COMPOSITION OF BLADDER FOR HARDENING TIRE HAVING ALKYL PHENOXY POLY(ALKYLENE OXY)ALKANOL

摘要

PURPOSE: An expansible bladder is provided to be used to a press for hardening a rubber composition such as tire of air pressure. CONSTITUTION: A bladder is produced by bridging more than one bridgeable rubber polymers containing more than one isobutylene tuber polymers over 90wt%(based on the whole rubber polymer) having a repeated segment over 90wt% from the isobutylene, the repeated segment of 1-10wt% from a conjugated diene having 4-8 carbon atoms, and the halogen repeated segment under 10wt% except a selectively bromated paramethyle styrene, and a rubber mixture containing more than one hardeners for more than one rubber polymers. The bladder contains a mono or a poly(alkyl)phenoxy poly(alkylene oxy)alkanol dispersed in the whole bladder additionally.