Antimicrobial glass compositions, glasses and polymeric articles incorporating the same
US9622483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2015 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Feb 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2204/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Embodiments of the present invention pertain to antimicrobial glass compositions, glasses and articles. The articles include a glass, which may include a glass phase and a cuprite phase. In other embodiments, the glasses include as plurality of Cu1+ ions, a degradable phase including B2O3, P2O5 and K2O and a durable phase including SiO2. Other embodiments include glasses having a plurality of Cu1+ ions disposed on the surface of the glass and in the glass network and/or the glass matrix. The article may also include a polymer. The glasses and articles disclosed herein exhibit a 2 log reduction or greater in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, Pseudomonas aeruginosa bacteria, Methicillin Resistant Staphylococcus aureus, and E. coli, under the EPA Test Method for Efficacy of Copper Alloy as a Sanitizer testing conditions and under Modified JIS Z 2801 for Bacteria testing conditions. In some embodiments, the glass and articles exhibit a 2 log reduction or greater in a concentration of Murine Norovirus under Modified JIS Z 2801 Test for Viruses testing conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.