NOVEL BIOACTIVE GLASSES AND THEIR USE

摘要

PCT No. PCT/FI96/00001 Sec. 371 Date Jul. 11, 1997 Sec. 102(e) Date Jul. 11, 1997 PCT Filed Jan. 2, 1996 PCT Pub. No. WO96/21628 PCT Pub. Date Jul. 18, 1996The 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: SiO2 53-60 wt. %; Na2O 0-34 wt. %; K2O 1-20 wt. %; MgO 0-5 wt. %; CaO 5-25 wt. %; B2O3 0-4 wt. %; P2O5 0.5-6 wt. %; provided that Na2O+K2O=16-35 wt. %; K2O+MgO=5-20 wt. % and MgO+CaO=10-25 wt. %.