process for the production of (co) polymerkautschuks based on conjugated diolefin, (co) polymerkautschuk based on conjugated diolefin, kautschukzusammensetzung and tires

摘要

There is provided a method for producing a conjugated diolefin (co)polymer rubber excellent in processability, independently of the kind and combination of filling agent incorporated, excellent in a balance among wet-skid characteristics, low hysteresis loss, wear resistance and breaking strength, when vulcanization treatment is performed to form a vulcanized rubber, and useful as a material for a tread or a sidewall member of a tire for low fuel consumption, a large sized tire or a high performance tire. A method for producing a conjugated diolefin (co)polymer rubber, which comprises polymerizing either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound in a hydrocarbon solvent by anionic polymerization using at least one compound selected from the group consisting of an organic alkali metal and an organic alkali earth metal as an initiator, thereafter reacting a living polymer chain end thereof with a polyisocyanate compound, and then reacting a residual isocyanate group of the polyisocyanate compound bonded to the living polymer chain end with an alkoxysilane compound containing a functional group having active hydrogen; and a conjugated diolefin (co)polymer rubber obtained therefrom.