Composition For Puncture Proof Tire Liner Or In Emergency Tire Repair (e.g., Tire Inflation, Etc.) Or Process Of Preparing Patents (Class 523/166)
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Patent number: 6864305Abstract: A puncture sealing agent for a tire is at least comprising a rubber latex, an adhesive agent, and an antifreezing agent, wherein propylene glycol is used as the antifreezing agent, and further the ratio of the propylene-glycol to the total weight of the puncture sealing agent is set from 20 to 40% by weight.Type: GrantFiled: September 10, 2002Date of Patent: March 8, 2005Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Masahiro Kishida, Yoshihide Kojima, Kohei Takemura, Akihiko Hamada, Naoya Ichikawa
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Patent number: 6837287Abstract: This invention relates to a pneumatic tire with puncture sealing property and a method for preparing such tire. Such tire is prepared by building an uncured butyl rubber-based layer, which contains a peroxide and a dispersion therein of a particulate precured rubber selected from pre resin-cured butyl rubber and/or pre sulfur-cured diene-based elastomer, into an uncured tire and between an innerliner layer and the tire carcass. Upon curing the prepared tire under conditions of elevated temperature, a major portion of the uncured butyl rubber composition is depolymerized to form a tacky material, which contains said dispersion therein of said particulate precured rubber, which has puncture sealant properties. Such layer of depolymerized butyl rubber and dispersed precured rubber particles may be collectively referred to as the sealant layer.Type: GrantFiled: June 13, 2002Date of Patent: January 4, 2005Assignee: The Goodyear Tire & Rubber CompanyInventors: David Michael Smith, Sr., Bina Patel Botts, John Richard White, Ronald James Dill, John Kotanides, Jr., Michael Brendan Rodgers
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Publication number: 20040206438Abstract: A pneumatic tire is disclosed, which comprises a bubble-containing adhesive composition layer as a puncture prevention layer or a puncture prevention layer formed by covering at least one surface of a sheet-like foamed body with a nonporous adhesive composition layer, disposed in the inner surface of a tire main body. This pneumatic tire having the puncture prevention layer in the tire inner surface is adapted to reduce the weight of the tire.Type: ApplicationFiled: May 10, 2004Publication date: October 21, 2004Inventors: Hidekazu Takeyama, Hidekazu Onoi, Akio Ogata
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Publication number: 20040194862Abstract: Disclosed are a pneumatic tire, which exhibits excellent puncture-preventing function while avoiding inconvenience aroused when a sealant layer is formed based on decomposition reaction of polyisobutylene, a process for producing the same and a sealant rubber composition. This pneumatic tire is provided with the sealant layer in a region of the inner surface of the tire which corresponds at least to a tread. The sealant layer is made of an adhesive sealant obtained by heating a rubber composition containing 0.2 to 20 parts by weight of peroxide per 100 parts by weight of a rubber ingredient containing not less than 50 wt. % of polyisobutylene. 5 to 50 parts by weight of a liquid ethylene/&agr;-olefin copolymer, liquid polybutadiene or liquid polyisoprene are added as an adhesive of the sealant layer.Type: ApplicationFiled: March 3, 2004Publication date: October 7, 2004Inventors: Takashi Fukutomi, Takumi Sekiguchi, Issei Nakakita, Mitsuru Naito, Yuichi Kobayashi, Koji Watanabe, Tetsuo Ikegami, Satoshi Makino, Naoya Miyawaki, Tetsuya Mizone
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Publication number: 20040173297Abstract: A pneumatic tire having a puncture-preventive sealant layer that suppresses the generation of decomposition gas and is high in viscosity; and a method of producing the same. This pneumatic tire has a sealant layer disposed along the inner surface thereof, in which sealant layer is made of a rubber composition containing a cobalt salt in an amount of 0.07-0.5 parts by weight in terms of cobalt component for 100 parts by weight of rubber containing not less than 80 parts by weight of natural rubber or isoprene rubber.Type: ApplicationFiled: December 12, 2003Publication date: September 9, 2004Inventors: Takashi Fukutomi, Sadafumi Aibe
