发明名称 |
Menetelmä piihappohydraatin valmistamiseksi |
摘要 |
The present invention provides silicic acid hydrate having a large pore volume and tiny particle diameters, and a process for preparing it. There is disclosed silicic acid hydrate obtained by neutralizing an aqueous solution of sodium silicate with a mineral acid, which has particle properties represented by an oil absorption of 250 to 350 ml/100 g, a total pore volume of 4.0 to 6.0 cc/g, an average pore radius of 200 to 400 ANGSTROM , and an average pore diameter of 3.0 to 15 mu m by the laser method, or 2.0 to 4.0 mu m by the coulter method, or 0.5 to 3.5 mu m by the centrifugal precipitation method.
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申请公布号 |
FI115212(B) |
申请公布日期 |
2005.03.31 |
申请号 |
FI19950004557 |
申请日期 |
1995.09.26 |
申请人 |
NIPPON PAPER INDUSTRIES CO.,,LTD. |
发明人 |
MAEJIMA,KUNIAKI;YAMAGATA,SHIGEKI;BANDA,TOMOHIRO;KISHIDA,MASARU;MONBETSU,KEIJI;NAITO,TSUTOMU |
分类号 |
C01B33/143;C01B33/193;D21H17/67;(IPC1-7):C01B33/12;D21H17/68 |
主分类号 |
C01B33/143 |
代理机构 |
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主权项 |
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地址 |
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