	US 12,264,099 B2
	Glass for medicine container, and medicine container glass tube and medicine container using same
Satoshi Arai, Shiga (JP); and Masato Kakuma, Shiga (JP)
Assigned to NIPPON ELECTRIC GLASS CO., LTD., Shiga (JP)
Appl. No. 17/294,140
Filed by Nippon Electric Glass Co., Ltd., Shiga (JP)
PCT Filed Dec. 24, 2019, PCT No. PCT/JP2019/050572 § 371(c)(1), (2) Date May 14, 2021, PCT Pub. No. WO2020/138063, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-244220 (JP), filed on Dec. 27, 2018; and application No. 2019-142104 (JP), filed on Aug. 1, 2019.
Prior Publication US 2021/0371324 A1, Dec. 2, 2021
Int. Cl. C03C 3/093 (2006.01); A61J 1/06 (2006.01); A61J 1/14 (2023.01); B65D 1/02 (2006.01); C03C 3/087 (2006.01); C03C 4/20 (2006.01)

CPC C03C 3/093 (2013.01) [A61J 1/065 (2013.01); A61J 1/1468 (2015.05); B65D 1/0207 (2013.01); C03C 3/087 (2013.01); C03C 4/20 (2013.01); C03C 2204/00 (2013.01)]

19 Claims

1. A glass for a pharmaceutical container, which comprises as a glass composition, in terms of mol %, 69% to 81% of SiO₂, 4% to 12% of Al₂O₃, 0% to 5% of B₂O₃, 5% to 20% of Li₂O+Na₂O+K₂O, 0% to 12% of Li₂O, 0% to 11% of Na₂O, 0.01% to 7.2% of MgO+CaO+SrO+BaO, and 0.01% to 7% of CaO, which satisfies the following relationship: a molar ratio MgO/CaO<1.0, and which has a working point of 1,270° C. or less.