Composition, use and manufacture of bioactive glass

Details Composition, use and manufacture of bioactive glass Composition, use and manufacture of bioactive glass

C - Chemistry, Metallurgy

03

C

C03C 4/00 (2006.01) A61L 27/10 (2006.01) A61L 27/30 (2006.01)

Patent

CA 2500823

The invention relates to a bioactive glass composition comprising SiO2, Na2O, CaO, K2O, MgO, P2O5 and B2O3. According to the invention, the amount of SiO2 is 51-56 wt-% of the starting oxides, Na2O is 7-9 wt-% of the starting oxides, CaO is 21-23 wt-% of the starting oxides, K2O is 10-12 wt-% of the starting oxides, MgO is 1-4 wt-% of the starting oxides, P2O5 is 0,5-1,5 wt-% of the starting oxides, B2O3 is 0-1 wt-% of the starting oxides, provided that the total amount of Na2O and K2O is 17-20 wt-% of the starting oxides. The invention further relates to the use of said bioactive glass composition and the manufacturing of said bioactive glass composition.

L'invention concerne une composition de verre bioactif qui contient: SiO¿2?, Na¿2?O, CaO, K¿2?O, MgO, P¿2?O¿5? et B¿2?O¿3?. Par rapport aux oxydes de départ, en poids, la quantité de SiO¿2? est comprise entre 51 et 56 %, la quantité de Na¿2?O est comprise entre 7 et 9 %, la quantité de CaO est comprise entre 21 et 23 %, la quantité de K¿2?O est comprise entre 10 et 12 %, la quantité de MgO est comprise entre 1 et 4 %, la quantité de P¿2?O¿5? est comprise entre 0,5 et 1,5 %, la quantité de B¿2?O¿3? est comprise entre 0 et 1 %, à condition que la quantité totale de Na¿2?O et de K¿2?O soit comprise entre 17 et 20 %, en poids, par rapport aux oxydes de départ. L'invention concerne également l'utilisation et la fabrication de cette composition.

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