Silica with a high oil absorption capability and a controlled pr

Details Silica with a high oil absorption capability and a controlled pr Silica with a high oil absorption capability and a controlled pr

1987-01-16

1989-06-27

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423335, C01B 3312

Patent

active

048428388

ABSTRACT:
Precipitation silicas, in the form of aggregates as shown in FIG. 1, having a mean projected area of the aggregates which is higher than about 8,000 nm.sup.2 and preferably is higher than about 15,000 nm.sup.2. The present invention also concerns a process for the production of precipitation silica by maintaining a constant-volume reaction medium to provide suitable colloids of silica, reacting the colloids with an electrolyte and consolidating the resulting product by the addition of a solution of silicate and an acidifying agent to obtain a precipitation silica.

REFERENCES:
patent: 4001379 (1977-01-01), Turk et al.
patent: 4251281 (1981-02-01), Machurat et al.

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