Patents Examined by Henry S. Hu
  • Binder for inorganic fiber and heat insulating acoustic inorganic fiber material
    Patent number: 7019071
    Abstract: A binder for inorganic fiber, which comprises an aldehyde condensable thermosetting resin precursor and a fluorocarbon compound having a polyfluoroalkyl group.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: March 28, 2006
    Assignee: Asahi Fiber Glass Company, Limited
    Inventors: Akira Inoue, Yuka Masaki, Manabu Iizuka
  • Fluorinated copolymers for microlithography
    Patent number: 7019092
    Abstract: Fluorinated copolymers useful in photoresist compositions and associated processes for microlithography are described. These copolymers are comprised of a fluoroalcohol or protected fluoroalcohol functional group which simultaneously imparts high ultraviolet (UV) transparency and developability in basic media to these materials and a repeat unit derived from an acrylate monomer containing a fluoroalkyl group or a hydroxyl substituted alkyl group. The materials of this invention have high UV transparency, particularly at 193 and 157 nm, which makes them highly useful for lithography at these short wavelengths.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: March 28, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Andrew Edward Feiring, Frank L. Schadt, III, Gary Newton Taylor
  • Process for the manufacture of thermally stable PVDF
    Patent number: 7012122
    Abstract: The present invention relates to a process for the manufacture of PVDF homopolymer or copolymer by radical polymerization of vinylidene fluoride (VDF), and optionally of a comonomer, in aqueous dispersion and in the presence of a transfer agent, of a persulphate as radical initiator, optionally of a surface-active additive and optionally of a paraffin wax, in which: a) sodium acetate is added, either at the start of or during or after the polymerization, b) a potassium alkylsulphonate is optionally added after the polymerization, c) an aqueous PVDF dispersion is obtained, d) the PVDF is collected by atomizing the dispersion obtained in c) with air at a temperature of between 120 and 220° C., the aqueous dispersion obtained in c) not being washed with water before atomizing.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 14, 2006
    Assignee: Arkema
    Inventors: Patrick Kappler, Veronique Gauthe
  • Fullerene-based proton conductive materials
    Patent number: 7008713
    Abstract: A fullerene-based proton conductor including a proton conductive functional group connected to the fullerene by an at least partially fluorinated spacer molecule. Also, a polymer including at least two of the proton conductors that are connected by a linking molecule. Further, an electrochemical device employing the polymer as a proton exchange membrane, whereby the device is able to achieve a self-humidifying characteristic.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: March 7, 2006
    Assignee: Sony Corporation
    Inventors: Berthold Nuber, Bjoern Pietzak
  • Fluorinated terpolymer
    Patent number: 7009017
    Abstract: A fluorine-containing terpolymer with distinguished transparency and strength at ordinary temperature and at elevated temperatures when heated, which comprises 20–98% by weight of tetrafluoroethylene, 1–40% by weight of perfluoro(ethyl vinyl ether) and 1–40% by weight of perfluoro(propyl vinyl ether) and has a specific melt viscosity of 0.1×103–110×103 Pa·s (372° C.). The fluorine-containing terpolymer preferably has a comonomer ratio of perfluoro(propyl vinyl ether) to perfluoro(ethyl vinyl ether) of 1.0 or more by weight.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: March 7, 2006
    Assignee: Unimatec Co., Ltd.
    Inventors: Satoshi Kurihara, Daisuke Fujihara, Takashi Enokida
  • Flame-retarded poly(ester)carbonates
    Patent number: 7005471
    Abstract: A thermoplastic molding composition comprising poly(ester)carbonate is disclosed. The composition that is characterized by its flame resistance contains a PTFE blend in an amount of 0.2 to 0.6% and an organic salt of an alkali metal or alkaline earth metal in an amount of 0.01 to 0.1%. The PTFE blend contains a blending partner and PTFE wherein amount of PTFE is 30 to 70% relative to the weight of the PTFE blend.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 28, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Horn, Hans Franssen
  • Fluorine-containing resin material lowly permeable to liquid chemical
    Patent number: 6998454
    Abstract: To provide a suitable material having improved impermeability to liquid chemicals and cracking resistance while retaining excellent heat resistance and processability inherent in FEP-based fluororesins, a molded article of which is useful in the field of semiconductor production apparatus and the like. The present invention provides a fluorine-containing resin material comprising a fluorine-containing copolymer comprising 85 to 95.5% by mole of a repeating unit derived from tetrafluoroethylene, 5 to 10% by mole of a repeating unit derived from hexafluoropropylene and 0.1 to 5% by mole of a repeating unit derived from at least one higher perfluoro(vinyl ether) represented by the formula (1): CF2?CF—O—Rf1??(1) wherein Rf1 is a perfluoroalkyl group having 5 to 10 carbon atoms or a perfluoro(alkoxyalkyl) group having 4 to 17 carbon atoms, and molded article thereof.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: February 14, 2006
    Assignee: Daikin Industries, Ltd.
