Precipitated silicas, a process for their preparation and their

Details Precipitated silicas, a process for their preparation and their Precipitated silicas, a process for their preparation and their

1996-05-29

1998-01-06

Straub, Gary P.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423339, 106492, C01B 3312

Patent

active

057051372

ABSTRACT:
Precipitated silicas, characterized in that they have a CTAB surface area (in accordance with ASTM D 3765-92) of 200 to 400 m.sup.2 /g, a DBP index (in accordance with ASTM D 2414) between 230 and 380 ml/100 g as powder and 180-250 g/100 g as granulate, a silanol group density (V.sub.2 -NaOH consumption) of 20 to 30 ml and the following macropore size distribution which is typical of the surface area range involved, determined by means of Hg porosimetry (DIN 66 133) for specific pore size intervals (incremental mode of application):

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