At Least One Layer Including Metal Cords Patents (Class 156/124)
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Patent number: 4684421Abstract: A promoter for improving the adhesion of rubber to metals is obtained by reacting an alkaline earth borate such as calcium borate with a cobalt or nickel carboxylate. Preferred carboxylates contain 3-24 carbon atoms.Type: GrantFiled: January 21, 1986Date of Patent: August 4, 1987Assignee: Manchem LimitedInventor: Philip E. R. Tate
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Patent number: 4645718Abstract: A rubber adherable ferrous substrate for use in reinforcing vulcanizable elastomeric products includes a cold worked steel wire having a brass alloy coating of specified compact structure on its surface. There is provided also a process for covering a steel wire substrate with a compact alloy coating, in particular a thin brass diffusion coating having a specified permeability.Type: GrantFiled: October 8, 1985Date of Patent: February 24, 1987Assignee: N.V. Bekaert S.A.Inventor: Paul Dambre
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Patent number: 4605590Abstract: The bond strength between a sulphur-vulcanizable rubber and a metal, especially brass, is increased by using as bonding promoter a compound having the formula[.sup.- O.sub.2 C CH.sub.2 S--B--S CH.sub.2 CO.sub.2.sup.- ]M.sup.++or a hydrate thereof, where B represents a divalent organic radical and M represents cobalt or nickel.Type: GrantFiled: August 12, 1985Date of Patent: August 12, 1986Assignee: Monsanto Europe S. A.Inventors: Jean-Marc Delseth, Albert F. Devaux, Eric R. Lynch
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Patent number: 4605693Abstract: Good adhesion of rubber to metal is very important in rubber articles containing metal reinforcement. For example, in a steel belted tire good adhesion between the tire rubber and the metal tire cord is of utmost importance. Good metal to rubber adhesion is also of great importance in a variety of other rubber products, including power transmission belts, conveyor belts, and rubber hoses containing metal reinforcements. This invention reveals the use of certain adhesion promoters that are useful in rubber products containing metal reinforcements. More specifically, this invention discloses the use of allyl phosphite esters, allyl phosphate esters, 5-nitro isatoic anhydride, iminodiacetic acids, N-substituted iminodiacetic acids, salts of N-substituted iminodiacetic acids, and salts of iminodiacetic acids as adhesion promoters in composites containing rubber and metal.Type: GrantFiled: January 24, 1985Date of Patent: August 12, 1986Assignee: The Goodyear Tire & Rubber CompanyInventor: Syed K. Mowdood
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Patent number: 4572264Abstract: A pneumatic radial tire is disclosed, which comprises steel cords having a two or three layer construction represented by a designation of l+m or l+m+n as a tire reinforcement, wherein two layers at a center side of a transverse section in the steel cord have the same twisting direction but different twisting pitches. In this steel cord, m filaments constituting an outer layer are arranged so as to enter into an inside of a circumscribed circle enveloping l filaments of an inner layer at a non-contact region above a predetermined value and have a form ratio of 90-110%.Type: GrantFiled: December 15, 1983Date of Patent: February 25, 1986Assignee: Bridgestone Tire Co., Ltd.Inventors: Yujiro Umezawa, Shigehisa Sano, Takao Ogino
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Patent number: 4572263Abstract: A pneumatic radial tire comprising: (1) a cylindrical tread portion; (2) side portions located at both sides of the tread portion and extending inwardly in the radial direction; (3) bead portions located at the inner edge portions of the side portions; (4) a carcass comprising at least one ply which is reinforced with a belt arranged on the inside of the tread portion, wherein said belt and/or said carcass ply is reinforced by steel cords; and (5) a rubber composition surrounding the steel cords, wherein said rubber composition comprises: (a) 100 parts by weight of at least one rubber selected from the group consisting of natural rubber and dienic synthetic rubber; (b) 0.1-5.0 parts by weight of alkadiene sulfone; and (c) 0.05-1.0 parts by metal weight of at least one metal salt of an organic acid selected from the group consisting of cobalt salt of an organic acid and nickel salt of an organic acid.Type: GrantFiled: December 1, 1983Date of Patent: February 25, 1986Assignee: Bridgestone CorporationInventors: Masaki Ogawa, Yasushi Hirata, Akira Tsuchikura
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Patent number: 4569382Abstract: Composite of rubber and metal reinforcement where the rubber contains borate and a cross-linkable monomer. Cured composite is useful as component for rubber tires, industrial belts and hose.Type: GrantFiled: May 11, 1981Date of Patent: February 11, 1986Assignee: The Goodyear Tire & Rubber CompanyInventors: Frank S. Maxey, deceased, Syed K. Mowdood
