Antimicrobial phosphate glass

US8080490B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

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

Key dates

• Filing date: Feb 20, 2004
• Grant date: Dec 20, 2011
• Expiry date: Aug 18, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2204/02
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to an antimicrobial phosphate glass having the following composition in percent by weight on an oxide basis: P2O5>66-80 percent by weight; SO30-40 percent by weight; B203 0-1 percent by weight; Al2O3>6.2-10 percent by weight; SiO2 0-10 percent by weight; Na2O>9-20 percent by weight; CaO 0-25 percent by weight; MgO 0-15 percent by weight; SrO 0-15 percent by weight; BaO 0-15 percent by weight; ZnO>0-25 percent by weight; Ag2O 0-5 percent by weight; CuO 0-10 percent by weight; GeO2 0-10 percent by weight; TeO2 0-15 percent by weight; Cr2O3 0-10 percent by weight; J 0-10 percent by weight; F 0-3 percent by weight.