Aerosol-generating material comprising chitosan and an additional binder

Abstract

The invention provides an aerosol-generating material comprising: (a) aerosol-former material, (b) chitosan, (c) additional binder, and (d) filler. The invention also provides: methods for forming the aerosol-generating material; an aerosol-generating composition comprising the aerosol-generating material; a consumable for use in a non-combustible aerosol provision device, the consumable comprising the aerosol-generating composition; a non-combustible aerosol provision system comprising the consumable and the device; a method of generating an aerosol using the non-combustible aerosol provision system; and a use of the aerosol-generating composition in a consumable.

1 . An aerosol-generating material comprising:
 (a) aerosol-former material;   (b) chitosan;   (c) additional binder; and   (d) filler.   
     
     
         2 . The aerosol-generating material of  claim 1 , wherein the aerosol-generating material comprises chitosan in an amount of about 0.01-10 wt % of the aerosol-generating material on a dry weight basis. 
     
     
         3 . The aerosol-generating material of  claim 1 , wherein the aerosol-former material comprises (or is) one or more of: glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate. 
     
     
         4 . The aerosol-generating material of  claim 1 , wherein the aerosol-generating material comprises aerosol-former material in a total amount of about 35-65 wt % on a dry weight basis. 
     
     
         5 . The aerosol-generating material of  claim 1 , wherein the aerosol-generating material comprises aerosol-former material in a total amount of about 40-60 wt % on a dry weight basis. 
     
     
         6 . The aerosol-generating material of  claim 1 , wherein the additional binder comprises (or is) one or more compounds selected from: polysaccharide binders, such as alginate, pectin, starch or a derivative thereof such as hydroxypropyl starch or carboxymethyl starch sodium, cellulose or a derivative thereof, pullulan, carrageenan, agar and agarose; gelatin; gums, such as xanthan gum, guar gum and acacia gum; silica or silicone compounds, such as PDMS and sodium silicate; clays, such as kaolin; and polyvinyl alcohol. 
     
     
         7 . The aerosol-generating material of  claim 1 , wherein the additional binder comprises (or is) one or more compounds selected from guar gum, cellulose or a derivative thereof, and starch or a derivative thereof such as hydroxypropyl starch or carboxymethyl starch sodium. 
     
     
         8 . The aerosol-generating material of  claim 6 , wherein the cellulose derivative is selected from the group consisting of: hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethylcellulose (CMC), hydroxypropyl methylcellulose (HPMC), methyl cellulose, ethyl cellulose, cellulose acetate (CA), cellulose acetate butyrate (CAB), and cellulose acetate propionate (CAP). 
     
     
         9 . The aerosol-generating material of  claim 1 , wherein the additional binder comprises (or is) one or more compounds selected from guar gum, CMC, and a starch derivative such as hydroxypropyl starch or carboxymethyl starch sodium. 
     
     
         10 . The aerosol-generating material of  claim 1 , wherein the aerosol-generating material comprises the additional binder in a total amount of about 5 to 50 wt % of the aerosol-generating material on a dry weight basis. 
     
     
         11 . The aerosol-generating material of  claim 1 , wherein the filler comprises (or is) wood pulp. 
     
     
         12 . The aerosol-generating material of  claim 1 , wherein the aerosol-generating material comprises filler in a total amount of at least 15 wt % of the aerosol-generating material on a dry weight basis. 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . An aerosol-generating composition comprising the aerosol-generating material of  claim 1 . 
     
     
         16 . The aerosol-generating composition of  claim 15 , wherein the aerosol-generating composition further comprises tobacco material. 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . (canceled) 
     
     
         20 . The aerosol-generating composition of  claim 16 , wherein the aerosol-generating material is in the form of a shredded sheet and is blended with the tobacco material. 
     
     
         21 . A consumable for use in a non-combustible aerosol provision device, the consumable comprising an aerosol-generating composition, the aerosol-generating composition comprising an aerosol-generating material of  claim 15 . 
     
     
         22 . A non-combustible aerosol provision system comprising the consumable of  claim 21  and a non-combustible aerosol provision device, the non-combustible aerosol provision device comprising an aerosol-generation device arranged to generate aerosol from the consumable when the consumable is used with the non-combustible aerosol provision device. 
     
     
         23 . A method of generating an aerosol using the non-combustible aerosol provision system of  claim 22 , the method comprising heating the aerosol-generating material to a temperature of less than 350° C. 
     
     
         24 . (canceled) 
     
     
         25 . A method of forming the aerosol-generating material of  claim 1 , the method comprising:
 (i) providing a slurry comprising the aerosol-former material, chitosan, additional binder, the filler, a solvent and any optional further components of the aerosol-generating material;   (ii) forming a layer of the slurry; and   (iii) drying the slurry to form the aerosol-generating material.   
     
     
         26 . (canceled) 
     
     
         27 . A method for making the aerosol-generating material of  claim 1  using a paper-making process.