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Patent number: 4569709Abstract: This invention relates to a method for applying a tread to a tire, whereby around a toroidal tire a layer of non-vulcanized rubber is applied, which will form the tread area of the tire after vulcanization in the vulcanization press; and whereby the thus prepared tire is vulcanized in vulcanization press. According to the invention, before the vulcanization of the thus prepared tire in a vulcanization press, portions of the layer of non-vulcanized rubber are removed by peeling or by forming peels of non-vulcanized rubber, so that the shape of the peeled tire is adapted to the shape of the vulcanization press. The invention also relates to a machine for carrying out the method according to the invention.Type: GrantFiled: September 28, 1983Date of Patent: February 11, 1986Assignee: N. V. Bekaert S.A.Inventors: Roger Crommelynck, Eddy Quartier
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Patent number: 4549594Abstract: A composition comprising at least one sulfur-vulcanizable rubber, this composition being intended to adhere to at least one metallic surface during the course of vulcanization, is characterized by the fact that it further comprises from 0.1 to 2 parts by weight of nickel, present in the form of nickel (II) acetylacetonate, per 100 parts by weight of rubber.Type: GrantFiled: April 18, 1984Date of Patent: October 29, 1985Assignee: Compagnie Generale des Etablissements MichelinInventors: Christian Ancel, Pierre Philibert
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Patent number: 4545834Abstract: This invention reveals a steel wire element useful in the reinforcement of rubber articles in which the steel wire is provided with an adhesive coating comprising a ternary brass alloy containing about 55 percent to about 75 percent by weight copper, about 15 to about 45 percent by weight zinc, and about 0.1 to about 10 percent by weight iron. Preferably this ternary brass alloy will contain about 1 to 5 percent by weight iron. The ternary alloy may be formed by sequentially electroplating layers of copper, iron and zinc followed by heating to promote the diffusion of the copper, iron and zinc layers. The steel wire elements of this invention are useful in the reinforcement of vehicle tires, power transmission belts, conveyor belts, hoses, and the like.Type: GrantFiled: April 27, 1984Date of Patent: October 8, 1985Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert M. Shemenski, Dong K. Kim, Thomas W. Starinshak
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Patent number: 4545416Abstract: Radial tires having highly improved durable life by using a rubber composition prepared by incorporating a given amount of a primary fatty acid having 6-10 carbon atoms and/or metal salts of thereof to a rubber for embedding rubber for steel cords in belt portion or carcass portion of radial tires. By further adding thereto cobalt salt of organic acids other than the above described fatty acids and/or boric acid or a metal salt of boric acid, the corrosion resistance of steel cords is synergistically improved.Type: GrantFiled: February 18, 1983Date of Patent: October 8, 1985Assignee: Bridgestone Tire Co., Ltd.Inventors: Michio Itoh, Takehiro Tsukamoto, Shuichi Watanabe, Takeshi Kinoshita, Seisuke Tomita
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Patent number: 4529461Abstract: A process and apparatus for the manufacture of pneumatic tires comprising a carcass formed of reinforcing plies and bead cores are disclosed. The tire carcass is built up around a first drum in cylindrical configuration and bead cores are applied to the carcass. The carcass is transferred telescopically to and around a second expandable drum. The carcass is then torically shaped and the ends of the plies turned-up around the bead cores.Type: GrantFiled: February 22, 1984Date of Patent: July 16, 1985Assignee: Societa' Pneumatici Pirelli Societa per AzioniInventors: Renato Caretta, Bruno Colombani
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Patent number: 4525430Abstract: A rubber article, such as a vehicle tire, reinforced with steel filaments in the form of cables, cords or wefts. The corrosion speed of the steel is reduced by using rubber having a specific electrical resistance of at least 5.times.107 Ohm centimeter.Type: GrantFiled: February 6, 1984Date of Patent: June 25, 1985Inventor: Luc Bourgois
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Patent number: 4520857Abstract: A high-durable pneumatic radial tire is disclosed. In the tire of this type, steel cords each made from particular steel filaments are used in at least one of belt and carcass. This steel filament has a pearlite structure having an average value of interlamellar distance between cementites of 300-500 .ANG., and a tensile strength of not less than 220 kgf/mm.sup.2.Type: GrantFiled: November 8, 1983Date of Patent: June 4, 1985Assignee: Bridgestone Tire Company LimitedInventors: Takao Ogino, Yoichi Watanabe, Shigehisa Sano
