RUBBER COMPOSITION FOR PUNCTURE-PREVENTIVE SEALANT, PNEUMATIC TIRE HAVING TACKY SEALANT LAYER, AND PROCESS FOR PRODUCING THE SAME

摘要

A sealant rubber composition which forms a spongy tacky sealant layer having moderate viscosity properties; and a pneumatic tire having in the tire main body a tacky sealant layer obtained by heating the rubber composition. The rubber composition comprises: 95 to 50 parts by weight of a polymer decomposable with a peroxide; 5 to 50 parts by weight of a polymer crosslinkable with a peroxide; and a peroxide, the amount which is 0.2 to 20 parts by weight per 100 parts by weight of these polymers.