Smoking article comprising a flavour delivery material

Patent metadata

Field	Value
Publication number	US-10470488-B2
Application number	US-201214240068-A
Country	US
Kind code	B2
Filing date	Aug 30, 2012
Priority date	Sep 9, 2011
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A smoking article includes an aerosol-generating substrate comprising a flavor delivery material for thermally releasing a flavorant. The flavor delivery material comprises a polymer matrix and a plurality of domains of a flavor composition dispersed within the polymer matrix. The flavor composition comprises a flavorant mixed with one or more triglycerides including at least 30% by weight of triglyceride having at least one carboxylic acid having a chain length of greater than 12. The flavorant is releasable from the polymer matrix upon heating the flavor delivery material to elevated temperatures.

First claim

The invention claimed is:

1. A smoking article comprising an aerosol-generating substrate, wherein the aerosol-generating substrate comprises a flavour delivery material for thermally releasing a flavourant, the flavour delivery material comprising:
a polymer matrix; and
a plurality of domains including a flavour composition within the polymer matrix, the flavour composition comprising a flavourant mixed with a triglyceride excipient comprising at least one fat including at least 30% by weight of triglycerides having at least one carboxylic acid having a chain length of greater than 12, wherein the flavourant has a melting point that is within 15° C. of the melting point of the at least one fat;
wherein the domains within the polymer matrix have an average domain size of 20 microns or less;
wherein the polymer matrix comprises at least about 20% by weight pectin and at least about 60% by weight alginate; and
wherein the flavourant is releasable from the flavour delivery material upon heating of the smoking article.

2. A smoking article according to claim 1 wherein the flavourant has a melting point that is within 10° C. of the melting point of the at least one fat.

3. A smoking article according to claim 1 wherein the at least one fat has a clear point melting point of at least 27° C.

4. A smoking article according to claim 1 wherein the flavour composition comprises between 50% and 75% by weight of the flavourant and between 25% and 50% by weight of the triglyceride.

5. A smoking article according to claim 1 wherein the viscosity profile of the triglyceride excipient is such that solidification of the triglyceride excipient begins at 35° C. or lower upon cooling of the triglyceride excipient from 70° C.

6. A smoking article according to claim 5 wherein the triglyceride excipient is completely solid at 25° C. or lower.

7. A smoking article according to claim 1 wherein the flavourant is releasable from the polymer matrix upon heating the flavour delivery material above 220° C.

8. A smoking article according to claim 1 wherein the flavour delivery material has a total loss of mass of no more than 15% upon increasing the temperature of the flavour delivery material to 220° C.

9. A smoking article according claim 1 wherein the flavourant comprises menthol.

10. A smoking article according to claim 1 wherein the triglyceride excipient comprises a polymorphic fat.

11. A smoking article according to claim 1 wherein the triglyceride excipient comprises cocoa butter.

12. A smoking article according to claim 11 wherein the flavour composition comprises 50 to 75% by weight menthol dispersed in cocoa butter.

13. A smoking article according to claim 1 wherein the flavour delivery material has total loss of mass of at least 50% when increasing the temperature of the flavour delivery material from 220° C. to 320° C.

14. A smoking article according to claim 1 , wherein 80% of the domains of the flavour composition have a diameter of 20 microns or less.

15. A method for producing a smoking article, the method comprising the steps of:
providing a flavour delivery material comprising a polymer matrix and a plurality of domains including a flavour composition within the polymer matrix, the flavour composition comprising a flavourant mixed with a triglyceride excipient comprising at least one fat including at least 30% by weight of triglyceride having at least one carboxylic acid having a chain length of greater than 12, wherein the flavourant has a melting point that is within 15° C. of the melting point of the at least one fat; wherein the domains within the polymer matrix have an average domain size of 20 microns or less;
wherein the polymer matrix comprises at least about 20% by weight pectin and at least about 60% by weight alginate; and
forming an aerosol-generating substrate including the flavour delivery material.

16. Use of a flavour delivery material in a smoking article, the flavour delivery material comprising:
a polymer matrix; and
a plurality of domains including a flavour composition within the polymer matrix, the flavour composition comprising a flavourant mixed with a triglyceride excipient comprising at least one fat including at least 30% by weight of triglyceride having at least one carboxylic acid having a chain length of greater than 12, wherein the flavourant has a melting point that is within 15° C. of the melting point of the at least one fat; wherein the domains within the polymer matrix have an average domain size of 20 microns or less;
wherein the polymer matrix comprises at least about 20% by weight pectin and at least about 60% by weight alginate; and
wherein the flavourant is releasable from the flavour delivery material upon heating of the smoking article.

17. The use according to claim 16 , wherein at least about 80% of the domains have a size smaller than 20 microns.

Assignees

• Besso Clement
• Philip Morris Products Sa

Inventors

• Besso Clement

Classifications

• A24B15/283

  by encapsulation of the chemical substances · CPC title

• A23L27/72

  Encapsulation · CPC title

• A23V2002/00

  Food compositions, function of food ingredients or processes for food or foodstuffs · CPC title

• A24B15/32 Primary

  by acyclic compounds · CPC title

• A24B15/34

  containing a carbocyclic ring other than a six-membered aromatic ring · CPC title