Chemically durable aluminosilicate glass compositions and glass articles formed therefrom

Abstract

A glass composition includes from 69 mol% to 80.5 mol% SiO2; from 2.1 mol% and less to 5.8 mol% Al2O3; from 0 mol% to 0.9 mol% B2O3; from 0.1 mol% to 11.5 mol% Na2O; from 0 mol% to 11.4 mol% K2O; from 0 mol% to 3.9 mol% Li2O; from 0 mol% to 0.75 mol% ZnO; from 0 mol% to 15 mol% MgO; from 0.3 mol% to 15 mol% CaO; from 0 mol% to 0.75 mol% SrO; from 0 mol% to 0.75 mol% BaO; and from 0 mol% to 5 mol% ZrO2. Na2O + K2O is from 0.5 mol% to 11.5 mol%. Na2O / (Na2O + K2O) is from 0 to 0.9. CaO + MgO is from 1 mol% to 10.75 mol%. SrO + ZnO + BaO is from 0 mol% to 0.75 mol%.

Description

SP24-232CHEMICALLY DURABLE ALUMINOSILICATE GLASS COMPOSITIONS AND GLASS ARTICLES FORMED THEREFROMCROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application Serial No. 63 / 689,251 filed on August 30, 2024, the content of which is relied upon and incorporated herein by reference in its entirety.Field

[0002] The present specification generally relates to aluminosilicate glass compositions and, in particular, to chemically durable aluminosilicate glass compositions and glass articles formed therefrom.Technical Background

[0003] Historically, glass has been used as the preferred material for packaging pharmaceuticals because of its hermeticity, optical clarity, and excellent chemical durability relative to other materials. Specifically, the glass used in pharmaceutical packaging must have adequate chemical durability (e.g., base resistance greater than -175 mg / dm2, as measured according to ISO 695) so as not to affect the stability of the pharmaceutical composition contained therein. Glasses having suitable chemical durability include alumino-borosilicate glasses.

[0004] It has been found that alumino-borosilicate glass having a relatively high concentration of (e.g., about 10 mol% B2O3) may demonstrate a propensity for delamination. While using an aluminosilicate glass lacking B2O3 may reduce or eliminate delamination, an ion exchange process may need to be completed such that the aluminosilicate glass meets chemical durability requirements, which complicates manufacturing.

[0005] Accordingly, a need exists for glass compositions which exhibit chemical durability for use in pharmaceutical packaging.SUMMARY

[0006] According to a first aspect Al, a glass composition comprises: greater than or equal to 69 mol% and less than or equal 80.5 mol% SiCh; greater than or equal to 2.1 mol% and less than orSP24-232 equal to 5.8 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.5 mol% Na20; greater than or equal to 0 mol% and less than or equal to 11.4 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.9 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.3 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh, wherein Na2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0007] A second aspect A2 includes the glass composition of the first aspect Al, wherein the glass composition is free or substantially free of B2O3.

[0008] A third aspect A3 includes the glass composition of the first aspect Al or the second aspect A2, wherein the glass composition comprises greater than or equal to 2.3 mol% and less than or equal to 5.0 mol% AI2O3.

[0009] A fourth aspect A4 includes the glass composition of any one of the first through third aspects A1-A3, wherein the glass composition comprises greater than or equal to 75 mol% and less than or equal to 80 mol% SiCh.

[0010] A fifth aspect A5 includes the glass composition of any one of the first through fourth aspects A1-A4, wherein Na2O + K2O is greater than or equal to 3 mol% and less than or equal to 10 mol%.

[0011] A sixth aspect A6 includes the glass composition of any one of the first through fifth aspects A1-A5, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.SP24-232

[0012] A seventh aspect A7 includes the glass composition of any one of the first through sixth aspects A1-A6, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% Na2O.

[0013] An eighth aspect A8 includes the glass composition of any one of the first through seventh aspects A1-A7, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.

[0014] A ninth aspect A9 includes the glass composition of any one of the first through eighth aspects A1-A8, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

[0015] A tenth aspect A10 includes the glass composition of any one of the first through ninth aspects A1-A9, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.

[0016] An eleventh aspect Al 1 includes the glass composition of any one of the first through tenth aspects A1-A10, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.

[0017] A twelfth aspect Al 2 includes the glass composition of any one of the first through eleventh aspects Al -Al l, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 7 mol% CaO.

[0018] A thirteenth aspect Al 3 includes the glass composition of any one of the first through twelfth aspects Al -Al 2, wherein the glass composition comprises greater than 0 mol% and less than or equal to 3 mol% ZrO2.

[0019] A fourteenth aspect Al 4 includes the glass composition of any one of the first through thirteenth aspects Al -Al 3, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiCh.

[0020] A fifteenth aspect Al 5 includes the glass composition of any one of the first through fourteenth aspects A1-A14, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% Y2O3.SP24-232

[0021] A sixteenth aspect Al 6 includes the glass composition of any one of the first through fifteenth aspects Al -Al 5, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% La2Os.

[0022] A seventeenth aspect Al 7 includes the glass composition of any one of the first through sixteenth aspects Al -Al 6, wherein the glass composition comprises greater than 0 mol% and less than or equal to 10 mol% CeCh.

[0023] An eighteenth aspect Al 8 includes the glass composition of any one of the first through seventeenth aspects A1-A17, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

[0024] According to a nineteenth aspect Al 9, a glass article includes the glass composition of any one of the first through eighteenth aspects Al -Al 8.

[0025] A twentieth aspect A20 includes the glass article of the nineteenth aspect Al 9, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

[0026] A twenty-first aspect A21 includes the glass article of the nineteenth aspect Al 9 of the twentieth aspect A20, wherein the glass article is a pharmaceutical package.

[0027] According to a twenty-second aspect A22, a glass composition comprises: greater than or equal to 67 mol% and less than or equal 80.2 mol% SiO2; greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.75 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.65 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 1.6 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh; greater than or equal to 0 mol% and less than or equal to 10 mol% TiCh; and greater than or equal to 0 mol% and less than or equal to 0.1 mol% PbO, wherein Na2O + K2O is greaterSP24-232 than or equal to 0.5 mol% and less than or equal to 11.75 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1.8 mol% and less than or equal to 10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0028] A twenty-third aspect A23 includes the glass composition of the twenty-second aspect A22, wherein the glass composition is free or substantially free of B2O3.

[0029] A twenty-fourth aspect A24 includes the glass composition of the twenty-second aspect A22 or the twenty-third aspect A23, wherein the glass composition comprises greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3.

[0030] A twenty-fifth aspect A25 includes the glass composition of any one of the twenty-second through twenty-fourth aspects A22-A24, wherein the glass composition comprises greater than or equal to 75 mol% and less than or equal to 80 mol% SiC>2.

[0031] A twenty-sixth aspect A26 includes the glass composition of any one of the twenty-second through twenty-fifth aspects A22-A25, wherein Na2O + K2O is greater than or equal to 3 mol% and less than or equal to 11 mol%.

[0032] A twenty-seventh aspect A27 includes the glass composition of any one of the twenty- second through twenty-sixth aspects A22-A26, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.

[0033] A twenty-eighth aspect A28 includes the glass composition of any one of the twenty- second through twenty-seventh aspects A22-A27, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% Na2O.

[0034] A twenty-ninth aspect A29 includes the glass composition of any one of the twenty-second through twenty-eighth aspects A22-A28, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.SP24-232

[0035] A thirtieth aspect A30 includes the glass composition of any one of the twenty-second through twenty-ninth aspects A22-A29, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

[0036] A thirty-first aspect A31 includes the glass composition of any one of the twenty-second through thirtieth aspects A22-A30, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.

[0037] A thirty-second aspect A32 includes the glass composition of any one of the twenty- second through thirty-first aspects A22-A31, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.

[0038] A thirty -third aspect A33 includes the glass composition of any one of the twenty-second through thirty-second aspects A22-A32, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 7 mol% CaO.

[0039] A thirty-fourth aspect A34 includes the glass composition of any one of the twenty-second through thirty-third aspects A22-A33, wherein the glass composition comprises greater than 0 mol% and less than or equal to 4 mol% ZrO2.

[0040] A thirty-fifth aspect A35 includes the glass composition of any one of the twenty-second through thirty-fourth aspects A22-A34, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiCh.

[0041] A thirty-sixth aspect A36 includes the glass composition of any one of the twenty-second through thirty-fifth aspects A22-A35, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% Y2O3.

[0042] A thirty-seventh aspect A37 includes the glass composition of any one of the twenty- second through thirty-sixth aspects A22-A36, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% La2Os.

[0043] A thirty-eighth aspect A38 includes the glass composition of any one of the twenty-second through thirty-seventh aspects A22-A37, wherein the glass composition comprises greater than 0 mol% and less than or equal to 10 mol% CeCh.SP24-232

[0044] A thirty-ninth aspect A39 includes the glass composition of any one of the twenty-second through thirty-eighth aspects A22-A38, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

[0045] According to a fortieth aspect A40, a glass article includes the glass composition of any one of the twenty-second through thirty-ninth aspects A22-A39.

[0046] A forty-first aspect A41 includes the glass article of the fortieth aspect A40, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

[0047] A forty-second aspect A42 includes the glass article of the fortieth aspect A40 or the forty- first aspect A41, wherein the glass article is a pharmaceutical package.

[0048] According to a forty-third aspect A43, a glass composition comprises: greater than or equal to 67 mol% and less than or equal 85 mol% SiO2; greater than or equal to 0.1 mol% and less than or equal to 7.4 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 7 mol% B2O3; greater than or equal to 2.1 mol% and less than or equal to 12 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 9.9 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.75 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrCh, wherein Na2O + K2O is greater than or equal to 2.1 mol% and less than or equal to 12 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0049] A forty-fourth aspect A44 includes the glass composition of the forty -third aspect A43, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% B2O3.SP24-232

[0050] A forty-fifth aspect A45 includes the glass composition of the forty-third aspect A43 or the forty-fourth aspect A44, wherein the glass composition comprises greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3.

[0051] A forty-sixth aspect A46 includes the glass composition of any one of the forty-third through forty-fifth aspects A43-A45, wherein the glass composition comprises greater than or equal to 73 mol% and less than or equal to 81 mol% SiCh.

[0052] A forty-seventh aspect A47 includes the glass composition of any one of the forty-third through forty-sixth aspects A43-A46, wherein Na2O + K2O is greater than or equal to 5 mol% and less than or equal to 11 mol%.

[0053] A forty-eighth aspect A48 includes the glass composition of any one of the forty-third through forty-seventh aspects A43-A47, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.

[0054] A forty-ninth aspect A49 includes the glass composition of any one of the forty-third through forty-eighth aspects A43-A48, wherein the glass composition comprises greater than or equal to 3 mol% and less than or equal to 10 mol% Na2O.

[0055] A fiftieth aspect A50 includes the glass composition of any one of the forty-third through forty-ninth aspects A43-A49, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.

[0056] A fifty-first aspect A51 includes the glass composition of any one of the forty -third through fiftieth aspects A43-A50, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

[0057] A fifty-second aspect A52 includes the glass composition of any one of the forty-third through fifty-first aspects A43-A51, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.

[0058] A fifty -third aspect A53 includes the glass composition of any one of the forty -third through fifty-second aspects A43-A52, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.SP24-232

[0059] A fifty-fourth aspect A54 includes the glass composition of any one of the forty-third through fifty-third aspects A43-A53, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 10 mol% CaO.

[0060] A fifty-fifth aspect A55 includes the glass composition of any one of the forty-third through fifty-fourth aspects A43-A54, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 4 mol% ZrCh.

[0061] A fifty-sixth aspect A56 includes the glass composition of any one of the forty-third through fifty-fifth aspects A43-A55, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiCh.

[0062] A fifty-seventh aspect A57 includes the glass composition of any one of the forty -third through fifty-sixth aspects A43-A56, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

[0063] According to a fifty-eighth aspect A58, a glass article comprises the glass composition of any one of the forty-third through fifty-seventh aspects A43-A57.

[0064] A fifty-ninth A59 aspect includes the glass article of the fifty-eight aspect A58, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

[0065] A sixtieth aspect A60 includes the glass article of the fifty-eighth aspect A58 or the fiftyninth aspect A59, the glass article is a pharmaceutical package.

[0066] Additional features and advantages of the glass compositions described herein will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the examples, and the claims.

[0067] It is to be understood that both the foregoing general description and the following detailed description describe various embodiments and are intended to provide an overview or framework for understanding the nature and character of the claimed subject matter.SP24-232DETAILED DESCRIPTION

[0068] Reference will now be made in detail to various embodiments of aluminosilicate glass compositions that are chemically durable.

[0069] According to embodiments, a glass composition may comprise greater than or equal to 69 mol% and less than or equal 80.5 mol% SiO2; greater than or equal to 2.1 mol% and less than or equal to 5.8 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.5 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.4 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.9 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.3 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh. Na2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%. Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9. CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%. SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%. A total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0070] According to embodiments, a glass composition may comprise greater than or equal to 67 mol% and less than or equal 80.2 mol% SiCh; greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.75 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.65 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 1.6 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; greater than or equal to 0 mol% and less than or equal to 5 mol% ZrO2; greater than or equal to 0 mol% and less than or equal to 10 mol% TiO2; and greater than or equal to 0 mol% and less than or equal to 0.1 mol% PbO. Na2O + K2O is greater than or equal to 0.5 mol% andSP24-232 less than or equal to 11.75 mol%. Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9. CaO + MgO is greater than or equal to 1.8 mol% and less than or equal to 10.75 mol%. SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%. A total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0071] According to embodiments, a glass composition may comprise greater than or equal to 67 mol% and less than or equal 85 mol% SiCh; greater than or equal to 0.1 mol% and less than or equal to 7.4 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 7 mol% B2O3; greater than or equal to 2.1 mol% and less than or equal to 12 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 9.9 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.75 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrO2. Na2O + K2O is greater than or equal to 2.1 mol% and less than or equal to 12 mol%. Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9. CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%. SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%. A total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0072] Various embodiments of glass compositions and glass articles formed therefrom will be described herein.

[0073] Ranges may be expressed herein as from “about” one particular value, and / or to “about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and / or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint.SP24-232

[0074] Directional terms as used herein - for example up, down, right, left, front, back, top, bottom - are made only with reference to the figures as drawn and are not intended to imply absolute orientation.

[0075] Unless otherwise expressly stated, it is in no way intended that any method set forth herein be construed as requiring that its steps be performed in a specific order, nor that with any apparatus specific orientations be required. Accordingly, where a method claim does not actually recite an order to be followed by its steps, or that any apparatus claim does not actually recite an order or orientation to individual components, or it is not otherwise specifically stated in the claims or description that the steps are to be limited to a specific order, or that a specific order or orientation to components of an apparatus is not recited, it is in no way intended that an order or orientation be inferred, in any respect. This holds for any possible non-express basis for interpretation, including: matters of logic with respect to arrangement of steps, operational flow, order of components, or orientation of components; plain meaning derived from grammatical organization or punctuation, and; the number or type of embodiments described in the specification.

[0076] As used herein, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a” component includes aspects having two or more such components, unless the context clearly indicates otherwise.

