Halogen Is Fluorine Patents (Class 522/156)
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Patent number: 11692047Abstract: A method for producing low molecular weight polytetrafluoroethylene which includes: (1) feeding into an airtight container in the absence of oxygen: high molecular weight polytetrafluoroethylene: and a halogenated polymer having a halogen atom other than a fluorine atom; and (2) irradiating the high molecular weight polytetrafluoroethylene to provide low molecular weight polytetrafluoroethylene having a melt viscosity at 380° C. of 1.0×102 to 7.0×105 Pa·s.Type: GrantFiled: February 5, 2019Date of Patent: July 4, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Masayuki Tsuji, Yuuji Tanaka, Hirokazu Yukawa
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Patent number: 11542375Abstract: The disclosure provides a method for producing low molecular weight polytetrafluoroethylene containing less C6-C14 perfluorocarboxylic acids or salts thereof. The method for producing low molecular weight polytetrafluoroethylene includes: (1) irradiating high molecular weight polytetrafluoroethylene to provide low molecular weight polytetrafluoroethylene having a melt viscosity of 1.0×102 to 7.0×105 Pa·s at 380° C.; and (2) irradiating the low molecular weight polytetrafluoroethylene to a dose that does not decompose the low molecular weight polytetrafluoroethylene.Type: GrantFiled: February 5, 2019Date of Patent: January 3, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventor: Masayuki Tsuji
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Patent number: 11326034Abstract: A manufacturing method for a polytetrafluoroethylene formed product according to an aspect of the invention is a manufacturing method for a polytetrafluoroethylene formed product, the method including a step of irradiating a forming material containing a polytetrafluoroethylene as a principal component with ionizing radiation, wherein the polytetrafluoroethylene has a melt viscosity at 380° C. of not greater than 7×105 Pa·s.Type: GrantFiled: August 30, 2016Date of Patent: May 10, 2022Assignees: SUMITOMO ELECTRIC FINE POLYMER, DAIKIN INDUSTRIES, LTD.Inventors: Kazuaki Ikeda, Hong-Phuc Nguyen, Hirotoshi Yoshida, Taku Yamanaka
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Patent number: 10379464Abstract: Provided is an endless belt-shaped electrophotographic member having a superior durability. The member comprises an endless belt-shaped substrate and a surface layer, the surface layer comprising an ionizing radiation crosslinked product of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), the surface layer is formed by irradiation of electron beam to a resin layer, the resin layer comprising the PFA, the surface layer has a universal hardness HU at 200° C. of 18 N/mm2?HU?40 N/mm2, and when a degree of orientation of the PFA in the resin layer in a direction orthogonal to the circumferential direction of the substrate is defined as Ri, and a degree of orientation of the crosslinked PFA in the surface layer in the direction orthogonal to the circumferential direction of the substrate is defined as Rf, Ri and Rf satisfy a relationship represented by expression (1): Ri×0.8?Rf?Ri??(1).Type: GrantFiled: August 7, 2017Date of Patent: August 13, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Hiroki Muramatsu, Toshinori Nakayama, Kota Arimoto, Masayuki Tamaki, Yusuke Yamaguchi, Ryo Yashiro, Matsutaka Maeda, Yuji Kitano, Yoshihito Oshima
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Patent number: 9732175Abstract: Method for preparing a ceramic-polymer nanocomposite is provided. The method includes providing a polymer comprising radicals on a surface thereof; contacting the polymer with a functionalizing agent to form a functionalized polymer; and either (i) grafting a cross-linking agent onto the functionalized polymer to form a graft copolymer, and attaching ceramic nanostructures to the graft copolymer to form a ceramic-polymer nanocomposite, or (ii) grafting a cross-linking agent onto ceramic nanostructures to form modified ceramic nanostructures, and attaching the modified ceramic nanostructures to the functionalized polymer to form a ceramic-polymer nanocomposite. A ceramic-polymer nanocomposite and use of the ceramic-polymer nanocomposite are also provided.Type: GrantFiled: May 7, 2014Date of Patent: August 15, 2017Assignee: Nanyang Technological UniversityInventors: Meng-Fang Lin, Pooi See Lee
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Patent number: 9090723Abstract: The present invention provides a high exchange capacity perfluorinated resin comprising two kinds of sulfonyl fluoride-containing short pendant groups of different structures, which is prepared by copolymerizing tetrafluoroethylene, vinyl ether monomers comprising two kinds of sulfonyl fluoride-containing short pendant groups of different structures, and vinyl ether monomer comprising bromine-containing pendant group, wherein based on all monomer units in the copolymer, the mol % of tetrafluoroethylene monomer is 50-85%, the mol % of vinyl ether monomers comprising two kinds of sulfonyl fluoride-containing short pendant groups of different structures is 5-49% and the mol % of vinyl ether monomer comprising bromine-containing pendant group is 1-10%.Type: GrantFiled: December 15, 2009Date of Patent: July 28, 2015Assignee: Shandong Huaxia Shenzou New Material Co., Ltd.Inventors: Yongming Zhang, Heng Zhang, Sheng Qin, Zihong Gao, Li Wang, Yong Li, Xuezhang Song
