Compagnie Generale Des Etablissements Michelin

Gaël Courbes

Benoit De Gaudemaris

Charlotte Dire

Rokhiyatou Said-Diatta

Florent Vaultier

A modified diene elastomer having a good flow resistance, and imparting to a rubber composition containing the same a good compromise of hysteresis and abrasion properties and a satisfactory processing with a view to a tire application is provided. This modified elastomer comprises: a) at least 70% by weight of a linear diene elastomer predominantly functionalized in the middle of the chain by an alkoxysilane group, optionally partly or completely hydrolyzed to silanol, the alkoxysilane group optionally bearing another function capable of interacting with a reinforcing filler, the silicon atom of the alkoxysilane group lying in the main chain of the diene elastomer; b) more than 0 and up to 30% by weight of a star-branched diene elastomer, the Mooney viscosity of said modified diene elastomer varying from 50 to 80 and the glass transition temperature (Tg) thereof varying from &#x2212;100&#xb0; C. to &#x2212;80&#xb0; C.

Growing community of inventors

Clermont-Ferrand, France

Gaël Courbes