[0077] In the embodiments of the glass compositions and resultant glass articles described herein, the concentrations of constituent components (i.e., SiCh, AI2O3, and the like) are specified in mole percent (mol%) on an oxide basis, unless otherwise specified. A total sum of concentrations of oxide components in the glass composition and the resultant glass article is equal to 100 mol%.

[0078] The term “substantially free,” when used to describe the concentration and / or absence of a particular constituent component in a glass composition and the resultant glass article, means that the constituent component is not intentionally added to the glass composition and the resultant glass article. However, the glass composition and the resultant glass article may contain traces of the constituent component as a contaminant or tramp in amounts of less than 0.05 weight percent (wt%). As noted herein, the remainder of the application specifies the concentrations of constituent component in mol%. The contaminant or tramp amounts of the constituent componentsSP24-232 are listed in wt% for manufacturing purposes and one skilled in the art would understand the contaminant and tramp amounts being listed in wt%.

[0079] The terms “0 mol%” and “free,” when used to describe the concentration and / or absence of a particular constituent component in a glass composition and the resultant glass article, means that the constituent component is not present in glass composition and the resultant glass article.

[0080] The term “chemical durability,” as used herein, refers to the ability of a glass article to resist degradation upon exposure to specified chemical conditions. Specifically, the chemical durability of a glass article may be assessed according to established material testing standards.

[0081] ‘ TSO691:1991 entitled ‘Glass - Resistance to attack by a boiling aqueous solution of mixed alkali - Method of test and classification’” (hereinafter “ISO 695 standard” or “ISO 695”), as used herein, is a measure of the resistance of the glass to decomposition when placed in a basic solution. In brief, the ISO 695 standard utilizes a polished glass sample which is weighed and then placed in a solution of boiling NaOH and ISfeCOs. The sample is then removed from the solution, dried and weighed again. The glass mass lost during exposure to the basic solution is a measure of the base durability of the sample with smaller numbers indicative of greater durability. The results of the ISO 695 standard are reported in units of mass per surface area, specifically mg / dm2The ISO 695 standard is divided into individual classes. Class Al indicates weight losses of up to 75 mg / dm2; Class A2 indicates weight losses from 75 mg / dm2up to 175 mg / dm2; and Class A3 indicates weight losses of more than 175 mg / dm2.

[0082] ‘ TSO 720: 1985 entitled ‘Glass - Hydrolytic resistance of glass grains at 121 degrees C. - Method of test and classification’” (hereinafter “the ISO 720 standard” or “ISO 720”), as used herein, is a measure of the resistance of the glass to degradation in purified, CO2-free water. In brief, the ISO 720 standard protocol utilizes crushed glass grains which are placed in contact with the purified, CO2-free water at 121° C and a pressure of 2 atmospheres. The solution is then titrated colorimetrically with dilute HC1 to neutral pH. The amount of HC1 required to titrate to a neutral solution is then converted to an equivalent of Na2O extracted from the glass and reported in pg Na2O per weight of glass with smaller values indicative of greater durability. The ISO 720 standard is divided into individual types. Type HGA1 is indicative of up to 62 pg extracted equivalent of Na2O per gram of glass tested; Type HGA2 is indicative of more than 62 pg and up to 527 pgSP24-232 extracted equivalent of Na20 per gram of glass tested; and Type HGA3 is indicative of more than 527 pg and up to 930 pg extracted equivalent of Na2O per gram of glass tested.

[0083] “DIN 12116 dated March 2001 and entitled ‘Testing of glass - Resistance to attack by a boiling aqueous solution of hydrochloric acid - Method test and classification’” (hereinafter “the DIN 12116 standard” or “DIN 12116), as used herein, is a measure of the resistance of the glass to decomposition when placed in an acidic solution. In brief, the DIN 12116 standard utilizes a polished glass sample of a known surface area which is weighed and then positioned in contact with boiling hydrochloric acid. The sample is then removed from the solution, dried and weighed again. The glass mass lost during exposure to the acidic solution is a measure of the acid durability of the sample with smaller numbers indicative of greater durability. The results of the test are reported in units of half-mass per surface area, specifically mg / dm2The DIN 12116 standard is divided into individual classes. Class SI indicates weight losses of up to 0.7 mg / dm2; Class S2 indicates weight losses from 0.7 mg / dm2up to 1.5 mg / dm2; Class S3 indicates weight losses from 1.5 mg / dm2up to 15 mg / dm2; and Class S4 indicates weight losses of more than 15 mg / dm2.

[0084] The term “strain point,” as used herein, refers to the temperature at which the viscosity of the glass composition is 3x1014poise.

[0085] The terms “annealing point” or “anneal point,” as used herein, refer to the temperature at which the viscosity of the glass composition is IxlO13poise.

[0086] The term “softening point,” as used herein, refers to the temperature at which the viscosity of the glass composition is 1x1076poise.

[0087] The term “CTE,” as used herein, refers to the coefficient of thermal expansion for the glass composition over a temperature range from about 20 °C to about 300 °C.

[0088] Density, as described herein, is measured by the buoyancy method of ASTM C693-93.

[0089] “Liquidus temperature,” as used herein, refers to the maximum temperature at which crystals can co-exist with molten glass in the glass melt in thermodynamic equilibrium, as measured with the gradient furnace method according to ASTM C829-81.SP24-232

[0090] “Liquidus viscosity,” as used herein, refers to the viscosity of the glass composition at the onset of devitrification, as measured with the gradient furnace method according to ASTM C829- 81.

[0091] The term “Vogel-Fulcher-Tamman (‘VFT’) relation,” as used herein, describes the temperature dependence of the viscosity and is represented by the following equation:where F[ is viscosity. To determine VFT A, VFT B, and VFT To, the viscosity of the glass composition is measured over a given temperature range. The raw data of viscosity versus temperature is then fit with the VFT equation by least-squares fitting to obtain A, B, and To. With these values, a viscosity point (e.g., 200 P Temperature (T200) and 700 P Temperature (T700)) at any temperature above softening point may be calculated.

[0092] The terms “200 P Temperature” or “T200,”, as used herein, refer to the temperature at which the glass article has a viscosity of 200 Poise (P).

[0093] The terms “700 P Temperature” and “T700,” as used herein, refer to the temperature at which the glass article has a viscosity of 700 P.

[0094] The term “low B2O3 embodiments,” as used herein, refers to embodiments that comprise, among other things, greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3. The term “low AI2O3 embodiments,” as used herein, refers to embodiments that comprise, among other things, greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3. The term “ZrCh embodiments,” as used herein, refers to embodiments that comprise, among other things, greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrCh. Specific embodiments (i.e., low B2O3 embodiments, low AI2O3 embodiments, and ZrCh embodiments) may be referred to throughout the present disclosure. When a specific embodiment is not identified, the feature may be applicable to any embodiments described herein.

[0095] As described herein, glasses having suitable chemical durability (e.g., base resistance greater than -175 mg / dm2, as measured according to ISO 695) for pharmaceutical packagingSP24-232 include alumino-borosilicate glasses. However, it has been found that alumino-borosilicate glass having a relatively high concentration of (e.g., about 10 mol% B2O3) may demonstrate a propensity for delamination. While using an aluminosilicate glass lacking B2O3 may reduce or eliminate delamination, an ion exchange process may need to be completed such that the aluminosilicate glass meets chemical durability requirements, which complicates manufacturing.

[0096] Disclosed herein are glass compositions which mitigate the aforementioned problems. Specifically, the glass compositions disclosed herein comprise relatively low concentrations of B2O3 and AI2O3 and a relatively high concentration of SiCh, which results in glass articles having sufficient chemical durability (e.g., greater than -175 mg / dm2, as measured according to ISO 695) such that the glass compositions may be used in pharmaceutical packaging.

[0097] The glass compositions described herein may be described as aluminosilicate glass compositions and comprise SiO2 and AI2O3. The glass compositions may optionally include B2O3 to help to achieve sufficient chemical durability. The glass compositions described herein also include alkali oxides, such as Na2O and K2O, to improve meltability. The glass compositions described herein also include alkaline earth oxides, such as CaO, MgO, SrO, ZnO, and BaO, to help achieve sufficient chemical durability and improve meltability.

[0098] SiC>2 is the primary glass former in the glass composition described herein and may function to stabilize the network structure of the glass. The concentration of SiCh in the glass composition should be sufficiently high to provide basic glass forming capability and chemical durability. The amount of SiCh may be limited to control the melting point of the glass composition and, thus, may aid in improving the meltability and the formability of the resulting glass article.

[0099] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 69 mol% and less than or equal 80.5 mol% SiCh. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 75 mol% and less than or equal 80 mol% SiCh. In low B2O3 embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 69 mol%, greater than or equal to 71 mol%, greater than or equal to 73 mol%, or even greater than or equal to 75 mol%. In low B2O3 embodiments, the concentration of SiCh in theSP24-232 glass composition and the resultant glass article may be less than or equal to 80.5 mol%, less than or equal to 80 mol%, less than or equal to 79 mol% or even less than or equal to 78 mol%. In low B2O3 embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 69 mol% and less than or equal 80.5 mol%, greater than or equal to 69 mol% and less than or equal 80 mol%, greater than or equal to 69 mol% and less than or equal 79 mol%, greater than or equal to 69 mol% and less than or equal 78 mol%, greater than or equal to 71 mol% and less than or equal 80.5 mol%, greater than or equal to 71 mol% and less than or equal 80 mol%, greater than or equal to 71 mol% and less than or equal 79 mol%, greater than or equal to 71 mol% and less than or equal 78 mol%, greater than or equal to 69 mol% and less than or equal 80.5 mol%, greater than or equal to 73 mol% and less than or equal 80 mol%, greater than or equal to 73 mol% and less than or equal 79 mol%, greater than or equal to 73 mol% and less than or equal 78 mol%, greater than or equal to 75 mol% and less than or equal 80.5 mol%, greater than or equal to 75 mol% and less than or equal 80 mol%, greater than or equal to 75 mol% and less than or equal 79 mol%, or even greater than or equal to 75 mol% and less than or equal 78 mol%, or any and all sub-ranges formed from any of these endpoints.

[0100] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 67 mol% and less than or equal 80.2 mol% SiCh. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 75 mol% and less than or equal 80 mol% SiCh. In low AI2O3 embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 67 mol%, greater than or equal to 69 mol%, greater than or equal to 71 mol%, greater than or equal to 73 mol%, or even greater than or equal to 75 mol%. In low AI2O3 embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be less than or equal to 80.2 mol%, less than or equal to 80 mol%, less than or equal to 79 mol%, or even less than or equal to 78 mol%. In low AI2O3 embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 67 mol% and less than or equal 80.2 mol%, greater than or equal to 67 mol% and less than or equal 80 mol%, greater than or equal to 67 mol% and less than or equal 79 mol%, greater than or equal to 67 mol% and less than or equal 78 mol%, greater than or equal to 69 mol% and less than or equal 80.2 mol%, greater than or equal to 69 mol% and less than or equal 80 mol%, greater than or equal to 69 mol% and less than or equal 79 mol%, greater than or equal to 69 mol% and less than or equal 78 mol%,SP24-232 greater than or equal to 71 mol% and less than or equal 80.2 mol%, greater than or equal to 71 mol% and less than or equal 80 mol%, greater than or equal to 71 mol% and less than or equal 79 mol%, greater than or equal to 71 mol% and less than or equal 78 mol%, greater than or equal to 73 mol% and less than or equal 80.2 mol%, greater than or equal to 73 mol% and less than or equal80 mol%, greater than or equal to 73 mol% and less than or equal 79 mol%, greater than or equal to 73 mol% and less than or equal 78 mol%, greater than or equal to 75 mol% and less than or equal 80.2 mol%, greater than or equal to 75 mol% and less than or equal 80 mol%, greater than or equal to 75 mol% and less than or equal 79 mol%, or even greater than or equal to 75 mol% and less than or equal 78 mol%, or any and all sub-ranges formed from any of these endpoints.

[0101] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 67 mol% and less than or equal 85 mol% S i O2. In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 73 mol% and less than or equal 81 mol% SiCh. In ZrCh embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 67 mol%, greater than or equal to 69 mol%, greater than or equal to 71 mol%, greater than or equal to 73 mol%, or even greater than or equal to 75 mol%. In ZrCh embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be less than or equal to 85 mol%, less than or equal to 83 mol%, less than or equal to 81 mol%, or even less than or equal to 79 mol%. In ZrCh embodiments, the concentration of SiCh in the glass composition and the resultant glass article may be greater than or equal to 67 mol% and less than or equal 85 mol%, greater than or equal to 67 mol% and less than or equal 83 mol%, greater than or equal to 67 mol% and less than or equal81 mol%, greater than or equal to 67 mol% and less than or equal 79 mol%, greater than or equal to 69 mol% and less than or equal 85 mol%, greater than or equal to 69 mol% and less than or equal 83 mol%, greater than or equal to 69 mol% and less than or equal 81 mol%, greater than or equal to 69 mol% and less than or equal 79 mol%, greater than or equal to 71 mol% and less than or equal 85 mol%, greater than or equal to 71 mol% and less than or equal 83 mol%, greater than or equal to 71 mol% and less than or equal 81 mol%, greater than or equal to 71 mol% and less than or equal 79 mol%, greater than or equal to 73 mol% and less than or equal 85 mol%, greater than or equal to 73 mol% and less than or equal 83 mol%, greater than or equal to 73 mol% and less than or equal 81 mol%, greater than or equal to 73 mol% and less than or equal 79 mol%, greater than or equal to 75 mol% and less than or equal 85 mol%, greater than or equal to 75 mol%SP24-232 and less than or equal 83 mol%, greater than or equal to 75 mol% and less than or equal 81 mol%, or even greater than or equal to 75 mol% and less than or equal 79 mol%, or any and all sub-ranges formed from any of these endpoints.

[0102] Like S i C>2, AI2O3 may also stabilize the glass network and additionally provides improved mechanical properties and chemical durability to the glass article. The amount of AI2O3 may be limited to control the viscosity of the melt, thereby improving the formability of the resulting glass article. Additionally, if the amount of AI2O3 in the glass composition is too high, the resistance of the glass composition to acid attack is diminished.

