# US 10,368,576 B2 · Additive carrying composition

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- Number: US 10,368,576 B2
- Document ID: US10368576B2
- Status: Granted
- Kind: B2
- Application number: 15/129,913
- Filed: 2015-03-27
- Published: 2017-06-08
- Granted: 2019-08-06
- Earliest claimed: 2014-03-28
- Assignees: British American Tobacco (Investments) Limited
- Applicants: British American Tobacco (Investments) Limited
- Inventors: Peter Branton
- Web page: https://patentgrep.com/patent/US10368576B2

## CPC

- A24D 3/12: of ion exchange materials
- A24B 15/30: by organic substances {(A24B15/281 takes precedence)}
- A24D 3/048: {containing additives}
- A24D 3/061: {containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking}
- A24D 3/14: of organic materials as additive (of ion exchange materials A24D3/12)
- A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24B: MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 4)

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

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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 m2/g; a mass density of from about 0.1 to about 1 g/cm3; and a total exchange capacity of from about 0.5 to about 2 meq/cm3.

### Claim 8 (depends on 1)

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

### Claim 9 (depends on 1)

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

### Claim 10 (depends on 1)

A smoking article comprising a composition according to claim 1.

### Claim 11 (depends on 9)

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

### Claim 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.

### Claim 13 (depends on 12)

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