Smoking article mouthpiece with cooling agent inclusion complex

Patent metadata

Field	Value
Publication number	US-9949505-B2
Application number	US-201314398041-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Apr 30, 2012
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A smoking article includes a mouthpiece having an outer surface and a cooling agent inclusion complex disposed on the outer surface.

First claim

The invention claimed is:

1. A smoking article comprising:
a mouthpiece having an outer surface; and
a cooling agent inclusion complex disposed on the outer surface, the cooling agent inclusion complex comprising cyclodextrin and a non-volatile cooling agent.

2. A smoking article according to claim 1 wherein the cooling agent is a carboxamide containing compound.

3. A smoking article according to claim 2 wherein the carboxamide containing compound has the structure (I):

where R is a C1-C12 straight or branched chain alkyl or alkoxy, or arylene or pyridyl, or wherein the carboxamide containing compound has the structure (I-B):

4. A smoking article according to claim 2 wherein the carboxamide containing compound is N-ethyl-p-menthane-3-carboxamide; ethyl 3-(p-menthane-3-carboxamido)acetate; N-(ethoxycarbonylmethyl)-p-menthane-3-carboxamide; N-(4-cyanomethylphenyl)-p-menthane carboxamide; N-(4-aminocarbonylphenyl)-p-menthane; or N-(4-methoxyphenyl)-p-menthanecarboxamide or N-(2-(pyridine-2-yl-)ethyl)-3-p-menthanecarboxamide.

5. A smoking article according to claim 2 wherein the carboxamide containing compound is N-ethyl-p-menthane-3-carboxamide or ethyl 3-(p-menthane-3-carboxamido)acetate.

6. A smoking article according to claim 2 wherein the carboxamide containing compound has the structure (II):

where R1 is a C1-C6 straight or branched chain alkyl or alkoxy, and each R2 is independently selected from the group consisting of C1-C3 straight or branched chain alkyl, or wherein the carboxamide containing compound has the structure (II-C):

7. A smoking article according to claim 2 wherein the carboxamide containing compound is 2-isopropyl-N,2,3-trimethylbutanamide; N-(2-ethoxyethyl)-2,3-dimethyl-2-isopropylbutanamide; or N-(1-isopropyl-1-methylisobutyl)anisamide; or N-ethyl-2,2-diisopropylbutanamide; or N-(2-hydroxyethyl)-2-isopropyl-2,3-dimethylbutanamide.

8. A smoking article according to claim 2 wherein the carboxamide containing compound is 2-isopropyl-N,2,3-trimethylbutanamide.

9. A smoking article according to claim 1 wherein the cooling agent is a menthoxy containing compound.

10. A smoking article according to claim 9 wherein the menthoxy containing compound has the structure (III):

where R3 is a C1-C6 straight or branched chain alkyl or alkoxy, or wherein the menthoxy containing compound has the structure (III-A):

or wherein the menthoxy containing compound has the structure (III-C):

11. A smoking article according to claim 9 wherein the menthoxy containing compound is menthyl lactate; monomenthyl succinate; monomenthyl glutarate; menthyl pyrrolidin-2-one-5-carboxylate; menthyl ester of 4-(N,N-dimethylamino)-4-oxobutanoic acid; menthyl 3-hydroxybutyrate; 3-1-menthoxypropane-1,2-diol; 2-1-menthoxyethanol; menthone glycerol ketal; p-menthane-3,8-diol; or menthyl methyl ether.

12. Method of providing a stable cooling sensation on the mouthpiece of a smoking article, the method comprising including a cyclodextrin inclusion complex on the outer surface of the mouthpiece, the cyclodextrin inclusion complex comprising cyclodextrin and a non-volatile cooling agent.

13. A method according to claim 12 wherein the cyclodextrin inclusion complex comprises cyclodextrin and a carboxamide containing compound.

14. A method according to claim 12 wherein the cyclodextrin inclusion complex comprises cyclodextrin and a menthoxy containing compound.

Assignees

• Philip Morris Products Sa

Inventors

• Kadiric Alen

Classifications

• A24D3/063

  of the fibers · CPC title

• A24D3/10

  of cellulose or cellulose derivatives · CPC title

• A24B15/403

  having only oxygen as hetero atoms · CPC title

• A24D3/061

  containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking · CPC title

• A24D3/18

  Mouthpieces of cigars or cigarettes; Manufacture thereof (manufacture of tobacco smoke filters A24D3/02) · CPC title