Aerosol Generating Material For A Smoking Article

Abstract

The invention provides an aerosol generating material ( 6 ) for a smoking article, comprising particles ( 1 ) that consist essentially of diluent ( 2 ) encapsulated by barrier material ( 3 ).

1 . An aerosol generating material for a smoking article, comprising particulate porous material impregnated with a diluent, wherein said particulate porous material has a BET specific surface area of at least 1200 m 2 /g. 
     
     
         2 . The aerosol generating material as claimed in  claim 1 , wherein said material is a particulate porous carbon material. 
     
     
         3 . The aerosol generating material as claimed in  claim 1 , wherein said particulate porous material has a BET specific surface area of at least 1300 m 2 /g. 
     
     
         4 . The aerosol generating material as claimed in  claim 1 , wherein the pore volume of said particulate porous material is at least 0.5 cc/g. 
     
     
         5 . The aerosol generating material as claimed in  claim 1 , wherein said particulate porous material is activated carbon, having a CTC activation level prior to impregnation with the diluent of at least 50%. 
     
     
         6 . The aerosol generating material as claimed in  claim 1 , wherein the diluent is impregnated into said particulate porous material in an amount of 150-200% by weight of the particulate porous material. 
     
     
         7 . An aerosol generating material for a smoking article, comprising particulate calcium carbonate carrying a diluent. 
     
     
         8 . The aerosol generating material as claimed in  claim 7 , wherein the calcium carbonate is precipitated calcium carbonate. 
     
     
         9 . The aerosol generating material as claimed in  claim 1 , wherein the diluent is a liquid at room temperature. 
     
     
         10 . The aerosol generating material as claimed in  claim 1 , wherein the diluent is at least one of triacetin, triethyl citrate, and/or isopropyl myristate. 
     
     
         11 . The aerosol generating material as claimed in  claim 1 , wherein the impregnated particulate porous material is encapsulated in a barrier material. 
     
     
         12 . The aerosol generating material as claimed in  claim 1 , which is a cut or shredded sheet material. 
     
     
         13 . (canceled) 
     
     
         14 . A smokable filler material, comprising smoking material and an aerosol generating material comprising particulate porous material impregnated with a diluent, wherein said particulate porous material has a BET specific surface area of at least 1200 m 2 /g and wherein the pore volume of said particulate porous material is at least 0.5 cc/g. 
     
     
         15 . A smoking article, said smoking article comprising a filter and smokable filler material, and further comprising an aerosol generating material, said aerosol generating material comprising particulate porous material impregnated with a diluent, wherein said particulate porous material has a BET specific surface area of at least 1200 m 2 /g.