| 摘要 |
PROBLEM TO BE SOLVED: To create glass that is resistant to scratches, has high drop impact strength, and is light in weight without ion exchange treatment.SOLUTION: The glass according to the present invention comprises, as a glass composition by mass%, SiO50-70%, AlO0-20%, BO15-30%, LiO+NaO+KO 0-3%, and MgO+CaO+SrO+BaO 0-12%.SELECTED DRAWING: None |
