Hydrogen peroxide stabilization with phenylphosphonic acids
AssigneePPG Industries, Inc.
InventorW. Albert Strong
Life of this patent
Estimating the term…
Abstract
Aqueous hydrogen peroxide solutions are stabilized with the use of phenylphosphonic acids or salts thereof, preferably in combination with known stabilizer additives: stannates, nitrates, and pyrophosphates.
Claims10
A stabilized aqueous hydrogen peroxide solution containing a minor stabilizing concentration, sufficient to inhibit decomposition of hydrogen peroxide induced by polyvalent metal cation contamination, of soluble stabilizer selected from the group consisting of phenylphosphonic acids having 0 to 3 lower alkyl substituents on the phenyl group, and alkali metal and ammonium salts thereof.
A method of stabilizing aqueous hydrogen peroxide which comprises:
- adding to an aqueous hydrogen peroxide solution a minor stabilizing amount, sufficient to inhibit decomposition of hydrogen peroxide induced by polyvalent metal cation contamination, of soluble stabilizer selected from the group consisting of phenylphosphonic acids having 0 to 3 lower alkyl substituents on the phenyl group, and alkali metal and ammonium salts thereof.
Dependencies are inferred from the claim text.