发明名称 |
Process for manufacturing high purity silica |
摘要 |
This invention deals with a process for manufacturing high purity silica which comprises making an aqueous alkali silicate solution into fine fibrous gel in a coagulant, treating the fibrous gel obtained with an acid-containing solution, and then with water to extract and remove impurities; and optionallly heating a resulting silica at a temperature of 1,000 DEG C. or higher. Thus obtained silica is preferably used as a filler, especially, the one for resin compositions for encapsulating electronic parts; etc.
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申请公布号 |
US4683128(A) |
申请公布日期 |
1987.07.28 |
申请号 |
US19860878773 |
申请日期 |
1986.06.25 |
申请人 |
NITTO CHEMICAL INDUSTRY CO., LTD.;MITSUBISHI RAYON CO., LTD. |
发明人 |
ORII, KOICHI;NISHIDA, MASASHI;YAGI, JUNSUKE;OHSHIMA, IWAO |
分类号 |
C01B33/152;C01B33/18;C03B37/01;C03B37/095;C03C13/00;(IPC1-7):C01B33/12 |
主分类号 |
C01B33/152 |
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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