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US 2026/0234049 A1Published application
Glass for pharmaceutical container and glass tube for pharmaceutical container
AssigneeNippon Electric Glass Co., Ltd.
InventorSatoshi ARAI
Life of this patent
Estimating the term…
Abstract
A glass for a pharmaceutical container contains, as a glass composition, in mass %, from 65% to 80% of SiO2, from 1% to 10% of Al2O3, from 5% to 20% of B2O3, more than 0% to 0.1% of MoO3, from 0% to 10% of MgO+CaO+SrO+BaO, and from 1% to 20% of Li2O+Na2O+K2O.
Claims13
1:
- A glass for a pharmaceutical container comprising, as a glass composition, in mass %, from 65% to 80% of SiO2, from 1% to 10% of Al2O3, from 5% to 20% of B2O3, more than 0% to 0.1% of MoO3, from 0% to 10% of MgO+CaO+SrO+BaO, and from 1% to 20% of Li2O+Na2O+K2O.
2:
- The glass for a pharmaceutical container according to claim 1, wherein a content of Na2O is from 5% to 9% and a content of K2O is from 0.1% to 3%.
3:
- The glass for a pharmaceutical container according to claim 2, wherein a content of CaO is from 0.1% to 2% and a content of BaO is from 0.1% to less than 1.3%.
4:
- The glass for a pharmaceutical container according to claim 2, wherein MgO+CaO+SrO+BaO is from 0.2% to 10%, and a content ratio (Li2O+Na2O+K2O)/(MgO+CaO+SrO+BaO) is from 3 to 10.
5:
- The glass for a pharmaceutical container according to claim 2, wherein a content of Fe2O3 is from 0.001% to 0.05%, a content of TiO2 is from 0.001% to 0.05%, a content ratio MoO3/(Fe2O3+TiO2) is from 0.0001 to 0.1, and a visible light transmittance at a thickness of 1 mm is 80% or more.
6:
- The glass for a pharmaceutical container according to claim 2, wherein F+Cl+Sb2O3+As2O3+SnO2+CeO2 is from 0.01% to 0.5%.
7:
- The glass for a pharmaceutical container according to claim 2, wherein Fe2O3+TiO2+MoO3+SnO2+CeO2 is 0.5% or less, and a visible light transmittance at a thickness of 1 mm is 85% or more.
8:
- The glass for a pharmaceutical container according to claim 2, wherein a content of Li2O is from 0% to 0.1%, a content of MgO is from 0% to 0.1%, a content of SrO is from 0% to 0.1%, Li2O+Na2O+K2O is from 5.1% to 12.1%, and MgO+CaO+SrO+BaO is from 0.2% to less than 2.5%.
9:
- The glass for a pharmaceutical container according to claim 2, wherein a thermal expansion coefficient at 20° C. to 300° C. is 40×10−7/° C. to 60×10−7/° C.
10:
- A glass for a pharmaceutical container, comprising, as a glass composition, in mass %, from 68% to 77% of SiO2, from 6.5% to 8% of Al2O3, from 9% to 12% of B2O3, more than 0% to 0.1% of MoO3, from 0.1% to 2% of CaO, from 0.1% to less than 1.3% of BaO, from 0.2% to less than 2.5% of MgO+CaO+SrO+BaO, from 5% to 9% of Na2O, from 0.1% to 3% of K2O, from 5.1% to 12.1% of Li2O+Na2O+K2O, from 0.001% to 0.05% of Fe2O3, from 0.001% to 0.05% of TiO2, and from 0.01% to 0.5% of F+Cl+Sb2O3+As2O3+SnO2+CeO2, wherein a content ratio MoO3/(Fe2O3+TiO2) is from 0.0001 to 0.1.
11:
- The glass for a pharmaceutical container according to claim 10, wherein a content of Cl is from 0.001% to 0.1% and a content of Sb2O3 is from 0.001% to 0.05%.
12:
- A glass tube for a pharmaceutical container, comprising, as a glass composition, in mass %, from 68% to 77% of SiO2, from 6.5% to 8% of Al2O3, from 9% to 12% of B2O3, from 0.1% to 2% of CaO, from 0.1% to less than 1.3% of BaO, more than 0% to 0.1% of MoO3, from 0.2% to less than 2.5% of MgO+CaO+SrO+BaO, from 5% to 9% of Na2O, from 0.1% to 3% of K2O, from 5.1% to 12.1% of Li2O+Na2O+K2O, from 0.001% to 0.05% of Fe2O3, from 0.001% to 0.05% of TiO2, and from 0.01% to 0.5% of F+Cl+Sb2O3+As2O3+SnO2+CeO2, wherein a content ratio MoO3/(Fe2O3+TiO2) is from 0.0001 to 0.1.
13:
- The glass tube for a pharmaceutical container according to claim 12, wherein a content of Cl is from 0.001% to 0.1% and a content of Sb2O3 is from 0.001% to 0.05%.