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Patent number: 8980404Abstract: A composition for imprints comprising a polymerizable monomer, a photopolymerization initiator, and a polymer having a functional group with at least one of a fluorine atom or a silicon atom and having a polymerizable functional group, wherein the polymer has a weight-average molecular weight of at least 2000 and the amount of the polymer is from 0.01 to 20% by mass relative to the polymerizable monomer, is excellent in patternability and mold releasability, capable of forming good patterns and free from a problem of mold contamination.Type: GrantFiled: October 29, 2009Date of Patent: March 17, 2015Assignee: FUJIFILM CorporationInventor: Kunihiko Kodama
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Patent number: 8940809Abstract: The present invention provides a process for producing electret fine particles or coarse powder that can be uniformly electrified and exhibits excellent electrophoretic properties. Specifically, the present invention relates to the production processes (1) and (2) below: (1) A process for producing electret fine particles, comprising emulsifying a fluorine-containing material that contains a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer in a liquid that is incompatible with the fluorine-containing material to obtain emulsified particles; and subjecting the emulsified particles to electron ray irradiation, radial ray irradiation, or corona discharge treatment.Type: GrantFiled: November 30, 2011Date of Patent: January 27, 2015Assignee: Sakura Color Products CorporationInventors: Tomochika Yoshitsugi, Hiroshi Inoue
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Patent number: 8901197Abstract: A modified fluorocarbon resin composition and a modified molded product of fluorocarbon resin composition having an excellent abrasion resistivity and low friction property under high pressure, are provided. The modified fluorocarbon resin composition comprises a blend of fluorocarbon resin and aromatic engineering plastic, which is modified by irradiation of ionizing radiation.Type: GrantFiled: June 17, 2010Date of Patent: December 2, 2014Assignee: Hitachi Metals, Ltd.Inventors: Yasuaki Yamamoto, Etsuo Fukuchi, Hiroo Kusano
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Photocurable composition and process for producing molded product having fine pattern on its surface
Patent number: 8703837Abstract: To provide a photocurable composition whereby it is possible to obtain a cured product having both a release property and flexibility, and a process whereby it is possible to produce a flexible molded product having on its surface a fine pattern having a reverse pattern of a mold precisely transferred. A photocurable composition comprising a compound (A) having at least two urethane bonds and at least two (meth)acryloyloxy groups and having a mass average molecular weight of less than 2,000, a compound (B) having a fluorine atom and at least one carbon-carbon unsaturated double bond, a compound (C) having one (meth)acryloyloxy group, a photopolymerization initiator (D), and a fluorinated surfactant (E), wherein in the total (100 mass %) of (A) to (E), (A) is from 10 to 50 mass %, (B) is from 5 to 35 mass %, (C) is from 15 to 75 mass %, (D) is from 1 to 12 mass %, and (E) is from 0.1 to 5 mass %, is used.Type: GrantFiled: June 2, 2011Date of Patent: April 22, 2014Assignee: Asahi Glass Company, LimitedInventor: Yasuhide Kawaguchi -
Publication number: 20140107250Abstract: The present invention relates to a fixing member including a surface layer containing PFA, the fixing member being excellent in wear resistance and having high release properties to a toner. The fixing member includes a base member, an elastic layer provided on the surface of the base member, and a surface layer, wherein the surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer having a particular partial structure, and has a surface having a contact angle of 67 degrees or more as measured in a mixed liquid for a wetting tension test having a wetting tension of 31.0 mN/m.Type: ApplicationFiled: December 12, 2013Publication date: April 17, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Matsutaka Maeda, Katsuhisa Matsunaka
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Patent number: 8664282Abstract: Described herein is a process to prepare crosslinkable polymers based on trifluorostyrene, and their use as polymer electrolyte membranes.Type: GrantFiled: December 18, 2008Date of Patent: March 4, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Mark Gerrit Roelofs, Mark F. Teasley
