Aerosol antiperspirant product

Patent metadata

Field	Value
Publication number	US-10660830-B2
Application number	US-201615772689-A
Country	US
Kind code	B2
Filing date	Nov 1, 2016
Priority date	Nov 6, 2015
Publication date	May 26, 2020
Grant date	May 26, 2020

Abstract

An antiperspirant aerosol product having good environmental sustainability and comprising an anhydrous antiperspirant aerosol composition comprising an AP active comprising a basic aluminium chloride compound of formula Al 2 (OH) 4.4 Cl 1.6 to Al 2 (OH) 4.9 Cl 1.1 , water soluble calcium salt and amino acid, and an aerosol dispenser comprising a container body, an aerosol valve, and a valve actuator; characterised in that the product has a Combined Sustainability Index (CSI) of less than 3.0, where:

CSI=Al F +VOC F +M CB /N

Al F being the weight (in centigrams) of aluminium expelled per spray;

VOC F being the weight of VOC (in grams) expelled per spray;

M CB being the weight of metal (in grams) in the container body; and

N is the number of spray applications possible from the fully charged product, each figure being based on a spray duration of 2 seconds.

First claim

The invention claimed is:

1. An antiperspirant aerosol product comprising:
A) an anhydrous antiperspirant aerosol composition consisting of a propellant and a base composition, the base composition comprising an antiperspirant (AP) active comprising a basic aluminium chloride compound of formula Al 2 (OH) 4.4 Cl 1.6 to Al 2 (OH) 4.9 Cl 1.1 , a water soluble calcium salt and an amino acid, the ratio of propellant to AP active being from 5:1 to 10:1 by weight, and
B) an aerosol dispenser comprising: a container body, an aerosol valve, and a valve actuator;
wherein the product has a Combined Sustainability Index (CSI) of less than 3.0, where the CSI is calculated as the numeric sum of a weight (in centigrams) of aluminium expelled per spray, a weight (in grams) of VOC (volatile organic compounds) expelled per spray and a weight (in grams) of metal in the container body divided by a number of spray applications possible from a fully charged product, based on a spray duration of 2 seconds;
wherein the aerosol valve of the aerosol dispenser comprises a vapour phase tap (VPT) and a restrictive tailpiece (RTP).

2. An antiperspirant aerosol product comprising:
A) an anhydrous antiperspirant aerosol composition consisting of a propellant and a base composition, the base composition comprising an antiperspirant (AP) active comprising a basic aluminium chloride compound of formula Al 2 (OH) 4.4 Cl 1.6 to Al 2 (OH) 4.9 Cl 1.1 , a water soluble calcium salt and an amino acid, the ratio of propellant to AP active being from 5:1 to 10:1 by weight, and
B) an aerosol dispenser comprising a container body, an aerosol valve, and a valve actuator;
wherein the product has a Combined Sustainability Index (CSI) of less than 3.0, where:
CSI=Al F +VOC F +M CB /N

Al F being the weight (in centigrams) of aluminium expelled per spray;
VOC F being the weight of volatile organic compounds (VOC) (in grams) expelled per spray;
M CB being the weight of metal (in grams) in the container body; and
N is the number of spray applications possible from the fully charged product,
each figure being based on a spray duration of 2 seconds;
wherein the aerosol valve of the aerosol dispenser comprises a vapour phase tap (VPT) and a restrictive tailpiece (RTP).

3. An antiperspirant aerosol product comprising:
A) an anhydrous antiperspirant aerosol composition consisting of a propellant and a base composition, the base composition comprising an antiperspirant (AP) active comprising a basic aluminium chloride compound of formula Al 2 (OH) 4.4 Cl 1.6 to Al 2 (OH) 4.9 Cl 1.1 , a water soluble calcium salt and an amino acid, the ratio of propellant to AP active being from 5:1 to 10:1 by weight, and
B) an aerosol dispenser comprising: a container body, an aerosol valve, and a valve actuator;
wherein a weight (in centigrams) of aluminium expelled per spray is less than 2.20; a weight of volatile organic compounds (VOC) (in grams) expelled per spray is less than 0.80 and a weight of metal (in grams) in the container body divided by a number of spray applications possible from a fully charged product is less than 0.40;
wherein the aerosol valve of the aerosol dispenser comprises a vapour phase tap (VPT) and a restrictive tailpiece (RTP).

4. The product according to claim 1 , wherein the metal in the container body is predominately aluminium.

5. The product according to claim 1 , wherein the AP active in the base composition is a particulate AP active suspended in a carrier oil.

6. The product according to claim 1 , wherein the ratio of propellant to base composition in the antiperspirant composition is from 2:1 to 4:1 by weight.

7. The product according to claim 1 , wherein the VPT to RTP ratio is from 0.6:1 to 1.2:1.

8. The product according to claim 1 , wherein the VPT to RTP ratio is from 0.7:1 to 1.1:1.

9. The product according to claim 1 , wherein the AP active is activated aluminium sesquichlorohydrate (AASCH) prepared by heat activation of aluminium sesquichlorohydrate (ASCH) with calcium chloride and glycine.

10. The aerosol antiperspirant product according to claim 1 , wherein the diameter of a restrictive tailpiece (RTP) is less than 0.8 mm.

11. The aerosol antiperspirant product according to claim 1 , having a mean spray rate of from 0.35 g/s to 0.55 g/s.

12. The aerosol antiperspirant product according claim 1 , wherein the ratio of propellant to AP active is from 6:1 to 9:1.

13. The aerosol antiperspirant product according to claim 1 , wherein the ratio of propellant to base composition is 2:1 to 3.5:1.

14. The aerosol antiperspirant product according to claim 1 , wherein the CSI is less than 2.85.

Assignees

• Conopco Inc

Inventors

• Alvarez Sebastian
• Franklin Kevin Ronald
• King John Matthew Henry
• Waterfield Philip Christopher

Classifications

• A61K8/26

  Aluminium; Compounds thereof · CPC title

• A61K8/44

  Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof · CPC title

• A61K8/86

  Polyethers · CPC title

• A61K2800/22

  Gas releasing · CPC title

• A61K8/89

  Polysiloxanes · CPC title