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Patent number: 4517066Abstract: Metal to rubber adhesion is improved by metal substrates having a coating thereon such as brass, copper, and the like. The coating is applied by an ion beam sputter deposition or, in the alternative, such a coating is partially removed through ion beam etching. The present invention is particularly useful in tire cord construction, metal reinforced belts and hoses, and the like, since articles made therefrom have superior and unexpected moisture aged rubber-to-metal adhesion properties.Type: GrantFiled: February 16, 1984Date of Patent: May 14, 1985Assignee: The Goodyear Tire & Rubber CompanyInventor: David A. Benko
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Patent number: 4504337Abstract: Method and apparatus for building annular tire components such as steel cord tread reinforcements, in which a measuring drum is employed to receive strip material and simultaneously to feed it to a component building former. The strip material laps a portion only of the measuring drum, and a measured length of the strip is severed on the measuring drum and the major portion of the length of strip is transferred to the building former by rotation of the measuring drum through substantially a whole revolution.Type: GrantFiled: April 30, 1984Date of Patent: March 12, 1985Assignee: Dunlop LimitedInventors: John F. Askam, William H. Coton
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Patent number: 4486477Abstract: Rubber articles which consist of a brass-plated steel cord, or a steel cord which is provided with an alloy layer, and a peroxidically cross-linkable rubber exhibit a good adhesion when the steel cord is sheathed with a rubber mixture B which contains sulphur or a sulphur donor and has a layer thickness .ltoreq.3 mm, a peroxide-containing rubber mixture A is then applied to the rubber mixture B, and the layers are vulcanised together at a temperature of from 130.degree. to 220.degree. C.Type: GrantFiled: June 23, 1983Date of Patent: December 4, 1984Assignee: Bayer AG.Inventor: Jean Mirza
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Patent number: 4481996Abstract: In order to improve the fatigue resistance of a cable, particularly a rubber adherable cable for reinforcing rubber articles such as vehicle tires, substantially uniformly distributed residual compressive stress is induced in substantially the complete peripheric zone of the wires making up the cable. The stress may be induced by submitting lengths of the cable to a number of elementary bending--unbending operations in considerably different planes and simultaneously tensioning the cable.Type: GrantFiled: February 4, 1982Date of Patent: November 13, 1984Assignee: N. V. Bekaert S.A.Inventors: Marc De Bondt, Urbain D'Haene, Paul Dambre
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Patent number: 4453993Abstract: The instant invention is directed to a method for producing reinforcement for cast tires and a method for the production of reinforced cast tires having bead rings, from castable elastomers, the tire inside the mold being restricted by a core during the formation, characterized in that before the toroidal tire core is installed into the mold, the reinforcement and the bead rings are applied thereto. First, the two bead wires are enclosed by a piece of cut fabric which is adapted to the size of the tire, the warp threads in the fabric running substantially perpendicular to the bead rings, then two sides of the fabric are joined, such that the jointure seam runs substantially parallel to the weft direction, as a result of which, both bead wires are connected via the piece of fabric.Type: GrantFiled: April 6, 1983Date of Patent: June 12, 1984Assignee: Bayer AktiengesellschaftInventors: Hans J. Rau, Gerhard Just
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Patent number: 4452291Abstract: A filament, and optionally a cord of cabled filaments, as a composite of (A) a filament and/or cord of steel, (B) a brass and/or zinc coating thereon and (C) a undercoat comprised of selected compounds. The invention further relates to a composite of such filament and/or cord as a reinforcement with rubber.Type: GrantFiled: January 27, 1983Date of Patent: June 5, 1984Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert M. Shemenski, Thomas W. Starinshak
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Patent number: 4446198Abstract: This invention reveals a steel wire element useful in the reinforcement of rubber articles in which the steel wire is provided with an adhesive coating comprising a ternary brass alloy containing about 55 percent to about 75 percent by weight copper, about 15 to about 45 percent by weight zinc, and about 0.1 to about 10 percent by weight iron. Preferably this ternary brass alloy will contain about 1 to 5 percent by weight iron. The steel wire elements of this invention are useful in the reinforcement of vehicle tires, power transmission belts, conveyor belts, hoses, and the like.Type: GrantFiled: September 8, 1983Date of Patent: May 1, 1984Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert M. Shemenski, Dong K. Kim, Thomas W. Starinshak
