CIGARETTE FILTER MATERIAL AND CIGARETTE FILTER

摘要

It is intended to provide a cigarette filter material which is useful in selectively and efficiently removing formaldehyde while retaining cigarette taste components such as nicotine and tar. A cigarette filter material is obtained by a treatment for attaching a dispersion, which comprises an amino group-containing polysaccharide (chitosan or the like) in the form of grains and a dispersion medium, to a support made of, for example, cellulose acetate fiber. The dispersion medium may be a polar solvent (water, alcohols, etc.), a plasticizer for the support or the like. A cigarette filter made of the cigarette filter material as described above can selectively remove formaldehyde so that the retention ratio of formaldehyde can be lowered to 65% or less while sustaining the retention ratios of nicotine and tar each at 75% or more.