Fluorine-containing Monomer Contains F And C Only Or Only F, C, And H Patents (Class 524/545)
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Patent number: 6825265Abstract: Pigments and compositions for use in laser marking. A colorless UV-absorbing pigment at least partially coated with a synergist has the formula [Rm(SiOn)]pR′q, wherein (a) m is 1 to 3, n is 1 to 3, p is at least 1, and q is 0 to 3, and (b) at least one R or R′ is a substituent that upon pyrolysis generates a black material suitable for providing a mark. Such pigments are useful in fluoropolymers used for wire and cable insulation.Type: GrantFiled: November 21, 2001Date of Patent: November 30, 2004Assignee: Tyco Electronics CorporationInventors: Vijay Daga, Klaus J. Dahl
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Patent number: 6811854Abstract: A surface treatment agent containing; (A) a metal alkoxide, and (B) a polymer comprising (B-i) a monomer having a carbon-carbon double bond and a metal alkoxide group, (B-ii) a fluorine-free (meth)acrylic acid derivative monomer, and (B-iii) a fluorine-containing compound having a functional group reactive with the metal alkoxide, or (B-iv) a fluorine-containing monomer having a carbon-carbon double bond, can impart durability maintaining sufficient water- and oil-repellency and soil releasability before and after cleaning.Type: GrantFiled: March 15, 2002Date of Patent: November 2, 2004Assignee: Daikin Industries, Ltd.Inventors: Kazuyuki Sato, Masamichi Morita, Fumihiko Yamaguchi, Yasushi Nakamae, Hiroko Yano
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Patent number: 6806306Abstract: A fluorine containing thermoplastic vulcanizate composition includes a continuous phase of at least one melt formable thermoplastic resin and a discrete phase of a vulcanized perfluoroether elastomer. The perfluoroether elastomer comprises between 10 and 80 weight percent based on the total amount of the continuous phase and the disperse phase combined.Type: GrantFiled: May 22, 2002Date of Patent: October 19, 2004Assignee: Freduenberg-NOK General PartnershipInventors: Craig A. Chmielewski, Paul J. Hochgesang
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Publication number: 20040204536Abstract: It is an object of the present invention to provide a powder coating which is excellent in processibility to attain the desired coat surface smoothness and can give coats excellent in chemical resistance and free from cracking due to chemicals or temperature shocks.Type: ApplicationFiled: December 12, 2003Publication date: October 14, 2004Inventors: Toshio Miyatani, Nobuyuki Tomihashi, Hiroshi Torii, Koichiro Ogita
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Patent number: 6803437Abstract: A process for producing a tetrafluoroethylene polymer, which comprises polymerizing tetrafluoroethylene in an aqueous medium in the presence of a water-soluble initiator, wherein the water used for the polymerization is regulated to have a TOC of 100 ppb or lower and/or an electrical conductivity of 1.0 &mgr;S/cm or lower. When this process for producing a tetrafluoroethylene polymer is employed, a decrease or fluctuation in the polymerization rate during the polymerization of tetrafluoroethylene will be minimal, and a deterioration in the physical properties of the obtained tetrafluoroethylene polymer will be minimal.Type: GrantFiled: December 10, 2002Date of Patent: October 12, 2004Assignee: Asahi Glass Company, LimitedInventors: Shigeki Kobayashi, Jun Hoshikawa, Kazuo Kato, Hiroki Kamiya, Hiroyuki Hirai
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Patent number: 6794550Abstract: The invention provides a process for removing steam-volatile fluorinated emulsifiers in their free acid form, from aqueous fluoropolymer dispersions. The process comprises adding a nonionic emulsifier, to the aqueous fluoropolymer dispersion and, at a pH-value of the aqueous fluoropolymer dispersion below 5, removing steam-volatile fluorinated emulsifier by distillation until the concentration of steam-volatile fluorinated emulsifier in the dispersion reaches the desired value.Type: GrantFiled: August 28, 2001Date of Patent: September 21, 2004Assignee: 3M Innovative Properties CompanyInventors: Klaus Hintzer, Gernot Löhr, Albert Killich, Werner Schwertfeger
