level of fillers to provide increased damage resistance without compromising the above benefits.Type: GrantFiled: August 16, 2001Date of Patent: April 11, 2006Assignee: Whitford CorporationInventors: Lawrence D. Leech, Daniel C. Chung, Michael W. Miller
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Patent number: 7026052Abstract: The present invention pertains to a processing method to produce a porous polymer film that consists of sp2C—X and HC-sp3C?—X bonds (wherein, X?H or F), and exhibits at least a crystal melting temperature, (“Tm”). The porous polymer films produced by this invention are useful for fabricating future integrated circuits (“IC's”). The method described herein is useful for preparing the porous polymer films by polymerizing reactive intermediates, formed from a first-precursor, with a low feed rate and at temperatures equal to or below a melting temperature of intermediate (T1m). Second-precursors that do not become reactive intermediates or have an incomplete conversion to reactive intermediates are also transported to a deposition chamber and become an inclusion of the deposited film. By utilizing a subsequent in-situ, post treatment process the inclusions in the deposited film can be removed to leave micro-pores in the resultant film.Type: GrantFiled: October 4, 2002Date of Patent: April 11, 2006Assignee: Dielectric Systems, Inc.Inventors: Chung J. Lee, Atul Kumar
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Patent number: 7022402Abstract: An asymmetric multi-layer insulative film of improved internal adhesive strength is made by combining a layer of polyimide and a high-temperature bonding layer, the high-temperature bonding layer being derived from a high temperature base polymer made of poly(tetrafluoroethylene-co-perfluoro[alkyl vinyl ether]) (PFA) and optionally blended with from 0–60 weight percent poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP). The polyimide and high-temperature bonding layer laminate optionally also contains a layer of unsintered, partially sintered, or totally sintered polytetrafluoroethylene (PTFE) bonded directly to the high-temperature bonding layer. In addition, the polyimide high-temperature bonding layer laminate may be adhered to a poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP) adhesive primer layer to more effectively bond the polyimide core layer to the high-temperature bonding layer.Type: GrantFiled: July 14, 2003Date of Patent: April 4, 2006Assignee: E. I. du Pont de Nemours and CompanyInventor: Philip Roland Lacourt
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Patent number: 6994908Abstract: To provide a PTFE laminated article having a sufficient adhesive strength and a PTFE backing sheet having a low permeability, in which a specific weight of a PTFE sheet can be maintained high. A specific weight of the PTFE sheet is maintained at 2.175 or more by carrying out thermo-fusing of the PTFE sheet and a film or sheet of heat-meltable resin such as PFA after interposing a layer of PTFE fine particles between them or by carrying out treatment for preventing a rapid temperature lowering after the thermo-fusing without interposing the layer of PTFE fine particles.Type: GrantFiled: July 22, 1999Date of Patent: February 7, 2006Assignee: Daikin Industries, Ltd.Inventors: Kazuo Ishiwari, Tatsuro Uchida, Masahiko Yamada
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Patent number: 6991809Abstract: A particle is disclosed that comprises a first volume of hydrophobe-rich material with tunable dissolution and solubilization characteristics and a distinct second volume of nanostructured nonlamellar liquid crystalline material, said second volume containing said first domain and being capable of being in equilibrium with said first volume. Preferably, the nanostructured nonlamellar liquid crystalline material is capable of being in equilibrium with a polar solvent or a water-immiscible solvent or both.Type: GrantFiled: June 21, 2002Date of Patent: January 31, 2006Assignee: Lyotropic Therapeutics, Inc.Inventor: David Anderson
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Patent number: 6986947Abstract: A fluoropolymer is modified by contacting it with a modifying composition preparable from components comprising a phase transfer catalyst and at least one of a sulfide or disulfide salt, and heating the modifying composition. The modified fluoropolymer is useful in the preparation of composite articles.Type: GrantFiled: October 9, 2003Date of Patent: January 17, 2006Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Gerald Rainer Adalbert Hofmann
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Patent number: 6962752Abstract: A curable composition comprising: (A) a branched polyfluorodialkenyl compound represented by a general formula (1): CH2?CH—(X)a-Rf1-(X?)a—CH?CH2??(1) wherein, X and X? are bivalent groups such as —CH2— and —CH2O—, a represents, independently, either 0 or 1, and Rf1 is a specific bivalent fluorine-containing group, (B) a branched polyfluoromonoalkenyl compound represented by a general formula (2): Rf2-(X?)a—CH?CH2??(2) wherein, X? and a are as defined above, and Rf2 is a specific fluorine-containing group, (C) an organohydrogensiloxane compound with at least two hydrogen atoms bonded to silicon atoms, and (D) a platinum group metal catalyst; as well as a low bleeding gel type cured product obtained by curing such a composition, and an electrical or electronic component sealed or encapsulated using such a cured product. The gel type cured product displays very little bleeding of free oil constituents from the gel as a result of stress such as pressure fluctuation or heat history.Type: GrantFiled: January 9, 2003Date of Patent: November 8, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Fukuda, Mikio Shiono
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Patent number: 6960377Abstract: A flexible fuel hose having improved fuel vapor barrier properties wherein the fuel hose includes a fluoropolymer barrier layer forming an inner tubular structure, a second synthetic elastomer tubular structure around the first fluoropolymer barrier layer, and a protective cover; and a method for the manufacture of such hose are described.Type: GrantFiled: April 13, 2004Date of Patent: November 1, 2005Assignee: Dayco Products, LLCInventor: Jerry Shifman