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Publication number: 20040159386Abstract: This invention relates to a pneumatic tire having a built-in sealant layer and its preparation. The sealant layer precursor is a layer of a butyl rubber based composition which contains an organoperoxide. The butyl rubber of said precursor is a copolymer of isobutylene and isoprene containing from about 0.5 to about 5, alternately less than 1, mole percent isoprene. The precursor composition contains carbon black and/or coal dust and may contain a dispersion of liquid conjugated diene polymer (e.g. liquid cis 1,4-polyisoprene polymer), short fibers and/or hollow glass microspheres. A layer of the sealant precursor is built into the tire between a sulfur vulcanized halobutyl rubber innerliner and conjugated diene-based rubber of the tire carcass. The butyl rubber of the sealant precursor is partially depolymerized by the organoperoxide during the elevated temperature vulcanization of the tire to form the built-in sealant layer.Type: ApplicationFiled: February 17, 2003Publication date: August 19, 2004Inventors: Susan Lynn Deevers, Raymond Robert DiRossi, George Frank Balogh, Brian David Holden, Leonard James Reiter
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Publication number: 20040112506Abstract: A method of treating a pneumatic tire, which comprises introducing a repair agent for a punctured tire comprising a latex into the inside of a punctured tire with a rim, followed by sealing, and then introducing a polymer coagulating agent into the inside of the punctured tire to coagulate the repair agent.Type: ApplicationFiled: October 3, 2003Publication date: June 17, 2004Inventors: Mitsuru Naito, Eiji Kawakita, Kenji Takeichi
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Publication number: 20040068033Abstract: A tire sealer and inflator provides utilization of R-134a propellant combined with a sealant composition. In a described example, a tire sealer and inflator includes R-134a propellant, and a sealant composition consisting essentially of, by weight, water approximately 77%, acrylic resin emulsion approximately 22%, sodium nitrite approximately 0.75%, oleic acid approximately 0.01%, and ammonium hydroxide approximately 0.01%.Type: ApplicationFiled: October 7, 2002Publication date: April 8, 2004Inventors: N. Howard Dudley, Michael L. Schwartz, Richard L. Miller
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Publication number: 20040010059Abstract: A device and a method for making a tire puncture sealant having a higher concentration of propylene glycol are disclosed, wherein the device comprises: a container having a cylindrical space for a mixed solution of rubber latex and a tackifier; a squirter comprising at least one spout for pouring propylene glycol on the surface of the mixed solution in the container at a rate of 0.01 to 1.0 liter/minute per spout; and an agitator for the mixed solution in the container, comprising a stirring blade rotatable in the mixed solution to cause said surface a current speed of the mixed solution in a range between about 1.0 and about 10.0 meter/second during pouring the propylene glycol.Type: ApplicationFiled: May 29, 2003Publication date: January 15, 2004Inventors: Yoshihide Kojima, Masahiro Kishida
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Publication number: 20030230376Abstract: This invention relates to a pneumatic tire with puncture sealing property and a method for preparing such tire. Such tire is prepared by building an uncured butyl rubber-based layer, which contains a peroxide and a dispersion therein of a particulate precured rubber selected from pre resin-cured butyl rubber and/or pre sulfur-cured diene-based elastomer, into an uncured tire and between an innerliner layer and the tire carcass. Upon curing the prepared tire under conditions of elevated temperature, a major portion of the uncured butyl rubber composition is depolymerized to form a tacky material, which contains said dispersion therein of said particulate precured rubber, which has puncture sealant properties. Such layer of depolymerized butyl rubber and dispersed precured rubber particles may be collectively referred to as the sealant layer.Type: ApplicationFiled: June 13, 2002Publication date: December 18, 2003Inventors: David Michael Smith, Bina Patel Botts, John Richard White, Ronald James Dill, John Kotanides, Michael Brendan Rodgers
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Patent number: 6605654Abstract: A new composition, method, and apparatus for sealing and inflating a flat tire are described. The new composition includes a gas-generating agent and an activator, along with a sealant. In use, a gas propellant is generated in situ when the gas-generating agent is mixed with the activator. For example, carbon dioxide is generated when carbonates, such as baking soda, and an acid are mixed. The carbon dioxide gas generated in this manner can inflate a flat tire to a desired pressure. In addition to carbon dioxide, nitrogen gas, noble gases, and nitrous oxide gas may also be used instead.Type: GrantFiled: July 14, 2000Date of Patent: August 12, 2003Assignee: Pennzoil-Quaker State CompanyInventors: Jiafu Fang, Dewey P. Szemenyei, Troy H. Scriven