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Patent number: 8653213Abstract: Hydrophobic coating compositions are provided as are processes to coat articles with the compositions. Extremely hydrophobic coatings are provided by the compositions. Compositions that include perfluorohexyl(meth)acrylate and a branched or high Tg monomer are provided as are articles coated with the polymerization product of the composition. Methods are also provided for forming hydrophobic coatings on articles.Type: GrantFiled: August 16, 2011Date of Patent: February 18, 2014Assignee: Cytonix, LLCInventor: James F Brown
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Patent number: 8648149Abstract: The invention relates to the field of chemistry and relates to radically coupled PTFE polymer compounds that can be used, for example, as tribo materials, and a method for the production thereof. The object of the invention is to disclose radically coupled PTFE polymer compounds which exhibit improved wear resistances with comparable gliding properties, and furthermore a simple and efficient method for the production of such compounds. The object is attained through radically coupled PTFE polymer compounds comprising radiation-chemically and/or plasma-chemically modified PTFE powders, on the particle surface of which olefinically unsaturated polymers are chemically radically coupled by a reactive conversion into a melt.Type: GrantFiled: June 7, 2010Date of Patent: February 11, 2014Assignee: Leibniz-Institut fuer Polymerforschung Dresden E.V.Inventors: Dieter Lehmann, Bernd Kluepfel
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Patent number: 8552083Abstract: The present invention relates to a radiation-curable composition having a refractive index less than 1.40 comprising (1) a curable perfluoropolyether oligomer having a structural formula selected from the group consisting of: and wherein R represents a hydrogen atom or a methyl group, wherein A represents a straight chained or branched alkylene group, wherein m represents an integer from 1 to 4, wherein the integers represented by m within individual —((CF2)m—O)n— repeat units can be the same or different, and wherein n represents an integer from 1 to 20; (2) a diluent; (3) a photo-initiator; and (4) an adhesion promoter; wherein the radiation-curable composition is free of compounds containing —CF3 groups.Type: GrantFiled: June 29, 2011Date of Patent: October 8, 2013Assignee: Ovation Polymer Technology and Engineered Materials, Inc.Inventors: Prasad Taranekar, Austin L. Schuman, Asis Banerjie
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Publication number: 20130245151Abstract: The present invention provides a process for producing electret fine particles or coarse powder that can be uniformly electrified and exhibits excellent electrophoretic properties. Specifically, the present invention relates to the production processes (1) and (2) below: (1) A process for producing electret fine particles, comprising emulsifying a fluorine-containing material that contains a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene terpolymer in a liquid that is incompatible with the fluorine-containing material to obtain emulsified particles; and subjecting the emulsified particles to electron ray irradiation, radial ray irradiation, or corona discharge treatment.Type: ApplicationFiled: November 30, 2011Publication date: September 19, 2013Applicant: SAKURA COLOR PRODUCTS CORPORATIONInventors: Tomochika Yoshitsugi, Hiroshi Inoue
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Patent number: 8524794Abstract: A method of coating a polymer comprising the step of treating the polymer with an activating agent to produce a reactive polymer, for example treating a polymer bearing at least one X (halogen) group and at least one H with base to eliminate HX. The reactive polymer is then reacted with a reactive coating, for example PVP, preferably in the presence of an initiator like persulfate anions, to produce a coated polymer, which may be hydrophilic in nature.Type: GrantFiled: July 4, 2005Date of Patent: September 3, 2013Assignee: Siemens Industry, Inc.Inventors: Heinz-Joachim Muller, Daniel Mullette
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Patent number: 8524800Abstract: The present invention provides inks and methods for making colored silicone hydrogel contact lenses. The ink of the invention comprises an actinically-curable binder copolymer comprising fluorine-containing segments and is characterized by having capability to be cured actinically or thermally to form a colored film on a molding surface of a mold or a silicone hydrogel contact lens and by having an increased durability in a solvated state in a silicone-hydrogel lens formulation in relation to a control colored film obtained from a control ink including an actinically-curable fluorine-free binder copolymer. The invention also provides methods for making colored silicone hydrogel contact lenses based on print-on-mold processes for producing colored contact lenses.Type: GrantFiled: December 12, 2007Date of Patent: September 3, 2013Assignee: Novartis AGInventor: John Christopher Phelan
