Antimicrobial alkali-silicate glass ceramic and the use thereof

Details Antimicrobial alkali-silicate glass ceramic and the use thereof Antimicrobial alkali-silicate glass ceramic and the use thereof

2006-11-28

2006-11-28

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

C424S059000, C424S602000, C424S722000, C424S744000

Reexamination Certificate

active

07141520

ABSTRACT:
The invention relates to a glass ceramic, wherein the initial glass comprises 30–65 percent (by weight) SiO2; 5–30 percent (by weight) Na2O; 5–30 percent (by weight) CaO, and 0-15 percent (by weight) P2O5, and wherein the main crystalline phases comprise alkali—alkaline earth—silicate and/or alkali silicate and/or alkaline earth silicate. The invention is characterized in that either a glass ceramic with a single crystalline phase 1 Na2O—2CaO—3 SiO2is excluded, or the crystalline size of the glass ceramic is <10 μm, or the weight fraction of SiO2is <47%.

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