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Patent number: 6790898Abstract: The present invention relates to preparation of fluorinated core-shell particles with water and oil repellency, and more particularly, to preparation of emulsion-type coating material with good water and oil repellency using only small amount of expensive fluorinated monomers, which comprise a shell wherein a large amount of hydrophobic fluorinated monomers are included and a core wherein no fluorinated monomers are included.Type: GrantFiled: December 2, 2002Date of Patent: September 14, 2004Assignee: Korea Research Institute of Chemical TechnologyInventors: Soo-Bok Lee, In Jun Park, Dong-Kwon Kim, Jeong-Hoon Kim, Kwang Won Lee, Jong-Wook Ha
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Patent number: 6790932Abstract: A process for obtaining non thermoprocessable fine powders of homopolymer or modified PTFE, comprising the following steps: A) obtaining of the polymer latex under the gel form; B) washing of the polymer gel with acid aqueous solutions or neutral aqueous solutions; C) granulation of the gel washed by mechanical stirring, at a specific power in the range 1.5-10 kW/m3, until flotation of the PTFE fine powder, and separation of the floated fine powder; D) drying in an aerated oven of the floated fine powder at a drying temperature in the range 90° C.-160° C.Type: GrantFiled: July 26, 2002Date of Patent: September 14, 2004Assignee: Ausimont S.p.A.Inventors: Valery Kapeliouchko, Hua Wu, Giovanna Palamone
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Conductive polymeric composite material with a resistance which is self-regulated by the temperature
Patent number: 6790530Abstract: The present invention relates to a composite material comprising, by weight, the total being 100% : A) 40 to 90% of PVDF homopolymer or copolymer crystallized essentially in the &bgr; form, B) 10 to 60% of a conductive filler, C) 0 to 40% of a crystalline or semi-crystalline polymer, D) 0 to 40% of a filler other than C, such that the crystals in the &bgr; form are nucleated on the surface of the particles of the conductive filler. This material is conductive with a resistance which is self-regulated by the temperature. It shows an increase in the resistance as a function of the temperature (PTC or “Positive Temperature Coefficient” effect), so that the intensity stabilizes at an equilibrium temperature.Type: GrantFiled: June 30, 2003Date of Patent: September 14, 2004Assignee: ATOFINAInventors: Alexander Korzhenko, Emmanuel Rastelletti, R. G. Sharpe-Hill -
Patent number: 6784239Abstract: A durable water repellent agent comprising a repellent and a fluorine-containing resin, wherein the repellent comprises at least one member selected from the group consisting of a perfluoroalkyl group-containing substance (I), a fluorine-containing surfactant (II), a fluorine-containing oil (III), a fluorosilicone oil (IV) and a silicone oil (V), the solid content weight ratio between said repellent and said fluorine-containing resin being (repellent):(fluorine-containing resin)=50:50 to 99:1.Type: GrantFiled: March 15, 2002Date of Patent: August 31, 2004Assignee: Daikin Industries, Ltd.Inventors: Susumu Wada, Kayoko Honda, Keiko Kunimasa, Katsuhiko Imoto
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Patent number: 6780966Abstract: A continuous coagulation process of PTFE or modified PTFE fine powders, comprising: a1) dilution in a lift of a PTFE latex up to a concentration from 5 to 25% w/w of PTFE, and optional filtration of the obtained diluted latex, b1) latex pressurization in the lift by an inert gas, preferably air, until a relative pressure, related to the atmospheric pressure, in the range 3-40 kg/cm2 (0.3-4 MPa), c1) addition of an acid electrolyte solution, d1) latex flowing from the mixer through a capillary tube under turbulent flow conditions, e1) granulation (coagulation) of the gel obtained in step d1) by mechanical stirring with a specific power from 1.5 to 10 kW/m3, maintaining the stirring until fine powder flotation, f1) separation of the underlying water from the fine powder.Type: GrantFiled: July 26, 2002Date of Patent: August 24, 2004Assignee: Ausimont S.p.A.Inventors: Hua Wu, Stefano Ferrero
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Patent number: 6774164Abstract: A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a partially fluorinated anionic surfactant of the formula F—(CF2CF2)n—CH2CH2SO3M, where n is an integer from 2 to 9, or mixtures thereof, and M is a cation having a valence of 1, is used as the dispersing agent.Type: GrantFiled: August 24, 2001Date of Patent: August 10, 2004Assignee: DuPont Dow Elastomers L.L.C.Inventors: Donald Frederick Lyons, Albert Lloyd Moore, Phan Linh Tang