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Patent number: 8481607Abstract: A surface treatment method for a fluororesin molded body, which is a method for treating a surface of an ETFE molded body by using a glow discharge generated by a pulsed electric field having a voltage-rising time of at most 10 ?sec in a nitrogen atmosphere under a pressure in the vicinity of atmospheric pressure; which comprises carrying out a plurality of glow discharge treatments at intervals of at least 0.01 sec so that the discharge density of each of the glow discharges is from 40 to 200 W·min/m2, and that the total discharge density of the glow discharges is from 220 to 800 W·min/m2. Further, an ETFE molded body subjected to a surface treatment by the surface treatment method.Type: GrantFiled: July 26, 2012Date of Patent: July 9, 2013Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Aruga, Koichi Oda
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Publication number: 20130170015Abstract: The subject invention provides electret coarse powder useful as electrophoretic particles for a large-screen display. The electret coarse powder is obtained by irradiating a fluorine-containing resin sheet with an electron beam or a radial ray to convert the fluorine-containing resin sheet into an electret sheet, and pulverizing the electret sheet.Type: ApplicationFiled: February 26, 2013Publication date: July 4, 2013Applicant: SAKURA COLOR PRODUCTS CORPORATIONInventor: Sakura Color Products Corporation
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Patent number: 8461225Abstract: The present invention relates to methods for making oxidation resistant homogenized polymeric materials and medical implants that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and annealing the antioxidant doped UHMWPE in a super critical fluid, and materials used therein.Type: GrantFiled: August 18, 2006Date of Patent: June 11, 2013Assignee: The General Hospital CorporationInventors: Orhun K. Muratoglu, Ebru Oral
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Patent number: 8415014Abstract: Presently is described a free-radically polymerizable composition comprising a mixture of reaction products of i) at least one polyisocyanate; ii) at least one isocyanate reactive perfluoropolyether compound; iii) at least one isocyanate reactive compound comprising greater than 6 repeat units of ethylene oxide; and iv) at least one isocyanate reactive non-fluorinated crosslinker comprising at least two free-radically polymerizable groups.Type: GrantFiled: September 14, 2012Date of Patent: April 9, 2013Assignee: 3M Innovative Properties CompanyInventors: Thomas P. Klun, Richard J. Pokorny, Joan M. Noyola
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Patent number: 8394870Abstract: Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH2?CR?COO—(CH2)n—R—(CH2)n—OOCR??CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R? is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons. The source of the free radicals may be a photoinitiator or an organic peroxide.Type: GrantFiled: July 16, 2009Date of Patent: March 12, 2013Assignees: E.I. du Pont de Nemours and Company, Le Centre National de la Recherche ScienceInventors: Ming-Hong Hung, Bruno Ameduri, Georgi Kostov
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Patent number: 8383694Abstract: Presently is described a free-radically polymerizable composition comprising a mixture of reaction products of i) at least one polyisocyanate; ii) at least one isocyanate reactive perfluoropolyether compound; iii) at least one isocyanate reactive compound comprising greater than 6 repeat units of ethylene oxide; and iv) at least one isocyanate reactive non-fluorinated crosslinker comprising at least two free-radically polymerizable groups.Type: GrantFiled: February 14, 2012Date of Patent: February 26, 2013Assignee: 3M Innovative Properties CompanyInventors: Thomas P. Klun, Richard J. Pokorny, Joan M. Noyola
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Patent number: 8372894Abstract: A method for producing a graft polymer comprises the steps of: a) irradiating a base polymer with an electron beam or a source of ?-radiation, b) contacting a grafting solution with the base polymer, wherein the grafting solution contains at least one oxygen scavenger and at least one graft monomer selected from the group consisting of styrene and styrene derivatives, and c) graft polymerizing the mixture of the base polymer and the grafting solution obtained in step b).Type: GrantFiled: February 23, 2009Date of Patent: February 12, 2013Assignee: Belenos Clean Power Holding AGInventor: Dirk Henkensmeier
