Compositions for elastomeric compounds comprising tetrazole compatibilizing agents and tyres comprising the same

An elastomeric composition for tyre compounds comprising:

• at least 100 phr of at least one diene elastomeric polymer,
• at least 1 phr of at least a reinforcing filler,
• at least 0.1 phr of at least a monotetrazole compatibilizing agent of formula (I):
• wherein
• A is absent or represents an at least divalent organic group linker, optionally comprising one or more hetero-atom(s), covalently bound to the position 2 or 5 of the tetrazole;
• R is a group covalently bound to position respectively 5 or 2 of the tetrazole, chosen from the group consisting of linear or branched C1-C10 alkyl;
• C6-C20 aryl;
• C3-C10 cycloalkyl;
• and a saturated, unsaturated or aromatic mono or bicyclic, 5- or 6-membered, optionally benzocondensated, heterocyclyl comprising at least one heteroatom chosen from the group consisting of N, S, O;
• R is optionally substituted with at least one electron withdrawing group X or an electron donor group Y;
• or R is a group B,
• B represents a group with high affinity for the reinforcing filler, chosen from the group consisting of a silane substituted with C1-C5 alkoxyls, C1-C5 alkyls and/or C6-C10 aryls, a boronic acid group with the formula (HO)2B—, a saturated, unsaturated or aromatic mono or bicyclic, 5- or 6-membered, optionally benzocondensated, heterocyclyl, comprising at least one heteroatom chosen from the group consisting of N, S and O, and an aromatic polycyclic hydrocarbon
• n is an integer ranging from 1 to 3,
• wherein groups A, B and R do not comprise any 2,5 disubstituted tetrazole;
• and
• from 0 phr to 20 phr of a vulcanising agent.