| 摘要 |
PURPOSE: A tread rubber composition for an unpaved road is provided, to improve heat resistance, abrasion resistance and blow-out. CONSTITUTION: The tread rubber composition comprises 100 parts by weight of a source rubber; and 1-5 parts by weight of a fatty acid material whose zinc content is 15-20 wt%. Preferably the fatty acid material is Activator-73 whose zinc content is 18 wt%.
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