RUBBER COMPOSITION AND PNEUMATIC TIRE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To satisfy requirement of air permeation resistance or crack growth resistance and further high hardness in terms of enhancing operation stability for an inner liner mainly containing a butyl-based rubber excellent in air permeation prevention performance arranged on inner face of a tubeless pneumatic tire.SOLUTION: The above described problem is solved by a rubber composition by blending 100 pts.mass of a rubber component containing a butyl rubber of 50 to 100 pts.mass, 25 to 75 pts.mass of carbon black having nitrogen adsorption specific surface area (NSA) of 25 to 95 m/g and 0.5 to 10 pts.mass of a styrenic phenol compound mainly containing distyrenated phenol or tristyrenated phenol.SELECTED DRAWING: None