Patents Assigned to Asahi Glass
  • Process for producing fluorinated polymer having ion-exchange groups
    Patent number: 4298699
    Abstract: A fluorinated copolymer having ion-exchange group is produced by copolymerizing a fluorinated ethylenic unsaturated monomer and a functional monomer having a functional group of carboxylic acid group or a group which can be converted to carboxylic acid group in an aqueous medium in the presence of a polymerization initiator source. The fluorinated copolymer obtained by the copolymerization is treated with an alcohol at higher than 20.degree. C. in the form of particles before a molding. The melt flowability of the fluorinated copolymer is improved.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: November 3, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Tatsuro Asawa, Haruhisa Miyake, Masami Yamashita, Yoshio Sugaya
  • Production of alkali metal hydroxide
    Patent number: 4297182
    Abstract: A gas and liquid permeable cathode is bonded on an ion-exchange membrane and the composite electrode is used in an electrolytic cell for a production of sodium hydroxide by an electrolysis of an aqueous solution of sodium chloride. The cathode comprises a thermally decomposed nickel obtained from a nickel salt of fatty acid, Raney nickel, stabilized Raney nickel or carbonyl nickel and a polytetrafluoroethylene.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: October 27, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yoshio Oda, Takeshi Morimoto, Kohji Suzuki
  • Roll for manufacturing float glass
    Patent number: 4293335
    Abstract: A lift-out roll for conveying a float glass ribbon formed on a bath of molten metal having excellent corrosion resistance to molten tin and high oxidation resistance is provided. The roll is made of a heat-resistant cast steel consisting essentially of 0.01-2.0 wt. % of a rare earthmetal; 0.1-3.0 wt. % of Al; 0.2-0.45 wt. % of C.; up to 2.0 wt. % of Si; up to 2.0 wt. % of Si; up to 2 wt. % of Mn; up to 0.04 wt. % of P; up to 0.04 wt. % of S; 19-22 wt. % of Ni; 23-27 wt. % of Cr and the balance of Fe.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: October 6, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Ryo Tamamura, Yukinori Kutsukake
  • Metallic panel reinforcing system
    Patent number: 4290641
    Abstract: A metallic panel is reinforced by a FRP reinforcing beam by fixing both ends of the reinforcing beam on the metallic panel. The reinforcing beam comprises two or more flanges and one or more web plate connecting to said flanges at the position near the metal panel side from the center line of the flanges but departed from the edges of the flanges. The reinforcing beam is arranged to place the flanges in substantially perpendicular to the metallic panel.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: September 22, 1981
    Assignee: Asahi Glass Company, Limited
    Inventors: Seiroku Miyauchi, Yasuo Sagane, Kazuo Irie
  • Process for preparing electrode
    Patent number: 4290859
    Abstract: An electrode is prepared by plating on an electrode substrate in a dispersion coating method to form a metal layer partially exposed porous particles of Ag on the electrode substrate, and, if desired, a middle layer is formed between the electrode substrate and the metal layer. The porous particles can be formed by etching an alloy of the particles.
    Type: Grant
    Filed: May 16, 1980
    Date of Patent: September 22, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yoshio Oda, Hiroshi Otouma, Eiji Endoh
  • Process for producing molded ceramic or metal
    Patent number: 4283360
    Abstract: An organic solvent soluble resin and insoluble resin, and a ceramic powder or a metallic powder, if desired, a plasticizer and a desired additive are blended and molded and a molded product is treated with an organic solvent to dissolve the soluble resin, the plasticizer etc. and then, the treated product is fired to obtain a molded ceramic or metal having no cracking nor deformation and having high density.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: August 11, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Ichiro Henmi, Akinori Noda, Takuro Ono
  • Method for forming electrochromic film
    Patent number: 4282272
    Abstract: An amorphous electrochromic film prepared by vacuum evaporation under relatively high pressure of 2.times.10.sup.-4 -2.times.10.sup.-3 torr.The evaporated film is porous with packing density less than 0.65 and exhibits excellent reversibility after heat treatment at 250.degree. C.-350.degree. C. whereby it is optimum for an electrochromic device sealed with a sealant of tetrafluoroethylene-ethylene copolymer having no reactivity with electrolyte, low moisture permeability, excellent chemical properties and good adhesiveness.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: August 4, 1981
    Assignee: Asahi Glass Company, Limited
