发明名称 |
Process to prepare moulded shaped translucent lithium-di-silicate glass ceramic products |
摘要 |
Molded translucent lithium disilicate glass ceramic products of high chemical stability and high strength are produced from a melt of specified starting glass composition. Production of molded translucent lithium disilicate glass ceramic products of high chemical stability and high strength comprises: (a) forming a melt of a starting glass composition containing (in wt.%): 57.0-80.0 SiO2, 0-5.0 Al2O3, 0.1-6.0 La2O3, 0-5.0 MgO, 0-8.0 ZnO, 11.0-19.0 Li2O, 0.1-7.0 Al2O3 + La2O3, 0.1-9.0 MgO + ZnO; (b) molding the melt and cooling; and (c) heat treating the molded glass product at 400-1100o C to form the glass ceramic product. |
申请公布号 |
EP0916625(B1) |
申请公布日期 |
2002.09.18 |
申请号 |
EP19980250392 |
申请日期 |
1998.11.09 |
申请人 |
IVOCLAR VIVADENT AG |
发明人 |
SCHWEIGER, MARCEL, DIPL.-ING.;CRAMER VON CLAUSBRUCH, SASCHA;HOELAND, WOLFRAM, PROF. DR.;RHEINBERGER, VOLKER, DR. |
分类号 |
A61K6/027;A61K6/06;C03C3/095;C03C3/097;C03C10/00;C03C10/04;C03C17/02;(IPC1-7):C03C10/00 |
主分类号 |
A61K6/027 |
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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