METHODE POUR PREPARER UN MELANGE MAITRE D'ELASTOMERE DIENIQUE ET DE SILICE

摘要

The invention relates to a method for preparing a masterbatch of diene elastomer and silica, comprising the following successive steps of: preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of an aluminium salt in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The aluminium cation molar ratio, defined as the number of moles of aluminium cations of the aluminium salt per BET unit area of the silica, is between 1,15*10-6 and 5* 10-6 mol/m2.