| 摘要 |
<p>The purpose of the present invention is to provide a rubber composition for a tyre having superior workability whilst maintaining a 60ºC tandelta reduction effect, a manufacturing method for this rubber composition, and a pneumatic tyre using this rubber composition. The rubber composition of the present invention comprises a diene rubber including 30 to 90 wt% of one, two or more types of aromatic vinyl-conjugated diene copolymer having 20 to 40 wt% of 1,2-bonds in the conjugated diene. The total amount of 1,2-bonds is 10 to 55 wt% of the overall diene rubber. In the mixing step process for this rubber composition, 0.5 to 20 parts by weight silane coupling agent expressed by a specific formula and 20 to 120 parts by weight silica are mixed in per 100 parts by weight diene rubber. A vulcanising agent is not used in the mixing process, and the mixing temperature in the mixing process is less than 140ºC.</p> |
