FILTER FOR CIGARETTES Russian patent published in 2008 - IPC A24D3/14 

FIELD: tobacco goods.

SUBSTANCE: invention may be used for production of cigarettes with combined filters, which contain interlayers with sorbents that capture part of tobacco pyrolysis toxic products. Cigarette filter consists of separate parts made of organic polymer fibers with adsorbing substance between these parts, which is dihydroquercetin in amount of 4-40 mg/cigarette. At that dihydroquercetin may be used in the form of finely ground powder with size of particles of 5-20 micrometer or granules with diameter of not more than 0.2 mm. Filter efficiently absorbs carbon oxide, nitrogen oxide, resin, nicotine, carcinogenic metals and volatile N-nitroso compounds from tobacco smoke.

EFFECT: reduction of negative effect of free radicals and risk of lungs cancer.

3 cl, 1 tbl, 2 ex