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Publication number: 20030136490Abstract: The present invention provides a compound, system, and method for retrofitting and converting standard bicycle rims and tires having tubes to be tubeless. Standard tube tires are retrofitted by installing either rim tape or a rim strip with integral valve stem around the inner channel of the rim, mounting the first bead of the tire, injecting a liquid sealing compound into the tire cavity, finishing mounting the tire, inflating, and installing the tire on a bicycle. The sealing compound may additionally contain propylene glycol or an aggregate material to encourage the sealing of the tires as punctures occur when the tire system is placed into use.Type: ApplicationFiled: January 22, 2002Publication date: July 24, 2003Inventor: Stanley Koziatek
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Publication number: 20030050365Abstract: A puncture sealing agent for a tire is at least comprising a rubber latex, an adhesive agent, and an antifreezing agent, wherein propylene glycol is used as the antifreezing agent, and further the ratio of the propylene-glycol to the total weight of the puncture sealing agent is set from 20 to 40% by weight.Type: ApplicationFiled: September 10, 2002Publication date: March 13, 2003Inventors: Masahiro Kishida, Yoshihide Kojima, Kohei Takemura, Akihiko Hamada, Naoya Ichikawa
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Patent number: 6492436Abstract: A tire sealer and inflating composition and products made therefrom are described. The tire sealer and inflating composition includes a sealant, a non-flammable propellant with an ozone depletion potential of zero or substantially close to zero, and one or more aromatic hydrocarbons capable of lowering the vapor pressure of the non-flammable propellant. Moreover, the tire sealer and inflating composition has a vapor pressure less than about 180 psig at 130° F. A preferred propellant is 1,1,1,2-tetrafluoroethane, although other fluorocarbons can also be used. A preferred aromatic hydrocarbon is AROMATIC 150, which is a mixture of aromatic compounds. The tire sealer and inflating composition can either be aqueous or non-aqueous. The disclosed tire sealer and inflating composition is capable of inflating a flat tire or other inflatable objects and seal a puncture wound.Type: GrantFiled: June 19, 2001Date of Patent: December 10, 2002Assignee: Pennzoil-Quaker State CompanyInventors: Michael W. Howe, John W. Amszi, Roderic G. Mathews
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Patent number: 6454892Abstract: A tire puncture sealing preparation is directed to sealing in wet conditions, at low and high temperatures and with defects at the transition between the tread and the side wall of the tire. The sealing preparation contains natural rubber latex or a combination of rubber latex and compatible adhesive resin. Furthermore, various embodiments are directed to introducing the sealing preparation into the tire and for the pumping up thereof. An air compressor, or liquefied dinitrogenoxide, or sulphur hexafluoride are preferably used as a pressure source with these devices.Type: GrantFiled: July 9, 1996Date of Patent: September 24, 2002Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Manfred Gerresheim, Hans-Bernd Fuchs, Ulrich Steinbrecht, Norbert Stransky, Eduard Ditzel, Helmut Wolf
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Patent number: 6344499Abstract: A puncture sealing agent for sealing an inner surface of a tire comprises a deproteinized rubber latex that is formed by removing protein from a natural rubber latex. The puncture sealing agent includes nitrogen content at 0.1 wt. % or less of rubber solid content of the deproteinized rubber latex, and ammonia content at 0.5 wt. % or less of the rubber solid content.Type: GrantFiled: February 2, 2000Date of Patent: February 5, 2002Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kazuhiko Kawamura, Tamisuke Kimura, Akihiko Hamada, Yoshiaki Miyamoto, Maiko Okada
