NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, PRECIPITATED SILICA HAVING PARTICULAR MORPHOLOGY, GRADING AND POROSITY, AND USE THEREOF PARTICULARLY FOR REINFORCING POLYMERS

NOVEL METHOD FOR PREPARING PRECIPITATED SILICA, PRECIPITATED SILICA HAVING PARTICULAR MORPHOLOGY, GRADING AND POROSITY, AND USE THEREOF PARTICULARLY FOR REINFORCING POLYMERS

Precipitated silicas including clusters of large primary silica particles having at the surface thereof small primary silica particles, have a specific surface area CTAB (SCTAB) ranging from 60 to 400 m2/g; a cluster average size d50, as measured by XDC grading after ultrasound deagglomeration, such...

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Bibliographische Detailangaben
Hauptverfasser: HERNANDEZ, Julien, AIRIAU, Marc, ALLAIN, Emmanuelle, VENTELON, Lionel, GUY, Laurent
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Zusammenfassung:Precipitated silicas including clusters of large primary silica particles having at the surface thereof small primary silica particles, have a specific surface area CTAB (SCTAB) ranging from 60 to 400 m2/g; a cluster average size d50, as measured by XDC grading after ultrasound deagglomeration, such that d50 (nm)>(6214/SCTAB (m2/g)+23; a pore volume distribution such that V(d5-d50)/V(d5-d100)>0.906−(0.0013×SCATB (m2/g)); and a pore size distribution such that Mode (nm)>(4166/SCTAB (m2/g))−9.2; such silicas are useful reinforcing fillers for polymers.