Colloidal dispersions of cerium (IV) compounds in aqueous media

Details Colloidal dispersions of cerium (IV) compounds in aqueous media Colloidal dispersions of cerium (IV) compounds in aqueous media

1993-03-03

1995-02-14

Stoll, Robert L.

Compositions

Preservative agents

Anti-corrosion

423 211, 423263, 423397, 502304, B01J 1300

Patent

active

053892984

ABSTRACT:
Weakly acidic colloidal dispersions of cerium (IV) compounds in aqueous media, the colloidal solids of which having the general formula Ce(A).sub.x (NO.sub.3).sub.y (OH).sub.4-x-y, in which A is the anion of a water-soluble monovalent carboxylic acid having a pK.sub.a of from 2.5 to 5.0, are produced by (a) reacting and destabilizing an aqueous colloidal dispersion of a cerium (IV) compound with a water-soluble salt of such monovalent acid, (b) separating the precipitate which results, and (c) dispersing the precipitate thus separated in an aqueous medium, e.g., distilled water.

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Derwent Abstract, 87-272879/39.
Derwent Abstract, 83-12892K/06.
Derwent Abstract 87-009210/02.
Derwent Abstract, 87-272880/39.

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