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Patent number: 4446197Abstract: Metal to rubber adhesion is improved by metal substrates having a coating thereon such as brass, copper, and the like. The coating is applied by an ion beam sputter deposition or, in the alternative, such a coating is partially removed through ion beam etching. The present invention is particularly useful in tire cord construction, metal reinforced belts and hoses, and the like, since articles made therefrom have superior and unexpected moisture aged rubber-to-metal adhesion properties.Type: GrantFiled: July 23, 1982Date of Patent: May 1, 1984Assignee: The Goodyear Tire & Rubber CompanyInventor: David A. Benko
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Rubber compositions and articles thereof having improved metal adhesion and metal adhesion retention
Patent number: 4435477Abstract: Rubber compositions and metal-reinforced rubber ply members have improved metal adhesion and metal adhesion retention to brass and brass-plated metallic reinforcement. The improvement comprises admixing from about 0.5 to about 12.5 parts per hundred rubber (phr) of an organic salt of nickel and at least about 3.0 phr of a thermoplastic resin derived from crude wood rosin containing carboxylic acid groups or carboxylic acid ester groups with a vulcanizable rubber composition prior to embedding the metallic reinforcement therein and curing. A method for improving the metal adhesion and metal adhesion retention between a vulcanizable rubber and brass or brass-plated metallic reinforcement includes the steps of dispersing from about 0.5 to about 12.5 phr of an organic salt of nickel in a vulcanizable rubber composition and dispersing at least about 3.0 phr of the aforementioned thermoplastic resin in the same rubber composition prior to curing.Type: GrantFiled: July 25, 1983Date of Patent: March 6, 1984Assignee: The Firestone Tire & Rubber CompanyInventor: James A. Davis -
Patent number: 4418735Abstract: The tripartite crown reinforcement of this tire is subdivided into a median portion composed of two plies of cables whose extensibility is practically zero, flanked by two lateral portions each composed of three plies of cables whose extensibility is very great. When this tire is not inflated, the edges of its tread resume the falling shape which has been imparted to them in the vulcanization mold.Type: GrantFiled: February 5, 1982Date of Patent: December 6, 1983Assignee: Compagnie Generale des Etablissements MichelinInventor: Jacques Musy
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Patent number: 4391318Abstract: Composite of rubber and metal reinforcement where the rubber contains a cyanuric acid derivative and optionally a borate. Cured composite is useful as component for rubber tires, industrial belts and hose.Type: GrantFiled: May 11, 1981Date of Patent: July 5, 1983Assignee: The Goodyear Tire & Rubber CompanyInventors: Frank S. Maxey, deceased, Syed K. Mowdood
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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: 4347290Abstract: A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper and cobalt in an amount sufficient in use to improve the adhesion between the coated steel wire and the rubber composition. Preferably the brass alloy contains 2% to 4% of cobalt. Applications include coated steel cords for use in vehicle tires and conveyor belts and hoses.Type: GrantFiled: September 3, 1980Date of Patent: August 31, 1982Assignee: N.V. Bekaert S.A.Inventor: Guy Haemers
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Patent number: 4340515Abstract: The present invention relates to a solid rubber adhesion promoter composition. It comprises 20-90%, preferably 60-80% by weight of cobalt naphthenate, nickel naphthenate or a mixture thereof and 10-80%, preferably 20-40% by weight of cobalt resinate, nickel resinate or a mixture thereof.The composition can be produced in the form of crisp, non-dusting, friable cast solids, powders or flakes. It has a long shelf life and mixes very well into rubber compounds.By the use of the present promoter compositions strong rubber-to-metal adhesion is obtained.Type: GrantFiled: June 16, 1981Date of Patent: July 20, 1982Assignee: Akzo NVInventors: Karl-Heinz Frassek, Willy J. van Ooij
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Patent number: 4333787Abstract: The adhesion of brass plated steel cord to rubber is improved by treating the cord in a dilute acidic alcohol dip followed by treatment with H.sub.2 S gas or by treating the cord in a dilute aqueous ammonia dip, preferably followed by treatment with H.sub.2 S gas, before combining the cord with a vulcanizable rubber compound and vulcanizing the same.Type: GrantFiled: May 22, 1980Date of Patent: June 8, 1982Assignee: The General Tire & Rubber CompanyInventor: David E. Erickson
