Coating compositions containing precipitated silica

Details Coating compositions containing precipitated silica Coating compositions containing precipitated silica

1975-02-13

1976-11-23

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

C09C 130

Patent

active

039934977

ABSTRACT:
Silica products having very high structure as defined by the ability of the silica material to hold water in its wet cake, high oil absorption, and very high surface area can be produced by controlling the rate of acidulation during their production and maintaining the same at a very low rate during the course of the addition of acid to the solution of alkali metal silicate. The control of the index of refraction of the silica so produced is achieved by introduction of controlled amounts of adduct material such as aluminum sulfate to the acid prior to its introduction to the silicate solution.

REFERENCES:
patent: 3250594 (1966-05-01), Burke
patent: 3719741 (1973-03-01), Burke

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