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    • 74. 发明申请
    • LEAD-FREE CRYSTAL GLASS WITH THE REFRACTIVE INDEX HIGHER THAN 1,52
    • 无铅水晶玻璃与折射率高于1,52
    • WO1995013993A1
    • 1995-05-26
    • PCT/CZ1993000027
    • 1993-11-26
    • VYSOKA S¿KOLA CHEMICKO - TECHNOLOGICKARADA, MiroslavS¿AS¿EK, LadislavS¿AS¿EK, Ladislav
    • VYSOKA S¿KOLA CHEMICKO - TECHNOLOGICKA
    • C03C03/087
    • C03C3/095C03C3/087C03C3/11C03C4/0028
    • Lead-free cyrstal glass with the refractive index higher than 1,52, designated for the production of man-made and machine-made utility glass especially of luxurious character with high light transmittance, perfect clearness and elevated hydrolitical resistance which is suitable particularly for decorating by cutting, engraving and other decorating techniques and is well polishable by using both chemical and mechanical processes, containing in % by weight from 50 to 75 of silicon dioxide SiO2, from 0,05 to 10 of aluminium oxide Al2O3, from 0,05 to 15 of zirconium dioxide ZrO2, from 0,001 to 2,5 of hafnium dioxide HfO2, from 0,001 to 5 of titanium dioxide TiO2, from 2 to 9 of calcium oxide CaO, from 0,001 to 6 of magnesium oxide MgO, from 0,05 to 10 of zinc oxide ZnO, from 0,1 to 10 of potassium oxide K2O, from 5 to 16 of sodium oxide Na2O, from 0,05 to 2,5 of entimony trioxide Sb2O3 and the total amount of iron expressed as iron trioxide Fe2O3 ranges from 0,005 to 0,035 % by weight, while this glass further contains in % by weight from 0,001 to 1,25 of sulphates SO4 and chlorides Cl and from 0,000005 to 0,8105 at least one component from the group comprising erbium oxide Er2O3, neodymium oxide Nd2O3, ceric oxide CeO2, cobaltous oxide CoO, nickel oxide NiO, manganese oxides and selenium compounds. In any case, sum of all components mentioned totals at lest 99,6 % by weight.
    • 折射率高于1,52的无铅水晶玻璃,专门生产人造和机械玻璃,特别是具有高透光度,完美清晰度和高水平耐水性的豪华型玻璃,特别适合装饰 通过切割,雕刻和其他装饰技术,并且通过使用化学和机械方法都很好地抛光,其包含重量百分比为50至75的二氧化硅SiO 2,0.05至10的氧化铝Al 2 O 3,从0.05到 15的二氧化锆ZrO 2,0.001〜2.5的二氧化铪HfO 2,0.001〜5的二氧化钛TiO 2,2〜9的氧化钙CaO,0.001〜6的氧化镁MgO,0.05〜10 的氧化锌ZnO,0.1至10的氧化钾K 2 O,5至16的氧化钠Na 2 O,0.05至2.5的三氧化锑Sb 2 O 3,并且以三氧化二铁Fe 2 O 3表示的铁的总量范围为 0.005-0.035%(重量), 该玻璃还含有以重量%计从0.001至1,25的硫酸盐SO 4 2-和氯化物Cl - 和从0.000005至0,8105的至少一种组分,所述组分包括氧化铒Er2O3,钕 氧化物Nd2O3,氧化铈CeO2,氧化钴CoO,氧化镍NiO,氧化锰和硒化合物。 无论如何,所提及的所有组分的总和为99,6重量%。