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    Publication numberWO2009004710 A1
    Publication typeApplication
    Application numberPCT/JP2007/063256
    Publication dateJan 8, 2009
    Filing dateJul 2, 2007
    Priority dateJul 2, 2007
    Publication numberPCT/2007/63256, PCT/JP/2007/063256, PCT/JP/2007/63256, PCT/JP/7/063256, PCT/JP/7/63256, PCT/JP2007/063256, PCT/JP2007/63256, PCT/JP2007063256, PCT/JP200763256, PCT/JP7/063256, PCT/JP7/63256, PCT/JP7063256, PCT/JP763256, WO 2009/004710 A1, WO 2009004710 A1, WO 2009004710A1, WO-A1-2009004710, WO2009/004710A1, WO2009004710 A1, WO2009004710A1
    InventorsJie Fu
    ApplicantOhara Inc.
    Export CitationBiBTeX, EndNote, RefMan
    Patent Citations (6), Referenced by (4), Classifications (10), Legal Events (4)
    External Links: Patentscope, Espacenet
    Glass composition
    WO 2009004710 A1
    Abstract
    A glass composition that belonging to a glass series with none of lead component simultaneously containing a rare earth oxide and fluorine, has a shielding capacity comparable to lead glass, being high in surface hardness and extremely high in transparency within visible region. The glass composition is one containing, by mass% on oxide basis, 1 to 85% Ln2O3 (Ln is at least one member selected from the group consisting of La, Y, Gd, Tb, Dy, Yb and Lu) and 0.1 to 20% fluorine and exhibiting a lead equivalent of 0.03 mmPb/mm or higher to 150 kV X-rays. Further, by incorporating SiO2 and/or B2O3 and/or GeO2 and/or P2O5 in a total amount of 10 to 70%, there can be obtained a glass composition that is stable with respect to devitrification, having high surface hardness, and that excels in transparency and radiation ray shielding capacity.
    Patent Citations
    Cited PatentFiling datePublication dateApplicantTitle
    JP2000143430A * Title not available
    JP2007063064A * Title not available
    JPH10226533A * Title not available
    JPS5734044A * Title not available
    JPS56169150A * Title not available
    JPS61215234A * Title not available
    * Cited by examiner
    Referenced by
    Citing PatentFiling datePublication dateApplicantTitle
    WO2011084578A1Dec 16, 2010Jul 14, 2011Dsm Ip Assets, B.V.Substrate-based additive fabrication process
    WO2016121655A1 *Jan 22, 2016Aug 4, 2016日本電気硝子株式会社Glass material and method for manufacturing same
    CN104558703A *Nov 27, 2014Apr 29, 2015厦门虹鹭钨钼工业有限公司Tungsten-base composite material applied to ray shielding and preparation method thereof
    US8168693Feb 11, 2011May 1, 2012Schott AgX-ray opaque barium-free glasses and uses thereof
    * Cited by examiner
    Classifications
    International ClassificationC03C3/115, C03C3/112, C03C4/08, C03C3/253, C03C3/247, C03C3/23
    Cooperative ClassificationC03C4/087, C03C3/068
    European ClassificationC03C3/068, C03C4/08F
    Legal Events
    DateCodeEventDescription
    Mar 4, 2009121Ep: the epo has been informed by wipo that ep was designated in this application
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    Jul 28, 2010122Ep: pct application non-entry in european phase
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