| 摘要 |
Provided are a bladder rubber composition for the vulcanization of a tire which is reduced in vulcanization time and is increased in scotch time, and a bladder for the vulcanization of a tire containing the rubber comprising the composition. The bladder rubber composition comprises 1-5 parts by weight of magnesium aluminum hydroxide carbonate as an additive based on 100 parts by weight of a rubber material which is a copolymer rubber comprising a butyl rubber and p-methylstyrene. Preferably the rubber material is a copolymer rubber which comprises 20-50 parts by weight of a butyl rubber and 50-80 parts by weight of p-methylstyrene. |
