Patents Examined by Christopher A. Henderson
  • Patent number: 6077912
    Abstract: A method is disclosed for processing a rubber composition comprising thermomechanically mixing at a rubber temperature in a range of 140.degree. C. to 190.degree. C. for a mixing time of 1 to 20 minutes(i) 100 parts by weight of at least one sulfur vulcanizable elastomer selected from conjugated diene homopolymers and copolymers, natural rubber and copolymers of at least one conjugated diene and aromatic vinyl compound;(ii) 10 to 250 phr of particulate precipitated silica;(iii) 0.01 to 1.0 parts by weight per weight of said silica of an organosilicon compound; and(iv) 0.05 to 10 phr of sodium thiosulfate pentahydrate.Addition of the sodium thiosulfate pentahydrate to sulfur vulcanizable rubber, silica and sulfur containing organosilicon compound decreases the mixing/processing time without sacrificing end product properties.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: June 20, 2000
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard Michael D'Sidocky, David John Zanzig, Shingo Futamura
  • Patent number: 5534599
    Abstract: A rubber composition comprised of elastomer, silica, a silica coupler, sulfur and, optionally, carbon black, in which the silica, silica coupler and at least a portion of the sulfur are added in a non-productive mix stage.Pneumatic tires having treads comprised of such rubber composition are provided.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: July 9, 1996
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul H. Sandstrom, David J. Zanzig, Mark S. Sinsky
  • Patent number: 4857589
    Abstract: A hydrolyzed ethylene-vinyl acetate copolymer having an ethylene content of 20 to 60% by mole and a defree of hydrolysis in the vinyl acetate component of at least 95% by mole, and having an ash content of not more than 20 ppm and an alkali metal content of not more than 5 ppm. The hydrolyzed copolymer of the invention can form films whose gas impermeability is not lowered even at high humidity.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: August 15, 1989
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shinji Okamoto, Masaaki Minakawa, Youiti Neki, Masasi Nakagiri
  • Patent number: 4803260
    Abstract: A recovery method of vinyl chloride resin which comprises formulating an aggregate of vinyl chloride resin by adding to an aqueous dispersion of vinyl chloride resin an organic liquid which is difficultly soluble in water and does not dissolve or swell vinyl chloride resin and mixing the two; dehydrating the aggregate; and drying the same to recover granular vinyl chloride resin, the characteristic feature residing in that said aqueous dispersion is the one which has passed through the screen of 20 to 150-micron meshes.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: February 7, 1989
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Masaaki Nishina, Junsei Kawahuti
  • Patent number: 4680380
    Abstract: Vapor phase chlorosulfonated polyolefins usually contain as much as about 100 to 200 parts of more per million of sulfur dioxide in the chlorosulfonated polyolefin particles, even after degassing, that is released over a period of time. The amount of sulfur dioxide released from vapor phase chlorosulfonated polyolefins can be reduced to an amount of less than 0.
    Type: Grant
    Filed: January 19, 1983
    Date of Patent: July 14, 1987
    Assignee: The B. F. Goodrich Company
    Inventors: George M. Benedikt, Dennis A. Barnes
  • Patent number: 4663467
    Abstract: This invention is a composition comprising(a) a p-hydrocarbylphenylporphyrinato chromium or aluminum with axial counterions; and(b) an aliphatic amine, a heterocyclic amine, an aromatic amine, a phosphine or a phosphine oxide.Another aspect of this invention is a process for the preparation of an alkylene carbonate which comprises contacting an epoxide with a carbon dioxide in the presence of a catalytic amount of the hereinbefore-described composition.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: May 5, 1987
    Assignee: The Dow Chemical Company
    Inventors: William J. Kruper, Jr., David V. Dellar
  • Patent number: 4624873
    Abstract: Improved strands of sausage casings having their filling ends dressed have fewer failures as a result of loose tab-ends. Residual casing material remaining on the end of the casing from severing from other casing material is made to cling to the terminal end by the application of compressive force and heat in a sufficient amount to avoid fusion of the casing material.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: November 25, 1986
    Assignee: Teepak, Inc.
