Selective delivery and retention of aldehyde and nicotine by-pro

Details Selective delivery and retention of aldehyde and nicotine by-pro Selective delivery and retention of aldehyde and nicotine by-pro

1988-12-20

1991-04-23

Millin, V.

Tobacco

Smoke separator or treater

Plural diverse elements

131332, 131341, 131345, 493 47, 493 49, A24D 306, A24D 308, A24D 314

Patent

active

050092391

ABSTRACT:
A process for improving selective filter retention and pass through properties of cigarette filter elements by treating with polyethyleneimine modified to a predetermined pH range with one or more indicated water soluble organic acids, as a filter modifier composition, and the corresponding filter element and cigarette.

REFERENCES:
patent: Re28858 (1976-06-01), Litzinger
patent: 3340879 (1967-09-01), Horsewell et al.
patent: 3393685 (1968-07-01), Mumpower et al.
patent: 3403690 (1968-10-01), Horsewell
patent: 3428056 (1969-02-01), Sublett et al.
patent: 3434479 (1969-03-01), Till et al.
patent: 3605759 (1971-09-01), Owens
patent: 3716063 (1973-02-01), Litzinger
patent: 4246910 (1981-01-01), Rainer et al.
patent: 4266561 (1981-05-01), Litzinger

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