TYRE COMPRISING LOW-SULPHUR ELASTOMER MIXTURES

摘要

The invention relates to a tyre having radial carcass reinforcement (2) consisting of a layer of reinforcing elements anchored in each of the beads by turning up around a bead wire (4), said turn-up of the carcass reinforcement being reinforced by at least one layer of reinforcing or stiffening elements (8). According to the invention, the relative density of sulphur bonds measured according to the method for inflation to equilibrium is lower than 5 % in at least 30 % of the elastomer mixtures contained in the surface of at least one area Z in a meridian plane, said elastomer mixtures being compositions based on at least one diene elastomer selected from the group of the diene elastomers consisting of the polybutadienes (in the abstract "BR"), the synthetic polyisoprenes (IR), natural rubber (NR), isoprene copolymers, butadiene copolymers except for the butadiene-nitrile copolymers (NBR), excluding the diene elastomers having carboxyl functions, and the mixtures of said diene elastomers.