# US 10,117,814 B2 · Anhydrous antiperspirant aerosol compositions

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,117,814 B2
- Document ID: US10117814B2
- Status: Granted
- Kind: B2
- Application number: 15/520,615
- Filed: 2015-10-22
- Published: 2018-01-18
- Granted: 2018-11-06
- Earliest claimed: 2014-10-27
- Assignees: Conopco, Inc.
- Applicants: Conopco, Inc.
- Inventors: Duncan Alexander Court; Kevin Ronald Franklin; Philip Christopher Waterfield
- Web page: https://patentgrep.com/patent/US10117814B2

## CPC

- A61K 8/26: Aluminium; Compounds thereof
- A61K 8/046: {Aerosols; Foams}
- A61K 8/20: Halogens; Compounds thereof
- A61K 8/31: Hydrocarbons
- A61K 8/416: {Quaternary ammonium compounds (A61K8/35 takes precedence)}
- A61K 8/44: Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
- A61K 8/891: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
- A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00)
- A61K 2800/31: Anhydrous
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

An anhydrous antiperspirant aerosol composition comprising a particulate antiperspirant active system, suspending agent, carrier oil, and liquefied propellant gas, characterized in that the particulate antiperspirant active system comprises an aluminum sesquichlorohydrate of formula Al2(OH)4.4Cl1.6 to Al2(OH)4.9Cl1.1 activated with a water soluble calcium salt.

## Claims

### Claim 1

An anhydrous antiperspirant aerosol composition comprising a particulate antiperspirant active system, suspending agent, carrier oil, and liquefied propellant gas, wherein particulate antiperspirant active system comprises an aluminium sesquichlorohydrate of formula Al2(OH)4.4Cl1.6 to Al2(OH)4.9Cl1.1 activated with a water soluble calcium salt and an amino acid, and wherein the molar ratio of amino acid to aluminium is from 1:5 to 1:1, and the amino acid is glycine.

### Claim 2 (depends on 1)

The composition according to claim 1, wherein the aluminium sesquichlorohydrate the particulate antiperspirant active system has a Band III content of at least 40%.

### Claim 3 (depends on 2)

The composition according to claim 2, wherein the aluminium sesquichlorohydrate in the particulate antiperspirant active system has a Band III content of at least 60%.

### Claim 4 (depends on 2)

The composition according to claim 2, wherein the aluminium sesquichlorohydrate in the particulate antiperspirant active system has a Band III to Band II ratio of 2:1 or greater.

### Claim 5 (depends on 4)

The composition according to claim 4, wherein the aluminium sesquichlorohydrate in the particulate antiperspirant active system has a Band III to Band II ratio of 5:1 or greater.

### Claim 6 (depends on 1)

The composition according to claim 1, wherein the aluminium sesquichlorohydrate in the particulate antiperspirant active system has a molar ratio of calcium to aluminium of at least 1:20.

### Claim 7 (depends on 6)

The composition according to claim 6, wherein the aluminium sesquichlorohydrate in the particulate antiperspirant active system has a molar ratio of calcium to aluminium of at least 1:15 and the molar ratio of amino acid to aluminium is from 1:4 to 1:1.

### Claim 8 (depends on 1)

A method of manufacture of an antiperspirant composition according to claim 1, wherein an aqueous solution of aluminium sesquichlorohydrate of formula Al2(OH)4.4Cl1.6 to Al2(OH)4.9Cl1.1 is heated with a water soluble calcium salt and amino acid to achieve a Band III content of at least 40% before being spray dried to give a powder which is subsequently formulated with a suspending agent, carrier oil and liquefied propellant gas.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the solution of aluminium sesquichlorohydrate of formula Al2(OH)4.4Cl1.6 to Al2(OH)4.9Cl1.1 is heated with a water soluble calcium salt and an amino acid- to achieve a Band III content of at least 55% before it is spray dried.

### Claim 10 (depends on 8)

The method according to claim 8, wherein the powder is of a mean (D50) particle size that is from 20 to 30 microns before being formulated with the suspending agent, carrier oil and liquefied propellant gas.

### Claim 11 (depends on 8)

The method according to claim 8, wherein the water soluble calcium salt is calcium chloride.

### Claim 12 (depends on 8)

The method according to claim 8, wherein the aluminium sesquichlorohydrate of formula Al2(OH)4.7Cl1.3 to Al2(OH)4.9Cl1.1.