Glass for pharmaceutical containers
AssigneeNippon Electric Glass Co., Ltd.
InventorsKazuyuki YAMAMOTO, Ken CHOJU
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Abstract
An object of the present invention is to provide a glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility. The glass for pharmaceutical containers of the present invention comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
Claims10
A glass for pharmaceutical containers comprising, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO.
A glass for pharmaceutical containers comprising, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, 0 to 11% of Na2O, 0 to 5% of K2O, and 0 to 10% of MgO+CaO+SrO+BaO, wherein the Li2O content is higher than the K2O content.
Dependencies are inferred from the claim text.