Tire belt based on an inorganic filler and a silane polysulfide

摘要

A tire belt comprising at least one elastomeric composition based on at least one isoprene elastomer, a reinforcing inorganic filler and a silane polysulfide, characterized in that said silane polysulfide satisfies the formula (I): chemistry chemdraw filechemistry mol file;in which: ;the symbols R¹ and R², which may be identical or different, each represent a monovalent hydrocarbon group selected from among alkyls, whether straight-chain or branched, having from 1 to 6 carbon atoms, and the phenyl radical; ;the symbols R³, which may be identical or different, each represent hydrogen or a monovalent hydrocarbon group selected from among alkyls, whether straight-chain or branched, having from 1 to 4 carbon atoms, and alkoxyalkyls, whether straight-chain or branched, having from 2 to 8 carbon atoms; ;the symbols Z, which may be identical or different, are divalent bond groups comprising from 1 to 18 carbon atoms; and ;x is equal to or greater than about 2.