Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Aurélie Triguel

Julien Thuilliez

José Carlos Araujo Da Silva

Vincent Lafaquiere

José-Carlos Araujo Da Silva

Emma Moreso

Marc Greiveldinger

Masayuki Maesaka

Mathilde Abad

Catherine Gauthier

Aurore Crochet

A copolymer of ethylene and of isoprene, which comprises from 10 to 35 mol % of isoprene units, at least 70% of which are in the 3,4 configuration and a portion of which is in the 1,2 configuration is provided. A copolymer of this type with a reduced crystallinity is synthesized with a much higher productivity than its homologues of ethylene and of butadiene, and also confers improved curing properties on rubber compositions.

Ethylene and isoprene copolymer

A tire has an outer sidewall, said outer sidewall comprising a rubber composition based on at least one or more diene elastomers, an anti-ozone wax in a content of greater than 8 phr, a reinforcing filler in a content of between 30 and 75 phr, a plasticizer that is liquid at 23&#xb0; C. in a content of between 5 and 40 phr, and a crosslinking system. This composition has the advantage of being highly resistant to external physical attacks.

Tire with an outer sidewall composed of at least a diene elastomer and wax mixture

Growing community of inventors

Clermont-Ferrand, France

Aurélie Triguel