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US 12,358,833 B2Granted
Bioactive glass compositions
AssigneeCorning Incorporated
InventorsErin Coon, Qiang Fu, Alana Marie Whittier
Life of this patent
Estimating the term…
Abstract
A silicate-based glass composition includes: 40-60 wt. % SiO2, 0-10 wt. % B2O3, 0.01-10 wt. % P2O5, 0-10 wt. % Al2O3, 0-5 wt. % Li2O, 10-30 wt. % Na2O, 0.01-15 wt. % K2O, 0.01-5 wt. % MgO, 15-30 wt. % CaO, 15-35 wt. % MO, and 15-30 wt. % R2O, such that MO is the sum of MgO, CaO, SrO, BeO, and BaO, and R2O is the sum of Na2O, K2O, Li2O, Rb2O, and Cs2O.
Claims16
A silicate-based glass composition, comprising:
- 47.7-50.3 wt. % SiO2,
- 0-10 wt. % B2O3,
- 4.7-5.3 wt. % P2O5,
- 0-10 wt. % Al2O3,
- 0-5 wt. % Li2O,
- 12.2-18.3 wt. % Na2O,
- 4-8 wt. % K2O,
- 1.7-3.3 wt. % MgO,
- 21.5-23 wt. % CaO,
- 15-35 wt. % MO, and
- 15-30 wt. % R2O,
- wherein MO is the sum of MgO, CaO, SrO, BeO, and BaO, and
- wherein R2O is the sum of Na2O, K2O, Li2O, Rb2O, and Cs2O;
- and
- wherein a difference between a glass transition temperature (Tg) of the glass composition and an onset of crystallization temperature (Tc,o) is at least 200° C.
12 more elements
An antibacterial composition comprising:
- a silicate-based glass composition;
- and
- a culture medium having a pH in a range of 7 to 11;
- wherein the silicate-based glass composition comprises:
- 47.7-50.3 wt. % SiO2,
- 0-10 wt. % B2O3,
- 4.7-5.3 wt. % P2O5,
- 0-10 wt. % Al2O3,
- 0-5 wt. % Li2O,
- 12.2-18.3 wt. % Na2O,
- 4-8 wt. % K2O,
- 1.7-3.3 wt. % MgO,
- 21.5-23 wt. % CaO,
- 15-35 wt. % MO, and
- 15-30 wt. % R2O,
- wherein MO is the sum of MgO, CaO, SrO, BeO, and BaO, and
- wherein R2O is the sum of Na2O, K2O, Li2O, Rb2O, and Cs2O;
- and
- wherein the antimicrobial composition is colorless or essentially colorless;
- and
- wherein a difference between a glass transition temperature (Tg) of the glass composition and an onset of crystallization temperature (Tc,o) is at least 200° C.
18 more elements
Dependencies are inferred from the claim text.