Method of making a powdered biocidal composition
First Claim
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1. A process for preparing a powder providing sustained release of chlorine dioxide, the process comprising:
- forming particles containing chlorite anions; and
spraying a hydrophobic material containing an acid releasing agent onto a fluidized bed of the particles so as to form a powder having a core containing the hydrophobic material and a layer of the particles containing chlorite anions on a surface of the core.
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Abstract
A biocidal powder for sustained release of chlorine dioxide includes particles containing chlorite anions, and a hydrophobic core having the particles on a surface thereof, the hydrophobic core containing an acid releasing agent. The particles and the hydrophobic core are substantially free of water, and the particles are capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.
88 Citations
16 Claims
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1. A process for preparing a powder providing sustained release of chlorine dioxide, the process comprising:
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forming particles containing chlorite anions; and spraying a hydrophobic material containing an acid releasing agent onto a fluidized bed of the particles so as to form a powder having a core containing the hydrophobic material and a layer of the particles containing chlorite anions on a surface of the core. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of retarding bacterial, fungal, and viral contamination and growth of molds on a surface and/or deodorizing the surface comprising:
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exposing the surface to a powder that does not release chlorine dioxide in the absence of moisture, the powder having a hydrophobic core containing an acid releasing agent and having chlorite anions on a surface thereof; and exposing the surface to moisture to release chlorine dioxide from the powder into the atmosphere surrounding the surface. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification