RUBBER COMPOSITION, METHOD FOR PRODUCING THE SAME, AND PNEUMATIC TIRE

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition having improved appearance by inhibiting the discoloration of the rubber surface without worsening the effects of improving ozone resistance by an amine-based antioxidant, and having excellent long-term antiaging properties. SOLUTION: The amine-based antioxidant is mixed with porous hollow particles having≥50% porosity by melting the amine-based antioxidant to impregnate or fill the porous hollow particles with the amine-based antioxidant. A previously mixed product of the porous hollow particles with the amine-based antioxidant obtained thus is added and kneaded so that the contents of the amine-based antioxidant and the porous hollow particles based on 100 pts.mass of a rubber component comprising a diene rubber may be 0.5-8 pts.mass and 0.1-40 pts.mass, respectively. COPYRIGHT: (C)2011,JPO&INPIT