Article for the selective removal of hydrogen cyanide from tobac

Details Article for the selective removal of hydrogen cyanide from tobac Article for the selective removal of hydrogen cyanide from tobac

1975-04-25

1978-05-30

Michell, Robert W.

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

55 68, 131 109, 131264, A24B 15027, B01D 3900

Patent

active

040918220

ABSTRACT:
An improved filter for tobacco products such as cigarettes is described, providing for selective HCN absorption. The selective adsorbant is a complex formed from a polydentate amine and a metal ion selected from the group consisting of zinc, iron (II), copper and nickel. The complex may be improved in its effectiveness by further combination with a polyalkylene oxide which acts synergistically therewith. Illustrative materials are the zinc complex of ethylenediamine employing polyethylene oxide as a synergist.

REFERENCES:
patent: 3347247 (1967-10-01), Lloyd
patent: 3550600 (1972-03-01), Horsewell et al.
patent: 3716063 (1973-02-01), Litzinger
patent: 3724469 (1973-04-01), Reynolds et al.
patent: 4022223 (1977-05-01), Rainer et al.
"Chelating Agents and Metal Chelates" by Dwyer & Mellor; Academic Press New York & London 1964.

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