Compagnie Generale Des Etablissements Michelin

Sk Geo Centric Co., Ltd.

Corentin Pavageau

Benoit Schnell

Séverin Dronet

Alain Bouilloux

Sebastien Quinebeche

Benoît Schnell

Laurent Petitjean

Marc Couty

A rubber composition is based on at least: a copolymer A based on at least one ethylene monomer and on at least one vinyl acetate monomer; a reinforcing inorganic filler, said inorganic filler comprising silica; as agent for coupling between said copolymer A and said reinforcing inorganic filler, an organosilane compound of formula (I)B-Z&#x2014;Si(G)(G)&#x2003;&#x2003;(I),wherein B, Z, G, Gand (d) have the meanings indicated in the claims; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Reinforced rubber composition

A rubber composition is based on at least: a copolymer A, with a content of greater than or equal to 50 phr, said copolymer A being a copolymer based on at least one ethylene monomer and on at least one vinyl acetate monomer a reinforcing inorganic filler as agent for coupling between said copolymer A and said reinforcing inorganic filler, a copolymer B different from said copolymer A, said copolymer B being a copolymer based on at least one alpha-olefin monomer and on at least one functional monomer Y; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

A rubber composition based on at least an elastomer matrix is provided. The elastomer matrix comprises a first diene elastomer having a number-average molecular weight, Mn, of greater than or equal to 100 000 g/mol; a functionalized second diene elastomer bearing at the chain end a function capable of reacting with the surface of silica, said functionalized diene elastomer having a number-average molecular weight, Mn, of less than or equal to 80 000 g/mol: and a reinforcing inorganic filler, in an amount ranging from 55 phr to 200 phr. The elastomeric matrix allows good dispersion of the reinforcing inorganic filler. A finished or semi-finished article comprising such a composition, tire tread comprising such a composition, and a tire or semi-finished product comprising such a composition is also provided.

Rubber composition with a good dispersion of large amounts of reinforcing inorganic filler

A tire comprising a rubber composition comprising a substituted diene elastomer is provided. The substituted diene elastomer comprises units bearing an A-B radical, in which: A tread comprising such a rubber composition is also provided. A rubber composition comprising such a substituted diene elastomer and at least one of the following constituents: a second diene elastomer; a reinforcing filler and, if appropriate, a coupling agent is also provided.

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Clermont-Ferrand, France

Corentin Pavageau