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Patent number: 8362151Abstract: The present invention provides novel hybrid polymer useful for alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from a) at least one component selected from the group consisting of oligomer(s) and polymer(s) within the class of polyimides, poly(amic acids) and esters thereof wherein the at least one component comprises at least one initiator generating moiety, and b) at least one component selected from the group consisting of addition monomer(s) and addition polymer(s), wherein the two components are covalently bonded to form a copolymer. The invention further describes liquid crystal elements such as all liquid crystal display products or modes, liquid crystal devices and liquid crystal optical films comprising the novel hybrid polymer alignment layers.Type: GrantFiled: December 15, 2009Date of Patent: January 29, 2013Assignee: Elsicon, Inc.Inventors: Chunhong Li, Wayne Gibbons
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Patent number: 8354459Abstract: An object of the present invention is to provide a method for producing a block copolymer solid in which microphase-separated structures are formed with good productivity. The present invention provides a method for producing a block copolymer solid in which a microphase-separated structure is formed, or an alloy, blend or composite solid containing a block copolymer in which a microphase-separated structure is formed, which comprises the following steps (1) to (3): (1) immersing a block copolymer solid or an alloy, blend or composite solid containing a block copolymer in a solvent in which each component is insoluble; (2) putting the solid obtained in (1) above in a pressure-resistant container; and (3) irradiating the solid or the solvent in (2) above with microwave.Type: GrantFiled: August 17, 2010Date of Patent: January 15, 2013Assignee: Japan Science and Technology AgencyInventors: Hiroshi Yabu, Takeshi Higuchi
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Publication number: 20120295117Abstract: A coating material including a perfluorocarbon sulfonic acid resin which is a copolymer including a polymerization unit represented by —(CF2—CFZ)—, in the formula, Z being H, Cl, F, or a C1-C3 perfluoroalkyl group, and a polymerization unit represented by —(CF2—CF(—O—(CF2)m—SO3H))—, in the formula, m being an integer of 1 to 12, and the perfluorocarbon sulfonic acid resin has an equivalent weight EW of 200 to 1000. Also disclosed is a laminate including a base material and a hydrophilic layer formed from the coating material.Type: ApplicationFiled: January 31, 2011Publication date: November 22, 2012Applicants: DAIKIN INDUSTRIES, LTD., ASAHI KASEI E-MATERIALS CORPORATIONInventors: Yuko Iizuka, Naoto Miyake, Tadashi Ino, Masahiro Kondo, Katsuhiko Imoto
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Publication number: 20120296002Abstract: A surface treatment method for a fluororesin molded body, which is a method for treating a surface of an ETFE molded body by using a glow discharge generated by a pulsed electric field having a voltage-rising time of at most 10 ?sec in a nitrogen atmosphere under a pressure in the vicinity of atmospheric pressure; which comprises carrying out a plurality of glow discharge treatments at intervals of at least 0.01 sec so that the discharge density of each of the glow discharges is from 40 to 200 W·min/m2, and that the total discharge density of the glow discharges is from 220 to 800 W·min/m2. Further, an ETFE molded body subjected to a surface treatment by the surface treatment method.Type: ApplicationFiled: July 26, 2012Publication date: November 22, 2012Applicant: Asahi Glass Company, LimitedInventors: Hiroshi Aruga, Koichi Oda
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Photocurable composition and process for producing molded product having fine pattern on its surface
Patent number: 8258201Abstract: To provide a photocurable composition whereby it is possible to obtain a cured product provided with both release property and high refractive index, and a process whereby it is possible to produce a molded product having a high refractive index and having on its surface a fine pattern having a reverse pattern of a mold precisely transferred. The photocurable composition comprising from 61 to 90 mass % of a compound (A) having a refractive index of at least 1.55 at a wavelength of 589 nm before curing and having at least two (meth)acryloyloxy groups, from 2 to 15 mass % of a compound (B) having fluorine atoms and at least one carbon-carbon unsaturated double bond (provided that compound (A) is excluded), from 5 to 35 mass % of a compound (C) having one (meth)acryloyloxy group (provided that compound (B) is excluded), and from 1 to 12 mass % of a photopolymerization initiator (D) (provided (A)+(B)+(C)+(D)=100 mass %).Type: GrantFiled: September 23, 2010Date of Patent: September 4, 2012Assignee: Asahi Glass Company, LimitedInventor: Yasuhide Kawaguchi -