[0103] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 2.1 mol% and less than or equal to 5.8 mol% AI2O3. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 2.3 mol% and less than or equal to 5.0 mol% AI2O3. In low B2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol%, greater than or equal to 2.3 mol%, greater than or equal to 2.5 mol%, greater than or equal to 2.7 mol%, greater than or equal to 2.9 mol%, greater than or equal to 3.1 mol%, greater than or equal to 3.3 mol%, or even greater than or equal to 3.5 mol%. In low B2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be less than or equal to 5.8 mol%, less than or equal to 5.5 mol%, less than or equal to 5.3 mol%, less than or equal to 5.0 mol%, less than or equal to 4.8 mol%, or even less than or equal to 4.5 mol%. In low B2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol% and less than or equal to 5.8 mol%, greater than or equal to 2.1 mol% and less than or equal to 5.5 mol%, greater than or equal to 2.1 mol% and less than or equal to 5.3 mol%, greater than or equal to 2.1 mol% and less than or equal to 5.0 mol%, greater than or equal to 2.1 mol% and less than or equal to 4.8 mol%, greater than or equal to 2.1 mol% and less than or equal to 4.5 mol%, greater than or equal to 2.3 mol% and less than or equal to 5.8 mol%, greater than or equal to 2.3 mol% and less than or equal to 5.5 mol%, greater than or equal to 2.3 mol% and less than or equal to 5.3 mol%, greater than or equal to 2.3 mol% and less than or equal to 5.0 mol%, greater than or equal to 2.3 mol% and less than or equal to 4.8 mol%, greater than or equal to 2.3 mol% and less than or equal to 4.5 mol%, greater than or equal to 2.5 mol% and less than or equal to 5.8 mol%, greater than or equal to 2.5 mol%SP24-232 and less than or equal to 5.5 mol%, greater than or equal to 2.5 mol% and less than or equal to 5.3 mol%, greater than or equal to 2.5 mol% and less than or equal to 5.0 mol%, greater than or equal to 2.5 mol% and less than or equal to 4.8 mol%, greater than or equal to 2.5 mol% and less than or equal to 4.5 mol%, greater than or equal to 2.7 mol% and less than or equal to 5.8 mol%, greater than or equal to 2.7 mol% and less than or equal to 5.5 mol%, greater than or equal to 2.7 mol% and less than or equal to 5.3 mol%, greater than or equal to 2.7 mol% and less than or equal to 5.0 mol%, greater than or equal to 2.7 mol% and less than or equal to 4.8 mol%, greater than or equal to 2.7 mol% and less than or equal to 4.5 mol%, greater than or equal to 2.9 mol% and less than or equal to 5.8 mol%, greater than or equal to 2.9 mol% and less than or equal to 5.5 mol%, greater than or equal to 2.9 mol% and less than or equal to 5.3 mol%, greater than or equal to 2.9 mol% and less than or equal to 5.0 mol%, greater than or equal to 2.9 mol% and less than or equal to 4.8 mol%, greater than or equal to 2.9 mol% and less than or equal to 4.5 mol%, greater than or equal to 3.1 mol% and less than or equal to 5.8 mol%, greater than or equal to 3.1 mol% and less than or equal to 5.5 mol%, greater than or equal to 3.1 mol% and less than or equal to 5.3 mol%, greater than or equal to 3.1 mol% and less than or equal to 5.0 mol%, greater than or equal to 3.1 mol% and less than or equal to 4.8 mol%, greater than or equal to 3.1 mol% and less than or equal to 4.5 mol%, greater than or equal to 3.3 mol% and less than or equal to 5.8 mol%, greater than or equal to 3.3 mol% and less than or equal to 5.5 mol%, greater than or equal to 3.3 mol% and less than or equal to 5.3 mol%, greater than or equal to 3.3 mol% and less than or equal to 5.0 mol%, greater than or equal to 3.3 mol% and less than or equal to 4.8 mol%, greater than or equal to 3.3 mol% and less than or equal to 4.5 mol%, greater than or equal to 3.5 mol% and less than or equal to 5.8 mol%, greater than or equal to 3.5 mol% and less than or equal to 5.5 mol%, greater than or equal to 3.5 mol% and less than or equal to 5.3 mol%, greater than or equal to 3.5 mol% and less than or equal to 5.0 mol%, greater than or equal to 3.5 mol% and less than or equal to 4.8 mol%, or even greater than or equal to 3.5 mol% and less than or equal to 4.5 mol%, or any and all subranges formed from any of these endpoints.

[0104] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3. In low AI2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be greater thanSP24-232 or equal to 0.1 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 2 mol%, or even greater than or equal to 3 mol%. In low AI2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be less than or equal to 6 mol%, less than or equal to 5 mol%, less than or equal to 4 mol%, less than or equal to 3 mol%, or even less than or equal to 2 mol%. In low AI2O3 embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol% and less than or equal to 6 mol%, greater than or equal to 0.1 mol% and less than or equal to 5 mol%, greater than or equal to 0.1 mol% and less than or equal to 4 mol%, greater than or equal to 0.1 mol% and less than or equal to 3 mol%, greater than or equal to 0.1 mol% and less than or equal to 2 mol%, greater than or equal to 0.5 mol% and less than or equal to 6 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, greater than or equal to 1 mol% and less than or equal to 6 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, greater than or equal to 1 mol% and less than or equal to 2 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 4 mol%, greater than or equal to 2 mol% and less than or equal to 3 mol%, greater than or equal to 3 mol% and less than or equal to 6 mol%, greater than or equal to 3 mol% and less than or equal to 5 mol%, or even greater than or equal to 3 mol% and less than or equal to 4 mol, or any and all sub-ranges formed from any of these endpoints.

[0105] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.1 mol% and less than or equal to 7.4 mol% AI2O3. In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3. In ZrCh embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In ZrCh embodiments, the concentration of AI2O3 in the glass composition and the resultant glass article may be less than or equal to 7.4 mol%, less than or equal to 6 mol%, less than or equal to 5 mol%, or even less than or equal to 4 mol%. In ZrCh embodiments, theSP24-232 concentration of AI2O3 in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol% and less than or equal to 7.4 mol%, greater than or equal to 0.1 mol% and less than or equal to 6 mol%, greater than or equal to 0.1 mol% and less than or equal to 5 mol%, greater than or equal to 0.1 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 7.4 mol%, greater than or equal to 0.5 mol% and less than or equal to 6 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 7.4 mol%, greater than or equal to 1 mol% and less than or equal to 6 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 2 mol% and less than or equal to 7.4 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, or even greater than or equal to 2 mol% and less than or equal to 4 mol%, or any and all sub-ranges formed from any of these endpoints.

[0106] B2O3 may optionally be included in the glass compositions and the resultant glass articles to help to achieve sufficient chemical durability. However, as described herein, a relatively high concentration of (e.g., about 10 mol% B2O3) may demonstrate a propensity for delamination. As such, in embodiments, it may be desirable to limit the concentration of B2O3.

[0107] In low B2O3 embodiments and low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3. In low B2O3 embodiments and low AI2O3 embodiments, the glass composition and the resultant glass article may be free or substantially free of B2O3. In low B2O3 embodiments and low AI2O3 embodiments, the concentration of B2O3 in glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0. 1 mol%, or even greater than or equal to 0.2 mol%. In low B2O3 embodiments and low AI2O3 embodiments, the concentration of B2O3 in glass composition and the resultant glass article may be less than or equal to 0.9 mol%, less than or equal to 0.7 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.3 mol%. In low B2O3 embodiments and low AI2O3 embodiments, the concentration of B2O3 in glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.9 mol%, greater than or equal to 0 mol% and less than or equal to 0.7 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equalSP24-232 to 0 mol% and less than or equal to 0.3 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.9 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.7 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.3 mol%, greater than or equal to 0.2 mol% and less than or equal to 0.9 mol%, greater than or equal to 0.2 mol% and less than or equal to 0.7 mol%, greater than or equal to 0.2 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.2 mol% and less than or equal to 0.3 mol%, or any and all sub-ranges formed from any of these endpoints.

[0108] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 7 mol% B2O3. In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 5 mol% B2O3. In ZrCh embodiments, the concentration of B2O3 in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In ZrCh embodiments, the concentration of B2O3 in the glass composition and the resultant glass article may be less than or equal to 7 mol%, less than or equal to 6 mol%, less than or equal to 5 mol%, less than or equal to 4 mol%, or even less than or equal to 3 mol%. In ZrCh embodiments, the concentration of B2O3 in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 6 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 6 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 6 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 4 mol%, or even greater than or equal to 2 mol% and less than or equal to 3 mol%, or any and all sub-ranges formedSP24-232 from any of these endpoints. In ZrCh embodiments, the glass composition and the resultant glass article may be free or substantially free of B2O3.

[0109] The glass compositions described herein may also include alkali oxides, such as Na2O, and K2O, to improve meltability.

[0110] The glass compositions and resultant glass articles described herein include Na2O, which improves the meltability of the glass composition. If the concentration of Na2O is too low, the liquidus temperature of the glass composition may increase, making the glass composition difficult to melt. However, if the concentration of Na2O is too high, the chemical durability of the glass composition decreases. As such, it may be desirable to limit the concentration of Na2O.

[0111] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.1 mol% and less than or equal to 11.5 mol% Na2O. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 9 mol% Na2O. In low B2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 2 mol%, greater than or equal to 3 mol%, or even greater than or equal to 4 mol%. In low B2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be less than or equal to 11.5 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low B2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol% and less than or equal to 11.5 mol%, greater than or equal to 0.1 mol% and less than or equal to 9 mol%, greater than or equal to 0.1 mol% and less than or equal to 7 mol%, greater than or equal to 0.1 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 11.5 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 11.5 mol%,SP24-232 greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, greater than or equal to 3 mol% and less than or equal to 11.5 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 7 mol%, greater than or equal to 3 mol% and less than or equal to 5 mol%, greater than or equal to 4 mol% and less than or equal to 11.5 mol%, greater than or equal to 4 mol% and less than or equal to 9 mol%, greater than or equal to 4 mol% and less than or equal to 7 mol%, or even greater than or equal to 4 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints.

[0112] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.1 mol% and less than or equal to 11.75 mol% Na2O. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 9 mol% Na2O. In low AI2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 2 mol%, greater than or equal to 3 mol%, or even greater than or equal to 4 mol%. In low AI2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be less than or equal to 11.75 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low AI2O3 embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol% and less than or equal to 11.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 9 mol%, greater than or equal to 0.1 mol% and less than or equal to 7 mol%, greater than or equal to 0.1 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 11.75 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 11.75 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 11.75 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, greater than or equal to 2 mol% and less than or equalSP24-232 to 5 mol%, greater than or equal to 3 mol% and less than or equal to 11.75 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 7 mol%, greater than or equal to 3 mol% and less than or equal to 5 mol%, greater than or equal to 4 mol% and less than or equal to 11.75 mol%, greater than or equal to 4 mol% and less than or equal to 9 mol%, greater than or equal to 4 mol% and less than or equal to 7 mol%, or even greater than or equal to 4 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints.

[0113] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 2.1 mol% and less than or equal to 12 mol% Na2O. In ZrCh embodiments, the glass composition and the resultant glass composition may comprise greater than or equal to 3 mol% and less than or equal to 10 mol% Na2O. In ZrCh embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol%, greater than or equal to 2.5 mol%, greater than or equal to 3 mol%, or even greater than or equal to 3.5 mol%. In ZrCh embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be less than or equal to 12 mol%, less than or equal to 10 mol%, less than or equal to 8 mol%, or even less than or equal to 6 mol%. In ZrCh embodiments, the concentration of Na2O in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol% and less than or equal to 12 mol%, greater than or equal to 2.1 mol% and less than or equal to 10 mol%, greater than or equal to 2.1 mol% and less than or equal to 8 mol%, greater than or equal to 2.1 mol% and less than or equal to 6 mol%, greater than or equal to 2.5 mol% and less than or equal to 12 mol%, greater than or equal to 2.5 mol% and less than or equal to 10 mol%, greater than or equal to 2.5 mol% and less than or equal to 8 mol%, greater than or equal to 2.5 mol% and less than or equal to 6 mol%, greater than or equal to 3 mol% and less than or equal to 12 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 8 mol%, greater than or equal to 3 mol% and less than or equal to 6 mol%, greater than or equal to 3.5 mol% and less than or equal to 12 mol%, greater than or equal to 3.5 mol% and less than or equal to 10 mol%, or even greater than or equal to 3.5 mol% and less than or equal to 8 mol%, greater than or equal to 3.5 mol% and less than or equal to 6 mol%, or any and all sub-ranges formed from any of these endpoints.SP24-232

[0114] K2O, when included in the glass composition and the resultant glass article, improves the meltability. However, if the concentration of K2O is too high, the hydrolytic resistance of the glass may decrease. Therefore, it may be desirable to limit the concentration of K2O.

[0115] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 11.4 mol% K2O. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 9 mol% K2O. In low B2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or than or equal to 2 mol%. In low B2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be less than or equal to 11.4 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low B2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 11.4 mol%, greater than or equal to 0 mol% and less than or equal to 9 mol%, greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 11.4 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 11.4 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 11.4 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, or even greater than or equal to 2 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints. In low B2O3 embodiments, the glass composition and the resultant glass article may be free or substantially free of K2O.

[0116] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 11.65 mol% K2O. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than orSP24-232 equal to 1 mol% and less than or equal to 9 mol% K2O. In low AI2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or than or equal to 2 mol%. In low AI2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be less than or equal to 11.65 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low AI2O3 embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 11.65 mol%, greater than or equal to 0 mol% and less than or equal to 9 mol%, greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 11.65 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 11.65 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 11.65 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, or even greater than or equal to 2 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints. In low AI2O3 embodiments, the glass composition and the resultant glass article may be free or substantially free of K2O.

[0117] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 9.9 mol% K2O. In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 9 mol% K2O. In ZrCh embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, or even greater than or equal to 1 mol%. In ZrCh embodiments, the concentration of K2O in the glass composition and the resultant glass article may be less than or equal to 9.9 mol%, less than or equal 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In ZrCh embodiments, the concentration of K2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 9.9SP24-232 mol%, greater than or equal to 0 mol% and less than or equal to 9 mol%, greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 9.9 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 9.9 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, or even greater than or equal to 1 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints. In ZrCh embodiments, the glass composition and the resultant glass article may be free or substantially free of K2O.

[0118] The glass composition and the resultant glass article may include a minimum sum of Na2O and K2O (i.e., Na2O (mol%) + K2O (mol%)) to ensure meltability of the glass. The sum of Na2O and K2O may be limited to ensure that the resulting glass article achieves a desirable chemical durability.

[0119] In low B2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%. In low B2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 3 mol% and less than or equal to 10 mol%. In low B2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 3 mol%, greater than or equal to than or equal to 5 mol%, or even greater than or equal to 7 mol%. In low B2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be less than or equal to 11.5 mol%, less than or equal to 10 mol%, or even less than or equal to 9 mol%. In low B2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%, greater than or equal to 0.5 mol% and less than or equal to 10 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 11.5 mol%, greater than or equal to 1 mol% and less than or equal to 10 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 11.5 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and lessSP24-232 than or equal to 9 mol%, greater than or equal to 5 mol% and less than or equal to 11.5 mol%, greater than or equal to 5 mol% and less than or equal to 10 mol%, greater than or equal to 5 mol% and less than or equal to 9 mol%, greater than or equal to 7 mol% and less than or equal to 11.5 mol%, greater than or equal to 7 mol% and less than or equal to 10 mol%, or even greater than or equal to 7 mol% and less than or equal to 9 mol%, or any and all sub-ranges formed from any of these endpoints.

[0120] In low AI2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol% and less than or equal to 11.75 mol%. In low AI2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 3 mol% and less than or equal to 11 mol%. In low AI2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 3 mol%, greater than or equal to 5 mol%, or even greater than or equal to 7 mol%. In low AI2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be less than or equal to 11.75 mol%, less than or equal to 11 mol%, or even less than or equal to 9 mol%. In low AI2O3 embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 0.5 mol% and less than or equal to 11.75 mol%, greater than or equal to 0.5 mol% and less than or equal to 11 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 11.75 mol%, greater than or equal to 1 mol% and less than or equal to 11 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 11.75 mol%, greater than or equal to 3 mol% and less than or equal to 11 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 5 mol% and less than or equal to 11.75 mol%, greater than or equal to 5 mol% and less than or equal to 11 mol%, greater than or equal to 5 mol% and less than or equal to 9 mol%, greater than or equal to 7 mol% and less than or equal to 11.75 mol%, greater than or equal to 7 mol% and less than or equal to 11 mol%, or even greater than or equal to 7 mol% and less than or equal to 9 mol%, or any and all sub-ranges formed from any of these endpoints.

