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 comprising the addition of an aluminum compound,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.


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    Titel :

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


    Beteiligte:
    BOIVIN CEDRIC (Autor:in) / GUY LAURENT (Autor:in) / LAMIRI KILANI (Autor:in) / PERIN ERIC (Autor:in)

    Erscheinungsdatum :

    2016-03-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Französisch


    Klassifikation :

    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