| 摘要 |
A method of forming a water soluble biocidal film on a solid household, food preparation, or medical surface, which protects the solid surface against reinfection by microorganisms, includes providing a liquid biocidal composition comprised of, based on total weight of the liquid biocidal composition from 0.1 to 5.0 wt. % of a phenolic biocide; from an amount effective to impart film-forming properties to the liquid biocidal composition up to 8 wt. % of a polyvinyl pyrrolidone polymer or copolymer; and an aqueous alcoholic solvent in which the phenolic biocide and the polyvinylpyrrolidone polymer or copolymer are dissolved; treating the solid surface with the liquid biocidal composition; and evaporating the aqueous alcoholic solvent to provide a clear film, wherein a ratio of the phenolic biocide to the polyvinylpyrrolidone polymer or copolymer is selected to range from 1:0.8 to 1:3 so that a complex there between is provided which dries clear.
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