[0121] In ZrCh embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol% and less than or equal to 12 mol%. In ZrCh embodiments,SP24-232Na20 + K2O in the glass composition and the resultant glass article may be greater than or equal to 5 mol% and less than or equal to 11 mol%. In ZrCh embodiments, Na20 + K2O in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol%, greater than or equal to 3 mol%, greater than or equal to 5 mol%, or even greater than or equal to 7 mol%. In ZrCh embodiments, Na20 + K2O in the glass composition and the resultant glass article may be less than or equal to 12 mol%, less than or equal to 11 mol%, less than or equal to 10 mol%, or even less than or equal to 9 mol%. In ZrCh embodiments, Na2O + K2O in the glass composition and the resultant glass article may be greater than or equal to 2.1 mol% and less than or equal to 12 mol%, greater than or equal to 2.1 mol% and less than or equal to 11 mol%, greater than or equal to 2.1 mol% and less than or equal to 10 mol%, greater than or equal to 2.1 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 12 mol%, greater than or equal to 3 mol% and less than or equal to 11 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 5 mol% and less than or equal to 12 mol%, greater than or equal to 5 mol% and less than or equal to 11 mol%, greater than or equal to 5 mol% and less than or equal to 10 mol%, greater than or equal to 5 mol% and less than or equal to 9 mol%, greater than or equal to 7 mol% and less than or equal to 12 mol%, greater than or equal to 7 mol% and less than or equal to 11 mol%, greater than or equal to 7 mol% and less than or equal to 10 mol%, or even greater than or equal to 7 mol% and less than or equal to 9 mol%, or any and all sub-ranges formed from any of these endpoints.

[0122] In embodiments, the ratio of Na2O to the sum of Na2O and K2O (i.e., Na2O (mol%) / (Na2O (mol%) + K2O (mol%)) in the glass composition and the resultant glass article may be greater than or equal to 0 and less than or equal to 0.9. In embodiments, Na2O / (Na2O + K2O) in the glass composition and the resultant glass article may be greater than or equal to 0.2 and less than or equal to 0.8. In embodiments, Na2O / (Na2O + K2O) in the glass composition and the resultant glass article may be greater than or equal to 0, greater than or equal to 0.1, greater than or equal to 0.2, greater than or equal to 0.3, greater than or equal to 0.4, or even greater than or equal to 0.5. In embodiments, Na2O / (Na2O + K2O) in the glass composition and the resultant glass article may be less than or equal to 0.9, less than or equal to 0.8, or even less than or equal to 0.7. In embodiments, Na2O / (Na2O + K2O) in the glass composition and the resultant glass article may be greater than or equal to 0 and less than or equal to 0.9, greater than or equal to 0 and less than or equal to 0.8,SP24-232 greater than or equal to 0 and less than or equal to 0.7, greater than or equal to 0.1 and less than or equal to 0.9, greater than or equal to 0.1 and less than or equal to 0.8, greater than or equal to 0.1 and less than or equal to 0.7, greater than or equal to 0.2 and less than or equal to 0.9, greater than or equal to 0.2 and less than or equal to 0.8, greater than or equal to 0.2 and less than or equal to 0.7, greater than or equal to 0.3 and less than or equal to 0.9, greater than or equal to 0.3 and less than or equal to 0.8, greater than or equal to 0.3 and less than or equal to 0.7, greater than or equal to 0.4 and less than or equal to 0.9, greater than or equal to 0.4 and less than or equal to 0.8, greater than or equal to 0.4 and less than or equal to 0.7, greater than or equal to 0.5 and less than or equal to 0.9, greater than or equal to 0.5 and less than or equal to 0.8, or even greater than or equal to 0.5 and less than or equal to 0.7, or any and all sub-ranges formed from any of these endpoints.

[0123] The glass compositions and resultant glass articles described herein may further include Li2O. Li2O, when included, decreases the melting point, thereby improving meltability of the glass composition. Additionally, Li2O may improve the hydrolytic resistance of the glass, thereby providing for a more chemically durable glass.

[0124] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 3.9 mol% Li2O. In low B2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.5 mol%. In low B2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be less than or equal to 3.9 mol%, less than or equal to 3 mol%, less than or equal to 2 mol%, or even less than or equal to 1 mol%. In low B2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 3.9 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0 mol% and less than or equal to 1 mol%, greater than or equal to 0.5 mol% and less than or equal to 3.9 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, or even greater than or equal to 0.5 mol% and less than or equal to 1 mol%, or any and all sub-ranges formed from any of these endpoints. In low B2O3 embodiments, the glass composition and the resultant glass article may be free or substantially free of U2O.SP24-232

[0125] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 3 mol% Li2O. In low AI2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.5 mol%. In low AI2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be less than or equal to 3 mol%, less than or equal to 2 mol%, or even less than or equal to 1 mol%. In low AI2O3 embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0 mol% and less than or equal to 1 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, or even greater than or equal to 0.5 mol% and less than or equal to 1 mol%, or any and all sub-ranges formed from any of these endpoints. In low AI2O3 embodiments, the glass composition and the resultant glass article may be free or substantially free of Li2O.

[0126] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 3.75 mol% Li2O. In ZrCh embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.5 mol%. In ZrCh embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be less than or equal to 3.75 mol%, less than or equal to 3 mol%, less than or equal to 2 mol%, or even less than or equal to 1 mol%. In ZrCh embodiments, the concentration of Li2O in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 3.75 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0 mol% and less than or equal to 1 mol%, greater than or equal to 0.5 mol% and less than or equal to 3.75 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, or even greater than or equal to 0.5 mol% and less than or equal to 1 mol%, or any and all sub-ranges formed from any of these endpoints. In ZrCh embodiments, the glass composition and the resultant glass article may be free or substantially free of Li2O.SP24-232

[0127] Alkaline earth oxides, such as CaO, MgO, SrO, ZnO, and BaO, may be present in the glass compositions and the resultant glass articles to improve the meltability of the glass compositions and increase the chemical durability of the resultant glass articles.

[0128] In low B2O3 and ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 15 mol% MgO. In low B2O3 and ZrO2 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 2 mol% and less than or equal to 10 mol% MgO. In low B2O3 and ZrO2 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 2 mol%, greater than or equal to 3 mol%, or even greater than or equal to 4 mol%. In low B2O3 and ZrO2 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be less than or equal to 15 mol%, less than or equal to 12 mol%, less than or equal to 10 mol%, less than or equal to 8 mol%, or even less than or equal to 6 mol%. In low B2O3 and ZrO2 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 15 mol%, greater than or equal to 0 mol% and less than or equal to 12 mol%, greater than or equal to 0 mol% and less than or equal to 10 mol%, greater than or equal to 0 mol% and less than or equal to 8 mol%, greater than or equal to 0 mol% and less than or equal to 6 mol%, greater than or equal to 0.5 mol% and less than or equal to 15 mol%, greater than or equal to 0.5 mol% and less than or equal to 12 mol%, greater than or equal to 0.5 mol% and less than or equal to 10 mol%, greater than or equal to 0.5 mol% and less than or equal to 8 mol%, greater than or equal to 0.5 mol% and less than or equal to 6 mol%, greater than or equal to 1 mol% and less than or equal to 15 mol%, greater than or equal to 1 mol% and less than or equal to 12 mol%, greater than or equal to 1 mol% and less than or equal to 10 mol%, greater than or equal to 1 mol% and less than or equal to 8 mol%, greater than or equal to 1 mol% and less than or equal to 6 mol%, greater than or equal to 2 mol% and less than or equal to 15 mol%, greater than or equal to 2 mol% and less than or equal to 12 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 8 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, greater than or equal to 3 mol% and less than or equal to 15 mol%, greater than or equal to 3 mol% and less than or equal to 12 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less thanSP24-232 or equal to 8 mol%, greater than or equal to 3 mol% and less than or equal to 6 mol%, greater than or equal to 4 mol% and less than or equal to 15 mol%, greater than or equal to 4 mol% and less than or equal to 12 mol%, greater than or equal to 4 mol% and less than or equal to 10 mol%, greater than or equal to 4 mol% and less than or equal to 8 mol%, or even greater than or equal to 4 mol% and less than or equal to 6 mol%, or any and all sub-ranges formed from any of these endpoints. In low B2O3 and ZrCh embodiments, the glass composition and the resultant glass article may be free or substantially free of MgO.

[0129] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1.6 mol% and less than or equal to 15 mol% MgO. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 2 mol% and less than or equal to 10 mol% MgO. In low AI2O3 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be greater than or equal to 1.6 mol%, greater than or equal to than or equal to 2 mol%, greater than or equal to 3 mol%, or even greater than or equal to 4 mol%. In low AI2O3 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be less than or equal to 15 mol%, less than or equal to 12 mol%, less than or equal to 10 mol%, less than or equal to 8 mol%, or even less than or equal to 6 mol%. In low AI2O3 embodiments, the concentration of MgO in the glass composition and the resultant glass article may be greater than or equal to 1.6 mol% and less than or equal to 15 mol%, greater than or equal to 1.6 mol% and less than or equal to 12 mol%, greater than or equal to 1.6 mol% and less than or equal to 10 mol%, greater than or equal to 1.6 mol% and less than or equal to 8 mol%, greater than or equal to 1.6 mol% and less than or equal to 6 mol%, greater than or equal to 2 mol% and less than or equal to 15 mol%, greater than or equal to 2 mol% and less than or equal to 12 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 8 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, greater than or equal to 3 mol% and less than or equal to 15 mol%, greater than or equal to 3 mol% and less than or equal to 12 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 8 mol%, greater than or equal to 3 mol% and less than or equal to 6 mol%, greater than or equal to 4 mol% and less than or equal to 15 mol%, greater than or equal to 4 mol% and less than or equal to 12 mol%, greater than or equal to 4 mol% and less than or equal to 10 mol%, greater than or equal to 4 mol% and less than or equal to 8 mol%, or even greater than orSP24-232 equal to 4 mol% and less than or equal to 6 mol%, or any and all sub-ranges formed from any of these endpoints.

[0130] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.3 mol% and less than or equal to 15 mol% CaO. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 7 mol% CaO. In low B2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be greater than or equal to 0.3 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In low B2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be less than or equal to 15 mol%, less than or equal to 13 mol%, less than or equal to 11 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low B2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be greater than or equal to 0.3 mol% and less than or equal to 15 mol%, greater than or equal to 0.3 mol% and less than or equal to 13 mol%, greater than or equal to 0.3 mol% and less than or equal to 11 mol%, greater than or equal to 0.3 mol% and less than or equal to 9 mol%, greater than or equal to 0.3 mol% and less than or equal to 7 mol%, greater than or equal to 0.3 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 15 mol%, greater than or equal to 0.5 mol% and less than or equal to 13 mol%, greater than or equal to 0.5 mol% and less than or equal to 11 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 15 mol%, greater than or equal to 1 mol% and less than or equal to 13 mol%, greater than or equal to 1 mol% and less than or equal to 11 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 15 mol%, greater than or equal to 2 mol% and less than or equal to 13 mol%, greater than or equal to 2 mol% and less than or equal to 11 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, or even greater than or equal to 2 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints.SP24-232

[0131] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO. In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 7 mol% CaO. In low AI2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be greater than or equal to 0.2 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In low AI2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be less than or equal to 15 mol%, less than or equal to 13 mol%, less than or equal to 11 mol%, less than or equal to 9 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In low AI2O3 embodiments, the concentration of CaO in the glass composition and the resultant glass article may be greater than or equal to 0.2 mol% and less than or equal to 15 mol%, greater than or equal to 0.2 mol% and less than or equal to 13 mol%, greater than or equal to 0.2 mol% and less than or equal to 11 mol%, greater than or equal to 0.2 mol% and less than or equal to 9 mol%, greater than or equal to 0.2 mol% and less than or equal to 7 mol%, greater than or equal to 0.2 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 15 mol%, greater than or equal to 0.5 mol% and less than or equal to 13 mol%, greater than or equal to 0.5 mol% and less than or equal to 11 mol%, greater than or equal to 0.5 mol% and less than or equal to 9 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 15 mol%, greater than or equal to 1 mol% and less than or equal to 13 mol%, greater than or equal to 1 mol% and less than or equal to 11 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 15 mol%, greater than or equal to 2 mol% and less than or equal to 13 mol%, greater than or equal to 2 mol% and less than or equal to 11 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, or even greater than or equal to 2 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints.

[0132] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO. In ZrO2 embodiments,SP24-232 the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 10 mol% CaO. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0.2 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be less than or equal to 15 mol%, less than or equal to 12 mol%, less than or equal to 10 mol%, less than or equal to 8 mol%, less than or equal to 6 mol%, or even less than or equal to 4 mol%. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0.2 mol% and less than or equal to 15 mol%, greater than or equal to 0.2 mol% and less than or equal to 12 mol%, greater than or equal to 0.2 mol% and less than or equal to 10 mol%, greater than or equal to 0.2 mol% and less than or equal to 8 mol%, greater than or equal to 0.2 mol% and less than or equal to 6 mol%, greater than or equal to 0.2 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 15 mol%, greater than or equal to 0.5 mol% and less than or equal to 12 mol%, greater than or equal to 0.5 mol% and less than or equal to 10 mol%, greater than or equal to 0.5 mol% and less than or equal to 8 mol%, greater than or equal to 0.5 mol% and less than or equal to 6 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 15 mol%, greater than or equal to 1 mol% and less than or equal to 12 mol%, greater than or equal to 1 mol% and less than or equal to 10 mol%, greater than or equal to 1 mol% and less than or equal to 8 mol%, greater than or equal to 1 mol% and less than or equal to 6 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 2 mol% and less than or equal to 15 mol%, greater than or equal to 2 mol% and less than or equal to 12 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 8 mol%, greater than or equal to 2 mol% and less than or equal to 6 mol%, or even greater than or equal to 2 mol% and less than or equal to 4 mol%, or any and all sub-ranges formed from any of these endpoints.

