Aerosol-generating material

Abstract

Aerosol-generating materials including a plant based component, an aerosol-former material, and an acid. Also provided are methods for manufacturing the aerosol-generating materials and articles for use in an aerosol generation system, the articles including the aerosol-generating materials of the invention.

1 . An aerosol-generating material comprising a plant based component, an aerosol-former material, and an acid, wherein:
 the plant based component comprises a plant based material in an amount equal to or greater than about 20% by dry weight of the plant based component and the plant based material has a nicotine content of equal to or greater than 1.5% by dry weight of the plant based material;   the total amount of the aerosol-former material is from about 10% to about 30% by weight of the aerosol-generating material; and   the total amount the acid is from about 0.1% to about 5% by weight of the aerosol-generating material.   
     
     
         2 . An aerosol-generating material according to  claim 1 , wherein the acid is selected from the group consisting of lactic acid, levulinic acid, benzoic acid, citric acid, 2-methylbutyric acid, and 2-methylvaleric acid; optionally the acid is lactic acid or levulinic acid. 
     
     
         3 . An aerosol-generating material according to  claim 1 , wherein the plant based material is a botanical material or a tobacco material. 
     
     
         4 . An aerosol-generating material according to  claim 3 , wherein the tobacco material is a lamina tobacco material. 
     
     
         5 . An aerosol-generating material according to  claim 1 , wherein the plant based component comprises the plant based material in amount from about 20% to about 99% by weight of the plant based component. 
     
     
         6 . An aerosol-generating material according to  claim 1 , wherein the plant based material has a nicotine content of from about 1.5% to about 5% by dry weight of the plant based material. 
     
     
         7 . An aerosol-generating material according to  claim 1 , wherein the plant based component has a nicotine content of from about 0.5% to about 3% by dry weight of the plant based component. 
     
     
         8 . An aerosol-generating material according to  claim 1 , wherein the plant based component comprises the acid in an amount from about 50% to about 99% of the total acid in the aerosol-generating material. 
     
     
         9 . An aerosol-generating material according to  claim 1 , wherein the total amount of the aerosol-former material is from about 10% to about 20% by weight of the aerosol-generating material. 
     
     
         10 . An aerosol-generating material according to  claim 1 , wherein the aerosol-former material is selected from the group consisting 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, propylene carbonate, and mixtures thereof. 
     
     
         11 . An aerosol-generating material according to  claim 1 , wherein the aerosol-former material comprises glycerol in amount from about 10% to about 90% by weight of the aerosol-former material. 
     
     
         12 . An aerosol-generating material according to  claim 1 , wherein the plant based component comprises paper reconstituted tobacco material in an amount of from about 50% to about 80% by weight of the plant based component. 
     
     
         13 . An aerosol-generating material according to  claim 1 , wherein the plant based component comprises a plant based material selected from the group consisting of: extruded tobacco, bandcast tobacco, and mixtures thereof. 
     
     
         14 . An aerosol-generating material comprising a plant based component which comprises nicotine, an aerosol-former material, and an acid, wherein:
 the aerosol-generating material comprises the acid in an amount from about 50% to about 200% relative to the moles of nicotine in the plant based component.   
     
     
         15 . An aerosol-generating material according to  claim 14 , wherein the acid is selected from the group consisting of lactic acid, levulinic acid, benzoic acid, citric acid, 2-methylbutyric acid, and 2-methylvaleric acid; optionally the acid is lactic acid or levulinic acid. 
     
     
         16 . An aerosol-generating material according to  claim 13 , wherein the total amount of the aerosol-former material is from about 10% to about 30% by weight of the aerosol-generating material. 
     
     
         17 . An aerosol-generating material according to  claim 14 , wherein the plant based component comprises a plant based material selected from the group consisting of a botanical material or a tobacco material. 
     
     
         18 . An aerosol-generating material according to  claim 14 , wherein the plant based component comprises a plant based material having a nicotine content of from about 1.5% to about 5% by dry weight of the plant based material. 
     
     
         19 . An aerosol-generating material according to  claim 14 , wherein the plant based component comprises a lamina tobacco material. 
     
     
         20 . An aerosol-generating material according to  claim 14 , wherein the plant based component has a nicotine content of from about 0.5% to about 2% by dry weight of the plant based component. 
     
     
         21 . An aerosol-generating material according to  claim 14 , wherein the aerosol former material comprises glycerol in amount from about 10% to about 90% by weight of the aerosol-former material. 
     
     
         22 . A method of manufacturing an aerosol-generating material as claimed in  claim 1 , the method comprising applying said aerosol-former material and said acid to said plant based component. 
     
     
         23 . An aerosol-generating material manufactured by the method as claimed in  claim 22 . 
     
     
         24 . Use of an aerosol-generating material as claimed in claim  claim 1  in an article for use in an aerosol provision system. 
     
     
         25 . An article for use in an aerosol provision system comprising aerosol-generating material as claimed in  claim 1 . 
     
     
         26 . A system comprising an aerosol-generating material as claimed in  claim 1  and a device arranged to heat the aerosol-generating material and generate an aerosol from the aerosol-generating material.