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    • 3. 发明授权
    • Smoking article including a filter for selectively removing carbonyls
    • 吸烟制品包括用于选择性除去羰基的过滤器
    • US06481442B1
    • 2002-11-19
    • US09723842
    • 2000-11-28
    • Alexander J. DyakonovDavid A. GriderTatyana A. Dyakonov
    • Alexander J. DyakonovDavid A. GriderTatyana A. Dyakonov
    • A24D104
    • A24D3/166A24D3/08A24D3/14A24D3/163
    • A smoking article including a wrapper surrounding a tobacco column and a selective filter element is disclosed. The selective filter element includes at least one carrier having a developed structure and a plurality of moieties capable of the nucleophilic attack of carbonyl-containing combustion products of the smoking article supported by the at least one carrier. The selective filter element may include at least one additional filter element such as cellulose acetate. The developed structure of the at least one carrier encourages the interaction of the carbonyl-containing combustion products and the plurality of moieties capable of the nucleophilic attack. Carries include polymers, which may have branch, such as partially oxidized cellulose and polyaniline. Carries may also be a zeolite or an inorganic oxide such as aluminum, of silicon, of aluminum and silicon, and combinations thereof. In yet another carrier is an activated carbon. A moiety capable of the nucleophillic attack includes a nitrogen and hydrogen containing group such as a hydrazide—(e.g., —NH—NH2), a hydrazone—(e.g., —HC═N—NH2), a semicarbazide—(e.g., —C(═O)—NH2), an imino—(e.g., —HC═NH), and an amino—(—NH2). Preferably, the nitrogen is a primary nitrogen such as a primary amino. A spacer may be used to attach the moiety to a carrier. Examples of spacers include at least one of a —CO— group, —CO—[CH2]n—CO— group with n=1 through 4 and more.
    • 公开了一种包括围绕烟草柱和选择性过滤元件的包装物的吸烟制品。 选择性过滤元件包括具有显影结构的至少一个载体和能够由至少一个载体支撑的吸烟制品的含羰基燃烧产物的亲核攻击的多个部分。 选择性过滤元件可以包括至少一种额外的过滤元件,例如醋酸纤维素。 所述至少一种载体的显影结构促进了含羰基燃烧产物和能够进行亲核攻击的多个部分的相互作用。 载体包括可以具有分支的聚合物,例如部分氧化的纤维素和聚苯胺。 携带物也可以是沸石或无机氧化物如铝,硅,铝和硅及其组合。 在另一载体中是活性炭。 能够进行嗜盐性攻击的部分包括含氮和氢的基团,例如酰肼 - (例如-NH-NH 2),腙 - (例如-HC = N-NH 2),氨基脲 - (例如-C (= O)-NH 2),亚氨基 - (例如-HC = NH)和氨基 - ( - NH 2)。 优选地,氮是初级氮,例如伯氨基。 可以使用间隔物将部分连接到载体上。 间隔基的实例包括具有n = 1至4以上的-CO-基团,-CO- [CH 2] n -CO-基团中的至少一个。