[0133] In low B2O3 and ZrCh embodiments, the sum of CaO and MgO (i.e., CaO (mol%) + MgO (mol%)) in the glass composition and the resultant glass article may be greater than or equal to 1 mol% and less than or equal to 10.75 mol%. In low B2O3 and ZrO2 embodiments, CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 3 mol% and less than or equal to 10 mol%. In low B2O3 and ZrO2 embodiments, CaO + MgO in the glassSP24-232 composition and the resultant glass article may be greater than or equal to 1 mol%, greater than or equal to 2 mol%, greater than or equal to 3 mol%, greater than or equal to 4 mol%, greater than or equal to 5 mol%, greater than or equal to 6 mol%, or even greater than or equal to 7 mol%. In low B2O3 and ZrCh embodiments, CaO + MgO in the glass composition and the resultant glass article may be less than or equal to 10.75 mol%, less than or equal to 10 mol%, less than or equal to 9 mol%, or even less than or equal to 8 mol%. In low B2O3 and ZrCh embodiments, CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 1 mol% and less than or equal to 10.75 mol%, greater than or equal to 1 mol% and less than or equal to 10 mol%, greater than or equal to 1 mol% and less than or equal to 9 mol%, greater than or equal to 1 mol% and less than or equal to 8 mol%, greater than or equal to 2 mol% and less than or equal to 10.75 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 8 mol%, greater than or equal to 3 mol% and less than or equal to 10.75 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 8 mol%, greater than or equal to 4 mol% and less than or equal to 10.75 mol%, greater than or equal to 4 mol% and less than or equal to 10 mol%, greater than or equal to 4 mol% and less than or equal to 9 mol%, greater than or equal to 4 mol% and less than or equal to 8 mol%, greater than or equal to 5 mol% and less than or equal to 10.75 mol%, greater than or equal to 5 mol% and less than or equal to 10 mol%, greater than or equal to 5 mol% and less than or equal to 9 mol%, greater than or equal to 5 mol% and less than or equal to 8 mol%, greater than or equal to 6 mol% and less than or equal to 10.75 mol%, greater than or equal to 6 mol% and less than or equal to 10 mol%, greater than or equal to 6 mol% and less than or equal to 9 mol%, greater than or equal to 6 mol% and less than or equal to 8 mol%, greater than or equal to 7 mol% and less than or equal to 10.75 mol%, greater than or equal to 7 mol% and less than or equal to 10 mol%, greater than or equal to 7 mol% and less than or equal to 9 mol%, or even greater than or equal to 7 mol% and less than or equal to 8 mol%, or any and all sub-ranges formed from any of these endpoints.

[0134] In low AI2O3 embodiments, CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 1.8 mol% and less than or equal to 10.75 mol%. In low AI2O3 embodiments, CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 3 mol% and less than or equal to 10 mol%. In low AI2O3 embodiments,SP24-232CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 1.8 mol%, greater than or equal to 2 mol%, greater than or equal to 3 mol%, greater than or equal to 4 mol%, greater than or equal to 5 mol%, greater than or equal to 6 mol%, or even greater than or equal to 7 mol%. In low AI2O3 embodiments, CaO + MgO in the glass composition and the resultant glass article may be less than or equal to 10.75 mol%, less than or equal to 10 mol%, less than or equal to 9 mol%, or even less than or equal to 8 mol%. In low AI2O3 embodiments, CaO + MgO in the glass composition and the resultant glass article may be greater than or equal to 1.8 mol% and less than or equal to 10.75 mol%, greater than or equal to 1.8 mol% and less than or equal to 10 mol%, greater than or equal to 1.8 mol% and less than or equal to 9 mol%, greater than or equal to 1.8 mol% and less than or equal to 8 mol%, greater than or equal to 2 mol% and less than or equal to 10.75 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 9 mol%, greater than or equal to 2 mol% and less than or equal to 8 mol%, greater than or equal to 3 mol% and less than or equal to 10.75 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 9 mol%, greater than or equal to 3 mol% and less than or equal to 8 mol%, greater than or equal to 4 mol% and less than or equal to 10.75 mol%, greater than or equal to 4 mol% and less than or equal to 10 mol%, greater than or equal to 4 mol% and less than or equal to 9 mol%, greater than or equal to 4 mol% and less than or equal to 8 mol%, greater than or equal to 5 mol% and less than or equal to 10.75 mol%, greater than or equal to 5 mol% and less than or equal to 10 mol%, greater than or equal to 5 mol% and less than or equal to 9 mol%, greater than or equal to 5 mol% and less than or equal to 8 mol%, greater than or equal to 6 mol% and less than or equal to 10.75 mol%, greater than or equal to 6 mol% and less than or equal to 10 mol%, greater than or equal to 6 mol% and less than or equal to 9 mol%, greater than or equal to 6 mol% and less than or equal to 8 mol%, greater than or equal to 7 mol% and less than or equal to 10.75 mol%, greater than or equal to 7 mol% and less than or equal to 10 mol%, greater than or equal to 7 mol% and less than or equal to 9 mol%, or even greater than or equal to 7 mol% and less than or equal to 8 mol%, or any and all sub-ranges formed from any of these endpoints.

[0135] In embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO. In embodiments, the concentration of ZnO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.1 mol%. In embodiments, the concentrationSP24-232 of ZnO in the glass composition and the resultant glass article may be less than or equal to 0.75 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.25 mol%. In embodiments, the concentration of ZnO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.75 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equal to 0 mol% and less than or equal to 0.25 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 0.25 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant glass article may be free or substantially free of ZnO.

[0136] In embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO. In embodiments, the concentration of SrO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.1 mol%. In embodiments, the concentration of SrO in the glass composition and the resultant glass article may be less than or equal to 0.75 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.25 mol%. In embodiments, the concentration of SrO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.75 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equal to 0 mol% and less than or equal to 0.25 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 0.25 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant glass article may be free or substantially free of SrO.

[0137] In embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO. In embodiments, the concentration of BaO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.1 mol%. In embodiments, the concentration of BaO in the glass composition and the resultant glass article may be less than or equal to 0.75 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.25 mol%. In embodiments,SP24-232 the concentration of BaO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.75 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equal to 0 mol% and less than or equal to 0.25 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 0.25 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass composition and the resultant glass article may be free or substantially free of BaO.

[0138] In embodiments, the sum of SrO, ZnO, and BaO (i.e., SrO (mol%) + ZnO (mol%) + BaO (mol%)) in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.75 mol%. In embodiments, the glass composition and the resultant glass article may be free or substantially free of SrO, ZnO, and BaO. In embodiments, SrO + ZnO + BaO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.1 mol%. In embodiments, SrO + ZnO + BaO in the glass composition and the resultant glass article may be less than or equal to 0.75 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.25 mol%. In embodiments, SrO + ZnO + BaO in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 0.75 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equal to 0 mol% and less than or equal to 0.25 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 0.25 mol%, or any and all sub-ranges formed from any of these endpoints.

[0139] The glass compositions described herein may further comprise one or more additional metal oxides to further improve the chemical durability of the resultant glass article. Specifically, additions of one or more of ZrCh, TiCh, Y2O3, La2Os, and CeCh may further increase the chemical durability of the resultant glass article, particularly with respect to the chemical durability of the glass in basic solutions. Without wishing to be bound by theory, it is believed that the addition of one or more of ZrCh, TiCh, Y2O3, La2C>3, and CeCh improves the properties of the glass by enhancing the functionality of AI2O3 in the glass composition. As noted herein, additions of AI2O3 to the glass composition improve the chemical durability of the glass. With respect to chemicalSP24-232 durability, it is believed that additions of AI2O3 to the glass composition reduce the amount of nonbridging oxygen in the glass, which, in turn, improved the chemical durability of the glass. However, if the amount of AI2O3 in the glass composition is too high, the resistance of the glass composition to acid attack is diminished. Including one or more of ZrCh, TiCh, Y2O3, La2C>3, and CeCh, in addition to AI2O3, further reduces the amount of non-bridging oxygen in the glass composition, which, in turn, further improves the chemical durability of the glass beyond that achievable by additions of AI2O3 alone.

[0140] Additions of ZrCh to the glass composition may improve the chemical durability of the resultant glass article, particularly base resistance, without imparting a color to the glass composition (i.e., addition of ZrCh aid in maintaining the glass as “colorless” as determined by the transmittance of the glass).

[0141] In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh. In low B2O3 embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 3 mol% ZrCh In low B2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol% or even greater than or equal to 1 mol%. In low B2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be less than or equal to 5 mol%, less than or equal to 4 mol%, less than or equal to 3 mol%, or even less than or equal to 2 mol%. In low B2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, or even greater than or equal to 1 mol% and less than or equal to 2 mol%, or any andSP24-232 all sub-ranges formed from any of these endpoints. In low B2O3 embodiments, the glass composition and the resultant glass composition may be free or substantially free of ZrCh

[0142] In low AI2O3 embodiments, the glass composition and the resultant glass composition may comprise greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh In low AI2O3 embodiments, the glass composition and the resultant glass composition may comprise greater than 0 mol% and less than or equal to 4 mol% ZrCh. In low AI2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In low AI2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be less than or equal to 5 mol%, less than or equal to 4 mol%, or even less than or equal to 3 mol%. In low AI2O3 embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 4 mol%, or even greater than or equal to 2 mol% and less than or equal to 3 mol%, or any and all sub-ranges formed from any of these endpoints. In low AI2O3 embodiments, the glass composition and the resultant glass composition may be free or substantially free of ZrCh.

[0143] In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrCh. In ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 1 mol% and less than or equal to 4 mol% ZrCh. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, or even greater than or equal to 2 mol%. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be less than or equal to 4.75 mol%, less than or equal to 4.5 mol%, less than orSP24-232 equal to 4.25 mol%, or even less than or equal to 4 mol%. In ZrCh embodiments, the concentration of ZrCh in the glass composition and the resultant glass article may be greater than or equal to 0.1 mol% and less than or equal to 4.75 mol%, greater than or equal to 0.1 mol% and less than or equal to 4.5 mol%, greater than or equal to 0.1 mol% and less than or equal to 4.25 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 4 mol%, or any and all sub-ranges formed from any of these endpoints.

[0144] Additions of TiCh may improve the hydrolytic resistance of the resultant glass article.

[0145] In low B2O3 embodiments and ZrCh embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 5 mol% TiCh. In low B2O3 embodiments and ZrCh embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, or even greater than or equal to 1 mol%. In low B2O3 embodiments and ZrCh embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be less than or equal to 5 mol%, less than or equal to 4 mol%, less than or equal to 3 mol%, or even less than or equal to 2 mol%. In low B2O3 embodiments and ZrCh embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, or even greater than or equal to 1 mol% and less than or equal to 2 mol%, or any and all sub-ranges formed from any of these endpoints. In low B2O3 embodiments and ZrCh embodiments, the glass compositions and resultant glass article may be free or substantially free of TiO2.

[0146] In low AI2O3 embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 10 mol% TiCh. In low AI2O3SP24-232 embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 5 mol% TiCh. In low AI2O3 embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, or even greater than or equal to 1 mol%. In low AI2O3 embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be less than or equal to 10 mol%, less than or equal to 7 mol%, less than or equal to 5 mol%, or even less than or equal to 3 mol%. In low AI2O3 embodiments, the concentration of TiCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 10 mol%, greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 10 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, or even greater than or equal to 0.5 mol% and less than or equal to 3 mol%, or any and all sub-ranges formed from any of these endpoints. In low AI2O3 embodiments, the glass compositions and resultant glass article may be free or substantially free of TiO2.

[0147] Additions of Y2O3 may improve the hydrolytic, acid, and base resistance of the resultant glass article. Moreover, Y2O3 may improve the chemical durability of the resultant glass article without imparting a color to the glass composition (i.e., addition of Y2O3 in maintaining the glass as “colorless” as determined by the transmittance of the glass). In embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 5 mol% Y2O3. In embodiments, the concentration of Y2O3 in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, or even greater than or equal to 1 mol%. In embodiments, the concentration of Y2O3 in the glass composition and the resultant glass article may be less than or equal to 5 mol%, less than or equal to 4 mol%, less than or equal to 3 mol%, or even less than or equal to 2 mol%. In embodiments, the concentration of Y2O3 in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than orSP24-232 equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, or even greater than or equal to 1 mol% and less than or equal to 2 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass compositions and resultant glass article may be free or substantially free of Y2O3.

[0148] Additions of La2O3may improve the hydrolytic resistance of the resultant glass article. Moreover, La2O3may improve the chemical durability of the resultant glass article without imparting a color to the glass composition (i.e., addition of La2O3in maintaining the glass as “colorless” as determined by the transmittance of the glass). In embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 5 mol% La2O3. In embodiments, the concentration of La2O3in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, or even greater than or equal to 1 mol%. In embodiments, the concentration of La2O3in the glass composition and the resultant glass article may be less than or equal to 5 mol%, less than or equal to 4 mol%, less than or equal to 3 mol%, or even less than or equal to 2 mol%. In embodiments, the concentration of La2O3in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0 mol% and less than or equal to 4 mol%, greater than or equal to 0 mol% and less than or equal to 3 mol%, greater than or equal to 0 mol% and less than or equal to 2 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 4 mol%, greater than or equal to 0.5 mol% and less than or equal to 3 mol%, greater than or equal to 0.5 mol% and less than or equal to 2 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 4 mol%, greater than or equal to 1 mol% and less than or equal to 3 mol%, or even greater than or equal to 1 mol% and less than or equal to 2 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass compositions and resultant glass article may be free or substantially free of La2O3.SP24-232

[0149] Additions of CeCh may improve the acid and base resistance of the resultant glass article. Moreover, CeCh may improve the meltability of the glass. In embodiments, the glass composition and the resultant glass article may comprise greater than 0 mol% and less than or equal to 10 mol% CeCh. In embodiments, the concentration of CeCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol%, greater than or equal to 0.5 mol%, greater than or equal to 1 mol%, greater than or equal to 2 mol%, or even greater than or equal to 3 mol%. In embodiments, the concentration of CeCh in the glass composition and the resultant glass article may be less than or equal to 10 mol%, less than or equal to 7 mol%, or even less than or equal to 5 mol%. In embodiments, the concentration of CeCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 10 mol%, greater than or equal to 0 mol% and less than or equal to 7 mol%, greater than or equal to 0 mol% and less than or equal to 5 mol%, greater than or equal to 0.5 mol% and less than or equal to 10 mol%, greater than or equal to 0.5 mol% and less than or equal to 7 mol%, greater than or equal to 0.5 mol% and less than or equal to 5 mol%, greater than or equal to 1 mol% and less than or equal to 10 mol%, greater than or equal to 1 mol% and less than or equal to 7 mol%, greater than or equal to 1 mol% and less than or equal to 5 mol%, greater than or equal to 2 mol% and less than or equal to 10 mol%, greater than or equal to 2 mol% and less than or equal to 7 mol%, greater than or equal to 2 mol% and less than or equal to 5 mol%, greater than or equal to 3 mol% and less than or equal to 10 mol%, greater than or equal to 3 mol% and less than or equal to 7 mol%, or even greater than or equal to 3 mol% and less than or equal to 5 mol%, or any and all sub-ranges formed from any of these endpoints. In embodiments, the glass compositions and resultant glass article may be free or substantially free of CeCh.

[0150] The glass compositions and the resultant glass articles described herein may further comprise PbO to decrease the melting point, thereby improving meltability of the glass composition. In embodiments, the glass composition and the resultant glass article may comprise greater than or equal to 0 mol% and less than or equal to 0.1 mol% PbO. In embodiments, the glass composition and the resultant glass article may be free or substantially free of PbO.

