Back to results
US 4,734,274 AGranted
Stabilization of aqueous alkali metal aluminate solutions
AssigneeNalco Chemical Company
InventorStephen J. Allenson
Life of this patent
Estimating the term…
Abstract
A method of stabilizing an aqueous solution of alkali metal aluminate comprises admixing an aqueous solution of alkali metal aluminate having a pH of at least 10 with a sufficient amount of carboxylate-containing vinyl polymer to form a solution containing fron 0.1 to 2.0 weight percent of an anionic vinyl polymer based on alkali metal aluminate solids, and a stabilized aqueous alkali metal aluminate solution.
Claims14
A method of stabilizing an aqueous solution of alkali metal aluminate comprising:
- admixing an aqueous solution of alkali metal aluminate having a pH of at least 10 with a sufficient amount of vinyl polymer having pendant carboxylate groups to form a solution containing from 0.1 to 2.0 weight percent of an anionic vinyl polymer based on alkali metal aluminate solids, wherein said anionic vinyl polymer has an average molecular weight of at least 500,000.
A stabilized alkali metal aluminate aqueous solution comprising in admixture:
- an alkali metal aluminate;
- an anionic vinyl polymer;
- and
- water;
- wherein said composition is an ungelled solution haivng a pH of at least 10;
- and
- wherein said anionic vinyl polymer is present in the amount of from 0.1 to 2.0 weight percent based on alkali metal solids and has an average molecular weight of at least 500,000.
4 more elements
Dependencies are inferred from the claim text.