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AssigneeLee County Mosquito Control District
InventorRichard Levy
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Controlled release compositions of matter are disclosed comprising complexes for treating a population of one or more aquatic organisms in a column of water. The complexes comprise at least one system wherein the system comprises at least one bioactive agent as a component selected for treating a population of aquatic organisms, at least one carrier component, and at least one coating component for regulating the controlled release rate and release profile of the bioactive agent in water or at least one bioactive agent and one joint-function component that can serve as both a carrier and coating to regulate the controlled release rate and release profile of the bioactive agent in water, with or without optional binder components and/or additional formulation materials. The components are selected to sink or float so that the complexes will permeate and/or remain in any planar or volumetric segment of a water column for a period of time that is sufficient to effectively treat a population of aquatic organisms. Methods for treating a column of water are also disclosed which comprises delivering the compositions to a column of water or to a dry preflood area (pretreatment) that will develop in a column of water or a flood area. The composition and process can also be used to treat terrestrial organisms.
A composition of matter consisting essentially of a complex for treating a population of one or more aquatic organisms, said complex consisting essentially of at least one controlled delivery system, said controlled delivery system consisting essentially of from about 50% to about 99% by weight of at least one carrier component, from about 0.0001% to about 50% by weight of at least one bioactive agent as a component selected for treating a population of one or more aquatic organisms, from about 1.0% to about 50% by weight of at least one coating component for regulating the controlled release rate and release profile of said bioactive agent, wherein said coating is water soluble or biodegradable or erodible, said components being selected so that said complex will remain in an application site for a period of time sufficient to effectively treat a population of one or more of said organisms, said coating component consisting essentially of water soluble organic polymers, wherein said water soluble organic polymers are polyvinyl alcohol, polyethylene oxide hydroxypropyl methyl cellulose or methyl cellulose, fatty alcohols, fatty acids, and esters thereof, or phthalyl esters, and wherein said composition is free of superabsorbent polymers.
A composition of matter consisting essentially of a complex for treating a population of one or more aquatic organisms in a column of water, said complex consisting essentially of at least one controlled delivery system, said controlled delivery system consisting essentially of from about 50% to about 99% by weight of at least one carrier component, from at about 0.0001% to about 50% by weight of at least one bioactive agent as a component selected for treating a population of one or more aquatic organisms, and from about 1.0% to about 50% by weight of at least one coating component for regulating the controlled release rate and release profile of said bioactive agent in water, wherein said coating is water soluble or biodegradable or erodible, said components being selected so that said complex will remain in an application site for a period of time sufficient to effectively treat a population of one or more of said organisms, said coating component consisting essentially of water soluble organic polymers, wherein said water soluble organic polymers are polyvinyl alcohol, polyethylene oxide, hydroxy propyl methyl cellulose or methyl cellulose, fatty alcohols, fatty acids and esters thereof, or phthalyl esters, said components, also being selected to sink or float so that said complex will permeate and remain in any planar or volumetric segment between the top and bottom of a water column for a period of time sufficient to effectively treat a population of one or more aquatic organisms, and wherein said composition is free of superabsorbent polymers.
Dependencies are inferred from the claim text.