Reactive surface coating having chemical decontamination and biocidal properties

A method of providing a renewable reactive film coating, having biocidal and chemical deactivation properties against biological and chemical warfare agents, to the surface of an object or article, consisting of the steps of:

• a. providing a solution consisting of i) a non-cross-linked, water soluble polyvinylpyrrolidone dissolved in water, or ii) a non-crosslinked, water soluble polyvinylpyrrolidone dissolved in water and methanol, wherein the polyvinylpyrrolidone has a molecular weight of 10K, 58K, 360K or 1300K and is present in an amount ranging from about 1 to about 10 wt. %, based on the total weight of the renewable reactive film coating;
• b. mixing the polyvinylpyrrolidone solution with an active consisting of aqueous solution of hydrogen peroxide to form a mixture, wherein the aqueous hydrogen peroxide solution is a 10 wt. % or 20 wt. % solution;
• c. applying the mixture to the surface of the object or article;
• d. drying the mixture in air to form a film;
• and,
• e. renewing the biocidal and chemical decontamination properties of the film, after fouling, or exhaustion or decay of the hydrogen peroxide active due to contact with biological or chemical warfare agents, by exposing the film to vaporized hydrogen peroxide of at least about 400 ppm for at least 30 minutes.

A method of providing a renewable reactive film coating, having biocidal and chemical deactivation properties against biological and chemical warfare agents, to the surface of an object or article, consisting of the steps of:

• a. providing a solution consisting of i) a non-cross-linked, water soluble polyvinylpyrrolidone dissolved in water, or ii) a non-crosslinked, water soluble polyvinylpyrrolidone dissolved in water and methanol, wherein the polyvinylpyrrolidone has a molecular weight of 10K, 58K, 360K or 1300K and is present in an amount ranging from about 1 to about 10 wt. %, based on the total weight of the renewable reactive film coating;
• b. mixing the polyvinylpyrrolidone solution with an active consisting of peracetic acid or iodine to form a mixture, wherein the active is present in an amount ranging from about 1 to about 10 wt. %, based on the total weight of the renewable reactive film coating;
• c. applying the mixture to the surface of the object or article;
• d. drying the mixture in air to form a film;
• and,
• e. renewing the biocidal and chemical decontamination properties of the film, after fouling, or exhaustion or decay of the active due to contact with biological or chemical warfare agents, by exposing the film to additional amounts of the active.

A method for providing a renewable reactive film coating, having biocidal and chemical decontamination properties against biological and chemical warfare agents, to a surface of an object or article, consisting of the steps of:

• a. applying a hygroscopic polymer solution to the surface of the object or article,
• wherein the polymer consists of non-cross-linked, water soluble polyvinylpyrrolidone, dissolved in (i) water or (ii) water and methanol to form a solution, wherein the polyvinylpyrrolidone has a molecular weight of 10K, 58K, 360K or 1300K and is present in an amount ranging from about 1 to about 10 wt. %, based on the total weight of the renewable reactive film coating;
• b. processing the polymer solution to form a film;
• c. exposing the film to an initial charge of an active consisting of chlorine gas;
• d. air drying the film;
• and
• e. renewing the biocidal and chemical decontamination properties of the film, after fouling, or exhaustion or decay of the active due to contact with biological or chemical warfare agents, by exposing the film to additional amounts of chlorine gas.