Michelin Recherche Et Technique S.a.

Compagnie Générale Des Etablissements Michelin-Michelin & Cie

Compagnie Generale Des Etablissements Michelin

Rhodia Chimie

Compagnie Generale Des Establissements Michelin - Michelin & Cie

Societe Detechnologie Michelin

Olivier Durel

Yves Bomal

Roland Rauline

Brigitte Marie Chauvin

Olivier Mathey

Julien Hernandez

Nathalie Guennouni

Arnaud Lapra

Rémi Valero

Patrick Pennequin

Serge Semonsut

Gilles Vidal

A tire comprising at least a rubber composition based on at least a blend of natural rubber, NR, or synthetic polyisoprene, and a styrene-butadiene copolymer, SBR, the SBR having a content greater than or equal to 20 parts per hundred parts of elastomer, phr, a reinforcing filler comprising carbon black, characterized in that the composition comprises a plasticizing resin having a glass transition temperature, Tg, greater than or equal to 20&#xb0; C. and that the SBR has a Tg greater than or equal to &#x2212;65&#xb0; C.

Tire with improved grip on wet ground

A tire tread incorporating an elastomeric composition reinforced with silica, based on at least (phr=parts by weight per hundred parts of diene elastomer): Preferably, this LS silica furthermore has a disagglomeration rate &#x3b1; greater than 5&#xd7;10&#x3bc;m/min (measured in the ultrasound disagglomeration test). Compared with a conventional tread for 'Green Tires' reinforced with a silica of higher specific surface area, the tread of the invention has an improved compromise of performances in terms of wear resistance, rolling resistance, grip and drift thrust.

Tire tread reinforced with a silica of very low specific surface area

A tire tread incorporating an elastomeric composition reinforced by an inorganic filler, based on at least: Preferably, this silica furthermore has a disagglomeration rate &#x3b1; greater than 5&#xd7;10&#x3bc;m/min (measured in the ultrasound disagglomeration test). Compared with a conventional tread for 'Green Tires' which is reinforced with a silica of higher specific surface area, the tread of the invention has an improved compromise of (wear resistance/rolling resistance/grip on wet ground) performances. The use of a very small amount of zinc makes it possible to overcome an increase in the induction delays during the vulcanization, when such a silica of low specific surface area is used.

Tire tread reinforced with a silica of low specific surface area

Diene rubber compositions are described containing a diene elastomer, a reinforcing inorganic filler, and a coupling agent wherein the inorganic filler includes a silica having the following characteristics:

Diene rubber composition for tire comprising a specific silica as reinforcing filler

A tire or tire tread incorporating an elastomeric composition having improved vulcanization kinetics, based on at least a diene elastomer, a reinforcing inorganic filler and, as (inorganic filler/elastomer) coupling agent, a bis-alkoxysilane tetrasulfide of the formula: in which:

Tire and tread comprising a bis-alkoxysilane tetrasulfide as coupling agent

Rubber composition intended for the manufacture of tire casings which have improved hysteretic properties and scorch safety, based on at least one elastomer and silica by way of reinforcing filler enclosing a reinforcing additive consisting of the mixture and/or the product of in situ reaction of at least one functionalized polyorganosiloxane compound containing, per molecule, at least one functional siloxy unit capable of bonding chemically and/or physically to the surface hydroxyl sites of the silica particles and at least one functionalized organosilane compound containing, per molecule, at least one functional group capable of bonding chemically and/or physically to the polyorganosiloxane and/or the hydroxyl sites of the silica particles and at least one other functional group capable of bonding chemically and/or physically to the polymer chains.

Rubber composition for tire casings based on silicas containing a reinforcing additive based on a functionalized polyorganosiloxane and on an organosilane compound

Use of a combination of silicone compounds as a coupling agent in silica-loaded elastomer compositions

Rubber composition intended for the manufacture of tire casings which have mproved hysteretic properties and scorch safety, based on at least one elastomer and silica by way of reinforcing filler enclosing a reinforcing additive consisting of the mixture and/or the product of in situ reaction of at least one functionalized polyorganosiloxane compound containing, per molecule, at least one functional siloxy unit capable of bonding chemically and/or physically to the surface hydroxyl sites of the silica particles and at least one functionalized organosilane compound containing, per molecule, at least one functional group capable of bonding chemically and/or physically to the polyorganosiloxane and/or the hydroxyl sites of the silica particles and at least one other functional group capable of bonding chemically and/or physically to the polymer chains.

Rubber composition for tire casings based on silicas containing a

A process for hardening a composition and a hardenable composition, in wh there are used:

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Clermont-Ferrand, France

Olivier Durel