Method for preparing a masterbatch of synthetic diene elastomer and silica
AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Etablissements Michelin
InventorsJulien Berriot, Benoît De Gaudemaris, Géraldine Laffargue
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Abstract
The invention relates to a method for preparing a silica/synthetic diene elastomer masterbatch, comprising the following successive steps: doping the silica with an at least divalent metallic element; preparing at least one dispersion of the resulting doped silica in water; bringing a synthetic diene elastomer latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.
Claims20
A method for preparing a silica/synthetic diene elastomer masterbatch, comprising in succession:
- doping a silica with an at least divalent metallic element to form a doped-silica;
- preparing at least one dispersion of the doped silica in water to form an aqueous doped-silica dispersion;
- bringing a synthetic elastomer latex into contact with the aqueous doped-silica dispersion and mixing them together to form a formulation and to obtain a coagulum;
- recovering the coagulum;
- and
- drying the recovered coagulum to obtain a silica/synthetic diene elastomer masterbatch.
Dependencies are inferred from the claim text.