发明名称 |
SILICA POWDER AND METHOD OF USING THE SAME |
摘要 |
<p>The present invention provides ceramic powder capable of being incorporated into rubber or a resin for the preparation of a composition, which shows excellent heat resistance and flame retardancy and which is used, for instance, as a semiconductor-sealing material. The ceramic powder has a multi-peak frequency distribution pattern having at least two peaks as a particle size distribution as determined using a laser diffraction-scattering type particle size-analyzer, wherein the maximum particle size for the first peak ranges from 40 to 80 µ m and that for the second peak ranges from 3 to 8 µ m and wherein the rate of the particles having a particle size of not less than 20 µ m and less than 40 µ m is not more than 20% by mass (inclusive of 0% by mass).</p> |
申请公布号 |
EP2022758(A1) |
申请公布日期 |
2009.02.11 |
申请号 |
EP20070743181 |
申请日期 |
2007.05.11 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
NISHI, YASUHISA;IWASA, MITSUYOSHI |
分类号 |
C01B33/18;C08K3/36;H01L23/29;H01L23/31 |
主分类号 |
C01B33/18 |
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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