PROCESS FOR PRODUCING GLASS

PROBLEM TO BE SOLVED: To provide a process for producing glass, by which high clarifying effect can be obtained without using arsenic or antimony. SOLUTION: The process for producing glass comprises melting a raw material batch after incorporating water into the batch or incorporating water into mol...

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Bibliographische Detailangaben
Hauptverfasser:	KURACHI JUNJI, CHIAKI YUTAKA, YAMAMOTO KAZUHIRO, SETO HIROMITSU, MIYABE DAISUKE, KOYAMA AKIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a process for producing glass, by which high clarifying effect can be obtained without using arsenic or antimony. SOLUTION: The process for producing glass comprises melting a raw material batch after incorporating water into the batch or incorporating water into molten glass and then clarifying the molten glass in an atmosphere having a water vapor partial pressure lower than that of the atmosphere in melting so as to yield glass having a β-OH value of at least 0.2 mm-1after melting. The clarifying process is preferably performed in a reduced-pressure atmosphere. COPYRIGHT: (C)2008,JPO&INPIT