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US 2026/0176194 A1Published application
Glass
AssigneeAGC Inc.
InventorsRikiya KADO, Seiki OHARA, Yuha KOBAYASHI, Mamoru ISOBE
Life of this patent
Estimating the term…
Abstract
A decrease in light transmittance is suppressed even after exposure to an acid while suppressing deflection. In the glass (10), a Young's modulus is 90 GPa or more, and an arithmetic average roughness Ra (nm) of a surface defined in JIS B 0601:2001 is equal to or less than a recycling parameter value shown in Formula (1).
Claims7
A glass, wherein a Young's modulus is 90 GPa or more, and an arithmetic average roughness Ra (nm) of a surface, defined in JIS B 0601:2001 is equal to or less than a recycling parameter value A shown in Formula (1):
- A
- =
- (
- 13
- ×
- [
- SiO
- 2
- ]
- -
- 3
- ×
- [
- Al
- 2
-
- O
- 3
- ]
- -
- [
- B
- 2
-
- O
- 3
- ]
- -
- 7
- ×
- [
- MgO
- ]
- -
- 4
- ×
- [
- CaO
- ]
- -
- 0.5
- ×
- [
- SrO
- ]
- -
- [
- BaO
- ]
- -
- [
- R
- 2
-
- O
- ]
- )
- /
- 1000
- ,
- (
- 1
- )
- where [SiO2] is a content of SiO2 in terms of mol % on an oxide basis,
- [Al2O3] is a content of Al2O3 in terms of mol % on an oxide basis,
- [B2O3] is a content of B2O3 in terms of mol % on an oxide basis,
- [MgO] is a content of MgO in terms of mol % on an oxide basis,
- [Cao] is a content of Cao in terms of mol % on an oxide basis,
- [Sro] is a content of Sro in terms of mol % on an oxide basis,
- [Bao] is a content of Bao in terms of mol % on an oxide basis, and
- [R2O] is a total value of contents of monovalent element oxides contained in the glass in terms of mol % on an oxide basis.
68 more elements
Dependencies are inferred from the claim text.