Abstract: The present invention is directed to a tire layer (e.g., tire tread or carcass layer) having a rubber composition including a pyrazolone-based compound in combination with reinforcing filler material and optionally a processing aid, and tires using the same, that provides desirable tire performance properties, such as improvements in tear strength without negatively impacting stiffness or hysteresis. In one embodiment, the tire layer includes a rubber composition having an elastomer (e.g., natural or isoprene rubber), a pyrazolone-based compound, reinforcing filler selected from carbon black only, carbon black/silica blends only, or graphene, functionalized graphene, carbon nanotubes, functionalized carbon nanotubes or mixtures thereof further optionally with carbon black, and an optional processing aid, such as a metal glycerolate, in desirable amounts to provide enhanced tear strength without negatively impacting stiffness or hysteresis.

Abstract: A tire having a tread comprising a tread rubber composition comprising from 10 phr to 100 phr of styrene butadiene rubber comprising monomers selected from one or more of recycled and bio-based monomers, from 0 phr to 90 phr of elastomers selected from one or more of natural rubber, polybutadiene rubber comprising monomers selected from one or more of recycled and bio-based monomers, and synthetic polyisoprene comprising monomers selected from one or more of recycled and bio-based monomers, and from 40 phr to 250 phr of a filler comprising one or more of recycled or bio-based silica, and recycled or bio-based carbon black, from 1 phr to 90 phr of hydrocarbon resin which is one or more of i) based on recycled monomers, bio-based monomers or a combination thereof, and ii) a plant resin.

Abstract: A pneumatic tire with a rubber composition comprises a filler comprising 1 phr to 25 phr of carbon nanotubes having 0.25 wt. % to 15 wt. % oxygen; and a measurable amount but at most 10 phr silica particles.

Abstract: A pneumatic tire is made with a rubber composition having 1 phr to 20 phr of turbostratic graphene. Turbostratic graphene is less than 15 wt. % oxygen. The turbostratic graphene exhibits a peak at 1880 cm?1 and a peak at 2030 cm?1, one or both of which peaks are absent in other types of graphene. The turbostratic graphene is not functionalized prior to dispersing in an elastomer. The rubber composition includes carbon black and oil and lacks AB-stacked graphene.

Abstract: The present invention is directed to a tire layer (e.g., tire tread or carcass layer) having a rubber composition including a pyrazolone-based compound in combination with reinforcing filler material and optionally a processing aid, and tires using the same, that provides desirable tire performance properties, such as improvements in tear strength without negatively impacting stiffness or hysteresis. In one embodiment, the tire layer includes a rubber composition having an elastomer (e.g., natural or isoprene rubber), a pyrazolone-based compound, reinforcing filler selected from carbon black only, carbon black/silica blends only, or graphene, functionalized graphene, carbon nanotubes, functionalized carbon nanotubes or mixtures thereof further optionally with carbon black, and an optional processing aid, such as a metal glycerolate, in desirable amounts to provide enhanced tear strength without negatively impacting stiffness or hysteresis.

Abstract: Described herein are conductive rubber compositions including a rubber component and one or more electrically conductive carbon compounds. In another aspect, the conductive rubber compositions can be prepared by first adding the one or more conductive carbon components into the polymer phase, thereby creating a filler network in the continuous polymer phase in the finished product. In a further aspect, the conductive carbon component can be or include one or more of the following: carbon black, a short carbon fiber, graphite powder, or graphene powder. Following mixing, the conductive rubber compositions can optionally be vulcanized. The conductive rubber compositions have good mechanical properties and electrical resistivity and can be processed using existing equipment.

Abstract: A pneumatic tire having a fiber-reinforced rubber layer can help prevent foreign objects from penetrating/extending beyond the tread and into its underlying layer(s), thereby desirably increasing the overall lifespan of the tire. In one embodiment, the tire includes at least one fiber-reinforced rubber layer, which can be generally supported by a tire carcass and interposed directly between a tread portion and belt ply. The fiber-reinforced rubber layer can define a barrier/barrier layer between the tread portion and belt ply and includes a rubber compound that is reinforced with one or more types of fiber (e.g., chopped nylon fiber) and has one or more specific chemical compounds that can provide desirable barrier properties (e.g., abrasion resistance, penetration energy, and DIN properties), thereby helping to prevent foreign objects from penetrating/extending beyond the tire tread and into its underlying layer(s), such as the belt ply and carcass.

Abstract: The invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr): 100 phr of at least one diene-based elastomer; and from 1 to 100 phr of a carbon dioxide-generated carbon reinforcement produce by a method comprising: mixing a first gas stream containing carbon dioxide and a second gas stream containing a gaseous reducing agent to form a reaction gas mixture; supplying the reaction gas mixture to a reaction zone; reacting the carbon dioxide with the gaseous reducing agent in the reaction zone in the presence of an iron-containing catalyst to form water and the solid carbon product; and separating at least a portion of the water formed in the reaction zone from the reaction gas mixture during the reaction of the carbon dioxide with the gaseous reducing agent.

Abstract: The invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr):100 phr of at least one diene-based elastomer; from 1-80 phr of carbon black; from 0 to 100 phr of silica; from 1 to 10 phr of a surface-functionalized carbon allotrope; from 1 to 20 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the silica; and from 0.1 to 10 phr of a tetrazine compound of formula 1 where X1 and X2 each represent a heterocyclic group. The invention also includes a pneumatic tire comprising the vulcanizable rubber composition.

Abstract: The invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr):100 phr of at least one diene-based elastomer; from 20 to 80 phr of carbon black; from 0 to 40 phr of silica; from 1 to 10 phr of a surface-functionalized carbon allotrope; and from 50 to 300 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the surface-functionalized carbon allotrope. The invention also includes a pneumatic tire comprising the vulcanizable rubber composition.