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Patent number: 6264732Abstract: A puncture preventive sealant capable of reducing the content of cellulose fibers for suppressing the cost of the sealant while keeping a high sealing performance due to the cellulose fibers. A sealant, which is filled in a sealant chamber defined in a tube adjacently to an air chamber, contains synthetic fibers and cellulose fibers in a solvent. The content of the synthetic fibers is in a range of from 75 to 90 wt % and the content of the cellulose fiber is in a range of from 25 to 10 wt %. Since the sealant is filled in the sealant chamber having a capacity significantly smaller than that of the air chamber, the separation of the synthetic fibers due to a centrifugal force substantially exert no adverse effect on the characteristics of the sealant. Accordingly, the content of the cellulose fibers can be set at such a minimum value so as to block a large puncture hole. As a result, it is possible to reduce the cost by reducing the content of the cellulose fibers.Type: GrantFiled: July 11, 2000Date of Patent: July 24, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Akiko Tanaka, Toshio Yamagiwa
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Patent number: 6194485Abstract: Rubber curing agents such as quinoids are compounded to achieve a uniform or homogeneous distribution thereof in a rubber composition. The quinoid curing agents are initially solubilized in an organic polar solvent and then mixed with the rubber or rubber masterbatch. The organic polar solvent is then removed. A uniform fine distribution of the curing agent results in improved physical properties. The process is an improvement in that it does not require the rubber masterbatch be dissolved in a nonpolar solvent. The present invention is particularly suitable as a sealant composition for tires.Type: GrantFiled: April 1, 1999Date of Patent: February 27, 2001Assignee: Bridgestone CorporationInventors: Terrence E. Hogan, Xiaorong Wang, William L. Hergenrother, Georg G. A. Bohm
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Patent number: 6087016Abstract: Barrier coating mixtures contain in a carrier liquid, (a) an elastomeric (preferably butyl-containing) polymer; (b) a dispersed exfoliated layered filler having an aspect ratio greater than 25; and (c) at least one surfactant, wherein the solids content of the mixture is less than 30% and the ratio of polymer (a) to filler (b) is between 20:1 and 1:1. Coated articles, which are rigid or flexible and elastomeric, and free-standing films and membranes, which are flexible and elastomeric, are produced using the barrier coating mixtures.Type: GrantFiled: June 8, 1998Date of Patent: July 11, 2000Assignees: InMat, LLC, Michelin Recherche et Technique S.A.Inventors: Carrie A. Feeney, Michele Farrell, Klaus Tannert, Harris A. Goldberg, Mengshi Lu, Michael D. Grah, William G. Steiner, Paul B. Winston
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Patent number: 6063837Abstract: A puncture sealing agent for sealing an inner surface of a tire comprises a deproteinized rubber latex that is formed by removing protein from a natural rubber latex. The puncture sealing agent includes nitrogen content at 0.1 wt. % or less of rubber solid content of the deproteinized rubber latex, and ammonia content at 0.5 wt. % or less of the rubber solid content.Type: GrantFiled: November 25, 1997Date of Patent: May 16, 2000Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kazuhiko Kawamura, Tamisuke Kimura, Akihiko Hamada, Yoshiaki Miyamoto, Maiko Okada
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Patent number: 6013697Abstract: A tire sealant mixture contains water, mica flakes, hydrated bentonite clay, and a water-miscible carrying agent such as propylene glycol. This sealant mixture is capable of sealing a puncture caused by a 3mm diameter nail without significant pressure loss when the mixture is deployed inside the tire as a prophylactic measure against flat tires.Type: GrantFiled: December 3, 1996Date of Patent: January 11, 2000Assignee: Glaser-True Bike Route, Ltd.Inventors: Glen C. True, Terry J. Glaser
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Patent number: 5969006Abstract: The present invention relates to improved methods of sealing openings in a well bore penetrating a subterranean zone into which fluids contained in the well bore are lost or from which fluids undesirably flow into the well bore. The methods basically comprise the steps of preparing a hardenable epoxy sealing composition comprising an epoxide containing liquid and a hardening agent, placing the epoxy sealing composition by way of the well bore into the openings and into the subterranean zone and allowing the epoxy composition to harden whereby the well bore is sealed.Type: GrantFiled: February 20, 1998Date of Patent: October 19, 1999Assignee: Halliburton Energy Services, Inc.Inventors: David D. Onan, Jiten Chatterji, Bobby J. King, Roger S. Cromwell, Patty L. Onan
