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US 4,399,098 AGranted
Prevention of corrosion in aqueous solutions
AssigneeDearborn Chemical Company
InventorDionisio G. Cuisia
Life of this patent
Estimating the term…
Abstract
A method for treating water to retard corrosion due to dissolved oxygen, especially boiler feed waters and boiler water condensates, is disclosed. Semicarbazide and its salts are highly effective oxygen scavengers for use in aqueous systems and thereby effect reduction of corrosion resulting from dissolved oxygen.
Claims10
A method for control of corrosion of ferrous metal surfaces in boiler water systems caused by dissolved oxygen in the water which comprises adding to the system from 0.001 to 500 ppm of an oxygen scavenger comprising semicarbazide or a salt thereof.
Dependencies are inferred from the claim text.