    Inventors: Hugo De Jong, Hugo Thijs
  • Patent number: 4623586
    Abstract: A vibration damping material which is a composite material comprising an organic polymer as matrix and a flake filler dispersed in the polymer matrix. The orientation of the filler flakes is controlled such that the major surfaces of the individual flakes are at an angle of 0.degree..+-.30.degree. with a predetermined plane. The vibration damping material is used to form a damping layer on a surface of the object of vibration damping. In the case of vibration damping of the extensional type using only the damping layer, the aforementioned plane is parallel to the major surfaces of the damping layer. In the case of providing a constraining layer on the damping layer the aforementioned plane is normal to the major surfaces of the damping layer. The flake filler is usually an inorganic material and may be coated with an organic polymer.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: November 18, 1986
    Assignee: Central Glass Company, Limited
    Inventors: Kaoru Umeya, Michiharu Mishima, Yoshihiro Sugata
  • Patent number: 4623484
    Abstract: This invention relates to polymers of the formula ##STR1## wherein Z is polystyrene, or a copolymer comprising styrene and a comonomer or comonomers.Y is selected from the group comprising nitro, acyl, carboxyl, formyl, cyano, carbalkoxy, sulfone, carboxyamide, or halogen; andR is hydroxy, aryloxy, alkoxy, halogen, formyloxy, acyloxy, cyano, amino, substituted amino, carboxyamine, thiol, alkylthio, arylthio, aralkylthio or acylthio, useful in peptide synthesis.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: November 18, 1986
    Assignee: Research Corporation
    Inventors: Louis A. Carpino, Beri Cohen
  • Patent number: 4620055
    Abstract: The present invention provides a novel process for the preparation of styrene, stilbene, and/or substituted derivatives thereof. The process involves the reaction of an aryl sulfonyl chloride with an olefinic compound in the presence of a catalytic amount of a metal catalyst consisting essentially of palladium.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: October 28, 1986
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Patent number: 4619974
    Abstract: Perfluoroalkyl alkylene substituted polydienes are described which are obtained by addition of perfluoroalkyl-alkylene thiols to polydienes and which are useful as hard, oil- and water repellent coatings on metal, paper, wood, glass ceramics, textiles or leather.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: October 28, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Karl F. Mueller
  • Patent number: 4618519
    Abstract: A repaired elastomer article having a cut or crack entirely therethrough. An interior cavity is located in the vicinity of the cut or crack and has a filler therein. A treating agent is located about the cut portion on the inner surface of the article and an amine curable polymer or prepolymer resides over said treating agent. A cured elastomeric patch resides over said amine curable polymer or prepolymer. Since the amine curable polymer or prepolymer cures at ambient temperatures, the repair of the elastomer article can occur in situ. The invention is especially useful in the repair of tires.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: October 21, 1986
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Russell W. Koch, Douglas D. Snyder
  • Patent number: 4612131
    Abstract: Compounds of formula I ##STR1## where R.sub.1 and R.sub.2 independently are alpha-branched alkyl of 3 to 8 carbon atoms, R.sub.3 is hydrogen, R.sub.4 is ethylene, 1,3-propylene or 1,4-butylene, and n is 2 or 4 are effective stabilizers for protecting elastomeric or acrylonitrile copolymer compositions or lubricating oil compositions against thermal oxidation and discoloration. 2-Mercaptoethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate is particularly useful.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: September 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Siegfried Rosenberger
  • Patent number: 4612344
    Abstract: When exposed to an open flame, the resultant polymer melt of a reinforced, flame-proofed thermoplastic polyester can be effectively prevented from dripping by the addition of xonotlite.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: September 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Franz Breitenfellner
  • Patent number: 4612356
    Abstract: Homo and co polymers of di-perfluoroalkyl containing acrylate and methacrylate monomer derivatives of the formula: ##STR1## where R.sub.f is perfluoroalkyl, omega-hydroperfluoroalkyl, or perfluoroalkoxy substituted perfluoroalkyl;R.sub.1 is alkylene of up to 12 carbon atoms;X is --S-- or --SO.sub.2 --;Alk is alkanetriyl having from 1 to 12 carbon atoms;.phi. is phenylene which is unsubstituted or substituted by chlorine, bromine, alkyl of 1 to 6 carbon atoms or alkoxy of 1 to 6 carbon atoms;n is 0 or 1;R.sub.2 is alkylene of up to 12 carbon atoms; andR.sub.3 is hydrogen or methyl; their preparation and use as hydrophobic and oleophobic finishes are disclosed.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: September 16, 1986
    Assignee: Ciba-Geigy Corporation
    Inventor: Robert A. Falk
  • Patent number: 4609708
    Abstract: There are provided polymeric pyrrolidinium methanesulfonate viscosifiers which are useful in chemical waterflooding and in drilling fluids. These compounds may be formed by an unexpected cyclization reaction of quaternary diallyl amino groups on polymeric backbones involving the reaction of such groups with bisulfite salts.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: September 2, 1986
    Assignee: Mobil Oil Corporation
    Inventor: Kirk D. Schmitt
  • Patent number: 4608415
    Abstract: A coating material containing a modified chlorinated resin which produces by the modifying step chlorinated resins containing less than 50% chlorine by weight with the medium of the resin modified by fatty acids so that it is adapted to be used as a coating material, printing ink, adhesive, and the like, especially suitable for polyolefin plastics and said coating material enabling manufacture of an excellent coating for weather resistance, adhesion, stability and in other coating performances.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: August 26, 1986
    Assignee: Asahipen Corporation
    Inventors: Jun Nakajima, Shiceki Morinaga
  • Patent number: 4607076
    Abstract: A water soluble copolymer having the structure: ##STR1## wherein X is about 1 to about 99 mole percent and y is about 99 to about 1 mole percent.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: August 19, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Donald N. Schulz, Kissho Kitano
  • Patent number: 4606864
    Abstract: A monomer having the formula: ##STR1## wherein: R.sup.1 is H or methyl;R.sup.2, R.sup.3 and R.sup.4 are independently alkyl, aryl, or aralkyl; andR.sup.5 and R.sup.6 are independently H, halo, alkyl, aryl, aralkyl, thioalkyl, thioaryl, or thioaralkyl,is useful in preparing a polymer having a high refractive index. The polymer is useful in forming optical components, such as lenses.
    Type: Grant
    Filed: February 1, 1985
    Date of Patent: August 19, 1986
    Assignee: Eastman Kodak Company
    Inventor: David P. Warren
  • Patent number: 4606970
    Abstract: Disclosed is a composite laminated film suitable for use in constructing trash and other bags, in which at least one layer of a non-woven fabric material of a density in the range of 0.125 oz. to 1.5 oz. per square yard is secured to at least one layer of a plastic film. A method of continuous manufacturing of the laminate film is also disclosed.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: August 19, 1986
    Assignee: Mobil Oil Corporation
    Inventor: Gordon V. Sharps, Jr.