The invention relates to a novel process for preparing a 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 as to obtain a filter cake, - said filter cake is subjected to a liquefaction operation, - after the liquefaction operation, a drying step is performed, characterized in that at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation. The invention also relates to novel precipitated silicas and to uses thereof.


    Access

    Download


    Export, share and cite



    Title :

    PROCEDE DE PREPARATION DE SILICES PRECIPITEES, SILICES PRECIPITEES ET LEURS UTILISATIONS, NOTAMMENT POUR LE RENFORCEMENT DE POLYMERES


    Additional title:

    PROCESS FOR THE PREPARATION OF PRECIPITATED SILICAS, PRECIPITATED SILICAS AND THEIR USES, IN PARTICULAR FOR THE REINFORCEMENT OF POLYMERS
    VERFAHREN ZUR HERSTELLUNG VON FÄLLUNGSKIESELSÄURE, FÄLLUNGSKIESELSÄURE UND DEREN VERWENDUNG, INSBESONDERE ZUR VERSTÄRKUNG VON POLYMEREN


    Contributors:
    BOIVIN CÉDRIC (author) / GUY LAURENT (author) / PERIN ERIC (author) / LAMIRI KILANI (author)

    Publication date :

    2020-08-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    French


    Classification :

    IPC:    C01B NON-METALLIC ELEMENTS , Nichtmetallische Elemente / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C09C TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES , Behandlung von anorganischen Stoffen, außer von faserigen Füllstoffen, zum Erhöhen ihrer pigmentierenden oder füllenden Eigenschaften