| abstract |
Precipitated silica, characterized in that it has: - a specific BET surface area between 45 and 550 m2 / g, in particular between 70 and 370 m2 / g, particularly between 80 and 300 m2 / g, - a content (C) in polycarboxylic acid + corresponding carboxylate, expressed in total carbon, of at least 0.15% by weight, in particular at least 0.20% by weight, - an aluminum (Al) content of at least 0.20% in weight, in particular at least 0.25% by weight, and because it has methylglutaric acid molecules on its surface. |