Publication number: 20120149798Abstract: To provide a photocurable fluorinated polymer composition which has a high curing rate, shows little shrinkage before and after photocuring and requires no post treatment such as heat treatment after photocuring and whereby it is possible to obtain a cured resin excellent in heat resistance and weather resistance. According to the photocurable fluorinated polymer composition comprising a fluorinated polymer (A) containing polymerized units derived from a fluoroolefin and polymerized units derived from an unsaturated monomer having an oxetanyl group or a substituted oxetanyl group, and a photoreaction initiator (B), of the present invention, it is possible to provide a photocurable fluorinated polymer composition which has a high curing rate, shows little shrinkage before and after photocuring and requires no post treatment such as heat treatment after photocuring and whereby it is possible to obtain a cured resin excellent in heat resistance and weather resistance.Type: ApplicationFiled: February 17, 2012Publication date: June 14, 2012Applicant: Asahi Glass Company, LimitedInventors: Shun SAITO, Hiroshi Nishio, Sho Masuda
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Patent number: 8193259Abstract: A photocurable pressure-sensitive adhesive (PSA) composition includes an acrylic PSA binder, the acrylic PSA binder including at least one fluoro group in an amount of about 6 mol % to about 30 mol % based on a total amount of the acrylic PSA binder, a thermal curing agent, and a photoinitiator.Type: GrantFiled: October 2, 2008Date of Patent: June 5, 2012Assignee: Cheil Industries, Inc.Inventors: Seung Jib Choi, Kyoung Jin Ha, Jun Suk Kim, Kyung Ju Lee, Chang Beom Chung
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Patent number: 8163813Abstract: To provide a photocurable composition from which a cured product excellent in mold release characteristics and mechanical strength can be obtained, and a method for producing a molded product excellent in durability, with a fine pattern having a reverse pattern of a mold precisely transferred on its surface. A photocurable composition 20 comprising from 15 to 60 mass % of a compound (A) which is an aromatic compound having at least two rings or an alicyclic compound having at least two rings and which has two (meth)acryloyloxy groups, from 5 to 40 mass % of a compound (B) having a fluorine atom and having at least one carbon-carbon unsaturated double bond (excluding the compound (A)), from 10 to 55 mass % of a compound (C) having one (meth)acryloyloxy group (excluding the compound (B)) and from 1 to 12 mass % of a photopolymerization initiator (D) (provided that (A)+(B)+(C)+(D)=100 mass %) is used.Type: GrantFiled: August 17, 2009Date of Patent: April 24, 2012Assignee: Asahi Glass Company, LimitedInventors: Yasuhide Kawaguchi, Kentaro Tsunozaki
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Patent number: 8153702Abstract: The present invention relates to a method of producing an electret material, to a new class of electret materials and to a device comprising such electret materials.Type: GrantFiled: September 14, 2009Date of Patent: April 10, 2012Assignee: Sony CorporationInventors: Nikolaus Knorr, Silvia Rosselli, Tzenka Miteva, Gabriele Nelles
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Patent number: 8097661Abstract: A radiation-curable gel ink with reduced syneresis. The inks include a curable monomer, an organic gellant, a gel-forming wax, an optional photoinitiator, and an optional colorant. Also disclosed are methods of making such inks, and methods of forming images with such inks.Type: GrantFiled: April 22, 2010Date of Patent: January 17, 2012Assignee: Xerox CorporationInventors: Naveen Chopra, Stephan V. Drappel, Michelle N. Chretien, Barkev Keoshkerian, Peter G. Odell
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Patent number: 8030367Abstract: The invention relates to the field of chemistry and relates to radically coupled PTFE polymer powders that can be used, for example, as tribomaterials, and a method for the production thereof. There is disclosed radically coupled PTFE polymer powders which, when incorporated into a matrix as PTFE polymer compound, exhibit improved wear resistance, and furthermore a simple and efficient method for the production thereof. There is provided radically coupled PTFE polymer powders comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers or terpolymers are radically coupled via a reaction in dispersion or in solid.Type: GrantFiled: July 30, 2010Date of Patent: October 4, 2011Assignee: Leibniz-Institut Fuer Polymerforschung Dresden E.V.Inventors: Dieter Lehmann, Bernd Kluepfel
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PHOTOCURABLE COMPOSITION AND PROCESS FOR PRODUCING MOLDED PRODUCT HAVING FINE PATTERN ON ITS SURFACE
Publication number: 20110227257Abstract: To provide a photocurable composition whereby it is possible to obtain a cured product having both a release property and flexibility, and a process whereby it is possible to produce a flexible molded product having on its surface a fine pattern having a reverse pattern of a mold precisely transferred. A photocurable composition 20 comprising a compound (A) having at least two urethane bonds and at least two (meth)acryloyloxy groups and having a mass average molecular weight of less than 2,000, a compound (B) having a fluorine atom and at least one carbon-carbon unsaturated double bond, a compound (C) having one (meth)acryloyloxy group, a photopolymerization initiator (D), and a fluorinated surfactant (E), wherein in the total (100 mass %) of (A) to (E), (A) is from 10 to 50 mass %, (B) is from 5 to 35 mass %, (C) is from 15 to 75 mass %, (D) is from 1 to 12 mass %, and (E) is from 0.1 to 5 mass %, is used.Type: ApplicationFiled: June 2, 2011Publication date: September 22, 2011Applicant: ASAHI GLASS COMPANY, LIMITEDInventor: Yasuhide KAWAGUCHI -
