| abstract |
A rubber composition excellent in processability and a pneumatic rubber tire using the same are provided. The following formula (I), based on 100 parts by weight of rubber: Is a rubber composition comprising 0.01 to 20 parts by weight of a nitroxyl compound represented by the formula: As the rubber, one or more kinds selected from the group consisting of natural rubber, polyisoprene rubber, styrene butadiene rubber, polybutadiene rubber, butyl rubber and ethylene-propylene-diene rubber can be suitably used. A pneumatic rubber tire using such a rubber composition. [Selection figure] None |