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Patent number: 6774176Abstract: The invention discloses a process for the preparation of fluorinated polymers by miniemulsion polymerization of a mixture of fluorinated and nonfluorinated monomers in the absence of organic solvent. This polymerization process makes it possible to obtain an aqueous emulsion of fluorinated polymers devoid of coagulum.Type: GrantFiled: August 14, 2001Date of Patent: August 10, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Dennis Tembou Nzudie, Didier Juhue, Jean-Marc Corpart
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Publication number: 20040147666Abstract: The first and second aspects of the present invention have their object to provide a coating composition with which a layer mainly comprising a fluororesin and having a thickness comparable to that attainable by the two-coat technique can be formed by one-coat technique, desirably with the fluororesin disposed mainly on the substrate side and the binder resin disposed mainly on the coating film surface side remote from the substrate, and the surface layer thus can be formed in an arbitrary manner and which can be used in a wide range of fields.Type: ApplicationFiled: November 6, 2003Publication date: July 29, 2004Inventors: Nobuyuki Tomihashi, Koichiro Ogita, Toshio Miyatani, Yasukazu Nakatani, Hiroshi Torii
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Patent number: 6759476Abstract: A flexible thermal control composite comprising a natural or synthetic polymer and an endotherm dispersed, distributed and suspended within said natural or synthetic polymer i.e. “P”olymer “C”ontaining an “E”ndothermic “A”gent (PCEA). The PCEA can be formed into thin and thick films. It can be drawn, molded, extruded and spun into fibers or all dimensions. It can be formed and chopped into PCEA mulch. Irrespective its final form, the PCEA can be used in insulating, thermoprotecting, heat absorbing applications on the one hand, and heat maintenance applications of all types on the other.Type: GrantFiled: July 13, 2000Date of Patent: July 6, 2004Inventor: Claude Q. C. Hayes
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Patent number: 6753371Abstract: A fluorine rubber composition used for the surface layer material of a fixing member to fix a toner transferred onto a recording material comprises fluorine rubber having a polymerization degree based on vinylidene fluoride. The fixing member includes a base material, and a surface layer material disposed on the surface of the base material, and the surface layer material contains fluorine rubber having a polymerization degree base on vinylidene fluoride. Preferably, the fluorine rubber composition contains a reinforcing agent, antacid, vulcanizing agent, vulcanization accelerator, spherical filler, and solvent. Preferably, the fixing member has numerous fine convex portions on its surface. Accordingly, the amount of the toner adhering to the surface of the fixing member is reduced. Thus, generation of offset trouble can be reliably prevented for a long period of time. As a result, the durability of the fixing member will be improved.Type: GrantFiled: May 24, 2001Date of Patent: June 22, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshihiro Kiyomura, Hirofumi Kama, Hiroyuki Noda
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Patent number: 6743842Abstract: To provide a powder coating composition which comprises 100 parts by weight of fluorine-containing resin and 1 to 40 parts by weight of tetrafunctional or trifunctional silicate compound or a condensation product thereof, has a function of removing electrostatic charge and gives a coating film having a high hardness and stain-proof property.Type: GrantFiled: June 14, 2001Date of Patent: June 1, 2004Assignee: Daikin Industries, Ltd.Inventors: Ryoichi Fukagawa, Nobuhiko Tsuda, Masaru Nagato, Go Nagai, Ryuji Iwakiri
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Publication number: 20040075074Abstract: Excellent water- and oil-repellency performances resulting from low temperature curing are achieved by an aqueous dispersion type fluorine-containing water- and oil-repellent composition containing a polymer of a perfluoroalkyl group-containing ethylenically unsaturated monomer dispersed in an aqueous medium, wherein the composition contains a nonionic surfactant having an HLB value of at most 11 and a cationic surfactant, and a homopolymer of at lest one monomer constituting the polymer has Tg of at most 50° C.Type: ApplicationFiled: July 29, 2003Publication date: April 22, 2004Inventors: Kouji Kubota, Takuya Yoshioka, Masato Kashiwagi
