Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Sk Geo Centric Co., Ltd.

Benoit Schnell

Julien Thuilliez

Corentin Pavageau

Julien Cladiere

Alain Bouilloux

Rachid Matmour

Etienne Fleury

François Jean-Baptiste-Dit-Dominique

Sebastien Quinebeche

Séverin Dronet

Adeline Jasselin

Lise Maisonneuve

Catherine Mougin

Anne-Frédérique Salit

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 a reinforcing filler and on an elastomer comprising units of a 1,3-diene monomer and bearing carbonate functions, each present in a 1,3-dioxolan-2-one ring is provided. The composition has improved reinforcement.

Rubber composition including a diene elastomer comprising carbonate functional groups

A rubber composition is based on at least one predominant elastomer comprising epoxide functional groups, silica as predominant reinforcing filler, an agent for covering the silica, and a system for crosslinking the elastomer comprising an imidazole and a polycarboxylic acid of general formula (I): and an imidazole of general formula (II): 

Rubber composition comprising an epoxide elastomer cross-linked by a polycarboxylic acid

A rubber composition based on a reinforcing filler and on an elastomeric matrix comprising a highly saturated diene elastomer, comprising units of the following categories A, B, C, D and E, or units of these same categories A, B, C, D and E comprising, for at least one of the categories B, C, D and E, a mixture of at least two different units of the same category which differ from one another through the nature of their side groups Ri: and where R1, R2, R3 and R4, which are identical or different, denote a hydrogen atom, a methyl radical or a phenyl radical which is substituted or unsubstituted in the ortho, meta or para position by a methyl radical; R5 denotes a hydrogen atom or a methyl radical; R6 denotes a methyl radical or a phenyl radical which is substituted or unsubstituted in the ortho, meta or para position by a methyl radical; m, n, o, p and q are numbers ranging from 0 to 100. This rubber composition enables a satisfactory degree of stiffness to be achieved while maintaining acceptable hysteresis properties, or even improving them, for use in the manufacture of tires for motor vehicles.

Rubber composition containing a highly saturated diene elastomer

The present invention relates to a rubber composition based on a reinforcing filler and on an elastomer matrix comprising a highly saturated diene elastomer comprising at least five distinct units of A, B, C, D and E distributed randomly within the elastomer at respective molar fractions of m %, n %, o %, p % and q %, where m+n+o+p+q=100; m&#x2265;50; n+o+p+q&#x2265;10; and 15&#x2265;p+q&#x2265;2. This rubber composition enables a satisfactory degree of stiffness to be reached while maintaining hysteresis properties acceptable for use in the manufacture of tires for running vehicles.

Growing community of inventors

Clermont-Ferrand, France

Benoit Schnell