Synergistic biocidal mixtures
AssigneeHercules Incorporated
InventorsJohn M. Cronan, Jr., Michael J. Mayer
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Abstract
Synergistic mixtures of biocides and their use to control the growth of microorganisms in aqueous systems are disclosed. The method of using the synergistic mixtures entails adding an effective amount of a nitrogenous compound activated by an oxidant and at least one non-oxidizing biocide to an aqueous system. The amount of activated nitrogenous compound and non-oxidizing biocide is selected to result in a synergistic biocidal effect.
Claims29
A method for controlling the growth of microorganisms in aqueous systems comprising adding an effective amount of a nitrogenous compound activated by an oxidant and at least one non-oxidizing biocide to an aqueous system, wherein the activated nitrogenous compound comprises an activated ammonium salt selected from the group consisting of ammonium bromide, ammonium carbonate, ammonium chloride, ammonium fluoride, ammonium hydroxide, ammonium iodide, ammonium nitrate, ammonium phosphate, ammonium sulfamate and mixtures thereof, said amount of activated nitrogenous compound and non-oxidizing biocide being selected to result in a synergy index of less than 1.
Dependencies are inferred from the claim text.