Additive carrying composition

Patent metadata

Field	Value
Publication number	US-10368576-B2
Application number	US-201515129913-A
Country	US
Kind code	B2
Filing date	Mar 27, 2015
Priority date	Mar 28, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

There is provided a composition for inclusion in a smoking article comprising an ion exchange resin and additive particles comprising an additive on the surface of the ion exchange resin. There is also provided a smoking article filter element comprising this composition, a smoking article comprising this smoking article filter element or this composition. A method of preparing a composition comprising an ion exchange resin and additive particles comprising an additive is also provided, the method comprising the deposition of additive particles onto the ion exchange resin from the solid and/or liquid phase of an aerosol.

First claim

The invention claimed is:

1. A composition for inclusion in a smoking article comprising an ion exchange resin and additive particles comprising an additive on the surface of the ion exchange resin, wherein the ion exchange resin has functional groups for ion exchange and the additive particles are not bonded to the functional groups, and wherein the additive is released from the composition by volatilization.

2. A composition according to claim 1 , wherein the additive is released from the additive particles and at least some additive becomes entrained in the smoke being drawn through the smoking article upon use.

3. A composition according to claim 1 , wherein the additive is a volatile or semi-volatile material.

4. A composition according to claim 1 , wherein the additive is a flavour and/or aroma.

5. A composition according to claim 4 , wherein the flavour and/or aroma is a plant compound or derivative thereof.

6. A composition according to claim 1 , wherein the ion exchange resin comprises ion exchange resin beads.

7. A composition according to claim 1 , wherein the ion exchange resin has one or more of the following properties: a mean bead diameter of from about 20 to about 1200 μm; a BET surface area of from about 10 to about 300 m 2 /g; a mass density of from about 0.1 to about 1 g/cm 3 ; and a total exchange capacity of from about 0.5 to about 2 meq/cm 3 .

8. A composition according to claim 1 , comprising at least one of sandalwood, eucalyptus, anise, and cedar.

9. A smoking article filter element, wherein the smoking article filter element comprises a composition according to claim 1 .

10. A smoking article comprising a composition according to claim 1 .

11. A smoking article comprising a smoking article filter element according to claim 9 .

12. A method of preparing a composition comprising an ion exchange resin and additive particles comprising an additive, the method comprising the deposition of additive particles onto the ion exchange resin from the solid and/or liquid phase of an aerosol.

13. A method according to claim 12 , wherein the additive particles are deposited onto an ion exchange resin inside a closed chamber.

Assignees

• British American Tobacco Investments Ltd

Inventors

• Branton Peter

Classifications

• A24B15/30

  by organic substances {(A24B15/281 takes precedence)} · CPC title

• A24D3/12 Primary

  of ion exchange materials · CPC title

• A24D3/14

  of organic materials as additive (of ion exchange materials A24D3/12) · CPC title

• A24D3/048

  containing additives · CPC title

• A24D3/061

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