    Inventors: Kenzi Matsuhiro, Yasushi Masuda
  • Macromolecular adsorbent containing pendant difluoroalkyl phosphate groups for adsorbing heavy metal ions
    Patent number: 4277565
    Abstract: A macromolecular adsorbent is suitable for recovering heavy metal ions such as uranium ions from a dilute solution such as sea water and is a polymer having pendant groups having the formula ##STR1## wherein R.sup.1 represent a C.sub.1 -C.sub.8 divalent organic group; R.sup.2 and R.sup.3 respectively represents a C.sub.1 -C.sub.5 divalent organic group; p, q, r and l respectively represent 0 or 1; R.sub.f represents a C.sub.1 -C.sub.10 divalent perfluoro group; X.sup.1 and X.sup.2 respectively represent hydroxyl group or a hydroxyl convertible group or atom.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: July 7, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yoshio Oda, Masaaki Yamabe, Masao Kato
  • Process for preparing a propylene-tetrafluoroethylene copolymer
    Patent number: 4277586
    Abstract: Propylene and tetrafluoroethylene are copolymerized at the low temperature of 0.degree.-50.degree. C. in an aqueous medium in the presence of a specific redox catalyst system. The specific redox catalyst system comprises (1) a water soluble inorganic persulfate, (2) a water soluble thiosulfate or bisulfite and (3) a water soluble iron salt, and preferably further comprises a reducing sugar and a water soluble pyrophosphate. The propylene-tetrafluoroethylene copolymer having high molecular weight and low Mooney viscosity can be prepared at high copolymerization reaction rates.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: July 7, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Hiroshi Ukihashi, Masaaki Yamabe, Hiroaki Kojima
  • Moldable polyphenylenesulfide
    Patent number: 4274993
    Abstract: A moldable polyphenylenesulfide is obtained by a heat-treatment of a partially crosslinked or noncrosslinked polyphenylenesulfide at a temperature of higher than 290.degree. C. in an atmosphere being substantially absence of oxygen.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: June 23, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Shigeyuki Narisawa, Hiroshi Yanase, Fukuo Kanno
  • Process for producing fluorovinyl ether
    Patent number: 4275226
    Abstract: A fluorovinyl ether having the formulaXRfCF.sub.2 OCF.dbd.CF.sub.2 (I)wherein X represents --H, --Cl, --Br, --F, --CO.sub.2 R, --CONRR', --SO.sub.2 F, ##STR1## or --COF and R represents a C.sub.1 -C.sub.10 alkyl group; R' represents --H or a C.sub.1 -C.sub.10 alkyl group; Rf represents a C.sub.1 -C.sub.20 bifunctional perfluoro-containing group is produced by reacting an iodine-containing ether having the formulaXRfCF.sub.2 OCF.sub.2 CF.sub.2 I (II)in the presence of a catalytic component selected from the group consisting of Mg, Cu, Zn, Zn-Cu, Zn-Cd, Zn-Pd, Zn-Hg, Sn, Sb, organomagnesium compounds and organolithium compounds.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: June 23, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Masaaki Yamabe, Seisaku Kumai, Seiji Munekata
  • Electrode compartment
    Patent number: 4272352
    Abstract: An electrode compartment is a part of a filter press type electrolytic cell for electrolyzing an alkali metal chloride. The electrode compartment comprises lower, upper and side frames to form an electrolyzing chamber, and current lead bars which are inserted from the bottom of the lower frame in the vertical direction to be parallel to lifting flow of an electrolyte and the electrode being mechanically held through fitting means on the lead bars in the electrolyzing chamber.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: June 9, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Tanzo Jizaimaru, Hideya Tanaka, Yasuo Sajima
  • Cation exchange membrane of fluorinated polymer for electrolysis and electrolysis using the membrane
    Patent number: 4270996
    Abstract: A cation exchange membrane of a fluorinated polymer used for an electrolysis of an alkali metal chloride is obtained by treating a cation exchange membrane having ion exchange groups of --COOM (M is hydrogen atom or an alkali metal atom) or groups being convertible to said groups and having an ion exchange capacity (A.sub.R) of 0.5 to 2.0 meq/g dry polymer in a hydrolyzed form, to give a weight gain percent (.DELTA.W.sub.R) in the range of .DELTA.W.sub.R =1.6e.sup.1.7A R as the upper side; .DELTA.W.sub.R =0.8e.sup.1.7A R as the lower side; A.sub.R =0.5 as the left side and A.sub.R =2.0 as the right side shown in FIG. 1 (log scale on ordinate) in an aqueous medium of a base or a salt at a concentration of 1 to 20 wt. % at the temperature of 0.degree. to 60.degree. C. after the hydrolysis or at the time of the hydrolysis.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: June 2, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Manabu Suhara, Shoziro Goto, Kiyotaka Arai
