Compagnie Generale Des Etablissements Michelin

Delphine Nayrat

Didier Vasseur

Luc Bestgen

Jacques Babaud

Jean-Luc Guerbert-Jubert

Orel Fournier

A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative and a peroxide, the contents of polyfunctional acrylate derivative and of peroxide being such that the ratio of the content of polyfunctional acrylate derivative to the content of peroxide is greater than or equal to 6.

Tire comprising a composition comprising a polyfunctional acrylate derivative and a peroxide

The tire has a carcass reinforcement which has at least one layer and a crown reinforcement that is capped radially by a tread. The tire also includes a layer P of polymer compounds in contact with at least one working crown layer and in contact with the carcass reinforcement. The elastomer compounds forming the calendering layer, radially outermost with respect to the crown of the tire, of the carcass reinforcement layer have a relative density of sulfur bridges of less than 5%. The elastomer compounds forming the layer P have a relative density of sulfur bridges of less than 5%. The elastomer compounds are compositions based on at least one diene elastomer selected from the group of polybutadienes (BRs), synthetic polyisoprenes (IRs), natural rubber (NR), isoprene copolymers, butadiene copolymers with the exception of butadiene-nitrile copolymers (NBRs), apart from diene elastomers bearing carboxyl functions, and mixtures of these diene elastomers.

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Clermont-Ferrand, France

Delphine Nayrat