GLASS COMPOSITION

PROBLEM TO BE SOLVED: To provide a glass composition in which the use amounts of arsenic oxide and antimony oxide having a large environmental load are small, and residual bubbles are few.SOLUTION: The glass composition is, in terms of mass%, 40 to 70% SiO, 5 to 20% BO, 10 to 25% AlO, 0 to 10% MgO,...

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Bibliographische Detailangaben
Hauptverfasser:	NAGASHIMA YASUKIMI, KISHIMOTO SHOICHI, NIIDA HARUKI, KOYAMA AKIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a glass composition in which the use amounts of arsenic oxide and antimony oxide having a large environmental load are small, and residual bubbles are few.SOLUTION: The glass composition is, in terms of mass%, 40 to 70% SiO, 5 to 20% BO, 10 to 25% AlO, 0 to 10% MgO, 0 to 20% CaO, 0 to 20% SrO, 0 to 10% BaO, 0 to 0.5% LiO, 0 to 0.5% NaO, 0 to 0.5% KO, >0% and ≤1.5% Cl, and >0.06% LiO+NaO+KO. The glass composition can suitably be manufactured by using chlorides as part of glass raw materials.