Aerosol antiperspirant product

Patent metadata

Field	Value
Publication number	US-10682293-B2
Application number	US-201615772675-A
Country	US
Kind code	B2
Filing date	Nov 1, 2016
Priority date	Nov 6, 2015
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

An antiperspirant aerosol product having good sustainability characteristics and comprising an anhydrous antiperspirant aerosol composition comprising particulate antiperspirant active suspended in a carrier oil, the ratio of propellant to base composition being from 2:1 to 4:1 by weight and an aerosol dispenser comprising a container body, an aerosol valve, and a valve actuator; characterised in that the particulate antiperspirant active comprises a basic aluminium chloride compound of formula Al2(OH)4.4Cl1.6 to Al2(OH)4.9Cl1.1, water soluble calcium salt and an amino acid and the aerosol valve of the aerosol dispenser has a vapor phase tap (VTP) to restrictive tailpiece (RTP) ratio of from 0.6:1 to 1.2:1.

First claim

The invention claimed is:

1. An antiperspirant aerosol product having a mean spray rate of from 0.35 g/s to 0.55 g/s and comprising:
A) an anhydrous antiperspirant aerosol composition containing less than 0.5% by weight water and comprising a propellant and a base composition comprising particulate antiperspirant active suspended in a carrier oil, the ratio of propellant to base composition being from 2:1 to 4:1 by weight, the ratio of propellant to particulate antiperspirant 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 particulate antiperspirant active comprises 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; and the aerosol valve of the aerosol dispenser has a vapor phase tap (VPT) to restrictive tailpiece (RTP) ratio of from 0.6:1 to 1.2:1, this ratio relating to the minimum cross-sectional area of each, and wherein the diameter of the RTP is less than 0.8 mm.

2. The antiperspirant aerosol product according to claim 1 , wherein the antiperspirant active is activated aluminium sesquichlorohydrate (AASCH) prepared by heat activation of aluminium sesquichlorohydrate (ASCH) with a water soluble calcium salt and an amino acid.

3. The aerosol antiperspirant product according claim 1 , wherein the ratio of carrier oil to antiperspirant active is from 1.2:1 to 2:1 by weight.

4. The aerosol antiperspirant product according to claim 1 , having a VPT to RTP ratio of 0.7:1 to 1.1:1.

5. The aerosol antiperspirant product according to claim 1 , wherein the carrier oil comprises volatile silicone oil.

6. The aerosol antiperspirant product according to claim 1 , wherein the carrier oil comprises non-volatile oil.

7. The aerosol antiperspirant product according to claim 1 , wherein the diameter of the RTP is less than 0.7 mm.

8. The aerosol antiperspirant product according to claim 1 , having a mean spray rate of from 0.35 g/s to 0.45 g/s.

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

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

11. The aerosol antiperspirant product according to claim 1 , wherein the anhydrous antiperspirant aerosol composition is free of ethanol.

Assignees

• Conopco Inc

Inventors

• Alvarez Sebastian
• Franklin Kevin Ronald
• Waterfield Philip Christopher

Classifications

• B65D83/58

  with separate inlets for contents and propellant feeding into a duct upstream of the dispensing valve (with contents and propellant separated B65D83/60) · CPC title

• B65D83/141

  specially adapted for specific contents or propellants · CPC title

• B05B7/0483

  with gas and liquid jets intersecting in the mixing chamber · CPC title

• A61K8/19

  containing inorganic ingredients · CPC title

• A61K8/44

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