Precipitated silicas

Details Precipitated silicas Precipitated silicas

1997-06-30

1999-03-16

Straub, Gary P.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C01B 3312

Patent

active

058826173

ABSTRACT:
Novel silicas in the form of powder and spherical beads or granules. The silicas are characterized by having a specific CTAB surface of 100-140 m.sup.2 /g, a small median diameter, following disaggregation by ultrasound means, and optionally, a porous distribution so that the porous volume occupied by the pores whose diameter is 175-275 .ANG. is less than 55% of the porous volume occupied by the pores having diameters of 400 .ANG. or less. The invention also concerns a method for the preparation of said silicas and their use as reinforcing fillers for elastomers.

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