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Patent number: 5916931Abstract: An aerosol propellant for sealing punctures in tires comprises a methylene chloride-in-water emulsion comprising water, methylene chloride, a curable acrylonitrile-butadiene-styrene (ABS) polymer latex and a surfactant, the emulsion having been blended with a fibrous plugging/matting agent, a carbon dioxide containing propellant or propellant blend in an amount sufficient to at least partially inflate a tire, and a corrosion inhibitor. The tire inflator/sealer provides an ozone friendly product.Type: GrantFiled: August 25, 1997Date of Patent: June 29, 1999Assignee: Engine Fog Inc.Inventors: Lawrence J. Adams, Paul D. Hughett
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Patent number: 5895798Abstract: A liquid rubber composition including a 1,2-polybutadiene resin component dispersed in the form of fine particles in a liquid rubber component in a weight ratio of 1:100 to 50:100 has a high dispersion stability and a low specific gravity and is useful for forming a cured rubber article having a high elastic modulus and a satisfactory mechanical strength and ultimate elongation.Type: GrantFiled: October 6, 1997Date of Patent: April 20, 1999Assignee: Ube Industries, Ltd.Inventors: Naomi Okamoto, Takeshi Shoda
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Patent number: 5856376Abstract: A tire puncture sealant containing water in an amount of from about 6% to about 64% by weight; ethylene glycol in an amount of from about 36% to about 94%; styrene butadiene latex in an amount of about 3%; polyethylene powder and ground rubber in an amount from about 3% to about 6%; a minor effective amounts of an alkali metal carbonate, a cellulosic thickener, an alkali metal nitrite and a corrosion inhibitor. The polyethylene powder and ground rubber are preferably surface-activated and include various particle sizes.Type: GrantFiled: March 3, 1997Date of Patent: January 5, 1999Assignee: NCH CorporationInventor: Daniel W. Wong
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Patent number: 5834534Abstract: An aerosol propellant comprises a methylene-chloride-in-water water/out emulsion comprising water, methylene chloride and a surfactant and a propellant gas soluble in methylene chloride. A puncture sealing and inflating composition for pneumatic tires includes a methylene-chloride-in-water water/out emulsion comprising water, methylene chloride, and a surfactant; a nonflammable propellant gas soluble in methylene chloride; a curable latex emulsion; and a fibrous plugging/matting agent.Type: GrantFiled: November 4, 1996Date of Patent: November 10, 1998Assignee: Engine Fog Inc.Inventors: Lawrence J. Adams, Paul D. Hughett
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Patent number: 5772747Abstract: A sealant composition especially useful for stopping punctures in vehicle tires includes: (a) a viscous fluid such as propylene glycol or polypropylene glycol; (b) one or more fibrous materials such as cellulose, wool, nylon, rayon, hair, wollastonite, rock-wool, glass wool fibers, polyester, polypropylene, or other material of like nature; and (c) flat plate-like particles, such as mica. In one embodiment, the composition is too viscous to be readily passed through a pneumatic tire valve stem, so the viscous product is installed into the tire while the tire is dismounted from the wheel. In another embodiment, the composition is made of two parts, each of which is sufficiently low in viscosity to pass readily through the valve stem, but which react on mixing inside the tire form a liquid of higher viscosity.Type: GrantFiled: November 12, 1996Date of Patent: June 30, 1998Assignee: Peter ChunInventors: Ronald L. Turner, John A. Elverum
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Patent number: 5705604Abstract: This invention relates to novel tire sealer and inflator compositions. The compositions may be aqueous or non-aqueous and comprise a petroleum residual resin sealant, an amorphous polyolefin, an organic solvent, a vapor pressure depressant, and a non-flammable propellant/inflator having an ozone depletion potential of zero. For the aqueous system, the composition further comprises an emulsifier. The compositions are useful for sealing and inflating a punctured tire in combination with a propellant/inflator.Type: GrantFiled: June 28, 1996Date of Patent: January 6, 1998Assignee: Pennzoil Products CompanyInventor: Jiafu Fang
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Patent number: 5665183Abstract: A tire inner-liner, comprising a solid rubber and a complex, said complex comprising a reactive rubber and a layered silicate clay uniformly dispersed therein. The complex comprising the clays significantly improve the low air permeability of the tire inner-liner without adversely affecting the rubber composition.Type: GrantFiled: June 7, 1995Date of Patent: September 9, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Edward Nathan Kresge, David John Lohse