Patent number: 8017303Abstract: Polymers comprising a first methacrylate monomer having a pendent spacer between the polymer backbone and an acid-liable acetal group, a second methacrylate monomer having a pendent group including a fluorinated alkyl group and a third methacrylate monomer having a pendent hydrocarbon group. Photoresist formulations include the polymers, a photoacid generator and a casting solvent. Methods of patterning photoresist films formed from the photoresist formulations are characterized by post-exposure bakes at temperatures of about 60° C. or less.Type: GrantFiled: February 23, 2009Date of Patent: September 13, 2011Assignee: International Business Machines CorporationInventors: Dario Leonardo Goldfarb, Mahmoud Khojasteh, Pushkara R. Varanasi
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Publication number: 20110171403Abstract: A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.Type: ApplicationFiled: September 30, 2009Publication date: July 14, 2011Inventors: Yoneho Tabata, Hideto Suzuki, Shigetoshi Ikeda, Minoru Iida, Minoru Kawai, Gen Kojima, Yasuhiko Sawada
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Patent number: 7939605Abstract: The invention relates to the field of chemistry and relates to long-term stable oil PTFE dispersions, such as can be used, for example, in transmissions or bearings, and a method for the production thereof. The object of the present invention is therefore to disclose a long-term stable oil PTFE dispersion as well as a simple and cost-effective method for the production thereof. The object is attained with an oil PTFE dispersion comprising PTFE particles and a monoolefinically or polyolefinically unsaturated oil, wherein molecules of the olefinically unsaturated oil are covalently/chemically coupled to PTFE (primary) particle surfaces via radical reactions, and wherein a permanent charge separation between the PTFE particle surfaces and the coupled oil molecules is present and a fine dispersion of the PTFE particles in the oil or oil mixture is present.Type: GrantFiled: December 9, 2008Date of Patent: May 10, 2011Assignee: Leibniz—Institut Fuer Polymerforschung Dresden E.V.Inventor: Dieter Lehmann
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Publication number: 20100311857Abstract: The present invention relates to a process for chemically modifying, within its thickness, a polymer matrix chosen from matrices made of fluoropolymers and matrices made of aliphatic polymers, said process comprising at least one step consisting in irradiating said matrix with UV light having a wavelength of less than 300 nm in order to generate, within the thickness of said matrix, zones that have short polymer chains, formed by scission of the existing chains during the passage of the UV radiation and that have free radicals denoted hereinbelow as “activated zones”. The present invention also relates to the polymer matrix capable of being chemically modified by such a process.Type: ApplicationFiled: April 30, 2010Publication date: December 9, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Thomas Berthelot, Cécile Baudin
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Publication number: 20100240791Abstract: It is an object to provide a curable composition which has a high curing rate and is excellent in productivity, and from which a fluorinated cured product having excellent dimensional stability can be obtained by suppressing volume shrinkage by bubbling during the curing reaction, and a process for producing such a curable composition. A curable composition comprising a polymerizable compound having a polymerizable double bond, wherein the mass ratio of a polymerizable compound (P) having a molecular weight of at least 1,000 is at least 90 mass % to all polymerizable compounds in the curable composition, and the polymerizable compound (P) contains a fluoropolymer (X) having a molecular weight of at least 1,000 having specific repeating units.Type: ApplicationFiled: June 3, 2010Publication date: September 23, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Norihide SUGIYAMA, Masahiro Ohkura, Yoshitomi Morizawa
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Patent number: 7790780Abstract: Radically coupled PTFE polymer powders useful, for example, as tribomaterials, and a method for production thereof. Radically coupled PTFE polymer powders are provided which, when incorporated into a matrix as PTFE polymer compound, exhibit improved wear resistances, and furthermore there is provided a simple and efficient method for the production thereof. Radically coupled PTFE polymer powders are provided comprising radiation-chemically and/or plasma-chemically modified PTFE powders, onto the particle surface of which homopolymers, copolymers or terpolymers are radically coupled via a reaction in dispersion or in substance. A method is provided in which PTFE powders with reactive perfluoroalkyl-(peroxy) radical centers after a radiation-chemical and/or plasma-chemical modification are reacted in dispersion or in substance with the addition of polymerizable, olefinically unsaturated monomers, whereby during the reaction a polymer-forming reaction is obtained.Type: GrantFiled: October 22, 2004Date of Patent: September 7, 2010Assignee: Leibniz-Institut fuer Polymerforschung Dresden E.V.Inventors: Dieter Lehmann, Bernd Kluepfel
