发明名称 |
Silica having a specific median particle size, a porous volume, an average pore diameter and less cohesion index lower, useful e.g. in cigarette filters |
摘要 |
<p>Silica (I) has a median particle size of >=100 mu m, preferably more than 2000 mu m, a porous volume, containing pores having a diameter of 3.6-1000 nm, of >=0.3 cm 3>/g, an average pore diameter of greater than 11 nm and a cohesion index of less than 0.25. Independent claims are included for: (1) the preparation of (I), by granulation of wet silica, particularly precipitated silica, preferably in the presence of at least one soluble inorganic binder followed by heat treatment and optional sifting; and (2) cigarette filters comprising (I).</p> |
申请公布号 |
FR2891539(A1) |
申请公布日期 |
2007.04.06 |
申请号 |
FR20050010006 |
申请日期 |
2005.09.30 |
申请人 |
RHODIA RECHERCHES ET TECHNOLOGIES SOCIETE PAR ACTIONS SIMPLIFIEE |
发明人 |
BOUCHARA ANNE;EBERHARDT ROBERT;PERIN ERIC |
分类号 |
C01B33/12;A24D3/16;B01J2/10;B01J20/10 |
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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