| 摘要 |
The present invention is directed to a pneumatic tire having a built-in seamless polyurethane sealant layer and its preparation. The tire comprises an outer circumferential rubber tread (14), a supporting carcass, an optional rubber barrier layer (13) disposed inwardly of the carcass, a built-in seamless polyurethane based sealant layer (20) disposed inwardly of the carcass or disposed inwardly of the rubber barrier layer (13) if the rubber barrier layer (13) is present, and an inner liner rubber layer (22) disposed inwardly of the polyurethane based sealant layer (20). |
