Compagnie Generale Des Etablissements Michelin

Rokhiyatou Said-Diatta

Benoit De Gaudemaris

Pierre Kiener

Florent Vaultier

Leyla Pehlivan

Jean-Philippe Rasigade

Gael Courbes

Gaël Courbes

A process for preparing a functionalized polybutadiene is provided. The process comprises the following steps: The total molar amount of aluminium in the polymerization medium is such that the (aluminium/rare earth salt) molar ratio has a value between 1 and 5 and the polymerization is carried out at a temperature between 40&#xb0; C. and 90&#xb0; C. A functionalized polybutadiene that can be obtained by the process, and a rubber composition containing the functionalized polybutadiene is also provided.

Functionalised polybutadiene synthesis process

A continuous method for producing a diene elastomer is provided. The method comprises a polymerization reaction of a catalytic system with at least one conjugated diene monomer to be polymerized in solution in a solvent. The catalytic system is based on at least a rare earth organic salt and an alkylating agent, in at least two full polymerization reactors in series. A portion of the conjugated diene monomer to be polymerized is introduced into a polymerization reactor subsequent to the first polymerization reactor.

Continuous method for producing a diene elastomer

A process for the preparation of a diene elastomer modified by a 1,3-dipolar compound is provided. The process comprises a thermomechanical kneading of a mixture of a diene elastomer and of a 1,3-dipolar compound in an internal mixer in order to form a modified diene elastomer, followed by an extrusion of the modified diene elastomer.

Method for producing a diene elastomer modified with a 1,3-dipolar compound

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Clermont-Ferrand, France

Rokhiyatou Said-Diatta