[0151] The glass compositions and the resultant glass articles described herein may further include one or more fining agents. In embodiments, the fining agents may include, for example, SnO2. In embodiments, the glass composition and the resultant glass article may comprise greaterSP24-232 than or equal to 0 mol% and less than or equal to 1 mol% SnCh. In embodiments, the concentration of SnCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% or even greater than or equal to 0.1 mol%. In embodiments, the concentration of SnCh in the glass composition and the resultant glass article may be less than or equal to 1 mol%, less than or equal to 0.5 mol%, or even less than or equal to 0.2 mol%. In embodiments, the concentration of SnCh in the glass composition and the resultant glass article may be greater than or equal to 0 mol% and less than or equal to 1 mol%, greater than or equal to 0 mol% and less than or equal to 0.5 mol%, greater than or equal to 0 mol% and less than or equal to 0.2 mol%, greater than or equal to 0.1 mol% and less than or equal to 1 mol%, greater than or equal to 0.1 mol% and less than or equal to 0.5 mol%, or even greater than or equal to 0.1 mol% and less than or equal to 0.2 mol%, or any and all sub-ranges formed from any of these endpoints.

[0152] In embodiments, the glass compositions and resultant glass articles described herein may further include tramp materials such as MnO, MoOs, WO3, CdO, AS2O3, Sb2O3, sulfur-based compounds, such as sulfates, halogens, or combinations thereof. In embodiments, the glass compositions and resultant glass articles may be free or substantially free of individual tramp materials, a combination of tramp materials, or all tramp materials. For example, in embodiments, the glass compositions and resultant glass articles may be free or substantially free of MnO, MoOs, WO3, CdO, AS2O3, Sb2O3, sulfur-based compounds, such as sulfates, halogens, or combinations thereof.

[0153] In low B2O3 embodiments, a glass composition may comprise greater than or equal to 69 mol% and less than or equal 80.5 mol% SiO2; greater than or equal to 2.1 mol% and less than or equal to 5.8 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.5 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.4 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.9 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.3 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh, wherein Na2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%; Na2O / (Na2OSP24-232+ K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0154] In low AI2O3 embodiments, a glass composition may comprise greater than or equal to 67 mol% and less than or equal 80.2 mol% SiCh; greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.75 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.65 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 1.6 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; greater than or equal to 0 mol% and less than or equal to 5 mol% ZrO2; greater than or equal to 0 mol% and less than or equal to 10 mol% TiO2; and greater than or equal to 0 mol% and less than or equal to 0.1 mol% PbO, wherein Na2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.75 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1.8 mol% and less than or equal to10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0155] In ZrO2 embodiments, a glass composition may comprise greater than or equal to 67 mol% and less than or equal 85 mol% SiCh; greater than or equal to 0.1 mol% and less than or equal to 7.4 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 7 mol% B2O3; greater than or equal to 2.1 mol% and less than or equal to 12 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 9.9 mol% K2O; greater than or equal to 0 mol% and less than or equal to3.75 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; andSP24-232 greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrCh, wherein Na20 + K2O is greater than or equal to 2.1 mol% and less than or equal to 12 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9; CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%; SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

[0156] In embodiments, the glass composition may have a strain point greater than or equal to 400 °C and less than or equal to 800 °C, or even greater than or equal to 500 °C and less than or equal to 700 °C, or any and all sub-ranges formed from any of these endpoints.

[0157] In embodiments, the glass composition may have an annealing point greater than or equal to 400 °C and less than or equal to 900 °C, or even greater than or equal to 500 °C and less than or equal to 800 °C, or any and all sub-ranges formed from any of these endpoints.

[0158] In embodiments, the glass composition may have a softening point greater than or equal to 700 °C and less than or equal to 1100 °C or even greater than or equal to 800 °C and less than or equal to 1000 °C, or any and all sub-ranges formed from any of these endpoints.

[0159] In embodiments, the glass composition may have a CTE greater than or equal to 40 10’7 / °C and less than or equal to 80 10'7 / °C or even greater than or equal to 50 10'7 / °C and less than or equal to 70 10'7 / °C, or any and all sub-ranges formed from any of these endpoints.

[0160] In embodiments, the glass composition may have a density greater than or equal to 2.2 g / cm3and less than or equal to 2.7 g / cm3, or even greater than or equal to 2.3 g / cm3and less than or equal to 2.6 g / cm3, or any and all sub-ranges formed from any of these endpoints.

[0161] In embodiments, the glass composition may have a liquidus temperature greater than or equal to 800 °C and less than or equal to 1500 °C, greater than or equal to 900 °C and less than or equal to 1400 C, or even greater than or equal to 1000 °C and less than or equal to 1300 °C, or any and all sub-ranges formed from any of these endpoints.

[0162] In embodiments, the glass composition may have a liquidus viscosity greater than or equal to 5 kP and less than or equal to 8000 kP, greater than or equal to 50 kP and less than orSP24-232 equal to 4000 kP, greater than or equal to 100 kP and less than or equal to 2000 kP, greater than or equal to 500 kP and less than or equal to 1000 kP, or even greater than or equal to 5 kP and less than or equal to 500 kP, or any and all sub-ranges formed from any of these endpoints.

[0001] In embodiments, the glass composition may have a VFT A greater than or -2 and less than or equal to 0, a VFT B greater than or equal to 5700 and less than or equal to 10000, and a VFT To greater than or equal to 25 and less than or equal to 400.

[0163] In embodiments, the glass composition may have a 200 P temperature greater than or equal to 1500 °C and less than or equal to 2000 °C, or even greater than or equal to 1600 °C and less than or equal to 1900 °C, or any and all sub-ranges formed from any of these endpoints.

[0164] In embodiments, the glass composition may have a 700 P temperature greater than or equal to 1300 °C and less than or equal to 1800 °C, or even greater than or equal to 1400 °C and less than or equal to 1700 °C, or any and all sub-ranges formed from any of these endpoints.

[0165] The glass compositions described herein may be formed by mixing a batch of glass raw materials (e.g., powders of SiCh, AI2O3, alkali oxides, and alkaline earth oxides) such that the batch of glass raw materials has the desired composition. Thereafter, the batch of glass raw materials is heated to form a molten glass composition which is subsequently cooled and solidified to form the glass composition. During solidification (i.e., when the glass composition is plastically deformable), the glass composition may be shaped using standard forming techniques to shape the glass composition into a desired final form. Alternatively, the glass article may be shaped into a stock form, such as a sheet or tube, and subsequently reheated and formed into the desired final form.

[0166] The glass compositions described herein may be shaped into glass articles having various forms such as, for example, sheets and tubes. Given the chemical durability of the resultant glass articles, the glass compositions described herein are particularly well suited for use in the formation of glass articles used as pharmaceutical packages or pharmaceutical containers for containing pharmaceutical compositions, such as liquids and powders. For example, the glass compositions described herein may be used to form glass containers having various shape formsSP24-232 including, without limitation, Vacutainers®, cartridges, syringes, ampoules, bottles, flasks, phials, tubes, beakers, and vials.

[0167] As described herein, the glass articles described herein have sufficient chemical durability (e.g., greater than -175 mg / dm2, as measured according to ISO 695), such that the glass compositions may be used in pharmaceutical packaging. That is, the glass articles described herein are resistant to degradation in basic solutions as determined by the ISO 695 standard. In embodiments, the glass article may comprise a base resistance greater than -175 mg / dm2, greater than -150 mg / dm2, greater than -125 mg / dm2, greater than -100 mg / dm2, greater than -75 mg / dm2, greater than -50 mg / dm2, or even greater than -50 mg / dm2, as measured according to ISO 695.

[0168] The glass articles described herein may also be resistant to water and acidic solutions, as determined by the ISO 720 and DIN 12116 standards.

[0169] In embodiments, the glass article may comprise a water resistance less than or equal to 72 pg extracted equivalent of Na2O per gram of glass tested, less than or equal to 60 pg extracted equivalent of Na2O per gram of glass tested, less than or equal to 50 pg extracted equivalent of Na2O per gram of glass tested, or even less than or equal to 40 pg extracted equivalent of Na2O per gram of glass tested, as measured according to ISO 720.

[0170] In embodiments, the glass article may comprise an acidic resistance greater than or equal to -0.7 mg / dm2, greater than or equal to -0.5 mg / dm2, or even greater than or equal to -0.3 mg / dm2, as measured according to DIN 12116.Examples

[0171] In order that various embodiments be more readily understood, reference is made to the following examples, which are intended to illustrate various embodiments of the glass compositions described herein.

[0172] Tables 1-3 show example glass compositions (in terms of mol%) and the respective properties of the glass compositions. Glass articles were formed from example glass compositions E1-E88. Table 1 encompasses low B2O3 embodiments described herein. Table 2 encompasses low AI2O3 embodiments described herein. Table 3 encompasses ZrCE embodiments describedSP24-232 herein. It should be appreciated that the same composition may be included in multiple tables as the composition may fall under more than one embodiment.SP24-232

[0173] Table 1Example El E2 E3 E4 E5 E6 E7SiO277.30 77.30 78.30 77.30 77.30 78.30 76.30 Al2O34.50 4.50 4.00 4.50 4.50 3.50 4.50 B2O3Na2O 5.75 5.75 5.25 3.75 5.75 4.75 5.75 K2O 4.00 4.00 4.00 6.00 4.00 4.00 4.00 Li2O ZnO MgO 6.70 6.70 6.70 6.70 4.70 7.70 7.70 CaO 1.75 1.75 1.75 1.75 3.75 1.75 1.75 SrO BaO TiO2ZrO2Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 100.20 100.20 100.20 100.20 100.20 100.20 100.20 Na2O + K2O 9.75 9.75 9.25 9.75 9.75 8.75 9.75 Na2O / (Na2O + K2O) 0.59 0.59 0.57 0.38 0.59 0.54 0.59 CaO + MgO 8.45 8.45 8.45 8.45 8.45 9.45 9.45 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -61 -62 -61 -66 -62 -60 -64 ISO 720 (pg extracted equivalent 53 60 56 56 58 57 63 of Na2O per gram) DIN 12116 (mg / dm2) -0.5 -0.6 -0.6 -0.6 -0.6 -0.5 -0.6 Strain pt. (°C) 600 597 597 613 585 606 598 Anneal pt. (°C) 653 649 652 669 636 660 652 Softening pt. (°C) CTE (1B7 / °C) 65.2 65.6 64.3 66.6 68.1 60.9 67.1 Density (g / cm3) 2.387 2.387 2.381 2.384 2.401 2.381 2.396 Liquidus temp. (°C) 1120 1110 1100 1125 1105 1130 1130 Liquidus vise. (kP) 310 349 434 430 227 295 203 VFT A -2.209 -2.303 -2.262 -2.553 -2.053 -2.365 -2.234 VFTB 7155 7293 7190 7731 6725 7372 7014 VFT To190.9 180.5 189.8 180.7 197.2 189.1 200.1 T2OO (°C) 1777 1764 1765 1773 1742 1769 1747 T700 (°C) 1607 1597 1598 1613 1570 1604 1581SP24-232

[0174] Table 1 cont.Example E8 E9 E10 Ell E12 E13 E14SiO278.30 80.30 80.30 80.30 80.30 80.30 80.30 Al2O34.35 4.35 4.35 4.35 2.35 5.00 3.00 B2O3Na2O 7.67 7.67 5.67 5.67 5.67 4.18 4.68 K2O 2.00 2.00 2.00 4.00 2.00 4.18 4.68 Li2O ZnO MgO 5.30 3.30 5.30 3.30 6.30 3.11 3.61 CaO 2.16 2.16 2.16 2.16 3.16 3.11 3.61 SrO BaO TiO2ZrO2Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 99.98 99.98 99.98 99.98 99.98 100.06 100.06 Na2O + K2O 9.67 9.67 7.67 9.67 7.67 8.35 9.35 Na2O / (Na2O + K2O) 0.79 0.79 0.74 0.59 0.74 0.50 0.50 CaO + MgO 7.46 5.46 7.46 5.46 9.46 6.21 7.21 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -57 -59 -56 -62 -51 -57 -57 ISO 720 (pg extracted equivalent 60 55 44 56 64 41 71 of Na2O per gram) DIN 12116 (mg / dm2) -0.6 -0.5 -0.5 -0.5 -0.3 -0.6 -0.4 Strain pt. (°C) 579 571 625 581 591 626 572 Anneal pt. (°C) 632 622 679 635 642 682 623 Softening pt. (°C) 896 892 962 N / A(915) 909 971 890 CTE (10~7 / °C) 64.8 61.5 52.5 61.9 54.7 56.5 62.9 Density (g / cm3) 2.385 2.365 2.360 2.363 2.373 2.362 2.374 Liquidus temp. (°C) 1070 - 1150 - 1245 1165 1025 Liquidus vise. (kP) 446 - 369 - 26 351 937 VFT A -2.354 -2.428 -2.592 -2.629 -2.392 -2.824 -2.529 VFTB 7566 8023 8346 8599 7498 9182 7986 VFT To124.6 75.9 127.1 49.0 144.3 67.9 85.6 T2OO (°C) 1750 1772 1833 1793 1742 1860 1739 T700 (°C) 1580 1597 1662 1620 1576 1688 1572SP24-232

[0175] Table 1 cont.Example E15 E16 E17 E18 E19 E20 E21SiO278.30 78.30 78.00 78.00 78.00 78.00 78.00 Al2O33.50 3.50 4.00 4.00 4.00 4.00 4.00 B2O3Na2O 4.75 4.75 4.00 4.50 3.50 4.50 3.50 K2O 4.00 4.00 4.00 4.50 3.50 4.50 3.50 Li2O ZnO MgO 7.70 7.70 5.00 6.00 6.00 5.00 6.00 CaO 1.75 1.75 5.00 3.00 3.00 2.00 3.00 SrO BaO TiO2ZrO2Y2O32.00 2.00 La2O32.00 CeO20.25 0.25 0.25 0.25 0.25 0.25 0.25 SnO2F Total 100.25 100.25 100.25 100.25 100.25 100.25 100.25 Na2O + K2O 8.75 8.75 8.00 9.00 7.00 9.00 7.00 Na2O / (Na2O + K2O) 0.54 0.54 0.50 0.50 0.50 0.50 0.50 CaO + MgO 9.45 9.45 10.00 9.00 9.00 7.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -61 -60 -57 -63 -18 -16 -46 ISO 720 (pg extracted equivalent 55 57 51 55 39 40 33 of Na2O per gram) DIN 12116 (mg / dm2) -0.4 -0.5 -0.6 -0.5 -0.8 -0.7 -1.0 Strain pt. (°C) 612 613 619 611 684 657 662 Anneal pt. (°C) 667 666 670 662 737 708 716 Softening pt. (°C) CTE (10~7 / °C) 59.2 61.0 60.7 62.7 56.6 62.0 59.3 Density (g / cm3) 2.382 2.382 2.402 2.390 2.498 2.492 2.563 Liquidus temp. (°C) 1125 1130 1195 1140 >1295 1265 1285 Liquidus vise. (kP) 354 285 76 208 <19 41 16 VFT A -2.288 -2.263 -2.116 -2.185 -2.107 -2.894 -2.071 VFTB 7214 7117 6741 6987 6051 7829 5955 VFT To204.5 207.8 231.5 208.8 348.8 221.6 334.3 T2OO (°C) 1776 1767 1758 1766 1721 1729 1696 T700 (°C) 1610 1601 1590 1598 1571 1586 1546SP24-232

