Method for producing rubber composition, rubber composition and tire produced by employing the same

Abstract

A method for preparing a rubber composition capable of improving the physical properties of a final product is disclosed. A rubber composition is prepared by dispersing polybutene in rubber in a solution phase (PIB extended rubber). The method comprises dispersing hydrophobic extender oil and polybutene in water to prepare an extender oil/polybutene emulsion; adding the extender emulsion to a latex-shaped rubber composition and uniformly dispersing the same in a solution to prepare a rubber/extension oil/polybutene composition; and solidifying, drying and molding the composition in a latex shape through salting-out and acid precipitation. When the rubber composition is applied to a tire tread composite material, the durability, grip property and low rotational resistance are improved, thereby attaining improved braking characteristic, low fuel consumption characteristic, and wear performance.

Dependencies are inferred from the claim text.