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Patent number: 4330592Abstract: A composite material of steel cords and rubber having improved corrosion fatigue resistance and fretting fatigue resistance and a method of producing the same are disclosed. The composite material is produced by bonding rubber to steel cords through vulcanization. Before the vulcanization, steel cords are treated with a rust preventing material consisting of at least one particular surfactant and at least one particular film-former to form a protect layer on the surface of the steel cord.Type: GrantFiled: July 7, 1980Date of Patent: May 18, 1982Assignee: Bridgestone Tire Company LimitedInventors: Takehiro Tsukamoto, Michitaka Takeshita, Seisuke Tomita
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Patent number: 4301850Abstract: A process of manufacturing tires having a crown reinforcement from one or more liquid or pasty materials which solidify in a core mold is improved due to the fact that prior to the filling of the mold there is placed in the mold an elastically deformable annular net formed of two superimposed plies of parallel wires crossed from one ply to the other at an angle at most equal to 90.degree. with respect to the circumferential direction of the tire, at least the outside of the wires being formed of an elastic and weldable material permitting welding of the wires of one ply to those of the other ply at the points where they intersect, the net being placed in the mold with its edges equidistant from the equatorial plane of the tire.Type: GrantFiled: June 26, 1980Date of Patent: November 24, 1981Assignee: Compagnie Generale des Etablissements MichelinInventors: Andre Schneider, Jean-Pierre Cesar, Jacques Gouttebessis
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Patent number: 4300957Abstract: Brass coated steel tire cord is treated with vaporized benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.Type: GrantFiled: December 13, 1979Date of Patent: November 17, 1981Assignee: The Goodyear Tire & Rubber CompanyInventors: Karol Marencak, Grover W. Rye
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Patent number: 4300973Abstract: A method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent and an imidazolidinone and vulcanizing said composition.Type: GrantFiled: June 23, 1980Date of Patent: November 17, 1981Assignee: American Cyanamid CompanyInventor: Rao S. Bezwada
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Patent number: 4297159Abstract: Process for the direct joining of rubber to metal surfaces by vulcanization using a rubber mixture containing the additives common for sulfur vulcanization wherein either the rubber mixture contains additionally tellurium, tellurium alloys and/or tellurium compounds as bonding aid, or that tellurium, tellurium alloy and/or tellurium compound is applied on the metal surface before vulcanizing.Type: GrantFiled: July 11, 1979Date of Patent: October 27, 1981Assignee: Klaus HeckmannInventors: Bohuslav Dobias, Klaus Heckmann
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Patent number: 4283460Abstract: The vulcanized, aged, adhesion of rubber to brass-coated steel cord is improved by the use of benzotriazole (BTA) and cyclohexylamineborate (CHAB). The BTA and CHAB are used alone or in combination. They are added directly to the surface of the cord or to the rubber immediately adjacent to the cord. BTA treatment will reduce surface contamination of the cord. CHAB will aid in improving aged adhesion.Type: GrantFiled: May 8, 1980Date of Patent: August 11, 1981Assignee: The Goodyear Tire & Rubber CompanyInventor: Robert M. Shemenski, Sr.
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Patent number: 4279284Abstract: Pneumatic rubber tire containing reinforcing steel elements therein characterized in that said tire has an adherent inner liner or an inner tube with its polymer portion comprised of a halobutyl rubber and/or copolymers of isobutylene and cyclopentadiene mixed with a prescribed polybutene polymer.Type: GrantFiled: November 16, 1979Date of Patent: July 21, 1981Assignee: The Goodyear Tire & Rubber CompanyInventor: Leighton R. Spadone
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Patent number: 4269645Abstract: The vulcanized, aged, adhesion of rubber to brass-coated steel cord is improved by the use of benzotriazole (BTA) and cyclohexylamineborate (CHAB). The BTA and CHAB are used alone or in combination. They are added directly to the surface of the cord or to the rubber immediately adjacent to the cord. BTA treatment will reduce surface contamination of the cord. CHAB will aid in improving aged adhesion.Type: GrantFiled: April 14, 1975Date of Patent: May 26, 1981Assignee: The Goodyear Tire & Rubber CompanyInventor: Robert M. Shemenski, Sr.
