Methods of using hop acids to control organisms
AssigneeHercules Incorporated
InventorsAlexander W. Breen, John M. Cronan, Jr., Phillip S. Davis, Michael J. Mayer, Freddie L. Singleton
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Abstract
Methods of inhibiting the growth of organisms in aqueous systems such as papermaking systems, cooling systems and process waters of various types, comprises adding to the aqueous system a hop acid. Compositions comprising hop acids and papermaking suspensions or slurries, and/or additives, such as paper making additives, are also provided.
Claims37
A method of inhibiting the growth of organisms in an aqueous system selected from a papermaking system, a cooling system or a process water which process water does not contact a final product, wherein the organisms comprise at least one Gram negative bacteria which cause biofouling in said system, comprising adding to the aqueous system an effective amount of one or more hop acids at a pH of at least about 5.5, to inhibit the growth of said organisms in said system.
A method of inhibiting the growth of organisms in an aqueous system selected from cooling water systems;
- aqueous systems used in humidifiers;
- aqueous systems used in heating, ventilating and air conditioning systems;
- swimming pool water;
- water used in spas;
- metal working fluids;
- petroleum production fluids;
- paint formulation;
- plastics processing systems;
- and mixtures of the foregoing;
- wherein the organisms comprise at least one Gram negative bacteria which cause biofouling in said system;
- comprising adding to the aqueous system an effective amount of a hop acid at a pH of at least about 5.5, to inhibit the growth of said organisms in said system.
Dependencies are inferred from the claim text.