    Inventors: Takahiro Taira, Takahisa Aoyama, Katsuhide Otani, Tetsuo Shimizu
  • Curable perfluoroelastomer composition
    Patent number: 6992143
    Abstract: A non-black filled perfluoroelastomer composition comprising a) a perfluoroelastomer having nitrile group cure sites, b) a curative selected from the group consisting of i) a bis(aminophenol) and ii) a compound that decomposes at curing temperatures to generate ammonia and c) 1–25 phr hydrophobic silica filler. Cured compositions have surprisingly better compression set than do similar compounds containing hydrophilic silica.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: January 31, 2006
    Assignee: DuPont Dow Elastomers LLC
    Inventor: Shuhong Wang
  • Coating liquid for producing insulating film having low dielectric constant
    Patent number: 6989420
    Abstract: Coating liquid for producing insulating film having low dielectric constant is provided. It was achieved by coating liquid for producing insulating film having low dielectric constant comprising a thermosetting resin having carbon-carbon unsaturated bond, an organic solvent, and less than two molecular equivalents of water to the carbon-carbon unsaturated bond.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: January 24, 2006
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yuji Yoshida, Naoya Satoh
  • Vinylidene fluoride polymer having a fraction of non-transferred chains and its manufacturing process
    Patent number: 6989427
    Abstract: Blends of PVDF (polyvinylidene fluoride) homopolymer or copolymer with ABC triblock copolymers are useful for manufacturing parts which may be sheets, film, tubes, rods, centrifugal pump components and containers. The PVDF comprises a fraction of non-transferred chains of very high molar mass which are insoluble in the usual solvents for PVDF, such as DMF (dimethylformamide), DMSO (dimethyl sulphoxide) and NMP (N-methylpyrrolidone), the polymer fraction associated with these high-mass chains having a dynamic viscosity of greater than 50 kpoise at 230° C. and at a shear rate of 100 s?1, and has spherulites with a size between 0.5 and 4 ?m.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: January 24, 2006
    Assignee: Arkema
    Inventor: Thierry Pascal
  • Method for producing nanostructured metal-oxides
    Patent number: 6986818
    Abstract: A synthetic route for producing nanostructure metal-oxide-based materials using sol-gel processing. This procedure employs the use of stable and inexpensive hydrated-metal inorganic salts and environmentally friendly solvents such as water and ethanol. The synthesis involves the dissolution of the metal salt in a solvent followed by the addition of a proton scavenger, which induces gel formation in a timely manner. Both critical point (supercritical extraction) and atmospheric (low temperature evaporation) drying may be employed to produce monolithic aerogels and xerogels, respectively. Using this method synthesis of metal-oxide nanostructured materials have been carried out using inorganic salts, such as of Fe3+, Cr3+, Al3+, Ga3+, In3+, Hf4+, Sn4+, Zr4+, Nb5+, W6+, Pr3+, Er3+, Nd3+, Ce3+, U3+ and Y3+.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: January 17, 2006
    Assignee: The Regents of the University of California
    Inventors: Thomas M. Tillotson, Randall L. Simpson, Lawrence W. Hrubesh, Alexander Gash
  • Method of modifying a fluoropolymer and articles thereby
    Patent number: 6986947
    Abstract: 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: Grant
    Filed: October 9, 2003
    Date of Patent: January 17, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Gerald Rainer Adalbert Hofmann
  • High performance polyolefin blends for industrial pallets other articles and a process for the preparation thereof
    Patent number: 6987148
    Abstract: A thermoplastic polyolefin blend comprising of a base polymer and up to 25% by wt of an ethylene propylene diene monomer (EPDM), the balance if any consisting of a conventional filler and/or a conventional compatibilizer or interfacial agent is disclosed. The blend of the present invention is prepared by extruding a base polymer with ethylene propylene diene monomer (EPDM) at a temperature in the range of from 150 to 230° C. The blends of the invention exhibit very high mechanical properties at moderate concentrations of EPDM and/or filler, and can be made into industrial pallets either by injection molding or by thermoforming.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: January 17, 2006
    Assignee: Indian Petrochemicals Corporation Limited
    Inventors: Francis Xavier Sodagudi, Pendyala Veera Nageswara Sastry, Bhaskaran Ramasami
  • Fluoropolymers resistant to stress cracking
    Patent number: 6984697
    Abstract: 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: Grant
    Filed: October 7, 2003
    Date of Patent: January 10, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
  • Resin composition with a vinyl alicyclic hydrocarbon polymer