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Patent number: 4269877Abstract: The vulcanized aged adhesion of rubber to clean brass coated steel cord is improved by the use of benzotriazole (BTA) and/or a precipitation compound such as cyclohexylamine borate and/or an oxidation compound such as zinc chromate. These agents are added directly to the surface of the cord or to the rubber immediately adjacent to the cord. BTA treatment reduces surface degradation of the cord and the precipitation compound and oxidation compound aid in improving aged adhesion. Preferably the cord is cleaned in an acid dip, which can be used to deposit desired anions on the cord surface, prior to treatment.Type: GrantFiled: September 25, 1975Date of Patent: May 26, 1981Assignee: The Goodyear Tire & Rubber CompanyInventor: Robert M. Shemenski, Sr.
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Patent number: 4267079Abstract: Disclosed is an improved cured rubber skim stock composition containing natural rubber utilized in the manufacture of tires, conveyor belts, hoses and the like, and with metallic reinforcement cords embedded therein. The improvement comprises from about 5 to about 25 parts by weight of Neoprene replacing an equivalent amount of natural rubber in order to impart better rubber-to-metal adhesion and adhesion retention between the rubber skim stock and the metallic reinforcement following exposure to long term humidity chamber tests.Type: GrantFiled: November 13, 1979Date of Patent: May 12, 1981Assignee: The Firestone Tire & Rubber CompanyInventors: James A. Davis, Robert C. Koch
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Patent number: 4258770Abstract: Disclosed is a composition for the improvement of the adhesion and adhesion retention between conventional rubber skim stock compositions, utilized in the manufacture of tires, conveyor belts, hoses and the like, and metallic reinforcement cords such as brassed steel. The invention composition is prepared by incorporating an inorganic salt of cobalt or nickel and a rosin-derived resin into the rubber stock prior to contacting the metallic reinforcement. Tests conducted with brass-plated and zinc-plated steel cords showed improved metal adhesion and metal adhesion retention with use of the rubber skim stock of this invention when compared to existing formulations.Type: GrantFiled: August 22, 1979Date of Patent: March 31, 1981Assignee: The Firestone Tire & Rubber CompanyInventors: James A. Davis, Jung W. Kang
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Patent number: 4255496Abstract: A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper, and cobalt in an amount sufficient in use to improve the adhesion between the coated steel wire and the rubber composition. Preferably the brass alloy contains 2% to 4% of cobalt. Applications include coated steel cords for use in vehicle tires and conveyor belts and hoses.Type: GrantFiled: May 21, 1979Date of Patent: March 10, 1981Assignee: N. V. Bekaert S.A.Inventor: Guy Haemers
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Patent number: 4211824Abstract: The bond strength of composite articles of rubber adhered to ferrous metal substrates through an adhesive is substantially improved at ambient and elevated temperatures by depositing a specified amount of a layer of copper on said ferrous metal substrate, applying an adhesive thereover comprising an interpolymer containing about 50 to about 99% by weight of a conjugated diene, about 1-45% by weight of a heterocyclic base and 0 to about 40% by weight of at least one additional copolymerizable monomer, thereafter contacting said adhesive with the rubbber to be bonded and bonding by heat and pressure.Type: GrantFiled: March 21, 1978Date of Patent: July 8, 1980Assignee: Honny Chemicals Company, Ltd.Inventor: Shinichi Yoshida
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Patent number: 4195679Abstract: This invention is directed to a rubber skim stock and a product containing the skim stock having improved adhesion between a brassed metal member and contiguous rubber skim stock. The invention lies in the discovery that improved rubber-to-metal adhesion, and adhesion retention, can be obtained by adding to an otherwise conventional rubber skim stock composition appropriate amounts of sulfides of copper.In the practice of this invention, a sulfide of copper is mixed into a rubber skim stock composition, which composition is brought into contiguous relationship with a brassed metal member in the unvulcanized composition followed by vulcanization to yield the end product.Type: GrantFiled: November 2, 1978Date of Patent: April 1, 1980Assignee: The Firestone Tire & Rubber CompanyInventors: Steven E. Schonfeld, Frederick J. Ravagnani