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Publication number: 20100144916Abstract: Disclosed herein is a composition comprising a crosslinked organic polymer; wherein the composition has a coefficient of friction that is in a range of ±30% of a coefficient of friction for a composition comprising the same organic polymer that is not crosslinked; and wherein the composition has a lower K factor than a K factor of the composition comprising the same organic polymer that is not crosslinked; the coefficient of friction and the K factor being measured in a thrust washer apparatus as per ASTM D-3702, where the counter stationary surface in the thrust washer apparatus comprises carbon steel having a Rockwell C hardness of 18 to 22 and a 12 to 16 micro-inch surface finish.Type: ApplicationFiled: December 8, 2008Publication date: June 10, 2010Applicant: SABIC INNOVATIVE PLASTICSInventors: Domenico La Camera, Alexis Chopin, Andre Kijkuit
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Patent number: 7632875Abstract: The present invention provides novel hybrid polymer useful for alignment layers for inducing alignment of a liquid crystal medium. Hybrid polymers of this invention are prepared from at least one component selected from the group consisting of monomer, oligomer and polymer within the class of polyimides, poly(amic acids) and esters thereof and at least one component selected from the group consisting of addition monomer and functionalized addition polymer wherein the two components are covalently bonded to form a copolymer. The invention further describes liquid crystal optical elements such as all liquid crystal display products or modes, liquid crystal devices and liquid crystal optical films comprising the novel hybrid polymer alignment layers.Type: GrantFiled: July 18, 2005Date of Patent: December 15, 2009Assignee: Elsicon, Inc.Inventors: Wayne M. Gibbons, Michael G. P. Reppy, Patricia A. Rose, Hanxing Zheng
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Patent number: 7629051Abstract: An optical film comprising a support and a layer containing a cured product of a composition which contains a fluorinated photopolymerization initiator and an ionizing radiation-curing compound.Type: GrantFiled: June 1, 2006Date of Patent: December 8, 2009Assignee: Fujifilm CorporationInventors: Yuuichi Fukushige, Hiroyuki Yoneyama
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Patent number: 7595353Abstract: The invention provides a photocurable polymer composition having a fluorine-containing polymer and a fluorine-free polymer, and preferably further having a polymerizable double bond-containing compound and a photopolymerization initiator. The fluorine-containing polymer preferably includes a fluorosilsesquioxane skeleton.Type: GrantFiled: September 28, 2006Date of Patent: September 29, 2009Assignee: Chisso CorporationInventors: Hisanobu Minamisawa, Mikio Yamahiro, Akira Meguro
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Patent number: 7592392Abstract: The present invention relates to a novel process for the preparation of solid-supported scavenging reagents and solid-supported functional polymers. The invention further relates to novel solid-supported functional polymers and to their use in organic synthesis and combinatorial chemistry.Type: GrantFiled: March 31, 2004Date of Patent: September 22, 2009Assignee: Merck & Co. Inc.Inventors: Craig W. Lindsley, David D. Wisnoski
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Patent number: 7572839Abstract: A seal ring (10) of the present invention seals operating oil hermetically and is attached to an annular seal ring groove (16) provided on an outer circumference of a shaft member (12). The seal ring (10) includes fluororesin, modified fluororesin formed by being irradiated with an ionizing radiation in a range from 1 kGy to 10 MGy inclusive in a state of being heated up to a melting point thereof or higher under an inert gas atmosphere with an oxygen partial pressure of 1.33 kPa or less, and synthetic resin having a surface energy ranging from +0 N/cm to 20˜10?5 N/cm inclusive of that of the operating oil.Type: GrantFiled: September 29, 2004Date of Patent: August 11, 2009Assignees: Nissan Motor Co., Ltd., Hitachi Cable, Ltd.Inventors: Tomohito Ota, Tomihito Hashimoto, Yasuaki Yamamoto, Hiroo Kusano
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Patent number: 7521486Abstract: 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: May 14, 2007Date of Patent: April 21, 2009Assignee: Freudenberg-NOK General PartnershipInventor: Edward Hosung Park