    Patent number: 6953819
    Abstract: A resin composition comprising a vinyl alicyclic hydrocarbon polymer and a hindered amine light-resistance stabilizer having a number average molecular weight (Mn) of 1,000 to 10,000 and having excellent processing stability, light-resistance stability, heat resistance and transparency, and a light guide plate obtained by forming or molding the resin composition.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: October 11, 2005
    Assignee: Zeon Corporation
    Inventors: Keisuke Tsukada, Kyoichi Kubomura
  • Plasma resistant elastomer parts
    Patent number: 6946511
    Abstract: Elastomeric parts having a magnetic flux density of at least 10 gauss on their surface deflect a portion of reactive plasmas from contact with the surface of the parts. Thus, such parts may be exposed to reactive plasmas for longer periods, with less degradation, than may similar elastomer parts that do not have such a magnetic flux density on their surface.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: September 20, 2005
    Assignee: DuPont Dow Elastomers, LLC
    Inventors: Kaori Iwamoto, Bunichi Rai, Shinichi Sogo
  • Ultraclean fluoroelastomer suitable for use in the manufacturing of electronic components
    Patent number: 6943228
    Abstract: A curable fluoroelastomer composition for preparing a perfluoroelastomer. The composition includes; (1) a perfluoropolymer having one or more cure-sites selected from a halogen capable of participating in peroxide cure reaction and/or nitrile groups; (2) an organic peroxide and/or a compound capable of effecting curing of the perfluoropolymer through said nitrile groups; and (3) optionally a polyunsaturated coagent. The perfluoropolymer in the composition is essentially free of ionic end groups and the total amount of metal cations in the composition is not more than 10 ?g/g perfluoropolymer. The perfluoroelastomers may be obtained from curing the composition in a sufficiently low amount of metal cations so as to make the fluoroelastomer suitable for use in the semi-conductor industry.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: September 13, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Werner M. A. Grootaert, Klaus Hintzer, Bernhard Hirsch, Harald Kaspar, Robert E. Kolb, Gernot Löhr, Werner Schwertfeger
  • Additives for hydrogenated resins
    Patent number: 6936654
    Abstract: Additives for hydrogenated resins obtainable by using the following components: a) bifunctional perfluoropolyethers having a —COOR end group, optionally in admixture with monofunctional perfluoropolyethers having a —COOR end group, b) mono, bi or polyfunctional hydrogenated monomers having functional groups able to react with the —COOR end groups of compound a); c) polyolefins having functional groups able to react with the block oligomer/polymer obtained by reaction of a) with b), preferably said functional groups being obtained by grafting with maleic anhydride; reacting in a first step a) with b), until disappearance of the —COOR group of component a), and in a second step the product obtained from the reaction of a) with b) with the functionalized polyolefins c).
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: August 30, 2005
    Assignee: Ausimont, S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano
  • Amorphous perfluorinated copolymers
    Patent number: 6936668
    Abstract: Amorphous perfluorinated copolymers, comprising cyclic perfluorinated units deriving from at least two different perfluorinated comonomers, optionally with units deriving from a perfluorinated monomer containing at least one olefinic unsaturation (perfluoroolefin), or comprising cyclic perfluorinated units and units deriving from a perfluorinated monomer containing at least one olefinic unsaturation, said perfluorinated copolymers having the following combination of properties: substantial absence of unstable polar end groups, polymer Tg higher than 120° C., narrow monomeric composition distribution.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: August 30, 2005
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Apostolo, Francesco Triulzi, Vincenzo Arcella, Vito Tortelli, Pierangelo Calini
  • Dispersion composition and method for producing the same
    Patent number: 6936657
    Abstract: There is provided a dispersion composition which has excellent dispersion stability and hardly sediments even after a long-term storage. This dispersion composition is a composition comprising a particulate material dispersed in an organic solvent, wherein a graft copolymer which has a particle diameter of 0.01-1 ?m and self-disperses in said organic solvent is adsorbed to at least a part of the outer surface of said particulate material and a graft chain of said graft copolymer comprises a polysiloxane and an alkylene group of 1-18 carbon atoms.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: August 30, 2005
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Nagayuki Takao, Miyuki Nishimura