| 摘要 |
PURPOSE: A tire sidewall rubber composition is provided to ensure excellent tolerance for climate, aging resistance to the sunlight, bending resistance and exothermic resistance. CONSTITUTION: A tire sidewall rubber composition comprises 1~5 parts by weight of 4-(2,5-dimethyl-1H-pyrrol-1yl-N-phenylbenzenediamine) based on 100 parts by weight of the base rubber. The 4-(2,5-dimethyl-1H-pyrrol-1yl-N-phenylbenzenediamine) represented by formula (1) is prepared by dissolving hexane-2,5-dione represented by formula (2) and N1-phenylbenzene-1,4-diamine represented by formula (3) in toluene and reacting it in the presence of p-toluene-sulfonic acid. |