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Publication number: 20040072935Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP.Type: ApplicationFiled: October 7, 2003Publication date: April 15, 2004Applicant: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Patent number: 6720381Abstract: In an aqueous curing composition of a fluoroelastomer comprising a fluoroelastomer, a curing agent and a surfactant, a surfactant with which an amount of decomposition residues is 0.3% by weight or less after being baked at 300° C. for 30 minutes, for example, a polyoxyethylene alkyl ether or a polyoxyethylenepolyoxypropylene block polymer, is used as a surfactant. Such a composition can make use of the inherent characteristics of the fluoroelastomer.Type: GrantFiled: April 5, 2002Date of Patent: April 13, 2004Assignee: Daikin Industries, Ltd.Inventors: Nobuyuki Tomihashi, Koichiro Ogita, Kiyotaro Terasaka, Yasukazu Nakatani
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Patent number: 6693144Abstract: A solvent-based water- and oil-repellent agent composition, which contains a graft copolymer having a repeating unit derived from a vinyl monomer having a perfluoroalkyl group and a repeating unit derived from a polymerizable cyclic acid anhydride and an organic solvent, has high product stalibity and high dilution stability and can give high water- and oil-repellency.Type: GrantFiled: May 30, 2002Date of Patent: February 17, 2004Assignee: Daikin Industries, Ltd.Inventors: Fumihiko Yamaguchi, Makoto Hanazawa, Kazunori Hayashi
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Patent number: 6683127Abstract: A carbon black filler for crosslinkable elastomer composition having a content of impurity metals of not more than 300 ppm and a pH value of 5.0 to 11.0. The filler can be obtained by subjecting a starting carbon black filler to extraction treatment with an acid to reduce a content of impurity metals of the filler and then alkali treatment with an alkali to neutralize a remaining acid. The filler does not cause a crosslinking failure even when added to an elastomer composition and can provide an elastomer molded article suitable as a very clean sealing material for semi-conductor production apparatuses.Type: GrantFiled: January 16, 2001Date of Patent: January 27, 2004Assignee: Daikin Industries, Ltd.Inventors: Hiroyuki Tanaka, Masanori Hasegawa, Tsuyoshi Noguchi
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Patent number: 6680357Abstract: Acrylic Modified Fluoropolymers based on vinylidene fluoride polymers are disclosed wherein the acrylic phase is capable of entering into crosslinking reactions. The final cured products provide superior solvent extractability resistance to the fluoropolymer phase.Type: GrantFiled: July 10, 2000Date of Patent: January 20, 2004Assignee: ATOFINA Chemicals, Inc.Inventors: Lotfi Hedhli, Larry Wempe
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Publication number: 20030230834Abstract: Fluoropolymer materials containing tetrafluoroethylene monomers, such as PTFE, are significantly swollen by supercritical carbon dioxide at high temperatures and pressures. The swollen fluoropolymer is processable by molding, extrusion, and other techniques. In addition, the fluoropolymer may be sintered at significantly lower temperatures compared to a nonswollen fluoropolymer material. The melting temperature of fluorinated polymers containing tetrafluoroethylene and triflouroethylene monomers which are swollen with supercritical carbon dioxide is significantly reduced, thereby permitting manufacturing operations such as extruding and molding to be performed at lower temperatures and with reduced risk of decomposition.Type: ApplicationFiled: October 11, 2002Publication date: December 18, 2003Inventors: Kenneth Wynne, Takako Ohsaka, Suresh Shenoy, Sadashige Irie, Youosuke Ohsaka
