发明授权
- 专利标题： Amorphous precipitated silica
- 专利标题（中）： 无定形沉淀二氧化硅
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申请号： US909041申请日： 1997-08-08
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公开(公告)号： US5935543A公开(公告)日： 1999-08-10
- 发明人: James L. Boyer , Thomas G. Krivak , Robert C. Wang , Laurence E. Jones
- 申请人： James L. Boyer , Thomas G. Krivak , Robert C. Wang , Laurence E. Jones
- 申请人地址： OH Cleveland
- 专利权人： PPG Industries Ohio, Inc.
- 当前专利权人： PPG Industries Ohio, Inc.
- 当前专利权人地址： OH Cleveland
- 主分类号： C01B33/12
- IPC分类号： C01B33/12 ; C01B33/193 ; H01M2/16 ; C04B14/04
摘要：
Amorphous precipitated silica which may be used to form battery separators of very low specific resistance is characterized by (a) a CTAB surface area in the range of from 140 to 185 m.sup.2 /g; (b) a DBP oil absorption in the range of from 210 to 310 cm.sup.3 /100 g; (c) a mean ultimate particle size in the range of from 10 to 18 nm; (d) a total intruded volume in the range of from 2.6 to 4 cm.sup.3 /g; and (e) an intruded volume in the range of from 0.9 to 2 cm.sup.3 /g for pores having diameters in the range of from 20 to 100 nm.