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    • 8. 发明授权
    • Cigarette filter material and cigarette filter
    • 香烟过滤材料和香烟过滤嘴
    • US07942154B2
    • 2011-05-17
    • US11794224
    • 2005-12-21
    • Hiroki TaniguchiTakashi Hibi
    • Hiroki TaniguchiTakashi Hibi
    • A24B15/28
    • A24D3/022A24D3/10A24D3/14
    • The present invention provides a cigarette filter material useful for selectively and efficiently reducing formaldehyde while maintaining a palatable component such as nicotine or tar. The cigarette filter material is obtained by coating-treating a substrate (such as a cellulose acetate fiber) with a solution (particularly, an aqueous solution) containing a polysaccharide having an amino group (e.g. chitosan) and a polar solvent (e.g., water) [and optionally an acid such as a hydroxy acid (e.g., lactic acid)]. A cigarette filter of such a cigarette filter material can efficiently and selectively reduce formaldehyde. For example, the cigarette filter ensures a retention of formaldehyde of not more than 65% while maintaining retentions of nicotine and tar of not less than 80%, respectively, in main stream smoke.
    • 本发明提供一种香烟过滤嘴材料,其可用于选择性和有效地还原甲醛,同时保持可口的组分如尼古丁或焦油。 香烟过滤嘴材料通过用含有氨基的多糖(例如壳聚糖)和极性溶剂(例如水)的溶液(特别是水溶液)涂布处理基材(例如醋酸纤维素纤维)而获得, [和任选的酸如羟基酸(例如乳酸)]。 这种卷烟过滤材料的香烟过滤嘴可以有效地和选择性地减少甲醛。 例如,香烟过滤器确保甲醛的保留量不超过65%,同时在主流烟气中分别保持不少于80%的尼古丁和焦油的保留。