Bioactive glasses and their use
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United States of America Patent
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Apr 25, 2000
Grant Date -
N/A
app pub date -
Jul 11, 1997
filing date -
Jan 13, 1995
priority date (Note) -
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Abstract
The invention relates to a bioactive glass having a suitable working range for glass processing. Said bioactive glass comprises oxides of silicon, phosphorus, alkalis, alkaline earths and optionally other elements such as boron. According to the invention said oxides are present in the following amounts: SiO.sub.2 53-60 wt. %; Na.sub.2 O 0-34 wt. %; K.sub.2 O 1-20 wt. %; MgO 0-5 wt. %; CaO 5-25 wt. %; B.sub.2 O.sub.3 0-4 wt. %; P.sub.2 O.sub.5 0.5-6 wt. %; provided that Na.sub.2 O+K.sub.2 O=16-35 wt. %; K.sub.2 O+MgO=5-20 wt. % and MgO+CaO=10-25 wt. %.
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