The present invention relates to compositions for elastomeric compounds for tyres, comprising modified diene polymers terminated with at least one tetrazole group comprising at least one 2,5 disubstituted tetrazole which may be activated by heating, tyre components and tyres for vehicle wheels comprising them. Advantageously, the present modified diene polymers impart to the compounds lower hot hysteresis and reduced Payne effect and, consequently, lower rolling resistance and wear. Furthermore, the present polymers do not exhibit the processability problems shown by conventional functionalised diene polymers, with high affinity for white fillers.
Giannini, L., Tadiello, L., Guerra, S., Papagni, A., Monti, M., De Bellis, V. (2021)Compositions for elastomeric compounds comprising functionalised diene polymers and tyres comprising the same. . Brevetto No. 102021000017195.
Compositions for elastomeric compounds comprising functionalised diene polymers and tyres comprising the same
Tadiello, L;Papagni, A;Monti, M;De Bellis, V
2021
Abstract
The present invention relates to compositions for elastomeric compounds for tyres, comprising modified diene polymers terminated with at least one tetrazole group comprising at least one 2,5 disubstituted tetrazole which may be activated by heating, tyre components and tyres for vehicle wheels comprising them. Advantageously, the present modified diene polymers impart to the compounds lower hot hysteresis and reduced Payne effect and, consequently, lower rolling resistance and wear. Furthermore, the present polymers do not exhibit the processability problems shown by conventional functionalised diene polymers, with high affinity for white fillers.
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