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Patent number: 5648406Abstract: A tire sealant and inflator composition for the repair of puncture wounds in pneumatic tires and the like. The composition utilizes a sealing component consisting of an acrylic resin dissolved in a suitable solvent and a hydrochlorofluorocarbon and/or hydrofluorocarbon propellant component to deliver the sealing component from an aerosol container into the tire to a driveable state.Type: GrantFiled: August 15, 1994Date of Patent: July 15, 1997Assignee: Specialty Chemical Resources, Inc.Inventors: Phil Peelor, John Moran, Lloyd T. Flanner
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Patent number: 5618912Abstract: This invention relates to novel tire sealer and inflator compositions. The compositions may be aqueous or non-aqueous and comprise a petroleum residual resin sealant, an amorphous polyolefin, an organic solvent, a vapor pressure depressant, and a non-flammable propellant/inflator having an ozone depletion potential of zero. For the aqueous system, the composition further comprises an emulsifier. The compositions are useful for sealing and inflating a punctured tire in combination with a propellant/inflator.Type: GrantFiled: May 4, 1995Date of Patent: April 8, 1997Assignee: Pennzoil Products CompanyInventor: Jiafu Fang
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Patent number: 5540767Abstract: A tire gel balancing composition having a Storage modulus of between 3000 and 15000 Pa and the Specific Gravity less than 1000 kg/m.sup.3 in the temperature range between -20.degree. and +90.degree. C., preferably its Storage modulus is about 9000 Pa, is capable of balancing tires by being able to flow under the vibrations caused by imbalance in a wheel assembly. The composition preferably comprises a mixture of: 1) paraffinic oils, polybutene oils, polyol esters or polyol ethers; 2) hydrophobic or hydrophilic fumed silica; 3) poly-alkyl-methacrylates, styrene-ethylene-propylene block copolymers or polyhydroxycarboxyl acid derivatives; and optionally corrosion inhibitors and antioxidants.Type: GrantFiled: July 10, 1995Date of Patent: July 30, 1996Assignee: Lars BertilInventor: Alvin Ronlan
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Patent number: 5500456Abstract: A new tire sealant and inflator composition is described which utilizes a sealant having superior performance, presented in a water-based carrier, and with an inflator composition consisting of mainly dimethyl ether, modified by trichloroethylene and nitrogen gas. The composition comprises a terpolymeric latex sealant emulsion, prevented from coagulating or vulcanizing in the dispenser by the addition of additives, and made more potent by the inclusion of certain wood flours having selected particle size distributions. Other ingredients, such as propylene glycol, a surfactant, triethanolamine and ammonia, confer special attributes; for example, softening the wood flour particles and keeping them dispersed in the aerosol can, while causing them to pack down into a sealing matrix once added to a tire having a puncture.Type: GrantFiled: January 26, 1994Date of Patent: March 19, 1996Assignee: Snap Products, Inc.Inventors: Paul D. Hughett, Montfort A. Johnsen
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Patent number: 5338776Abstract: A tire sealant and inflator composition for the repair of puncture wounds in pneumatic tires and the like. The composition utilizes a sealing component consisting of an acrylic resin dissolved in a suitable solvent and a hydrochlorofluorocarbon and/or hydrofluorocarbon propellant component to deliver the sealing component from an aerosol container into the tire to a driveable state.Type: GrantFiled: November 10, 1993Date of Patent: August 16, 1994Assignee: Aerosol Systems, Inc.Inventors: Philip L. Peelor, John J. Moran, Lloyd T. Flanner
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Patent number: 5128392Abstract: The present invention relates to filled elastomers which can be cured at low temperatures utilizing a quinoid/peroxide curing system in the presence of a select polar solvent accelerator. The select solvent accelerators which are utilized have the dual function of acting as both dispersing agents and curing accelerators. The instant invention herein includes the instant curing system, its use in a tire sealant composition, the puncture-sealing layer formed of the cured composition and the puncture-sealing tire.Type: GrantFiled: August 15, 1988Date of Patent: July 7, 1992Assignee: Bridgestone/Firestone, Inc.Inventors: Mario N. DeTrano, William L. Hergenrother, Donald B. Diehl
