发明名称 |
SUBSTRAT AUS VERSTÄRKTEM GLAS |
摘要 |
PCT No. PCT/FR95/01296 Sec. 371 Date Aug. 19, 1996 Sec. 102(e) Date Aug. 19, 1996 PCT Filed Oct. 5, 1995 PCT Pub. No. WO96/11888 PCT Pub. Date Apr. 25, 1996The invention relates to glass substrates intended for use as a support in data storage units, reinforced by surface ion exchanges and whose matrix comprises the constituents given hereinafter in the following weight proportions: - SiO2 45-65% - Al2O3 0-20% - B2O3 0-5% - Na2O 4-12% - K2O 3.5-12% - MgO 0-8% - CaO 0-13% - ZrO2 0-20% - the sum of the oxides SiO2, Al2O3 and ZrO2 remaining equal to or below 70%, said composition optionally incorporating the oxides BaO and/or SrO in proportions 11%</=MgO+CaO+BaO+SrO</=24% and the alkaline oxides are introduced in the following weight percentages 0.22%</=Na2O/Na2O+K2O</=0.60. |
申请公布号 |
DE69502806(D1) |
申请公布日期 |
1998.07.09 |
申请号 |
DE1995602806 |
申请日期 |
1995.10.05 |
申请人 |
SAINT-GOBAIN VITRAGE "LES MIROIRS", COURBEVOIE, FR |
发明人 |
RIFQI, FRANCOISE, F-75017 PARIS, FR;KOCH, STEPHANIE, F-92600 ASNIERES, FR;JOUSSE, DIDIER, F-95320 ST-LEU-LA-FORET, FR |
分类号 |
C03C3/076;C03C3/085;C03C3/087;C03C3/091;C03C3/093;C03C15/02;C03C21/00;C03C23/00 |
主分类号 |
C03C3/076 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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