Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Centre National De La Recherche Scientifique

Universite Montpellier 2

Rachid Matmour

Nicolas Seeboth

Robert Ngo

Cédric Loubat

Vincent Abad

Jean-Michel Favrot

José Carlos Araujo Da Silva

Claire Rannoux

Nathalie Coste

Camille Chatard

Benoit Schnell

François Jean-Baptiste-Dit-Dominique

Julien Chatard

Anne Frédérique Salit

Benoît Schnell

Hervé Cottet

Adeline Jasselin

Gilles Boutevin

Masahiko Moriyama

Anne-Frédérique Salit

Michel Martin

Richard Vivier

Régis Schach

Michael Edward Dotson

Jean Philippe Biron

A resin-extended elastomer comprises an elastomer which is a synthetic diene elastomer with a number-average molar mass of greater than or equal to 200,000 g/mol and a resin which is a plasticizing hydrocarbon-based resin. A process for obtaining such a resin-extended elastomer and compositions, semi-finished products for tires and tires containing same are also disclosed.

Resin-extended elastomer

A process for preparing a random copolymer based on at least one acyclic diene monomers and on at least one cyclic diene monomer is provided. The process comprises a step of copolymerization, in the presence of a polar agent and an anionic initiator in a polymerization solvent, of at least one acyclic diene monomer and of at least one cyclic diene monomer of which one C&#x2550;C double bond is endocyclic and conjugated to an exocyclic C&#x2550;C double bond, at a polymerization temperature below 80&#xb0; C. A molar ratio of the polar agent/function(s) of the anionic initiator capable of initiating anionic polymerization being greater than 0.1. Copolymers based on at least one acyclic diene monomer and on at least one cyclic diene monomer and the compositions containing them are also provided.

Process for preparing a statistical copolymer based on acyclic diene monomers and cyclic diene monomers, copolymers and compositions containing same

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 method for synthesizing a thermoplastic elastomer comprising at least one polydiene block and at least one other poly(&#x3b1;-methylstyrene) block comprises:

Method for synthesizing a thermoplastic elastomer comprising at least one poly(&#x3b1;-methylstyrene) block

A process for synthesizing a polymer bearing at least one phosphonate group in the polymer chain is provided. The process comprises at least the reaction of a starting polymer bearing at least one nucleophilic function in the polymer chain with at least one electrophilic compound bearing both a phosphonate group and an electrophilic function. The electrophilic function is selected from the halide function, the acyl halide function, the ester function, the carboxylic acid function and the isocyanate function.

Method for synthesising a polymer bearing at least one phosphonate group, polymer obtained by said method and composition containing same

A process for the synthesis of a diene copolymer comprising at least two blocks, at least one of the blocks being composed of a diene elastomer, characterized in that it comprises a stage of 1,3-dipolar reaction of two polymers defined as being: This process of synthesis can be adjusted, whatever the nature of the monomers necessary to form each of the blocks of the copolymer. Each block can be synthesized with an appropriate chemistry, independently of the other block.

Diene copolymer including at least two blocks, method for synthesizing same and rubber composition containing same

The invention relates to a process for the synthesis of a polymer bearing one or more pendant hydroxyaryl groups, comprising the reaction of a polymer bearing at least one epoxide functional group with a nucleophilic compound simultaneously bearing the hydroxyaryl group and a nucleophilic functional group selected from the group consisting of the phosphonic acid functional group and its ionic form.

Method for synthesising a polymer having a hydroxyaryl group, product obtained using said method and composition containing same

A method for synthesizing a modified polymer comprising epoxide groups along the polymer chain, by a hydrosilylation reaction of the unsaturations with a hydrosilane bearing an epoxide function in the presence of a suitable catalyst is provided. The method is simple, reproducible and able to be used on an industrial scale, and makes it possible to obtain high grafting yields, since they may reach 100%.

Method for synthesising a diene polymer functionalised by pendant epoxide groups along the chain

The present invention relates to a process for the preparation of a random copolymer based on diene monomers and on cyclic carbosilane monomers. This process is characterized in that it comprises a stage of copolymerization, in the presence of an anionic initiator in a reaction medium comprising a polar solvent, of at least one diene monomer and of a cyclic carbosilane monomer corresponding to the Formula I: 

Method for preparing a statistical copolymer based on diene monomers and cyclic carbosilane monomers

A process for the radical grafting of a graft to a diene elastomer, comprising the following stages: This radical grafting process makes it possible to achieve high grafting yields which can reach 100%.

Process for radical grafting of a diene elastomer

An anionic polymerization initiator of formula:  The use of such a polymerization initiator makes possible the synthesis of a diene elastomer bearing, at one or each of its chain ends, a group comprising an alkyne functional group with a high degree of functionalization.

Anionic polymerization initiator, use thereof for synthesizing a diene elastomer having an alkyne function at the chain end, and functionalized diene elastomer

The invention relates to a tire comprising at least one rubber composition based on at least one diene elastomer, one reinforcing filler, one chemical crosslinking agent and one modifying agent, chosen from the compounds of following formula (I): 

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Clermont-Ferrand, France

Rachid Matmour