PROCESS OF ACTIVATION OF METAL SILVER

摘要

The present invention relates to a process for surface antibacterial activation of metal silver comprising the following steps: a) oxidative aggression in an acid aqueous environment of a portion of the surface of the metal silver with formation of silver ions; b) raising the pH value and adjusting the redox potential of the material in the suspension obtained in step a); c) fixing the silver ions in the form of insoluble or slightly soluble, inorganic and organic salts on the surface of the metal silver as treated in step a) by the addition of a precipitating reagent corresponding to the insoluble or slightly soluble, inorganic or organic silver salt of interest; d) drying the metal silver coated by salified ions as obtained in step c); e) further optional step of partial chemical reduction of the salified silver ions present on the surface of the metal silver.