Filter material

Details Filter material Filter material

A - Human Necessities

24

D

131/18, 252/23

A24D 3/08 (2006.01) A24D 3/16 (2006.01)

Patent

CA 1146924

ABSTRACT OF THE DISCLOSURE A filter material for removing at least one given substance from an at least substantially gaseous medium, such as tobacco smoke, comprises a cross-linked carbo- hydrate polymer which is swellable to a given degree and which has the form of an open-pore three-dimensional micro-porous network, there being substantially uniformly distributed therein at lease one agent able to remove said substance in a substantially selective manner from the medium passing through the filter.

341021

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