Abstract: The present invention is directed a rubber composition for a truck tire, the rubber composition comprising 75 phr to 95 phr of polyisoprene, 5 phr to 25 phr of at least one diene based rubber selected from polybutadiene rubber and styrene butadiene rubber, and 40 phr to 70 phr of silica, wherein the silica has a BET surface area within a range of 260 m2/g and 350 m2/g. Furthermore, the present invention is directed to a truck tire comprising such a rubber composition and a truck with a respective tire.

Abstract: The present disclosure relates to a rubber composition comprising at least rubber, and reinforcement materials, the reinforcement materials comprising silica particles and Kraft lignin nanoparticles, wherein the phr ratio between the silica particles and Kraft lignin nanoparticles is ranging between 3 and 20; wherein the Kraft lignin nanoparticles have an average diameter size ranging between 10 and 100 nm as determined by scanning electron microscopy; and wherein the Kraft lignin nanoparticles have a glass transition temperature of at least 150° C. as determined by Differential Scanning Calorimetry.

Abstract: In accordance with the invention, a ply coat rubber composition for a tire ply comprises from 60 phr to 90 phr of natural rubber, from 10 phr to 40 phr of synthetic polyisoprene, from 30 phr to 80 phr of pre-silanized and precipitated silica, from 0.1 phr to 5 phr of a cobalt salt, up to 15 phr of carbon black, up to 5 phr of resin, and up to 8 phr of oil. Moreover, the invention is directed to a tire comprising such a rubber composition.

Abstract: In accordance with the invention, a ply coat rubber composition for a tire ply comprises from 60 phr to 90 phr of natural rubber, from 10 phr to 40 phr of synthetic polyisoprene, from 30 phr to 80 phr of pre-silanized and precipitated silica, from 0.1 phr to 5 phr of a cobalt salt, up to 15 phr of carbon black, up to 5 phr of resin, and up to 8 phr of oil. Moreover, the invention is directed to a tire comprising such a rubber composition.

Abstract: The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising from 30 to 80 phr of a styrene-butadiene rubber having a Tg ranging from ?70 C to ?40 C, from 10 to 50 phr of a high vinyl polybutadiene having a Tg ranging from ?40 C to ?5 C and has an isomeric vinyl 1,2 content in a range of from 50 to 90 percent by weight, and from 10 to 30 phr of a natural rubber or synthetic polyisoprene, silica, a blocked mercaptosilane, a traction resin, and liquid plasticizer selected from the group consisting of a low molecular weight polybutadiene functionalized with a hydroxyl functional group and sunflower oil.

Abstract: The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising a diene elastomer, a pre-hydrophobated precipitated silica, a blocked mercaptosilane, a terpene-phenol resin, and a low molecular weight polybutadiene functionalized with a hydroxyl functional group, wherein the pre-hydrophobated precipitated silica is hydrophobated prior to its addition the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes and optionally at least one dispersing aid selected from the group consisting of fatty acids, diethylene glycols, polyethylene glycols, fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars, polyoxyethylene derivatives of fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars.

Abstract: The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising a diene elastomer, a pre-hydrophobated precipitated silica, a blocked mercaptosilane, a terpene-phenol resin, and a low molecular weight polybutadiene functionalized with a hydroxyl functional group, wherein the pre-hydrophobated precipitated silica is hydrophobated prior to its addition the rubber composition by treatment with at least one silane selected from the group consisting of alkylsilanes, alkoxysilanes, organoalkoxysilyl polysulfides and organomercaptoalkoxysilanes and optionally at least one dispersing aid selected from the group consisting of fatty acids, diethylene glycols, polyethylene glycols, fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars, polyoxyethylene derivatives of fatty acid esters of hydrogenated or non-hydrogenated C5 or C6 sugars.

Abstract: The present invention is directed to a pneumatic tire comprising a tread, the tread comprising a rubber composition comprising from 30 to 80 phr of a styrene-butadiene rubber having a Tg ranging from ?70 C to ?40 C, from 10 to 50 phr of a high vinyl polybutadiene having a Tg ranging from ?40 C to ?5 C and has an isomeric vinyl 1,2 content in a range of from 50 to 90 percent by weight, and from 10 to 30 phr of a natural rubber or synthetic polyisoprene, silica, a blocked mercaptosilane, a traction resin, and liquid plasticizer selected from the group consisting of a low molecular weight polybutadiene functionalized with a hydroxyl functional group and sunflower oil.

Abstract: This invention relates to a tire with a tread of a rubber composition that promotes a combination of winter traction at low temperatures and for promoting wet traction. The tread rubber composition contains a combination of low surface area silica and high softening point traction resin. Elastomers for the tread rubber composition are comprised of high cis 1,4-polybutadiene rubber and styrene/butadiene rubber.