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Patent number: 6956078Abstract: An aqueous dispersion composition of about 30 to about 70 weight % non-melt-processible fluoropolymer particles having a standard specific gravity (SSG) of less than 2.225 and about 2 to about 11 weight % surfactant based on the weight of said fluoropolymer comprising a compound or mixture of compounds of the formula: R(OCH2CH2)nOH wherein R is a branched alkyl, branched alkenyl, cycloalkyl, or cycloalkenyl hydrocarbon group having 8-18 carbon atoms and n is an average value of 5 to 18. The fluoropolymer particles of the dispersion comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. Preferably, the aqueous dispersion composition comprises about 45 to about 65 weight % non-melt-processible fluoropolymer particles.Type: GrantFiled: March 13, 2002Date of Patent: October 18, 2005Assignee: E.I. du Pont de Nemours and CompanyInventors: Robert John Cavanaugh, Clay Woodward Jones, Kazuo Konabe, Daniel N. Levy, Philippe Andre Fernand Thomas, Theodore A. Treat
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Patent number: 6949278Abstract: A water-repellent sheet has a water-repellent layer that is effectively protected from friction damage by a protective film which does not deadhere during compression bonding of the water-repellent sheet to an application surface. The protective film is easily removable after completion of compression bonding application of the water-repellent sheet to an application surface. The water-repellent sheet with a protective film contains a base layer 3 and a water-repellent layer 4 fixedly disposed on one surface of the base layer 3. A protective film 5 is bonded to the other major surface of the water-repellent layer 4. The water-repellent layer 4 contains a fluorocarbon-based polymer binder and a fluorocarbon-based resin powder dispersed in the fluorocarbon-based polymer binder and the protective film 5 is removable in such a way that a water-repellent layer 4 remains on the base layer 3 after removal of the protective film.Type: GrantFiled: September 9, 2003Date of Patent: September 27, 2005Assignee: 3M Innovative Properties CompanyInventor: Tsuneyoshi Saitoh
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Patent number: 6939593Abstract: This invention relates to medical devices containing melt-processible polytetrafluoro-ethylene (PTFE) and methods of making same.Type: GrantFiled: August 27, 2001Date of Patent: September 6, 2005Assignee: SciMed Life Systems, Inc.Inventor: Lixiao Wang
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Patent number: 6927006Abstract: A fuser member having a polyimide substrate, and thereover, an outer layer with from about 61 to about 99 volume percent fluorocarbon.Type: GrantFiled: May 28, 2003Date of Patent: August 9, 2005Assignee: Xerox CorporationInventors: Patrick J. Finn, Robert S. Pawlik, Elizabeth L. Barrese, David J. Gervasi, Pat Goode, Santokh S. Badesha
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Patent number: 6924036Abstract: Compositions based on PTFE, homopolymer or modified, comprising for 100 parts of the component 1) PTFE: 1) an aqueous nanodispersion of said homopolymer or modified PTFE, having a primary particle diameter from 5 to 100 nm; 2) from 3 to 45 parts by weight of a surfactant or surfactant mixtures; 3) from 0.2 to 20 parts by weight of an organic or inorganic sequestrant, and optionally: 4) from 0 to 60 parts by weight of a solid lubricating compound.Type: GrantFiled: February 25, 2003Date of Patent: August 2, 2005Assignee: Solvay Solexis S.p.A.Inventors: Fabio Polastri, Tiziana Poggio
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Patent number: 6921787Abstract: Non-stick coatings for use on a flexible substrate include a fluoropolymer, an acrylic polymer, and a polyol and/or diol. The ratio of acrylic polymer to polyol and/or diol is between about 90:10 and about 10:90 by weight, preferably about 50:50. The ratio of acrylic polymer and polyol or diol to fluoropolymer is preferably about 100:60 by weight.Type: GrantFiled: December 3, 2003Date of Patent: July 26, 2005Assignee: Akzo Nobel Non-Stick CoatingsInventor: Thomas J. Bate
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Patent number: 6919130Abstract: The processes and apparatus of the present invention concerns melt spinning high viscosity fluoropolymers into single filaments or multi-filament yarns at high spinning speeds, the melt spinning being carried out at a temperature which is at least 90° C. greater than the melting point of the polymer or in the case of perfluoropolymer, at a temperature of at least 450° C., and the yarns produced by the process, wherein the filaments can exhibit an orientation at the surface of the filament no greater than at the core of the filament.Type: GrantFiled: May 26, 2004Date of Patent: July 19, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: Edward William Tokarsky, William Cheng Uy
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Patent number: 6916520Abstract: A set for forming a card such as an identity card with a protective film. The set has a carrier sheet, a print carrier layer and a protective film layer. The set further includes at least one print carrier element stamped out from the print carrier layer, and at least one protective film element stamped out from the protective film layer. The print carrier element and the protective film element are disposed in a mirror image relative to a fold axis formed in the carrier sheet. The protective film layer is formed by a hot-seal film layer, and the protective film element is disposed on the carrier sheet with a horizontal gap having a predetermined distance from the adjoining regions of the hot-seal film layer.Type: GrantFiled: March 11, 2003Date of Patent: July 12, 2005Assignee: PROMAXX Cards Vertriebs GmbHInventor: Paul Fernandez-Kirchberger