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Patent number: 6664336Abstract: An aqueous curing composition of a fluoroelastomer containing a fluoroelastomer, a fluororesin, a curing agent, which further contains a surfactant which leaves 0.3 wt. % or less of a decomposition residue after being heated at 300° C. for 30 minutes and/or a polar solvent having a boiling point of 300° C. or less and a surface tension of at least 30 dyne/cm at room temperature. When a coating film is formed from this aqueous composition, a large amount of the fluororesin contained therein can be bled up on the surface of the coating film. Thus, the durability and non-tackiness of the coating film can be improved.Type: GrantFiled: September 10, 2001Date of Patent: December 16, 2003Assignee: Daikin Industries, Ltd.Inventors: Nobuyuki Tomihashi, Koichiro Ogita, Kiyotaro Terasaka, Yasukazu Nakatani
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Patent number: 6664338Abstract: Fluoroelastomers curable by ionic route based on vinylidene fluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidene fluoride (VDF) substantially polar end group free; b) from 0.05 to 5 phr of accelerant; c) from 0.5 to 15 phr of curing agent; d) from 1 to 40 phr of one or more inorganic acid acceptors, preferably bivalent metal oxides; e) from 0 to 2.5 phr, preferably from 0 to 1.5 phr of one or more basic compounds preferably hydroxides of bivalent metals or of weak acid metal salts; f) from 0 to 80 phr of reinforcing fillers.Type: GrantFiled: April 23, 2002Date of Patent: December 16, 2003Assignee: Ausimont S.p.A.Inventors: Anna Staccione, Margherita Albano
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Publication number: 20030229167Abstract: PTFE pellets with good bulk density, homogeneity, and flowability properties may be obtained by:Type: ApplicationFiled: June 10, 2002Publication date: December 11, 2003Applicant: Asahi Glass Fluoropolymers USA, INC.Inventors: Pamela J. Baron, Gary Eckrote, Tonya James, Ronald Partridge, Timothy C. Duzick
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Publication number: 20030220442Abstract: The present invention provides a process of reducing the amount of fluorinated emulsifier in an aqueous fluoropolymer dispersion by contacting the aqueous fluoropolymer dispersion with an anion exchange resin in a non-fixed resin bed, the process comprising:Type: ApplicationFiled: May 5, 2003Publication date: November 27, 2003Applicant: 3M Innovative Properties CompanyInventors: Rebekka Epsch, Klaus Hintzer, Gernot Lohr, Werner Schwertfeger
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Patent number: 6653379Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP. These fluorothermoplastic compositions have a flex life that fits the equation: log(flex life cycles)≧0.71+4.0*(MFI(−0.294)), a method of making fluorothermoplastic compositions, a method of improving stress crack resistance, and fluorothermoplastic articles.Type: GrantFiled: July 12, 2001Date of Patent: November 25, 2003Assignee: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Publication number: 20030187144Abstract: Fluoroelastomers curable by ionic route based on vinylidenfluoride (VDF) comprising:Type: ApplicationFiled: April 23, 2002Publication date: October 2, 2003Applicant: AUSIMONT S.p.A.Inventors: Anna Staccione, Margherita Albano
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Patent number: 6624251Abstract: Disclosed are new fluid resistant, in particular resistant to chemically basic compounds, for example those compounds containing amines, and exceptional processing fluorine containing thermoplastic vulcanizate compositions comprising a continuous phase of at least one melt-formable thermoplastic fluorocarbon resin and a disperse phase consisting of a blend of at least two vulcanizable fluorine containing elastomers with at least one of the fluoroelastomers being a terpolymer of vinylidene fluoride/tetrafluoroethylene/propylene. The vinylidene fluoride/tetrafluoroethylene/propylene fluoroelastomer comprises between 5 and 95 weight percent of the total dispersed elastomer phase, which the total disperse elastomer phase comprises from between 40 and 90 weight percent based on the total amount of the continuous phase and the disperse phase combined.Type: GrantFiled: June 20, 2000Date of Patent: September 23, 2003Assignee: Freudenberg-NOK General PartnershipInventor: Craig A. Chmielewski
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Publication number: 20030171444Abstract: Semicrystalline sulphonic fluorinated ionomers having an equivalent weight higher than 700 g/eq, up to 1,700, comprising:Type: ApplicationFiled: December 20, 2002Publication date: September 11, 2003Inventors: Vincenzo Arcella, Alessandro Ghielmi, Giulio Tommasi
