Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Ecole Superieure De Chimie Physique Electronique De Lyon

Robert Ngo

Nicolas Seeboth

Julien Thuilliez

Christophe Boisson

Rachid Matmour

Franck D'Agosto

François Jean-Baptiste-Dit-Dominique

Benoît Schnell

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 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 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

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Clermont-Ferrand, France

Robert Ngo