发明名称 |
Amorphous precipitated silica |
摘要 |
Amorphous precipitated silica which may be used to form battery separators of very low shrinkage is characterized by (a) a BET surface area in the range of from 60 to 200 m2/g; (b) a CTAB surface area in the range of from 40 to 150 m2/g; (c) a DBP oil absorption in the range of from 180 to 300 cm3/100 g; (d) a mean ultimate particle size in the range of from 20 to 30 nm; (e) a total intruded volume in the range of from 2.5 to 4 cm3/g; (f) an intruded volume in the range of from 0.3 to 1.2 cm3/g for pores having diameters in the range of from 20 to 100 nm; and (g) a pore diameter at the maximum of the volume pore size distribution function in the range of from 30 to 200 nm.
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申请公布号 |
US5922298(A) |
申请公布日期 |
1999.07.13 |
申请号 |
US19970909042 |
申请日期 |
1997.08.08 |
申请人 |
PPG INDUSTRIES OHIO, INC. |
发明人 |
BOYER, JAMES L.;KRIVAK, THOMAS G. |
分类号 |
C01B33/12;C01B33/193;H01M2/16;(IPC1-7):C01B33/12 |
主分类号 |
C01B33/12 |
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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