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Abstract

The invention comprises an antiviral film, comprising: a polyethylenimine polymer comprising: (1) repeating monomers comprising nitrogen and (2) a protonated nitrogen form of greater than ten percent of the nitrogens in a group of the repeating monomers, where the antiviral film/the polyethylenimine polymer comprises a charge exceeding 100,000 coulombs, such as where an antiviral function of the film at least meets/is in accordance with the U.S. Environmental Protection Agency's Protocol 01-1A and/or the international PAS2424 durability test. Optionally and preferably, at least one, two, or three counterions from a group of counterions of chloride, formate, acetate, citrate, and iodide are associated with the polyethylenimine polymer in any ratio.

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First Claim