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Patent number: 6593416Abstract: Curable fluoroelastomer compositions having improved compression set after curing are provided, as well as compositions that are of relatively high purity. These compositions include a hydrogen-containing fluoroelastomer having interpolymerized units derived from a cure-site monomer, a curative (optionally with a co-agent), and an organo-onium. When the fluoroelastomer contains units derived from vinylidene fluoride, the composition is essentially free from an inorganic acid acceptor. Methods of improving the compression of cured fluoroelastomer and cured fluoroelastomers having improved compression set are also provided.Type: GrantFiled: April 24, 2001Date of Patent: July 15, 2003Assignee: 3M Innovative Properties CompanyInventors: Werner M. A. Grootaert, William D. Coggio, Klaus Hintzer, Robert E. Kolb, Gernot Löhr
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Patent number: 6579620Abstract: A water-repellent coating has tetrafluoroethylene resin powder, silicone resin binder, and organic solvent. The tetrafluoroethylene resin powder has a ratio of the peak absorbance at 1,800 cm−1 to the peak absorbance at 500 cm−1 of 0.0001 to 0.05 exclusive. A coating film is formed by applying such a coating on a substrate. The coating has the properties of high water repellency, excellent anti-ice-coating, excellent anti-snow-coating, and so on, in spite of not having a large amount of fluororesin powder. In addition, the coating of film keeps the water repellency regardless of whether the coating film is immersed into water for a long time.Type: GrantFiled: November 14, 2001Date of Patent: June 17, 2003Assignees: NTT Advanced Technology Corp., Nippon Telegraph and Telephone Corp.Inventors: Seiichiro Mizuno, Chiemi Nishi, Yasuhiro Tsukamoto, Masaie Fujino, Tsutomu Yanagawa, Takehito Ota, Hiroki Yonezawa, Ken-ichi Takai, Goro Yamauchi
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Patent number: 6566442Abstract: A composition comprising a polymer mixture A of polymers formed by: (a) from 10 to 70% by moles of ethylene (E), (b) from 30 to 90%, by moles of a fluorinated monomer selected from tetrafluoroethylene (TFE), chlorotrifluoroethylene (CTFE), or mixtures thereof, (c) from 0.1 to 30% by moles, with respect to the total amount of monomers (a) and (b), of one or more acrylic monomers; characterized in that the polymer mixture A comprises polymer fractions having a different content of the acrylic comonomer such that the elastic modulus at 23° C. (ASTM D1708) of said polymer mixture A is lower than at least 10% of the elastic modulus of a polymer formed by monomers a), b) and c) wherein the polymer fractions have substantially an equal content of the acrylic comonomer.Type: GrantFiled: May 22, 2002Date of Patent: May 20, 2003Assignee: Ausimont S.p.A.Inventors: Julio A. Abusleme, Claudia Manzoni
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Patent number: 6566440Abstract: A polytetrafluoroethylene agglomerated product obtained from a polytetrafluoroethylene powder and a coke powder, wherein the polytetrafluoroethylene powder contains at least 8.3 mass % of a polytetrafluoroethylene fine powder having a particle diameter of from 0.1 to 9.5 &mgr;m, and the mass ratio of the polytetrafluoroethylene powder/the coke powder is 95-60/5-40.Type: GrantFiled: November 14, 2001Date of Patent: May 20, 2003Assignee: Asahi Glass Company, LimitedInventors: Satoru Kuroki, Takamichi Ishikawa, Masumi Nomura, Tadao Chiba
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Patent number: 6545081Abstract: A moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and at least one conductive filler (C) selected from the group consisting of a non-fibrous conductive filler and a metallic fibrous material, both, having a volume resistivity lower than 102 &OHgr;·cm, and a moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and carbon fiber (E).Type: GrantFiled: June 8, 2001Date of Patent: April 8, 2003Assignee: Kureha Kagaku Kogyo K.K.Inventors: Naomitsu Nishihata, Kiyomi Ohuchi, Masahito Tada
