Encapsulated volatile liquid source for an aerosol-generating system

Abstract

An aerosol-generating system is provided, including an encapsulated volatile liquid source including: a sorption element; a volatile liquid having a vapour pressure of at least about 20 Pa at 25° C. sorbed on the sorption element; and a sealant having a melting point of between about 40° C. and about 120° C. encapsulating the sorption element. The volatile liquid comprises a 2-oxo acid.

1 . An aerosol-generating system comprising an encapsulated volatile liquid source comprising:
 a sorption element;   a volatile liquid having a vapour pressure of at least about 20 Pa at 25° C. sorbed on the sorption element, wherein the volatile liquid comprises a 2-oxo acid; and   a sealant having a melting point of between about 40° C. and about 120° C. encapsulating the sorption element.   
     
     
         2 . The aerosol-generating system according to  claim 1 , wherein the volatile liquid has a vapour pressure of at least about 50 Pa at 25° C. 
     
     
         3 . The aerosol-generating system according to  claim 1 , wherein the acid is selected from the group consisting of 3-methyl-2-oxovaleric acid, pyruvic acid, 2-oxovaleric acid, 4-methyl-2-oxovaleric acid, 3-methyl-2-oxobutanoic acid, 2-oxooctanoic acid, and combinations thereof. 
     
     
         4 . The aerosol-generating system according to  claim 3 , wherein the acid is pyruvic acid. 
     
     
         5 . The aerosol-generating system according to any preceding  claim 1 , wherein the sealant has a melting point of between about 40° C. and about 70° C. 
     
     
         6 . The aerosol-generating system according to any preceding  claim 1 , wherein the sealant comprises a wax. 
     
     
         7 . The aerosol-generating system according to  claim 6 , wherein the sealant comprises one or more waxes selected from the group consisting of beeswax, carnauba wax, candelilla wax, petroleum waxes, polyolefin waxes, and derivatives thereof. 
     
     
         8 . The aerosol-generating system according to claim wherein the sealant comprises a paraffin wax. 
     
     
         9 . The aerosol-generating system according to  claim 1 , wherein the sorption element is a porous adsorption element. 
     
     
         10 . An aerosol-generating system comprising:
 an acid source; and   a nicotine source,   wherein the acid source is an encapsulated volatile liquid source comprising:
 a sorption element; 
 a volatile liquid having a vapour pressure of at least about 20 Pa at 25° C. sorbed on the sorption element, wherein the volatile liquid comprises a 2-oxo acid; and 
 a sealant having a melting point of between about 40° C. and about 120° C. encapsulating the sorption element. 
   
     
     
         11 . The aerosol-generating system according to  claim 1 , further comprising:
 heating means for heating the encapsulated volatile liquid source to a temperature above the melting point of the sealant.   
     
     
         12 . The aerosol-generating system according to  claim 1 , wherein the aerosol-generating system simulates a cigarette. 
     
     
         13 . An encapsulated volatile liquid source comprising:
 a sorption element;   a volatile liquid having a vapour pressure of at least about 20 Pa at 25° C. sorbed on the sorption element, wherein the volatile liquid comprises a 2-oxo acid; and   a sealant having a melting point of between about 40° C. and about 120° C. encapsulating the sorption element.