Process for producing hypophosphite compounds
AssigneeLeaRonal, Inc.
InventorsDonald W. Thomson, Luis Henry Garay, Jason D. Horowitz
Life of this patent
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Abstract
Methods for the production of nickel or ammonium hypophosphite are disclosed, including combining sodium hypophosphite with nickel or ammonium sulfate to produce sodium sulfate and nickel or ammonium hypophosphite, and lowering the temperature of the solution containing the sodium sulfate to crystallize out the sodium sulfate.
Claims9
A method for the production of nickel hypophosphite comprising combining sodium hypophosphite with nickel sulfate so as to produce sodium sulfate and said nickel hypophosphite, separating said nickel hypophosphite from said sodium sulphate, thereby providing a waste stream containing said sodium sulphate, and lowering the temperature of said waste stream containing said sodium sulfate to crystallize out said sodium sulfate and provide a filtrate stream containing nickel, sodium and hypophosphite ions.
A method for production of ammonium hypophosphite comprising combining sodium hypophosphite with ammonium sulfate so as to produce sodium sulfate and said ammonium hypophosphite, and lowering the temperature of a solution containing said sodium sulfate to crystallize out said sodium sulfate.
Dependencies are inferred from the claim text.