  • Electrolysis of aqueous solution of potassium chloride
    Patent number: 4261803
    Abstract: An electrolysis of an aqueous solution of potassium chloride is carried out by employing a fluorinated cation exchange membrane having an ion-exchange capacity of 0.8 to 2.0 meq/g dry polymer and having carboxylic acid groups as functional groups and maintaining a concentration of an aqueous solution of potassium hydroxide in a cathode compartment in a range of 20 to 45 wt. % and maintaining a calcium concentration in the aqueous solution of potassium chloride to lower than 0.05 mg/liter.The purification of the aqueous solution of potassium chloride to reduce the calcium concentration is carried out in a system comprising a chelate ion-exchange substance.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: April 14, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Manabu Suhara, Yoshio Oda
  • Antenna system for window glass of automobile
    Patent number: 4260989
    Abstract: An antenna system for a rear window glass of an automobile comprises a defogging electric heating element and patterned conductive strips for antenna wherein the configuration of the antenna and the configuration of the bus bars for the electric heating element are modified to improve non-directivity for FM radio broadcast wave for a radio receiver in the automobile.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: April 7, 1981
    Assignee: Asahi Glass Compamy, Limited
    Inventors: Kenichi Ishii, Takayasu Hokusho
  • Solution of fluorinated polymer having carboxylic acid salt groups in polar hydroxylic solvent
    Patent number: 4259226
    Abstract: A solution of a fluorinated polymer having groups having the formula--COOMwherein M represents an alkali metal atom or a metal atom in group II a or II b of the periodic table or ammonium group or an amine group in a highly polar organic solvent.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: March 31, 1981
    Assignee: Asahi Glass Company Ltd.
    Inventors: Manabu Suhara, Kiyotaka Arai
  • Cation exchange membrane of fluorinated polymer for electrolysis and preparation thereof
    Patent number: 4255523
    Abstract: A cation exchange membrane of a fluorinated polymer is formed by incorporating fibrils of polytetrafluoroethylene into a cation exchange resin of a fluorinated polymer having carboxylic acid groups or functional groups which can be converted to carboxylic acid groups.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: March 10, 1981
    Assignee: Asahi Glass Company, Limited
    Inventors: Hiroshi Ukihashi, Tatsuro Asawa, Tomoki Gunjima
  • Electrode
    Patent number: 4255247
    Abstract: An electrode is prepared by etching an alloy substrate comprising a first metallic component selected from the group consisting of chromium, manganese, tantalum, niobium, vanadium, titanium, silicon, zirconium, germanium, scandium, yttrium and lanthanum and a second metallic component selected from the group consisting of iron, nickel, tungsten, copper, silver, cobalt and molybdenum to remove at least part of the first metallic component.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: March 10, 1981
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshio Oda, Hiroshi Otouma, Eiji Endoh
  • Electrolysis of aqueous solution of alkali metal chloride
    Patent number: 4251333
    Abstract: An electrolysis of an aqueous solution of an alkali metal chloride is carried out to produce an alkali metal hydroxide having a concentration of 30 wt. % or more and chlorine by using a modified cation exchange membrane of a fluorinated polymer having carboxylic acid type ion exchange groups, which has an ion exchange capacity of 1.0 to 2.2 meq/g.dry polymer and at least one of whose surface layer has lower ion exchange capacity which is from 45 to 95% of that of the main part.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: February 17, 1981
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Manabu Suhara, Kiyotaka Arai
  • One side surface molten metallic coating apparatus
    Patent number: 4246865
    Abstract: One side surface of a strip of metal is contacted with a surface of a molten metal bath which is locally raised under ultrasonic vibration whereby a continuous coating is attained on one side only.A tool for imparting the ultrasonic vibration to a bath is immersed near the bath surface and the ultrasonic vibrator connected to the tool is contained in hollow holding means dipped in the bath.In accordance with the apparatus of the present invention, the worn tool can be exchanged for a short time and the molten metallic coating on one side only of the strip of metal can be attained for a long time.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: January 27, 1981
    Assignees: Asahi Glass Company Limited, Nihon Parkerizing Co., Ltd.
    Inventors: Shoji Shimada, Yasunobu Matsushima, Yokichi Sato, Kuniharu Matsumoto, Kazuyuki Akeyoshi, Takayuki Tobita