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Patent number: 5059636Abstract: A non-petroleum based, environmentally safe tire sealant composition is prepared. The major ingredients in same are finely ground rubber, calcium chloride, all-purpose wheat flour and water. To these major ingredients are added a relatively small amount of sodium nitrite, and substantially smaller amounts of a vegetable oil and a de-foaming agent.Type: GrantFiled: November 13, 1990Date of Patent: October 22, 1991Inventor: Paul A. Grenga
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Patent number: 4895610Abstract: This invention relates to a pneumatic tire with puncture sealing properties and a method for manufacturing such a tire. In this method of manufacturing such a self-sealing pneumatic rubber tire a polymer composition layer is built into the tire in a relatively conventional manner. Under the conditions of heat and pressure used to cure the tire this polymer composition is both crosslinked and depolymerized to form a tacky material which has puncture sealant properties (the sealant layer). Ordinary tire manufacturing techniques can be employed since the sealant layer has the physical properties of ordinary butyl rubber used in tire building at the time it is assembled into the tire.Type: GrantFiled: June 3, 1988Date of Patent: January 23, 1990Assignee: The Goodyear Tire & Rubber CompanyInventor: William E. Egan
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Patent number: 4743497Abstract: A composition useful in sealing punctured tires that includes asphalt, alkadiene-vinylarene copolymer, hydrocarbon resin and other materials. The composition is simple to install and lightweight.Type: GrantFiled: September 30, 1986Date of Patent: May 10, 1988Assignee: Phillips Petroleum CompanyInventor: Agmund K. Thorsrud
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Patent number: 4665963Abstract: There is provided a tubeless pneumatic tire with an inner liner having puncture sealing characteristics comprising as the inner liner a puncture sealing laminate having an outer halobutyl polymer containing layer and an inner polymer containing layer, the inner layer of the laminate having been reacted with a zinc peroxide compound.Type: GrantFiled: October 19, 1984Date of Patent: May 19, 1987Assignee: Polysar LimitedInventors: John Timar, Sheikh A. H. Mohammed, John Walker
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Patent number: 4616048Abstract: Rubber curing agents such as quinoids are solution compounded to achieve a uniform or homogeneous distribution thereof in a rubber composition. The curing agents are initially solubilized in an organic polar solvent and then mixed with the rubber masterbatch solution. The solvent is then removed. A uniform fine distribution of the curing agent results in improved physical properties. The present invention is particularly suitable as a sealant composition for tires.Type: GrantFiled: April 29, 1985Date of Patent: October 7, 1986Assignee: The Firestone Tire & Rubber CompanyInventors: Mario N. De Trano, William L. Hergenrother, Ralph A. Maglio, David M. Roggeman
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Patent number: 4607065Abstract: A sealant composition for the puncture-sealing tire and a method of producing the same are disclosed. This sealant composition is crosslinking-reaction type and comprises (A) at least one rubber, (B) a tackifier, (C) an acryloyl or methacryloyl group-containing polymerizable unsaturated compound, (D) a filler and (E) a photopolymerization initiator. In the production of the sealant composition, the component (A) is first reacted with the component (C) and then kneaded with the components (B), (D) and (E).Type: GrantFiled: May 15, 1985Date of Patent: August 19, 1986Assignee: Bridgestone Tire Company LimitedInventors: Takashi Kitamura, Yukio Fukuura, Itsuo Tanuma, Toshikazu Shinogaya, Yuji Noda
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Patent number: 4588758Abstract: A tire sealant composition for injection into pneumatic tires is provided. The tire sealant composition promotes heat transfer in a rolling tire, thereby keeping the tire somewhat cooler; it assists in balancing the wheel and tire, thereby prolonging the life of the tire and precluding unnecessary unevenness of wear of the tire; and the tire sealant composition serves to seal the tire around the wheel rim and particularly in the tread area of the tire against punctures. The composition includes a thickener and binding agent, asbestos fibers, ethylene glycol, hydrocarbon process oil, a detergent as a wetting agent and emulsifier, sodium bicarbonate, and water.Type: GrantFiled: March 13, 1985Date of Patent: May 13, 1986Inventor: Lawrence E. Jaspon
