Patents Examined by Christopher A. Henderson
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Patent number: 6077912Abstract: 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: GrantFiled: December 4, 1997Date of Patent: June 20, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Richard Michael D'Sidocky, David John Zanzig, Shingo Futamura
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Patent number: 5534599Abstract: 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: GrantFiled: March 10, 1995Date of Patent: July 9, 1996Assignee: The Goodyear Tire & Rubber CompanyInventors: Paul H. Sandstrom, David J. Zanzig, Mark S. Sinsky
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Patent number: 4857589Abstract: 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: GrantFiled: July 15, 1987Date of Patent: August 15, 1989Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Shinji Okamoto, Masaaki Minakawa, Youiti Neki, Masasi Nakagiri
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Patent number: 4803260Abstract: 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: GrantFiled: January 29, 1986Date of Patent: February 7, 1989Assignee: Nippon Zeon Co., Ltd.Inventors: Masaaki Nishina, Junsei Kawahuti
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Patent number: 4680380Abstract: 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: GrantFiled: January 19, 1983Date of Patent: July 14, 1987Assignee: The B. F. Goodrich CompanyInventors: George M. Benedikt, Dennis A. Barnes
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Patent number: 4663467Abstract: 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: GrantFiled: March 5, 1984Date of Patent: May 5, 1987Assignee: The Dow Chemical CompanyInventors: William J. Kruper, Jr., David V. Dellar
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Patent number: 4624873Abstract: 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: GrantFiled: November 21, 1985Date of Patent: November 25, 1986Assignee: Teepak, Inc.Inventors: Hugo De Jong, Hugo Thijs
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Patent number: 4623586Abstract: 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: GrantFiled: November 18, 1985Date of Patent: November 18, 1986Assignee: Central Glass Company, LimitedInventors: Kaoru Umeya, Michiharu Mishima, Yoshihiro Sugata
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Patent number: 4623484Abstract: 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: GrantFiled: December 5, 1985Date of Patent: November 18, 1986Assignee: Research CorporationInventors: Louis A. Carpino, Beri Cohen
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Patent number: 4620055Abstract: 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: GrantFiled: October 7, 1985Date of Patent: October 28, 1986Assignee: Eastman Kodak CompanyInventors: Carl M. Lentz, James R. Overton, David D. Cornell
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Patent number: 4619974Abstract: 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: GrantFiled: December 17, 1984Date of Patent: October 28, 1986Assignee: Ciba-Geigy CorporationInventor: Karl F. Mueller
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Patent number: 4618519Abstract: 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: GrantFiled: April 1, 1985Date of Patent: October 21, 1986Assignee: The Firestone Tire & Rubber CompanyInventors: Russell W. Koch, Douglas D. Snyder
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Patent number: 4612131Abstract: 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: GrantFiled: March 21, 1985Date of Patent: September 16, 1986Assignee: Ciba-Geigy CorporationInventor: Siegfried Rosenberger
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Patent number: 4612344Abstract: 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: GrantFiled: February 25, 1985Date of Patent: September 16, 1986Assignee: Ciba-Geigy CorporationInventor: Franz Breitenfellner
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Patent number: 4612356Abstract: 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: GrantFiled: March 11, 1985Date of Patent: September 16, 1986Assignee: Ciba-Geigy CorporationInventor: Robert A. Falk
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Patent number: 4609708Abstract: 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: GrantFiled: January 28, 1985Date of Patent: September 2, 1986Assignee: Mobil Oil CorporationInventor: Kirk D. Schmitt
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Patent number: 4608415Abstract: 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: GrantFiled: March 14, 1983Date of Patent: August 26, 1986Assignee: Asahipen CorporationInventors: Jun Nakajima, Shiceki Morinaga
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Patent number: 4607076Abstract: 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: GrantFiled: January 2, 1985Date of Patent: August 19, 1986Assignee: Exxon Research and Engineering Co.Inventors: Donald N. Schulz, Kissho Kitano
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Patent number: 4606864Abstract: 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: GrantFiled: February 1, 1985Date of Patent: August 19, 1986Assignee: Eastman Kodak CompanyInventor: David P. Warren
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Patent number: 4606970Abstract: 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: GrantFiled: December 19, 1983Date of Patent: August 19, 1986Assignee: Mobil Oil CorporationInventor: Gordon V. Sharps, Jr.