| abstract |
The present invention concerns a tyre of which the inner liner comprises a rubber composition made at least principally from a highly unsaturated diene elastomer, a reinforcing organic filler, graphite, chalk, and a hydrocarbon plasticising resin of which the vitreous transition temperature, Tg, is higher than 20°C and the softening temperature is lower than 170°C. Using such a composition in the tyre inner liner, including graphite and a non-reinforcing chalk filler, makes it possible to considerably improve the sealing properties relative to a control composition that comprises only graphite and that already offers an excellent performance in this respect, but also relative to a control composition conventionally used in tyre inner liners, while keeping the properties of rigidity and processability as high-level as conventional control compositions. |