Abstract: An aqueous coating composition which can be applied to a cured rubber surface, such as the white sidewall, colored sidewall, raised white lettering or raised colored lettering of a tire, to provide a protective coating against staining and scuffing. The composition includes (a) polyvinyl alcohol, (b) ethylene-vinyl acetate copolymer, and (c) one or both of (i) a silicon emulsion in an amount sufficient to provide increased scuff resistance to a coating prepared from the composition, and (ii) a thickening agent of a type and in an amount effective to render the composition shear-thinning.

Abstract: Expandable bladders for use in curing presses for hydrocarbon rubbers such as pneumatic tires are a crosslink elastomer comprising isobutylene repeat units and include graphite. A preferred isobutylene elastomer is a brominated copolymer of isobutylene and p-methylstyrene. The bladders have enhanced lubricity, low adhesion to tire innerliners, and lower hot tension set. The above enhancements allow hydrocarbon rubbers such as tires to be molded with fewer defects caused by abraded or deformed bladders. They also enhance the useful life of the bladder reducing the cost of tire curing.

Abstract: The treatment of an uncured or partially cured rubber surface with a solvent mixture of a blend of n-heptane and iso-heptane. The treatment is to remove surface bloom and/or freshen the surface and to maintain or increase building tack. Cured adhesion can also be enhanced or maintained. An appropriate solvent mixture is provided. An article can be produced thereby as a cured assembly of rubber components. In one aspect, a purpose is to provide a suitable solvent mixture treatment of an uncured or partially cured rubber surface with a solvent mixture which has an acceptably minimal aromatic content, suitable drying time on the rubber surface and an acceptable odor in the workplace.

Abstract: A package comprised of at least one compounding ingredient for unvulcanized rubber contained in a protective film of a thermoplastic polycaprolactone. The invention further relates to a compounded rubber comprised of a mixture of unsaturated rubber and a package of compounding ingredients contained in the polycaprolactone film. For such purposes, the polycaprolactone film can be in the form of a bag thereof.

Abstract: The marking of a surface of an uncured diene rubber product with a marking, or identifying coating, which maintains its identity upon curing the rubber. In one aspect, the coating is applied as a water based dispersion of zinc oxide pigment in a sulfur curable polymeric latex binder. An article can be produced thereby as a cured assembly of rubber components.

Abstract: The marking of a surface of an uncured diene rubber product with a marking, or identifying coating, which disappears upon curing the rubber. In one aspect, the coating is applied as a water based dispersion of a white colored metallic salt of a fatty acid having a melting point below 150.degree. C. (e.g. zinc stearate) in a sulfur curable polymeric latex binder. An article can be produced thereby as a cured assembly of rubber components.

Abstract: A cured rubber tire having a surface coated with at least one of polyvinylpyrrolidone and a monavalent water soluble salt of methylvinylether/maleic acid copolymer.

Abstract: The treatment of an uncured or partially cured rubber surface with a solvent mixture of n-heptane and specified hydrocarbon(s). The treatment is to add building tack. Cured adhesion can also be enhanced. An appropriate solvent mixture is provided. An article can be produced thereby as a cured assembly of rubber components.

Abstract: The marking of an uncured or partially cured rubber surface with a marking, or identifying coating, which basically, disappears upon curing the rubber. In one aspect, the coating is applied as a suspension or solution in a specified solvent mixture. An article can be produced thereby as a cured assembly of rubber components.

Abstract: A rubber laminate comprising a rubber substrate having coated thereon a blend of a water dispersible insoluble polyurethane and a water soluble polyvinyl alcohol. The combination of water soluble and water insoluble polymers upon drying result in a film that is humidity resistant, and has good abrasion resistance but can be removed by high-pressure washing or scrubbing.

Abstract: A cured rubber tire having a surface coated with at least one of polyvinylpyrrolidone and a monovalent water soluble salt of methylvinylether/maleic acid copolymer.

Abstract: A film composite comprised of a linear low density polyethylene film having a polyvinylalcohol coat thereon. A package is provided comprised of a toroidally shaped pneumatic rubber tire having such film composite stretched wrapped around its toris in a helical fashion with the polyvinylalcohol coating positioned against the surface of the tire.

Abstract: A film composite comprised of a linear low density polyethylene film having a polyvinylalcohol coat thereon. A package is provided comprised of a toroidally shaped pneumatic rubber tire having such film composite stretched wrapped around its toris in a helical fashion with the polyvinylalcohol coating positioned against the surface of the tire.

Abstract: A composition comprised of polyvinylalcohol coating containing at least one water soluble ultraviolet absorber. In one aspect, there is provided a rubber tire having at least one surface coated with such composition.

Abstract: A pneumatic tire having a coating on at least one of its surfaces comprised of (a) polyvinyl-alcohol coating material containing (B) aluminum hydroxide.

Abstract: There is disclosed a method for enhancing the cure of a sulfur vulcanizable elastomer which comprises adding to the vulcanizable elastomer a mixture of tall oil fatty acids comprising at least (a) from about 28% to about 55% by weight of oleic acid, (b) from about 25% to about 40% by weight of linoleic acid, (c) from about 4% to about 20% conjugated linoleic acid and (d) from about 0% to about 8% rosin acids. Use of a mixture of tall oil acids as a cure activator significantly lowers the cost of producing the vulcanizate while concomitantly improving the adhesion and dynamic properties of the elastomer.

Abstract: There is disclosed a method for enhancing the cure of a sulfur vulcanizable elastomer which comprises adding to the vulcanizable elastomer a mixture of tall oil fatty acids comprising at least (a) from about 28% to about 55% by weight of oleic acid, (b) from about 25% to about 40% by weight of linoleic acid, (c) from about 4% to about 20% conjugated linoleic acid and (d) from about 0% to about 8% rosin acids. Use of a mixture of tall oil acids as a cure activator significantly lowers the cost of producing the vulcanizate while concomitantly improving the adhesion and dynamic properties of the elastomer.

Abstract: Tire coating composition (non-wax) composed of a rubber selected from polybutadiene and/or styrene/butadiene copolymer, carbon black having a large particle size and, preferably, a non-ionic surfactant and use thereof for curing tires. Optionally, the composition can also contain at least one of mica and talc.