Manufacture of alumina sol

Details Manufacture of alumina sol Manufacture of alumina sol

1976-01-07

1977-06-28

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252317, 252442, 252463, 423626, B01J 1300

Patent

active

040324729

ABSTRACT:
A sufficient amount of alumina is initially digested in aqueous hydrochloric or hydrofluoric acid to provide from about 5 to about 25 wt. % of the aluminum content of the desired alumina sol, and a finely divided aluminum is subsequently digested therein to provide the remaining required amount of alumina. The method enables the digestion reaction to be effected at an increased rate, and affords a sol of improved homogeniety and reproducibility.

REFERENCES:
patent: 3020242 (1962-02-01), McCartney et al.
patent: 3340205 (1967-09-01), Hayes et al.
patent: 3535268 (1970-10-01), Hayes

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