Fluorine Patents (Class 264/331.14)
  • Patent number: 6503432
    Abstract: Multilayer articles, particularly multilayer articles having electrical or ionic conductivity, are made using an improved melt extrusion process. The process includes a combination step in which a macroscopically homogeneous mass is formed prior to introduction into an extruder. The multilayer article may include an electrode layer and a separator layer that are extruded onto a metal current collector. Such structures are particularly useful in lithium-ion batteries.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: January 7, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kelly D. Barton, Donald G. Gray, Guy E. Rockwell
  • Publication number: 20020145228
    Abstract: Compositions comprising a fluoropolymer having interpolymerized units derived from a nitrogen-containing cure site monomer and a catalyst composition are provided.
    Type: Application
    Filed: January 30, 2002
    Publication date: October 10, 2002
    Applicant: 3M Innovative Properties Company
    Inventors: Robert E. Kolb, Werner M.A. Grootaert, Klaus Hintzer
  • Patent number: 6413630
    Abstract: A decorative film having an excellent decorative effect, excellent three-dimensional curvature emulating properties, three-dimensional curvature formability, long-term weather resistance and stain resistance. The decorative film comprises one or more transparent layers and a decorative metal layer. The transparent layer has an adhered side for being adhered to a substrate. The transparent layer comprises a copolymer of a tetrafluoroethylene, a hexafluoropropylene and a vinylidene fluoride. The decorative metal layer is on the adhered side of the transparent layer. A substrate can be bonded to the metal layer of the decorative film. The substrate can be a complex three-dimensional shaped substrate. The substrate can also be an injection molded substrate. An adhesive can be disposed on the metal layer of the decorative film, and the adhesive layer can be disposed between the metal layer and the substrate.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: July 2, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Akihiko Nakayama
  • Patent number: 6348117
    Abstract: A method of texturing fluoropolymer film and the textured product produced, which product retains the texture imparted after further processing, such as in thermoforming or molding processes.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: February 19, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark Joseph Tribo, Robert G. Pembleton, Michael James Merrill, Akhileswar Ganesh Vaidyanathan
  • Publication number: 20020004126
    Abstract: A wrinkle-free organic film having a high light transmittance and a uniform film thickness is obtained by forming an organic thin film on the surface of a substrate having a contact angle of the surface to water of 90° or higher, followed by peeling the film therefrom.
    Type: Application
    Filed: September 14, 2001
    Publication date: January 10, 2002
    Applicant: Asahi Kasei Kabushiki Kaisha and Asahi Kasai Electronics Co., Ltd.
    Inventors: Eiji Honda, Tomoki Yamaguchi
  • Patent number: 6312625
    Abstract: In this process for producing a black body decoy flare, a composition which, when combusted, provides black body radiation is extruded. The compositions generally include from about 40% to about 70% metal such as magnesium or aluminum, from about 10% to about 40% polytetrafluoroethylene, and from about 8% to about 30% binder. Important to the operation of the invention is the production of carbon upon combustion of the composition. Accordingly, polyaromatic thermoplastics, such as polystyrene and dimethyl phthalate, serve as the binder.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: November 6, 2001
    Assignee: Cordant Technologies In.
    Inventors: Daniel B. Nielson, Dean M. Lester
  • Patent number: 6287497
    Abstract: A large molded article block free from distortion and residual stress can be obtained by means of a method of producing a polytetrafluoroethylene molded article by compression-molding a polytetrafluoroethylene powder to form a preform and baking the resulting preform with rotating. Furthermore, a film or sheet having less curling and wrinkle can be obtained by cutting the molded article block.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: September 11, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Shoji Kawachi, Kunihiko Honji, Tatsuro Uchida, Osamu Shirasaki, Masahiko Yamada
  • Patent number: 6228310
    Abstract: This thermoplastic composition and process for making articles of the same includes a thermoplastic matrix that includes a resin and filler materials wherein the filler materials includes a combination of fibers, at least one lubricant, and thermally conductive material, for improving tribological performance of thermoplastic materials. In the alternative, a thermally conductive lubricant may be substituted for the combination of the lubricant and the thermally conductive material.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: May 8, 2001
    Assignee: Caterpillar Inc.
    Inventor: Kristy J. Johnson
  • Patent number: 6217963
    Abstract: A seamless tubular composite film wherein a seamless tubular film comprising fluororesin with a film thickness of 5-20 &mgr;m stretched 2-10% in circumferential direction is fitted on the outside of a seamless tubular film comprising a thermosetting polyimide resin, or the precursor polyamic acid and heated at 200-400° C. for anchorage. In addition, in order to give thermal conductivity and antistatic properties leading to inhibition reduction of heating time and inhibition of adhesion of dirt, boron nitride and compatible thermal conductive agents may be dispersed in the polyimide resin, and carbon black and like electric conductive agent may be dispersed in fluororesin. The film is useful as toner fusing member, such as in electrophotographic copying machines and in laser printing.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: April 17, 2001
    Assignee: Gunze Limited
    Inventors: Tsuneo Miyamoto, Junya Kanetake, Naoki Nishiura, Nobuaki Kobayashi, Takashi Kuraoka
  • Patent number: 6207091
    Abstract: A process for producing a fluoroplastic drawn molded article is disclosed in which a fluoroplastic molded article is brought into contact with a heating medium set at a temperature exceeding the static melting point of the molded article and drawn at a temperature at which the molded article does not substantially melt. The fluoroplastic drawn molded article produced in accordance with the present invention is significantlly improved in physical properties such as tensile strength and tensile modulus.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: March 27, 2001
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Tetsuo Kanamoto, Ryoukei Endo, Hiroki Uehara
  • Patent number: 6203735
    Abstract: A method of shaping three-dimensional products by manipulating an expanded polytetrafluoroethylene tubular body into a desired three-dimensional conformation. The present invention entails radially expanding a longitudinally expanded polytetrafluoroethylene (ePTFE) tube to form a radially expanded ePTFE (rePTFE) tube, engaging the rePTFE tube circumferentially about a shaping mandrel, heating the assembly to a temperature below the crystalline melt point temperature, or sintering temperature, of polytetrafluoroethylene to radially shrink the diameter of the rePTFE tube into intimate contact with the shaping mandrel, and heating the assembly to a temperature above the crystalline melt point temperature of polytetrafluoroethylene to amorphously lock the microstructure of the shaped polytetrafluoroethylene body.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: March 20, 2001
    Assignee: Impra, Inc.
    Inventors: Tarun J. Edwin, Scott Randall