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Patent number: 4548687Abstract: A sealant composition for the puncture-sealing tire and a method of producing the same are disclosed. This sealant composition is crosslinking-reaction type and comprises (A) at least one rubber, (B) a tackifier, (C) an acryloyl or methacryloyl group-containing polymerizable unsaturated compound, (D) a filler and (E) a photopolymerization initiator. In the production of the sealant composition, the component (A) is first reacted with the component (C) and then kneaded with the components (B), (D) and (E).Type: GrantFiled: April 29, 1983Date of Patent: October 22, 1985Assignee: Bridgestone Tire Company LimitedInventors: Takashi Kitamura, Yukio Fukuura, Itsuo Tanuma, Toshikazu Shinogaya, Yuji Noda
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Patent number: 4539344Abstract: A sealant composition particularly suitable for vehicle tires comprising a cured butyl rubber present only in the form of a copolymer having a molecular weight in excess of 100,000 and one or more tackifiers, the tensile strength, elongation and cross-link density of the composition being adjusted to produce the necessary properties for tire sealants.Type: GrantFiled: April 14, 1982Date of Patent: September 3, 1985Assignee: Rockcor, Inc.Inventors: Joel V. Van Ornum, Jessie T. Chiu
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Patent number: 4528331Abstract: A conventional sealant composition having as its essential rubber components (1) at least one high molecular weight, hydrogenated polybutadiene polymer, and (2) at least one low molecular weight liquid elastomer, i.e., polybutene, as tackifying polymer, compatible to a high degree with said hydrogenated polymer; the resultant sealant composition reflecting a co-continuous phase morphology wherein said hydrogenated polymer provides a crosslinked network in said compatible low molecular weight liquid elastomer.Type: GrantFiled: April 26, 1984Date of Patent: July 9, 1985Assignee: The Firestone Tire & Rubber CompanyInventors: Georg G. A. Bohm, Mario DeTrano, James E. Hall
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Patent number: 4445562Abstract: A conventional sealant composition having as its essential rubber components (1) at least one high molecular weight, hydrogenated polybutadiene polymer, and (2) at least one low molecular weight liquid elastomer, i.e., polybutene, as tackifying polymer, compatible to a high degree with said hydrogenated polymer; the resultant sealant composition reflecting a co-continuous phase morphology wherein said hydrogenated polymer provides a crosslinked network in said compatible low molecular weight liquid elastomer.Type: GrantFiled: May 7, 1981Date of Patent: May 1, 1984Assignee: The Firestone Tire & Rubber CompanyInventors: Georg G. A. Bohm, Mario DeTrano, James E. Hall
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Patent number: 4426468Abstract: A sealant composition particularly suitable for vehicle tires comprising a cured butyl rubber present only in the form of a copolymer having a molecular weight in excess of 100,000 and one or more tackifiers, the tensile strength, elongation and cross-link density of the composition being adjusted to produce the necessary properties for tire sealants.Type: GrantFiled: August 30, 1982Date of Patent: January 17, 1984Assignee: Rockcor, Inc.Inventors: Joel V. Ornum, Jessie T. Chiu
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Patent number: 4383005Abstract: A rubber composition having an improved adhesion to steel cord comprising(a) a rubber vulcanizable with sulfur,(b) at least one reinforcing filler containing between 10 and 50% by weight of active silicic acid,(c) a vulcanization agent selected from the group consisting of sulfur and a sulfur donor,(d) at least one phenol resin derived from at least one mono- or polyhydric phenol and aldehyde, wherein at most 30% of the phenol component consists of a mono-nuclear polyhydric phenol,(e) a compound of a metal being capable of having various valencies and(f) a methylene donor and a rubber article prepared from said composition.Type: GrantFiled: October 26, 1981Date of Patent: May 10, 1983Assignee: Hoechst AktiengesellschaftInventors: Joachim Weil, Richard Sattelmeyer
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Patent number: 4337322Abstract: A fibrous liquid composition for use in automobile tires to provide sealing, heat-transfer, and wheel balancing. The formula includes asbestos, ethylene glycol monomer, polyethylene glycol, polyisoprene, process oil, detergent, sodium bicarbonate, and water.Type: GrantFiled: September 8, 1981Date of Patent: June 29, 1982Inventor: Lawrence E. Jaspon