Compositions – Preservative agents – Anti-corrosion
Patent
1994-05-09
1997-04-29
Lovering, Richard D.
Compositions
Preservative agents
Anti-corrosion
106461, 252314, 2523152, 42840224, 501108, 501136, 501137, 501138, 501152, B01J 1300, C04B 3504, C04B 35505, C09C 308
Patent
active
056246048
ABSTRACT:
A method for dispersing and reducing the rate of dissolution and/or hydration of colloidal ceramic suspensions is described. The method comprises adding to a ceramic suspension a non-polymeric hydroxylated organic compound. The organic compound has at least one hydroxyl group, preferably at least two hydroxyl groups. The organic compound also includes a functional group selected from the group consisting of a carboxyl, a carboxylate, a sulfonic acid, a sulfonate, a phosphoric acid, a phosphate, an amine, and a quaternary ammonium salt. The ceramic suspension typically comprises a colloidal suspension of a metal oxide, wherein the metal of the metal oxide is an alkali metal, alkaline-earth metal or a rare-earth metal, but preferably is magnesium, calcium or a rare-earth metal. The non-polymeric organic compound is added to the suspension in an amount effective to substantially disperse and reduce the rate of dissolution of the ceramic particles, such as from about 0.01 weight percent to about 5.0 weight percent.
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Aksay Ilhan A.
Kemp William W.
Nakagawa Hamazo
Sturgis David H.
Yasrebi Mehrdad
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