Method of making a sustained release biocidal composition
AssigneeSouthwest Research Institute
InventorStephen T. Wellinghoff
Life of this patent
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Abstract
A process for preparing a composite for preventing the growth of bacteria, molds, fungi and viruses by dissolving a chlorite salt in a hydrophilic material, and then mixing the hydrophilic material with a hydrophobic material containing an acid releasing agent. The hydrophilic and hydrophobic materials are adjacent and substantially free of water, and the hydrophilic material is capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.
Claims32
A process for preparing a composite comprising:
- dissolving a chlorite salt in a hydrophilic material;
- and
- then mixing the hydrophilic material with a hydrophobic material containing an acid releasing agent, the hydrophilic and hydrophobic materials being adjacent and substantially free of water, the hydrophilic material being capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.
A process for preparing a composite comprising:
- dissolving a chlorite salt in a hydrophilic material containing an amine, an amide, an alcohol, or a compound containing amino, amido or hydroxyl moieties;
- and
- then mixing the hydrophilic material with a hydrophobic material containing an acid releasing agent and, optionally a diluent or a plasticizer, the hydrophilic and hydrophobic materials being adjacent and substantially free of water, the hydrophilic material being capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent, the composite comprising between about 5-95 wt. % of the hydrophilic material and about 5-95 wt. % of the hydrophobic material.
A process for preparing a composite comprising:
- dissolving a chlorite salt in a hydrophilic material containing an amine, an amide, an alcohol, or a compound containing amino, amido or hydroxyl moieties;
- and
- then mixing the hydrophilic material with a hydrophobic material containing an acid releasing agent and, optionally a diluent or a plasticizer, the hydrophilic and hydrophobic materials being adjacent and substantially free of water, the hydrophilic material being capable of releasing chlorine dioxide upon hydrolysis of the acid releasing agent.
A method of retarding bacterial, fungal, and viral contamination and growth of molds on the surface of a material and/or deodorizing the material comprising:
- exposing a surface of a material to a composite that does not release chlorine dioxide in the absence of moisture;
- and exposing the surface to moisture to release chlorine dioxide from the composite into the atmosphere surrounding the material.
A method of retarding bacterial, fungal, and viral contamination and growth of molds on a surface and/or deodorizing the surface comprising:
- coating a surface of a substrate with a composite that does not release chlorine dioxide in the absence of moisture;
- and
- exposing the coated surface to moisture to release chlorine dioxide from the composite into the atmosphere surrounding the surface.
Dependencies are inferred from the claim text.