发明名称 |
Cigarette filter and process for producing thereof |
摘要 |
<p>A cigarette filter having a reagent which chemically reacts with and removes a gaseous component of a smoke stream. The reagent contains functional groups covalently bonded to a non-volatile inorganic substrate which is incorporated in the filter. The filter can remove gaseous components such as aldehydes from tobacco smoke. Preferred functional groups are 3-aminopropylsilyl groups covalently bonded to silica gel (APS silica gel). The reagent can be contained in a space in the filter or incorporated in one or more filter elements such as tipping paper, shaped paper insert, mouthpiece plug, solid filter element, or free-flow filter element. The reagent can be part of or coated on paper such as tipping or filter paper or incorporated in non-paper filter elements formed from fibrous materials such as cellulose acetate or polypropylene fibers.</p> |
申请公布号 |
CZ20011496(A3) |
申请公布日期 |
2002.07.17 |
申请号 |
CZ20010001496 |
申请日期 |
1999.10.29 |
申请人 |
PHILIP MORRIS INCORPORATED |
发明人 |
KOLLER KENT B.;WRENN SUSAN E.;HOUCK WILLIE G. JR.;PAINE JOHN B. III |
分类号 |
A24D3/12;A24B15/00;A24B15/28;A24D1/02;A24D1/04;A24D3/04;A24D3/14;A24D3/16;B01D39/16;B01D46/00;B01D53/34;B01D53/72;B01J20/22;(IPC1-7):A24D1/04;B01D47/00;B01J8/00;A24B15/18 |
主分类号 |
A24D3/12 |
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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