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Patent number: 6541552Abstract: To provide the aqueous-dispersing composition of synthetic resin which is excellent in stain-proofing property, weather resistance and storage stability and is capable of forming a coating film having a high gloss. The aqueous-dispersing composition of synthetic resin comprises an aqueous dispersion of synthetic resin and a condensate of tetrafunctional silicate compound represented by the formula (I): wherein R comprises R1 (R1 is methyl and/or ethyl) and R2 (R2 is at least one linear or branched alkyl group having 3 to 10 carbon atoms), n is 2 to 15, and contains the condensate of tetrafunctional silicate compound in an amount of 1 to 100 parts by weight on the basis of 100 parts by weight of solid content in the aqueous dispersion of synthetic resin.Type: GrantFiled: May 16, 2000Date of Patent: April 1, 2003Assignee: Daikin Industries, Ltd.Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
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Patent number: 6515064Abstract: To provide an elastomer molded article for a semiconductor manufacturing equipment which not only has cleanliness required but also has an excellent plasma resistance and an excellent property of metal-elution inhibition. The elastomer molded article is obtained by crosslinking a crosslinkable elastomer composition comprising a crosslinkable elastomer component and a carbon black filler having an average particle size of not more than 700 &mgr;m and an impurity metal content measured by an ashing analysis method of not more than 300 ppm and has an impurity metal content measured by an ashing analysis method of not more than 100 ppm. An increasing rate of particles generated by irradiating oxygen plasma to the article is not more than 500% or an amount of impurity metals extracted from the article with a 50% aqueous solution of HF is not more than 500 ppb.Type: GrantFiled: July 6, 2001Date of Patent: February 4, 2003Assignee: Daikin Industries, Ltd.Inventors: Hiroyuki Tanaka, Masanori Hasegawa, Tsuyoshi Noguchi, Katsuhiko Higashino
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Patent number: 6512041Abstract: A crosslinkable fluororubber composition comprising (A) a polymer comprising a perfluoro compound having at least two alkenyl groups and a divalent perfluoroalkylene or perfluoropolyether structure a compound having at least two hydrosilyl groups, the hydrosilyl-bearing compound being added to some of the alkenyl groups in the perfluoro compound, (B) a reinforcing filler, and (C) a crosslinking agent having a hydrosilyl group and capable of addition reaction or a peroxide crosslinking agent, and (D) a surface treating agent having at least one fluoroalkenyl group and silanol group in the molecule, is roll millable and compression moldable. It cures into products having satisfactory solvent resistance, chemical resistance, heat resistance, and low-temperature properties.Type: GrantFiled: August 15, 2001Date of Patent: January 28, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yasuhisa Osawa, Shinichi Sato, Takashi Matsuda
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Publication number: 20030013791Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP.Type: ApplicationFiled: July 12, 2001Publication date: January 16, 2003Inventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Publication number: 20030013787Abstract: Highly fluorinated ion-exchange polymers achieve dissolution in aqueous tetrahydrofuran at lower pressures and temperatures than in other solvents, with few or no side products being formed.Type: ApplicationFiled: July 12, 2002Publication date: January 16, 2003Inventor: Qun Sun
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Publication number: 20020193500Abstract: A fluoroclastomer latex is produced that is capable of forming films having excellent water resistance. In a first step, polymerization of fluorinated monomers is carried out in the presence of fluorinated surfactants at a pH of 3-8. The pH of the resultant fluoroelastomer emulsion composition is then adjusted to 5-9 and the emulsion is concentrated to yield a solids-rich latex.Type: ApplicationFiled: August 28, 2001Publication date: December 19, 2002Inventors: Klaus Hintzer, Gernot Lohr, Albert Killich, Werner Schwertfeger
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Publication number: 20020165303Abstract: A durable water repellent agent comprising a repellent and a fluorine-containing resin, wherein the repellent comprises at least one member selected from the group consisting of a perfluoroalkyl group-containing substance (I), a fluorine-containing surfactant (II), a fluorine-containing oil (III), a fluorosilicone oil (IV) and a silicone oil (V), the solid content weight ratio between said repellent and said fluorine-containing resin being (repellent):(fluorine-containing resin)=50:50 to 99:1.Type: ApplicationFiled: May 2, 2002Publication date: November 7, 2002Inventors: Susumu Wada, Kayoko Honda, Keiko Kunimasa, Katsuhiko Imoto