[0176] Table 1 cont.Example E22 E23 E24 E25 E26 E27 E28SiO278.00 78.00 78.00 78.00 78.00 78.00 80.30 Al2O34.00 4.00 4.00 4.00 4.00 4.00 4.35 B2O3Na2O 4.50 4.50 3.50 4.50 3.50 4.50 5.67 K2O 4.50 4.50 3.50 4.50 3.50 4.50 2.00 Li2O ZnO MgO 5.00 5.00 6.00 5.00 6.00 5.00 5.30 CaO 2.00 2.00 3.00 2.00 3.00 2.00 2.16 SrO BaO TiO22.00 2.00 ZrO22.00 2.00 Y2O3La2O32.00 . . . . . . CeO20.25 4.25 . . . . o.3O SnO20.20 0.20 0.20 0.20 F Total 100.25 102.25 100.20 100.20 100.20 100.20 100.08 Na2O + K2O 9.00 9.00 7.00 9.00 7.00 9.00 7.67 Na2O / (Na2O + K2O) 0.50 0.50 0.50 0.50 0.50 0.50 0.74 CaO + MgO 7.00 7.00 9.00 7.00 9.00 7.00 7.46 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -24 -46 -54 -58 -31 -32 -61 ISO 720 (pg extracted equivalent 46 56 38 44 31 35 40 of Na2O per gram) DIN 12116 (mg / dm2) -0.8 - -0.6 -0.6 -0.6 -0.6 -0.6 Strain pt. (°C) 628 - 642 602 681 652 621 Anneal pt. (°C) 678 - 693 653 733 707 673 Softening pt. (°C) 958 CTE (10~7 / °C) 65.0 64.5 54.4 61.0 52.8 58.4 Density (g / cm3) 2.556 - 2.398 2.394 2.439 2.432 2.372 Liquidus temp. (°C) 1295 - 1205 1110 1280 1150 Liquidus vise. (kP) 14 - 116 395 <53 438 VFT A -2.516 - -2.004 -2.155 -2.318 -2.393 VFTB 7090 - 6732 7158 7038 7283 VFT To228.7 - 252.3 186.6 281.0 243.5 T2OO (°C) 1701 - 1816 1793 1804 1795 T700 (°C) 1551 - 1641 1618 1644 1634SP24-232

[0177] Table 1 cont.Example E29 E30 E31 E32SiO280.30 80.30 80.30 77.00 Al2O34.35 4.35 4.35 3.00 B2O3Na2O 5.67 5.67 5.67 4.50 K2O 2.00 4.00 4.00 4.50 Li2O ZnO MgO 5.30 3.30 3.30 6.00 CaO 2.16 2.16 2.16 3.00 SrO BaO TiO2ZrO22.00 Y2O3La2O3CeO20.30 0.30 0.30 SnO20.20 F 5.67 - 2.50 Total 100.08 100.08 100.08 100.20 Na2O + K2O 7.67 9.67 9.67 9.00 Na2O / (Na2O + K2O) 0.74 0.59 0.59 0.50 CaO + MgO 7.46 5.46 5.46 9.00 SrO + ZnO + BaO 0 0 0 0 ISO 695 (mg / dm2) -76 -65 -71 -31 ISO 720 (pg extracted equivalent 30 47 45 62 of Na2O per gram) DIN 12116 (mg / dm2) -0.6 -0.5 -0.6 -0.5 Strain pt. (°C) 582 585 539 628 Anneal pt. (°C) 638 638 593 681 Softening pt. (°C) 906 923 866 CTE (10~7 / °C) 60.9 Density (g / cm3) 2.370 2.368 2.366 2.449 Liquidus temp. (°C) 1135 Liquidus vise. (kP) VFT A VFTB VFT ToT2OO (°C) T700 (°C)SP24-232

[0178] Table !Example E33 E34 E35 E36 E37 E38 E39SiO277.30 77.30 78.30 77.30 77.30 78.30 76.30 Al2O34.50 4.50 4.00 4.50 4.50 3.50 4.50 B2O3Na2O 5.75 5.75 5.25 3.75 5.75 4.75 5.75 K2O 4.00 4.00 4.00 6.00 4.00 4.00 4.00 Li2O ZnO MgO 6.70 6.70 6.70 6.70 4.70 7.70 7.70 CaO 1.75 1.75 1.75 1.75 3.75 1.75 1.75 SrO BaO TiO2ZrO2Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 100.20 100.20 100.20 100.20 100.20 100.20 100.20 Na2O + K2O 9.75 9.75 9.25 9.75 9.75 8.75 9.75 Na2O / (Na2O + K2O) 0.59 0.59 0.57 0.38 0.59 0.54 0.59 CaO + MgO 8.45 8.45 8.45 8.45 8.45 9.45 9.45 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -61 -62 -61 -66 -62 -60 -64 ISO 720 (pg extracted equivalent 53 60 56 56 58 57 63 of Na2O per gram) DIN 12116 (mg / dm2) -0.5 -0.6 -0.6 -0.6 -0.6 -0.5 -0.6 Strain pt. (°C) 600 597 597 613 585 606 598 Anneal pt. (°C) 653 649 652 669 636 660 652 Softening pt. (°C) CTE (10~7 / °C) 65.2 65.6 64.3 66.6 68.1 60.9 67.1 Density (g / cm3) 2.387 2.387 2.381 2.384 2.401 2.381 2.396 Liquidus temp. (°C) 1120 1110 1100 1125 1105 1130 1130 Liquidus vise. (kP) 310 349 434 430 227 295 203 VFT A -2.209 -2.303 -2.262 -2.553 -2.053 -2.365 -2.234 VFTB 7155 7293 7190 7731 6725 7372 7014 VFT To190.9 180.5 189.8 180.7 197.2 189.1 200.1 T2OO (°C) 1777 1764 1765 1773 1742 1769 1747 T700 (°C) 1607 1597 1598 1613 1570 1604 1581SP24-232

[0179] Table 2 cont.Example E40 E41 E42 E43 E44 E45 E46SiO278.30 78.30 78.30 78.30 78.00 78.00 78.00 Al2O34.35 4.35 3.50 3.50 4.00 4.00 4.00 B2O3Na2O 7.67 9.67 4.75 4.75 4.00 4.50 3.50 K2O 2.00 2.00 4.00 4.00 4.00 4.50 3.50 Li2O ZnO MgO 5.30 3.30 7.70 7.70 5.00 6.00 6.00 CaO 2.16 2.16 1.75 1.75 5.00 3.00 3.00 SrO BaO TiO2ZrO2Y2O32.00 La2O3CeO20.25 0.25 0.25 0.25 0.25 SnO20.20 0.20 . . . . . F Total 99.98 99.98 100.25 100.25 100.25 100.25 100.25 Na2O + K2O 9.67 11.67 8.75 8.75 8.00 9.00 7.00 Na2O / (Na2O + K2O) 0.79 0.83 0.54 0.54 0.50 0.50 0.50 CaO + MgO 7.46 5.46 9.45 9.45 10.00 9.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -57 -61 -61 -60 -57 -63 -18 ISO 720 (pg extracted equivalent 60 89 55 57 51 55 39 of Na2O per gram) DIN 12116 (mg / dm2) -0.6 -0.5 -0.4 -0.5 -0.6 -0.5 -0.8 Strain pt. (°C) 579 536 612 613 619 611 684 Anneal pt. (°C) 632 584 667 666 670 662 737 Softening pt. (°C) 896 835 CTE (10~7 / °C) 64.8 69.9 59.2 61.0 60.7 62.7 56.6 Density (g / cm3) 2.385 2.392 2.382 2.382 2.402 2.390 2.498 Liquidus temp. (°C) 1070 875 1125 1130 1195 1140 >1295 Liquidus vise. (kP) 446 7381 354 285 76 208 <19 VFT A -2.354 -2.408 -2.288 -2.263 -2.116 -2.185 -2.107 VFTB 7566 7781 7214 7117 6741 6987 6051 VFT To124.6 36.2 204.5 207.8 231.5 208.8 348.8 T2OO (°C) 1750 1689 1776 1767 1758 1766 1721 T700 (°C) 1580 1517 1610 1601 1590 1598 1571SP24-232

[0180] Table 2 cont.Example E47 E48 E49 E50 E51 E52 E53SiO278.00 78.00 78.00 78.00 78.00 78.00 78.00 Al2O34.00 4.00 4.00 4.00 2.00 2.00 4.00 B2O3Na2O 4.50 3.50 4.50 4.50 4.50 3.50 3.50 K2O 4.50 3.50 4.50 4.50 4.50 3.50 3.50 Li2O ZnO MgO 5.00 6.00 5.00 5.00 6.00 6.00 6.00 CaO 2.00 3.00 2.00 2.00 3.00 3.00 3.00 SrO BaO TiO22.00 ZrO22.00 2.00 Y2O32.00 . . . . . . La2O32.00 2.00 . . . . CeO20.25 0.25 0.25 4.25 SnO20.20 0.20 0.20 F Total 100.25 100.25 100.25 102.25 100.20 98.20 100.20 Na2O + K2O 9.00 7.00 9.00 9.00 9.00 7.00 7.00 Na2O / (Na2O + K2O) 0.50 0.50 0.50 0.50 0.50 0.50 0.50 CaO + MgO 7.00 9.00 7.00 7.00 9.00 9.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -16 -46 -24 -46 -55 -29 -31 ISO 720 (pg extracted equivalent 40 33 46 56 70 35 31 of Na2O per gram) DIN 12116 (mg / dm2) -0.7 -1.0 -0.8 - -0.4 -0.3 -0.6 Strain pt. (°C) 657 662 628 - 579 654 681 Anneal pt. (°C) 708 716 678 - 627 708 733 Softening pt. (°C) CTE (10~7 / °C) 62.0 59.3 65.0 64.5 62.4 51.7 52.8 Density (g / cm3) 2.492 2.563 2.556 - 2.406 2.432 2.439 Liquidus temp. (°C) 1265 1285 1295 - 1100 1185 1280 Liquidus vise. (kP) 41 16 14 - 134 165 <53 VFT A -2.894 -2.071 -2.516 - -2.011 -2.272 -2.318 VFTB 7829 5955 7090 - 6328 6876 7038 VFT To221.6 334.3 228.7 - 213.6 267.0 281.0 T2OO (°C) 1729 1696 1701 - 1681 1771 1804 T700 (°C) 1586 1546 1551 - 1516 1611 1644SP24-232

[0181] Table 2 cont.Example E54 E55 E56 E57 E58 E59 E60SiO278.00 77.90 78.00 76.00 78.00 76.00 79.40 Al2O34.00 1.50 2.00 2.00 2.00 2.00 2.00 B2O3Na2O 4.50 5.60 4.50 4.50 4.50 4.50 3.60 K2O 4.50 3.60 4.50 4.50 4.50 4.50 3.60 Li2O ZnO MgO 5.00 6.10 6.00 6.00 6.00 6.00 3.10 CaO 2.00 3.10 3.00 3.00 3.00 3.00 6.10 SrO BaO TiO22.00 2.00 ZrO22.00 2.00 2.00 4.00 - 2.00 2.00 Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 100.20 100.00 100.20 100.20 100.20 100.20 100.00 Na2O + K2O 9.00 9.20 9.00 9.00 9.00 9.00 7.20 Na2O / (Na2O + K2O) 0.50 0.61 0.50 0.50 0.50 0.50 0.50 CaO + MgO 7.00 9.20 9.00 9.00 9.00 9.00 9.20 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -32 -28 -29 -20 -52 -30 -29 ISO 720 (pg extracted equivalent 35 55 47 38 63 48 42 of Na2O per gram) DIN 12116 (mg / dm2) -0.6 -0.4 -0.4 -0.5 -0.4 -0.6 -0.5 Strain pt. (°C) 652 601 620 657 579 614 638 Anneal pt. (°C) 707 652 673 709 628 663 689 Softening pt. (°C) 943 CTE (10~7 / °C) 58.4 60.2 58.7 57.5 61.7 60.0 53.0 Density (g / cm3) 2.432 2.447 2.443 2.512 2.405 2.471 2.449 Liquidus temp. (°C) 1150 1135 1125 - 1130 1135 1210 Liquidus vise. (kP) 438 112 249 <13 83 117 57 VFT A -2.393 -2.436 -2.507 -2.553 -2.031 -2.378 -2.432 VFTB 7283 6893 7147 6806 6388 6695 7023 VFT To243.5 214.2 220.7 281.7 210.8 236.0 233.0 T2OO (°C) 1795 1669 1707 1684 1686 1667 1717 T700 (°C) 1634 1519 1556 1542 1521 1518 1564SP24-232

[0182] Table 2 cont.Example E61 E62 E63 E64 E65 E66 E67SiO279.40 79.40 77.00 79.00 79.50 80.00 78.00 Al2O32.00 2.00 3.00 1.00 0.50 2.00 1.00 B2O3Na2O 4.60 5.60 4.50 4.50 4.50 4.50 4.50 K2O 2.60 1.60 4.50 4.50 4.50 4.50 4.50 Li2O ZnO MgO 6.10 6.10 6.00 6.00 6.00 6.00 6.00 CaO 3.10 3.10 3.00 3.00 3.00 3.00 3.00 SrO BaO TiO2ZrO22.00 2.00 2.00 2.00 2.00 - 3.00 Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 100.00 100.00 100.20 100.20 100.20 100.20 100.20 Na2O + K2O 7.20 7.20 9.00 9.00 9.00 9.00 9.00 Na2O / (Na2O + K2O) 0.64 0.78 0.50 0.50 0.50 0.50 0.50 CaO + MgO 9.20 9.20 9.00 9.00 9.00 9.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -29 -29 -31 -29 -29 -60 -24 ISO 720 (pg extracted equivalent 39 45 62 72 83 91 62 of Na2O per gram) DIN 12116 (mg / dm2) -0.4 -0.4 -0.5 -0.4 -0.4 -0.4 -0.5 Strain pt. (°C) 638 628 628 597 591 568 620 Anneal pt. (°C) 690 680 681 650 644 621 674 Softening pt. (°C) 951 939 CTE (10~7 / °C) 51.5 50.8 60.9 60.8 61.4 62.8 58.6 Density (g / cm3) 2.436 2.440 2.449 2.437 2.436 2.376 2.475 Liquidus temp. (°C) 1235 1245 1135 1115 1175 1125 1090 Liquidus vise. (kP) 40 33 - VFT A -2.546 -2.127 . . . . . VFTB 7478 6475 . . . . . VFT To188.7 271.2 . . . . . T2OO (°C) 1732 1733 . . . . . T700 (°C) 1576 1573 . . . . .SP24-232

[0183] Table 2 cont.Example E68 E69SiO278.00 78.00 Al2O32.00 2.00 B2O3Na2O 7.00 2.00 K2O 2.00 7.00 Li2O ZnO MgO 6.00 6.00 CaO 3.00 3.00 SrO BaO TiO2ZrO22.00 2.00 Y2O3La2O3CeO2SnO20.20 0.20 F Total 100.20 100.20 Na2O + K2O 9.00 9.00 Na2O / (Na2O + K2O) 0.78 0.22 CaO + MgO 9.00 9.00 SrO + ZnO + BaO 0 0 ISO 695 (mg / dm2) -29 -32 ISO 720 (gg extracted equivalent 67 62 of Na2O per gram) DIN 12116 (mg / dm2) -0.4 -0.4 Strain pt. (°C) 595 644 Anneal pt. (°C) 647 698 Softening pt. (°C) CTE (10~7 / °C) 61.2 60.5 Density (g / cm3) 2.447 2.439 Liquidus temp. (°C) 1085 1120 Liquidus vise. (kP) 250 492 VFT A -2.432 -2.724 VFTB 6831 7462 VFT TO212.6 233.3 T2OO (°C) 1656 1718 T700 (°C) 1507 1573SP24-232