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Patent number: 4192694Abstract: Brass coated steel tire cord is treated with solid or molten benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.Type: GrantFiled: August 4, 1978Date of Patent: March 11, 1980Assignee: The Goodyear Tire & Rubber CompanyInventor: Grover W. Rye
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Patent number: 4189332Abstract: Brass coated steel tire cord is treated with vaporized benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.Type: GrantFiled: October 10, 1978Date of Patent: February 19, 1980Assignee: The Goodyear Tire & Rubber CompanyInventors: Grover W. Rye, Karol Marencak
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Patent number: 4182639Abstract: Brass-coated steel cord is provided with improved adhesive characteristics for use in tire making, by coating it with certain combinations of sulfur-containing accelerators and phosphate corrosion inhibitors.Type: GrantFiled: November 6, 1978Date of Patent: January 8, 1980Assignee: United States Steel CorporationInventors: Arthur J. Pignocco, Michael E. Waitlevertch
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Patent number: 4146415Abstract: A process is provided for the manufacture of radial tires for vehicle wheels, having an annular reinforcement structure inserted between the tread and the casing. The reinforcement structure has two layers of metal cord and in a radially outer position a third layer of cords arranged in a longitudinal direction. The third layer is made of a textile material which shrinks when heated. The process comprises the steps of first shaping the vulcanized casing to form a toroid, then applying to the shaped casing the two layers of metal cords together with a portion of the layer of textile cords at each side zone of the reinforcement structure. The width of the side zone is between 1/3 and 1/10 of the total width of the structure. The casing is shaped a second time to increase the external equatorial development thereof to a value greater than that reached during the first shaping step. The remaining central portion of the layer of textile cord is then applied on top of the layers of metal cords.Type: GrantFiled: September 13, 1977Date of Patent: March 27, 1979Assignee: Industrie Pirelli, S.p.A.Inventors: Renato Caretta, Romano Guermandi, Maurizio Boiocchi
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Patent number: 4137359Abstract: Vulcanizable elastomeric compositions are described which comprise an elastomer and from about 0.001 to about 0.1 lb mole of metal per 100 lbs of elastomer, the metal content comprising at least one metal which is an oxidizing constituent and a second metal which is a polymerizing constituent or calcium, said metals being present as(a) an organic carboxylic acid salt of two different metals combined with one or more carboxylic acids,(b) a combination of two or more different metal salts of organic carboxylic acids, or(c) a combination of a metal salt of an organic carboxylic acid and a mixed organic acid salt complex.Such vulcanizable elastomeric compositions exhibit improved adhesion to metal surfaces and are, therefore, useful in preparing rubber laminates containing metal reinforcing elements.Type: GrantFiled: October 31, 1977Date of Patent: January 30, 1979Assignee: Mooney Chemicals, Inc.Inventors: Eugene Bak, Albert V. Collins
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Patent number: 4077948Abstract: Adhesion of metals to vulcanizable elastomers is promoted by a process of incorporating into the elastomer a metal deactivator and then vulcanizing the elastomeric composition while it is in contact with the metal surface.Type: GrantFiled: April 7, 1976Date of Patent: March 7, 1978Assignee: Ciba-Geigy CorporationInventors: George K. Cowell, David J. Cherry
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Patent number: 4057529Abstract: A rubber composition comprising a highly unsaturated rubber, a magnesium compound capable of donating electrons and a carboxylated cobalt oxy metal complex comprising at least one metal atom selected from Groups IIIA, IIIB, IVA, IVB, VA and VB of the Periodic Table, at least one cobalt atom, said metal and cobalt atoms being linked through oxygen atoms, at least one acyloxy radical attached to a cobalt atom, and any residual valences of said complex being satisfied by acyloxy, aryloxy or alkoxy radicals.Type: GrantFiled: February 27, 1976Date of Patent: November 8, 1977Assignee: Wyrough and Loser, Inc.Inventors: Thomas J. Leo, Thomas N. Loser, Michael J. Reynolds