Abstract: 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.

Abstract: A reinforcing cord is positioned in a mold cavity for reinforcing an annular article such as a tire by wrapping the cord on an annular spacer band which is supported on a mold core and then placed in the mold. The mold is charged with a liquid polyurethane reaction mixture to form an outer polymeric ring of the annular article which is adhered to the cord and partially cured. The spacer band is removed, the mold closed and charged with additional liquid polyurethane reaction mixture to form an inner polymeric ring of the annular article adjacent the reinforcing cord carried by the outer ring. The partially cured outer ring and the inner ring are then cured to adhere the inner ring to the outer ring with the layer of reinforcing cord encapsulated between the rings. An additional layer of reinforcing cord may be positioned in the article by wrapping another cord around a second spacer band having a smaller diameter than the first spacer band.

Abstract: Effective bonding of a vulcanized composite of rubber to a brass coated steel cord is improved by the addition of small amounts of an organic polymer which contains polysulfide linkages in the backbone of the polymeric chain. Under conditions where heat and water ordinarily decrease the adhesion of the composite, rubber compounds with small amounts of the polysulfide have considerably increased adhesion to brass-plated steel cord.

Abstract: 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.

Abstract: 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.

Abstract: A tire having a pair of bead portions for mounting on a rim, a tread portion radially outward of said bead portions and connecting sidewalls is cast and cured from different liquid elastomer forming materials in a three-stage process. First, the inner layer of the tire is molded of high modulus material on a collapsible core in a mold with an outer shell. Second, the first outer shell is removed and a second outer shell of a second mold is mounted around the core and cast inner layer. The tread portion of the tire is then molded by centrifugal casting from a low modulus material. Third, the sidewalls are molded of low modulus, optionally microcellular, material by injection of the liquid elastomer forming material into the sidewall spaces between the molded inner layer and the second outer shell.

Abstract: The invention relates to substituted aromatic diamines and polyurethanes cured thereby. The diamines are individually selected from 3,5-diamino-4-tert-alkylbenzoates, 3,5-diamino-4-tert-alkylbenzonitriles and alkylene bis(3-amino-4-tert-alkylbenzoate).

Abstract: A pneumatic rubber tire having, as its exposed tread, an integral, resilient, covulcanized, closed cell rubber structure.

Abstract: A package comprised of (A) an article selected from unvulcanized rubber or compounding ingredients therefor and (B) a protective film of a thermoplastic ethylene/vinyl acetate copolymer containing anti-block agent and having a vinyl acetate content in the range of 11 to 22 percent. The invention further relates to a compounded rubber comprised of a mixture of unsaturated rubber and a package of compounding ingredients contained in the ethylene/vinyl acetate copolymer film.

Abstract: The invention relates to elastomer composites which can be used for pneumatic tire sidewalls. Such composite particularly comprises a manipulated blend of (A) a hexadiene polymer, (B) high unsaturation rubber, and optionally, (C) a low unsaturation rubber. The sidewall composition particularly enhances the adhesion of the sidewall to the tire carcass stock.

Abstract: This invention concerns a method of polymerizing high acrylonitrile resins in the presence of polymerized copolymers or terpolymers to produce thermoplastic products susceptible to molding and processing operations and having high impact strength and high heat distortion temperatures.

Abstract: A method directed to the preparation of acyclic polyenes by the reaction of 1-pentene with cyclopentene to form a predominance of unsymmetrical acyclic polyenes.

Abstract: A method of preparing a resin by free radical emulsion polymerizing a monomer mixture comprised of (A) a water soluble bifunctional monomer, (B) a hard segment hydrophobic enhancing monomer, (C) optionally, a soft segment hydrophobic enhancing monomer, and (D) a hydrophilic enhancing organic acid. The particular advantage in the invention is the utilization of the water soluble bifunctional monomer which has the purpose of essentially eliminating the necessity of additional emulsifying agents. The resin prepared thereby is designed to be suitable for a water reducible composition.

Abstract: A hydrocarbon-derived, tack enhancing, diolefin/olefin backboned resin prepared by reacting, in the presence of an aliphatic hydrocarbon solvent and a selected catalyst, a monomer mixture comprised primarily of a diolefin/olefin mixture, of the piperylene/olefin type, and about 2 to about 12 weight percent .alpha.-methyl styrene.The resin has a particular application for use as a tackifier with styrene-isoprene-styrene block copolymers.

Abstract: The invention relates to substituted aromatic diamines and polyurethanes cured thereby. The diamines are individually selected from 3,5-diamino-4-tert-alkylbenzoates, 3,5-diamino-4-tert-alkylbenzonitriles and alkylene bis(3-amino-4-tert-alkylbenzoate).

Abstract: A tire/wheel assembly comprised of (A) a pneumatic tire axially mounted on a centered, wheeled rim, said assembly having attached therein a receptacle containing a coolant composition comprised of water and a low molecular weight polyethylene glycol, and (B) means for releasing said coolant composition onto the inner surface of said pneumatic tire. The invention has a particular purpose of inhibiting or retarding a rapid rate and temperature build-up caused by pneumatic tire being at least partially inflated primarily due to a reduction in its inflation pressure.

Abstract: Self-sealing pneumatic tire having a oil treated, integral, thin, covulcanized, resilient, rubber, closed cell structure on its inner surface in which the vulcanized rubber of said closed cell structure contains compounded rubber processing oil and, in its vulcanized state, is further treated to absorb an additional non-volatile oil.

Abstract: An elastomeric interpolymer, method of preparation and blends thereof, where said interpolymer is comprised of (A) a conjugated diene, (B) a comonomer of selected esters and amides and (C) optionally a termonomer selected from at least one of (1) particular conjugated vinylic monomers and (2) selected alkyl esters. The elastomeric interpolymer is particularly useful for the production of industrial goods, especially when blended with thermoplastic materials.

Abstract: A pneumatic rubber tire having a tread comprised of a blend of cis-1,4 polyisoprene rubber and a medium vinyl polybutadiene rubber cured with an excess of sulfur. Said tire has been found to be useful as an aircraft tire having tread of enhanced durability.

Abstract: 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.