| 摘要 |
<p>Provided are: a rubber composition for a tire outer layer, whereby excellent ozone resistance is obtained in a wide range of environment temperatures, and whereby discoloration can be satisfactorily suppressed; and a pneumatic tire that uses the rubber composition for a tire outer layer. The present invention relates to a rubber composition for a tire outer layer, comprising C20-32 normal alkanes and a phenylene-diamine-based antioxidant and/or quinone-based antioxidant, the total content of the C20-32 normal alkanes being 0.7-3.5 parts by mass, and the total content of the phenylene-diamine-based antioxidant and/or quinone-based antioxidant being 1.5-3 parts by mass with respect to 100 parts by mass of diene-based rubber components.</p> |
