Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin

Jérôme Dussillols

Pierre Kiener

Helene Parola

Denis Bernard

Jean-Luc Merceron

Françoise Granet

Hélène Parola

Alexandre Marchi

Sébastien Geffroy

A cup lump natural rubber devoid of impurities with a size of greater than 0.5 mm and having a plasticity retention index of greater than 80 is provided. The use of such a natural rubber in a line for manufacturing a semi-finished product based on natural rubber makes it possible to ensure an improved compromise of performances which are the productivity of a line for manufacturing semi-finished products and the quality of the semi-finished products resulting from this production line.

Natural rubber

A method for preparation of decontaminated natural rubber is provided. The method is characterized in that it comprises a decontamination step in which wet natural rubber coagulum passes through a system comprising an extruder and a filter installed at the extruder outlet, the extruder comprising an axially symmetrical grooved sheath comprising in its thickness grooves opening on the inner surface of the sheath.

Elimination of contaminants in wet natural rubber

A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously:

Process for continuous synthesis of a diene elastomer

Growing community of inventors

Clermont-Ferrand, France

Jérôme Dussillols