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AssigneeBridgestone Corporation
InventorHideyuki SAKURAI
Estimating the term…
An object of the present invention is to enhance, in a rubber composition for tires comprising natural rubber as a principal component of a rubber component, a viscosity of the rubber composition in an unvulcanized state by providing the rubber composition with flexibility to improve workability of the rubber composition and improve a low loss tangent of the rubber composition after vulcanization while maintaining the performances both on snow and ice road surfaces and wet road surfaces. Used in the present invention is a rubber composition comprising a rubber component containing 60% by mass or more of natural rubber, wherein the rubber composition comprises 8 to 40 parts by mass of a thermoplastic resin based on 100 parts by mass of the rubber component and poly-p-dinitrosobenzene.
A rubber composition comprising a rubber component (A) containing 60% by mass or more of natural rubber, wherein the rubber composition comprises 8 to 40 parts by mass of a thermoplastic resin (B) and 0.1 to 3 parts by mass of poly-p-dinitrosobenzene (C) based on 100 parts by mass of the rubber component (A).
A process for producing a rubber composition comprising a rubber component (A) containing 60% by mass or more of natural rubber, wherein the rubber composition is compounded with 8 to 40 parts by mass of a thermoplastic resin (B) and 0.1 to 3 parts by mass of poly-p-dinitrosobenzene (C) based on 100 parts by mass of the rubber component (A), whereby the rubber composition is increased in a viscosity.
Dependencies are inferred from the claim text.