[0184] Table 3Example E70 E71 E72 E73 E74 E75 E76SiO278.00 78.00 78.00 77.90 78.00 76.00 76.00 Al2O32.00 4.00 4.00 1.50 2.00 2.00 2.00 B2O3Na2O 3.50 3.50 4.50 5.60 4.50 4.50 4.50 K2O 3.50 3.50 4.50 3.60 4.50 4.50 4.50 Li2O ZnO MgO 6.00 6.00 5.00 6.10 6.00 6.00 6.00 CaO 3.00 3.00 2.00 3.10 3.00 3.00 3.00 SrO BaO TiO22.00 ZrO22.00 2.00 2.00 2.00 2.00 4.00 2.00 Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 98.20 100.20 100.20 100.00 100.20 100.20 100.20 Na2O + K2O 7.00 7.00 9.00 9.20 9.00 9.00 9.00 Na2O / (Na2O + K2O) 0.50 0.50 0.50 0.61 0.50 0.50 0.50 CaO + MgO 9.00 9.00 7.00 9.20 9.00 9.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -29 -31 -32 -28 -29 -20 -30 ISO 720 (pg extracted equivalent 35 31 35 55 47 38 48 of Na2O per gram) DIN 12116 (mg / dm2) -0.3 -0.6 -0.6 -0.4 -0.4 -0.5 -0.6 Strain pt. (°C) 654 681 652 601 620 657 614 Anneal pt. (°C) 708 733 707 652 673 709 663 Softening pt. (°C) CTE (10~7 / °C) 51.7 52.8 58.4 60.2 58.7 57.5 60.0 Density (g / cm3) 2.432 2.439 2.432 2.447 2.443 2.512 2.471 Liquidus temp. (°C) 1185 1280 1150 1135 1125 - 1135 Liquidus vise. (kP) 165 <53 438 112 249 <13 117 VFT A -2.272 -2.318 -2.393 -2.436 -2.507 -2.553 -2.378 VFTB 6875.9 7037.6 7283.1 6893.5 7147.0 6806.1 6695.4 VFT To267.0 281.0 243.5 214.2 220.7 281.7 236.0 T2OO (°C) 1771 1804 1795 1669 1707 1684 1667 T700 (°C) 1611 1644 1634 1519 1556 1542 1518SP24-232

[0185] Table 3 cont.Example E77 E78 E79 E80 E81 E82 E83SiO279.40 79.40 77.40 75.40 79.40 79.40 77.00 Al2O32.00 2.00 2.00 2.00 2.00 2.00 3.00 B2O32.00 4.00 Na2O 3.60 3.60 3.60 3.60 4.60 5.60 4.50 K2O 3.60 3.60 3.60 3.60 2.60 1.60 4.50 Li2O ZnO MgO 3.10 0.00 6.10 6.10 6.10 6.10 6.00 CaO 6.10 9.20 3.10 3.10 3.10 3.10 3.00 SrO BaO TiO2ZrO22.00 2.00 2.00 2.00 2.00 2.00 2.00 Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 0.20 0.20 F Total 100.00 100.00 100.00 100.00 100.00 100.00 100.20 Na2O + K2O 7.20 7.20 7.20 7.20 7.20 7.20 9.00 Na2O / (Na2O + K2O) 0.50 0.50 0.50 0.50 0.64 0.78 0.50 CaO + MgO 9.20 9.20 9.20 9.20 9.20 9.20 9.00 SrO + ZnO + BaO 0 0 0 0 0 0 0 ISO 695 (mg / dm2) -29 -31 -33 -37 -29 -29 -31 ISO 720 (pg extracted equivalent 42 48 37 35 39 45 62 of Na2O per gram) DIN 12116 (mg / dm2) -0.5 -0.7 -0.4 -0.7 -0.4 -0.4 -0.5 Strain pt. (°C) 638 642 610 594 638 628 628 Anneal pt. (°C) 689 690 662 643 690 680 681 Softening pt. (°C) 943 927 923 888 951 939 CTE (10~7 / °C) 53.0 56.4 49.9 50.7 51.5 50.8 60.9 Density (g / cm3) 2.449 2.469 2.434 2.431 2.436 2.440 2.449 Liquidus temp. (°C) 1210 1240 1135 1165 1235 1245 1135 Liquidus vise. (kP) 57 21 215 44 40 33 VFT A -2.432 -2.272 -2.439 -2.556 -2.546 -2.127 VFTB 7022.6 6520.1 7043.1 7210.5 7478.4 6474.5 VFT To233.0 249.7 228.8 163.1 188.7 271.2 T2OO (°C) 1717 1675 1715 1648 1732 1733 T700 (°C) 1564 1524 1562 1498 1576 1573SP24-232

[0186] Table 3 cont.Example E84 E85 E86 E87 E88SiO279.00 79.50 78.00 78.00 78.00 Al2O31.00 0.50 1.00 2.00 2.00 B2O3Na2O 4.50 4.50 4.50 7.00 4.50 K2O 4.50 4.50 4.50 2.00 4.50 Li2O ZnO MgO 6.00 6.00 6.00 6.00 CaO 3.00 3.00 3.00 3.00 9.00 SrO BaO TiO2ZrO22.00 2.00 3.00 2.00 2.00 Y2O3La2O3CeO2SnO20.20 0.20 0.20 0.20 0.20 F Total 100.20 100.20 100.20 100.20 100.20 Na2O + K2O 9.00 9.00 9.00 9.00 9.00 Na2O / (Na2O + K2O) 0.50 0.50 0.50 0.78 0.50 CaO + MgO 9.00 9.00 9.00 9.00 9.00 SrO + ZnO + BaO 0 0 0 0 0 ISO 695 (mg / dm2) -29 -29 -24 -29 -31 ISO 720 (pg extracted equivalent 72 83 62 67 77 of Na2O per gram) DIN 12116 (mg / dm2) -0.4 -0.4 -0.5 -0.4 -0.4 Strain pt. (°C) 597 591 620 595 606 Anneal pt. (°C) 650 644 674 647 654 Softening pt. (°C) CTE (10~7 / °C) 60.8 61.4 58.6 61.2 66.9 Density (g / cm3) 2.437 2.436 2.475 2.447 2.485 Liquidus temp. (°C) 1115 1175 1090 1085 1155 Liquidus vise. (kP) 250 39 VFT A -2.432 -2.077 VFTB 6831.3 5876.2 VFT To212.6 273.3 T2OO (°C) 1656 1615 T700 (°C) 1507 1467SP24-232

[0187] As indicated by the example glass compositions in Tables 1-3, the glass compositions described herein sufficient chemical durability (e.g., greater than -175 mg / dm2, as measured according to ISO 695).

[0188] It will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments described herein without departing from the spirit and scope of the claimed subject matter. Thus, it is intended that the specification cover the modifications and variations of the various embodiments described herein provided such modification and variations come within the scope of the appended claims and their equivalents.

Claims

SP24-232CLAIMS1. A glass composition comprising: greater than or equal to 69 mol% and less than or equal 80.5 mol% Si O2 ; greater than or equal to 2.1 mol% and less than or equal to 5.8 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.5 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.4 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.9 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.3 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh, whereinNa2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.5 mol%;Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9;CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%;SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

2. The glass composition of claim 1, wherein the glass composition is free or substantially free of B2O3.

3. The glass composition of claim 1 or claim 2, wherein the glass composition comprises greater than or equal to 2.3 mol% and less than or equal to 5.0 mol% AI2O3.SP24-2324. The glass composition of any one of claims 1-3, wherein the glass composition comprises greater than or equal to 75 mol% and less than or equal to 80 mol% SiCh.

5. The glass composition of any one of claims 1-4, wherein Na2O + K2O is greater than or equal to 3 mol% and less than or equal to 10 mol%.

6. The glass composition of any one of claims 1-5, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.

7. The glass composition of any one of claims 1-6, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% Na2O.

8. The glass composition of any one of claims 1-7, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.

9. The glass composition of any one of claims 1-8, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

10. The glass composition of any one of claims 1-9, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.

11. The glass composition of any one of claims 1-10, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.

12. The glass composition of any one of claims 1-11, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 7 mol% CaO.

13. The glass composition of any one of claims 1-12, wherein the glass composition comprises greater than 0 mol% and less than or equal to 3 mol% ZrO2.SP24-23214. The glass composition of any one of claims 1-13, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiCh.

15. The glass composition of any one of claims 1-14, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% Y2O3.

16. The glass composition of any one of claims 1-15, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% La2Os.

17. The glass composition of any one of claims 1-16, wherein the glass composition comprises greater than 0 mol% and less than or equal to 10 mol% CeCh.

18. The glass composition of any one of claims 1-17, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

19. A glass article comprising the glass composition of any one of claims 1-18.

20. The glass article of claim 19, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

21. The glass article of claim 19 or claim 20, wherein the glass article is a pharmaceutical package.

22. A glass composition comprising: greater than or equal to 67 mol% and less than or equal 80.2 mol% SiO2; greater than or equal to 0.1 mol% and less than or equal to 6 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 0.9 mol% B2O3; greater than or equal to 0.1 mol% and less than or equal to 11.75 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 11.65 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO;SP24-232 greater than or equal to 1.6 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; greater than or equal to 0 mol% and less than or equal to 5 mol% ZrCh; greater than or equal to 0 mol% and less than or equal to 10 mol% TiCh; and greater than or equal to 0 mol% and less than or equal to 0.1 mol% PbO, whereinNa2O + K2O is greater than or equal to 0.5 mol% and less than or equal to 11.75 mol%;Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9;CaO + MgO is greater than or equal to 1.8 mol% and less than or equal to 10.75 mol%;SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

23. The glass composition of claim 22, wherein the glass composition is free or substantially free of B2O3.

24. The glass composition of claim 22 or claim 23, wherein the glass composition comprises greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3.

25. The glass composition of any one of claims 22-24, wherein the glass composition comprises greater than or equal to 75 mol% and less than or equal to 80 mol% SiCh.

26. The glass composition of any one of claims 22-25, wherein Na2O + K2O is greater than or equal to 3 mol% and less than or equal to 11 mol%.

27. The glass composition of any one of claims 22-26, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.SP24-23228. The glass composition of any one of claims 22-27, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% Na20.

29. The glass composition of any one of claims 22-28, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.

30. The glass composition of any one of claims 22-29, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

31. The glass composition of any one of claims 22-30, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.

32. The glass composition of any one of claims 22-31, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.

33. The glass composition of any one of claims 22-32, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 7 mol% CaO.

34. The glass composition of any one of claims 22-33, wherein the glass composition comprises greater than 0 mol% and less than or equal to 4 mol% ZrO2.

35. The glass composition of any one of claims 22-34, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiO2.

36. The glass composition of any one of claims 22-35, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% Y2O3.

37. The glass composition of any one of claims 22-36, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% La2Os.SP24-23238. The glass composition of any one of claims 22-37, wherein the glass composition comprises greater than 0 mol% and less than or equal to 10 mol% CeCh.

39. The glass composition of any one of claims 22-38, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

40. A glass article comprising the glass composition of any of claims 22-39.

41. The glass article of claim 40, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

42. The glass article of claim 40 or claim 41, wherein the glass article is a pharmaceutical package.

43. A glass composition comprising: greater than or equal to 67 mol% and less than or equal 85 mol% SiO2; greater than or equal to 0.1 mol% and less than or equal to 7.4 mol% AI2O3; greater than or equal to 0 mol% and less than or equal to 7 mol% B2O3; greater than or equal to 2.1 mol% and less than or equal to 12 mol% Na2O; greater than or equal to 0 mol% and less than or equal to 9.9 mol% K2O; greater than or equal to 0 mol% and less than or equal to 3.75 mol% Li2O; greater than or equal to 0 mol% and less than or equal to 0.75 mol% ZnO; greater than or equal to 0 mol% and less than or equal to 15 mol% MgO; greater than or equal to 0.2 mol% and less than or equal to 15 mol% CaO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% SrO; greater than or equal to 0 mol% and less than or equal to 0.75 mol% BaO; and greater than or equal to 0.1 mol% and less than or equal to 4.75 mol% ZrCh, whereinNa2O + K2O is greater than or equal to 2.1 mol% and less than or equal to 12 mol%; Na2O / (Na2O + K2O) is greater than or equal to 0 and less than or equal to 0.9;CaO + MgO is greater than or equal to 1 mol% and less than or equal to 10.75 mol%;SP24-232SrO + ZnO + BaO is greater than or equal to 0 mol% and less than or equal to 0.75 mol%; and a total sum of concentrations of oxide components in the glass composition is equal to 100 mol%.

44. The glass composition of claim 43, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% B2O3.

45. The glass composition of claim 43 or claim 44, wherein the glass composition comprises greater than or equal to 0.5 mol% and less than or equal to 5 mol% AI2O3.

46. The glass composition of any one of claims 43-45, wherein the glass composition comprises greater than or equal to 73 mol% and less than or equal to 81 mol% SiCh.

47. The glass composition of any one of claims 43-46, wherein Na2O + K2O is greater than or equal to 5 mol% and less than or equal to 11 mol%.

48. The glass composition of any one of claims 43-47, wherein Na2O / (Na2O + K2O) is greater than or equal to 0.2 and less than or equal to 0.8.

49. The glass composition of any one of claims 43-48, wherein the glass composition comprises greater than or equal to 3 mol% and less than or equal to 10 mol% Na2O.

50. The glass composition of any one of claims 43-49, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 9 mol% K2O.

51. The glass composition of any one of claims 43-50, wherein CaO + MgO is greater than or equal to 3 mol% and less than or equal to 10 mol%.

52. The glass composition of any one of claims 43-51, wherein the glass composition is free or substantially free of SrO, ZnO, and BaO.SP24-23253. The glass composition of any one of claims 43-52, wherein the glass composition comprises greater than or equal to 2 mol% and less than or equal to 10 mol% MgO.

54. The glass composition of any one of claims 43-53, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 10 mol% CaO.

55. The glass composition of any one of claims 43-54, wherein the glass composition comprises greater than or equal to 1 mol% and less than or equal to 4 mol% ZrCh.

56. The glass composition of any one of claims 43-55, wherein the glass composition comprises greater than 0 mol% and less than or equal to 5 mol% TiCh.

57. The glass composition of any one of claims 43-56, wherein the glass composition comprises greater than 0 mol% and less than or equal to 1 mol% SnCh.

58. A glass article comprising the glass composition of any one of claims 43-57.

59. The glass article of claim 58, wherein the glass article comprises a base resistance greater than -175 mg / dm2, as measured according to ISO 695.

60. The glass article of claim 58 or claim 59, wherein the glass article is a pharmaceutical package.

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