发明名称 |
SILICON OXIDE BASED ARTICLES |
摘要 |
<p>Particularly shaped articles constituted by silicon oxide, as such or with suitable additives, prepared by room temperature molding according to a process comprising: preparation of a sol starting from a silicon alcoxide, or from a silicon alcoxide and at least a precursor of at least one of the additional elements; hydrolysis of the sol obtained thereby; addition of colloidal silica; pouring the resulting mixture into the desired mould; sol gelling and fast removal of the solid product; gel drying; gel densification by means of a thermal treatment at temperature ranging from 900 ° C to 1500 ° C. The articles can be used as preforms for the optic fiber spinning.</p> |
申请公布号 |
EP1606222(A1) |
申请公布日期 |
2005.12.21 |
申请号 |
EP20040719966 |
申请日期 |
2004.03.12 |
申请人 |
DEGUSSA NOVARA TECHNOLOGY S.P.A. |
发明人 |
BOARA, GIULIO;PEDRETTI, SIMONE;RUECKEMANN, ANDREAS;SPARPAGLIONE, MASSIMO |
分类号 |
C03B19/12;(IPC1-7):C03B19/12 |
主分类号 |
C03B19/12 |
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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