CA2523365C — Antimicrobial materials comprising a silver-containing glass composition

USPTO Abstract

The invention relates to materials that are to be applied to the skin, preferred materials being polymers, cosmetics, cleaning preparations, and cloths, pads, or dressings. Polyurethanes which are preferably provided with self-adhesive properties and have an antimicrobial effect are preferred as polymers. The combination of materials, especially polymeric materials such as polyurethane, and specific silver-containing glasses provides for moist wound healing while ensuring high product stability and high stability against discoloration of the wound dressing. The antimicrobial silver-containing glasses comprise 40 to 75 mole percent of P2O5, 35 to 55 mole percent of CaO, MgO, 0 to 5 mole percent of Na2O, K2O, 5 to 20 mole percent of SiO2, Al2O5, and 0.1 to 5 mole percent of Ag2O, the percentages being relative to the glass composition.