Adsorbent materials
AssigneeBritish American Tobacco (Investments) Limited
InventorPeter Branton
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Abstract
There is provided an adsorbent material comprising a porous carrier material having pores with a diameter greater than 20 nm and carrying additive particles on its external surface, wherein the additive particles comprise an additive and have a diameter of greater than 20 nm. There is also provided a smoking article filter element comprising such an adsorbent material, a smoking article comprising such an adsorbent material, and a method of preparing such an adsorbent material.
Claims14
An adsorbent material comprising a porous carrier material having pores with a diameter less than 20 nm and carrying additive particles on its external surface, wherein the additive particles comprise an additive and have a diameter of greater than 20 nm, and wherein the additive particles do not occupy the pores of the porous carrier material.
Dependencies are inferred from the claim text.