The present disclosure relates to a modified conjugated diene-based polymer, a method for preparing the same and a rubber composition comprising the same, and the modified conjugated diene-based polymer has narrow molecular weight distribution, and includes S atoms in the specific content in the polymer, a derived unit from an N-containing aromatic hydrocarbon compound, a derived unit from an S-containing aromatic hydrocarbon compound or an S-containing heterocyclic compound.

Provided are a rubber composition which provides a self-healing rubber with improved strength and wet grip performance, and a pneumatic tire including the rubber composition. The present disclosure relates to a rubber composition containing a rubber component having a functional group containing a cationic functional group and/or an anionic functional group, a filler capable of generating a charge paired with the functional group, and sulfur.

A method of preparing functionalized elastomers, including epoxy ring-opening an epoxidized elastomer with a C.sub.1-C.sub.32 hydrocarbyl-substituted thiol to provide a functionalized elastomer comprising an epoxy functional group, a hydroxy functional group, and a C.sub.1-C.sub.32 hydrocarbyl-substituted thio functional group. The hydroxy functional group and the C.sub.1-C.sub.32 hydrocarbyl-substituted thio functional group are vicinal functional groups.

A method of preparing functionalized elastomers, including epoxy ring-opening an epoxidized elastomer with a C.sub.1-C.sub.32 hydrocarbyl-substituted thiol to provide a functionalized elastomer comprising an epoxy functional group, a hydroxy functional group, and a C.sub.1-C.sub.32 hydrocarbyl-substituted thio functional group. The hydroxy functional group and the C.sub.1-C.sub.32 hydrocarbyl-substituted thio functional group are vicinal functional groups.

A vulcanizate is provided that includes a crosslinked network of elastomeric polymer having hydrogen bonds and covalent bonds. A method for preparing a functionalized elastomeric polymer and a method for preparing the vulcanizate are also provided.

A vulcanizate is provided that includes a crosslinked network of elastomeric polymer having hydrogen bonds and covalent bonds. A method for preparing a functionalized elastomeric polymer and a method for preparing the vulcanizate are also provided.

The present invention relates to a rubber composition having excellent tensile properties and viscoelasticity properties and including a modified conjugated diene-based polymer. The rubber composition may include a modified conjugated diene-based polymer which is selected considering target tensile properties and viscoelasticity properties, by predicting in advance the correlation of the modification ratio of the modified conjugated diene-based polymer and the dynamic viscoelasticity loss coefficient at 60° C. of the rubber composition through Mathematical Formula 1 and Mathematical Formula 2. Therefore, excellent compounding properties may be shown.

The present invention is directed to a rubber composition comprising: 70 phr to 100 phr of at least one styrene butadiene rubber, 0 phr to 30 phr of at least one further diene-based rubber, from 40 phr to 200 phr of at least one filler, at least 5 phr of aluminum hydroxide, and at least 10 phr of at least one hydrocarbon resin selected from one or more of DCPD resins, CPD resins, and C5 resins. Furthermore, the present invention is directed to a tire comprising such a rubber composition.

The present invention is directed to a rubber composition comprising: 70 phr to 100 phr of at least one styrene butadiene rubber, 0 phr to 30 phr of at least one further diene-based rubber, from 40 phr to 200 phr of at least one filler, at least 5 phr of aluminum hydroxide, and at least 10 phr of at least one hydrocarbon resin selected from one or more of DCPD resins, CPD resins, and C5 resins. Furthermore, the present invention is directed to a tire comprising such a rubber composition.

This invention relates to a rubber composition containing filler reinforcement comprised of precipitated silica with silica coupling agent therefore and conjugated diene-based elastomer which contains end-chain functionalization with multi-functional groups. The groups functionalizing the elastomer are multi-functional in the sense of containing one group reactive with at least one of said precipitated silica and silica coupling agent and another different group reactive with diene-based elastomers through sulfur cure of the rubber composition. A sulfur cured rubber composition containing said end-chain functionalization is provided. A tire is provided having a component comprised of said rubber composition. Representative of said tire component is a tire tread.