| abstract |
The invention relates to a new process for the preparation of precipitated silica, in which: - a silicate is reacted with an acidifying agent, so as to obtain a suspension of precipitated silica, - said suspension of precipitated silica is filtered, so obtaining a filter cake, - subjecting said filter cake to a disintegration operation, - after the disintegration operation, a drying step is carried out, characterized in that during the filtration cake, of or after the disintegration operation, at least one polycarboxylic acid. It also relates to new precipitated silicas and to their uses. |