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Patent number: 6476144Abstract: Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.Type: GrantFiled: January 28, 2000Date of Patent: November 5, 2002Assignee: Daikin Industries, Ltd.Inventors: Ken Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
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Patent number: 6475522Abstract: Synthetic polymer compositions contain antibiotics as antidegradants. Antibiotics from classes of glycopeptides and &bgr;-lactams have been found to prevent or inhibit synthetic polymer degradation.Type: GrantFiled: August 30, 2000Date of Patent: November 5, 2002Assignee: Hammond Group, Inc.Inventor: Richard F. Grossman
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Patent number: 6465577Abstract: Spherulites in a molded article obtained from a melt-processable crystalline fluorine-containing resin composition are minimized to give the transparent molded article having a smooth surface and being resistant to contamination. An agent for minimizing spherulite size which comprises an amorphous fluorine-containing polymer or a fluorine-containing multi-segment polymer. The fluorine-containing multi-segment polymer comprises an amorphous segment and a crystalline segment.Type: GrantFiled: April 11, 2001Date of Patent: October 15, 2002Assignee: Daikin Industries, Ltd.Inventors: Ken Okanishi, Minoru Yoshida, Tatsuo Suzuki, Tetsuo Shimizu, Takahisa Aoyama
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Patent number: 6448328Abstract: The present invention relates to stable aqueous dispersions comprising one or a number of hydroxylated fluorinated copolymers consisting of vinylidene fluoride and/or of trifluoroethylene, of tetrafluoroethylene, of one or a number of hydroxylated allylic monomers, and optionally of one or a number of monomers chosen from non-hydroxylated vinyl ethers. The stable aqueous dispersions optionally further comprise one or a number of acrylic copolymers consisting of methyl methacrylate and of one or a number of other alkyl (meth)acrylate(s), which are optionally functionalized or substituted. The stable aqueous dispersions are prepared by dispersion in water of an organic solution of the above copolymers and then by removal of the organic solvent. They can in particular be used as binders for aqueous-phase paints or varnishes.Type: GrantFiled: May 30, 1995Date of Patent: September 10, 2002Assignee: AtofinaInventors: Patrick Kappler, Jean Luc Perillon, Catherine Savary
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Patent number: 6447913Abstract: To provide a thermoplastic polyester resin composition which has a very good durability to alkaline solutions for a long period of time. That is, a thermoplastic polyester resin composition, wherein a thermoplastic polyester resin (A) is compounded with 1-25% by weight (in the total composition) of impact resistance rendering materials (B), 0.1-15% by weight (in the total composition) of a silicone compound and/or a fluorine compound (C), 1-50% by weight (in the total composition) of an inorganic filler (D), and 0.1-10% by weight of at least one polyfunctional compound (E) selected from the group consisting of an epoxy compound, an isocyanate compound and a carboxylic acid dianhydride. A molded article of the present invention has anti-stress properties even in a weld part thereof.Type: GrantFiled: January 25, 2001Date of Patent: September 10, 2002Assignees: Polyplastics Co., LTD, Denso CorporationInventors: Kazufumi Watanabe, Takayuki Ishikawa, Toru Katsumata, Tetsuya Hirose, Hiroyuki Wakabayashi
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Patent number: 6447917Abstract: A friction material for brake including reinforcing fibers, a friction modifier, a lubricant, and a binder, characterized by containing, as a part of the component of the friction modifier, 2 to 5 wt % zeolite, 0.8 to 2 wt % antimony oxide and 0.2 to 1 wt % fluorine based polymer.Type: GrantFiled: December 27, 2000Date of Patent: September 10, 2002Assignee: Nissan Motor Co., Ltd.Inventors: Yoshio Ogata, Yosuke Sasaki