CIGARETTE FILTER Russian patent published in 2007 - IPC A24D3/16 

FIELD: cigarette industry, in particular, cigarette filter.

SUBSTANCE: cigarette filter comprises filtering medium containing inorganic basic material selected from the group comprising sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, sodium phosphate, potassium phosphate, disodium hydrophosphate, dipotassium hydrophosphate, sodium dihydrophosphate, potassium dihydrophosphate, and ammonium dihydrophosphate, and wetting agent selected from the group comprising glycerin, sodium propionate and sodium lactate. Inorganic basic substance is contained in an amount of from about 3.5 mg to about 10.5 mg. Inorganic basic substance to wetting agent ratio is within the range of from 1:1 to 1:2.

EFFECT: increased efficiency in reducing content of aldehydes in cigarette smoke stream.

2 cl, 7 dwg, 5 ex