ALKALI BOROSILICATE GLASS, CURVED GLASS, LAMINATED GLASS, ARCHITECTURAL WINDOW GLASS AND VEHICLE WINDOW GLASS
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United States of America
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Apr 10, 2025
app pub date -
Dec 18, 2024
filing date -
Dec 18, 2024
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Abstract
The present invention relates to an alkali borosilicate glass, in which a content of total iron in terms of Fe2O3 is 0.03% or more in mol % in terms of oxides, a ratio of three-coordinated boron to a total amount of the three-coordinated boron and four-coordinated boron is 61% or less, the alkali borosilicate glass is substantially free of Se and CoO, when a thickness of the alkali borosilicate glass is converted into 2.0 mm, a solar transmittance Te specified in ISO-9050:2003 is 90% or less, a dominant wavelength Dw measured using a standard C light source specified in JIS Z 8701:1999 is 520 nm or more and 574 nm or less, and an excitation purity Pe measured using the standard C light source specified in JIS Z 8701:1999 is 4.0% or less.
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