Water-insoluble, antimicrobial silicate glass and use thereof

US7192602B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Jorg Fechner · Mainz, DE
• Jose Zimmer · Ingelheim am Rhein, DE

Key dates

• Filing date: Aug 17, 2002
• Grant date: Mar 20, 2007
• Expiry date: Dec 24, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/40
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to an antimicrobial silicate glass with the following weight composition in wt. % based on oxides: SiO2 20 to 70, Na2O 5 to 30, K2O 0 to 5, P2O5 1 to 15, B2O3 0 to 10, CaO 4 to 30, AgO 0 to 2, ZnO 0 to 8, CuO 0 to 5, MgO 0 to 8, Al2O3 0 to 7, CeO2 0 to 5, Fe2O3 0 to 2 whereby the sum of the components AgO, CuO, CeO2 is >10 ppm, preferably ≧100 ppm and <8 wt. %.