Aerosol hairspray product comprising a spraying device

Patent metadata

Field	Value
Publication number	US-10131488-B2
Application number	US-201615170031-A
Country	US
Kind code	B2
Filing date	Jun 1, 2016
Priority date	Jun 1, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

Described herein is an aerosol hairspray product including a container including a container wall which encloses a reservoir. The reservoir includes from about 40% to about 70% of a hairstyling formulation and from about 30% to about 60% of a dimethyl ether propellant. The hairstyling formulation includes water, one or more hairstyling polymers, and from about 0.05% to about 2% alcohol. A spraying device is attached to the container. The spraying devices includes a valve including a valve housing including a vapor tap including a vapor tap area. A dip tube is connected to the valve. The dip tube includes a dip tube orifice including a dip tube orifice area. The ratio of the vapor tap area to the dip tube orifice area is from about 0.005 to about 0.15.

First claim

What is claimed is:

1. An aerosol hairspray product comprising:
i. a container ( 100 ) comprising a container wall ( 110 ) which encloses a reservoir ( 120 ), wherein the reservoir ( 120 ) comprises from about 40% to about 70% of a hairstyling formulation and from about 30% to about 60% of a dimethyl ether propellant, by total weight of the hairstyling formulation and the dimethyl ether propellant;
ii. wherein the hairstyling formulation comprises:
(a) from about 30% to about 60% water, by total weight of the hairstyling formulation and the dimethyl ether propellant;
(b) from about 5% to about 15% of one or more hairstyling polymers by total weight of the hairstyling formulation and the dimethyl ether propellant, wherein the hairstyling polymer is water-soluble and has a molecular weight of less than 200,000 g/mol;
(c) is substantially free of ethanol;

wherein the hairstyling formulation has a viscosity of from about 2.5 cSt to about 5.5 cSt;
iii. a spraying device ( 200 ) attached to the container ( 100 ) for dispensing the hairstyling formulation ( 180 ) from the reservoir ( 120 ) of the container ( 100 );
wherein the spraying device ( 200 ) is fluidly connected to the reservoir ( 120 );
wherein the spraying device ( 200 ) comprises a spray actuator ( 150 ) and a valve ( 130 );
wherein the valve ( 130 ) comprises a valve housing ( 140 );
wherein the valve housing ( 140 ) comprises a vapor tap ( 160 );
wherein the vapor tap ( 160 ) comprises a vapor tap area;
wherein a dip tube ( 170 ) is fluidly connected to the valve ( 130 );
wherein the dip tube ( 170 ) comprises a dip tube orifice ( 175 );
wherein the dip tube orifice ( 175 ) comprises a dip tube orifice area;
wherein the ratio of the vapor tap area to the dip tube orifice area is from about 0.063 to about 0.15;
wherein the vapor tap area to dip tube orifice area ratio results in no clogs according to the Aerosol Spray Clog Measurement Method.

2. The aerosol hairspray product of claim 1 , wherein the one or more hairstyling polymers comprises an acrylate based system that contains at least one monomer of acrylic acid or methacrylic acid, at least one ester of an acrylate, and a polyurethane.

3. The aerosol hairspray product of claim 1 , wherein the ratio of the vapor tap area to the dip tube orifice area is from about 0.063 to about 0.09.

4. The aerosol hairspray product of claim 1 , wherein the ratio of the vapor tap area to the dip tube orifice area is from about 0.063 to about 0.08.

5. The aerosol hairspray product of claim 1 , wherein the ratio of the vapor tap area to the dip tube orifice area is about 0.063.

6. The aerosol hairspray product of claim 1 , wherein the hairstyling formulation comprises from about 40% to about 50% of the dimethyl ether propellant, by total weight of the hairstyling formulation and the dimethyl ether propellant.

7. The aerosol hairspray product of claim 1 , wherein the hairstyling formulation comprises from about 35% to about 60% of the water, by total weight of the hairstyling formulation and the dimethyl ether propellant.

8. The aerosol hairspray product of claim 1 , wherein the hairstyling formulation comprises from about 39% to about 54% of the water, by total weight of the hairstyling formulation and the dimethyl ether propellant.

9. The aerosol hairspray product of claim 1 , wherein the hairstyling formulation comprises from about 5% to about 8% of the one or more hairstyling polymers, by total weight of the hairstyling formulation and the dimethyl ether propellant.

10. The aerosol hairspray product of claim 1 , wherein the hairstyling formulation comprises 0% of the ethanol.

11. The aerosol hairspray product of claim 1 , wherein the valve housing does not comprise two or more vapor taps.

12. The aerosol hairspray product of claim 1 wherein the hairstyling formulation further comprises benzyl alcohol and wherein the hairstyling formulation comprises less than 1.5% benzyl alcohol, by total weight of the hairstyling formulation and the dimethyl ether propellant.

13. An aerosol hairspray product comprising:
1) a container ( 100 ) comprising a container wall ( 110 ) which encloses a reservoir ( 120 ), wherein the reservoir ( 120 ) comprises from about 40% to about 70% of a hairstyling formulation and from about 30% to about 60% of a dimethyl ether propellant, by total weight of the hairstyling formulation and the dimethyl ether propellant;
2) wherein the hairstyling formulation comprises:
i. from about 30% to about 60% water, by total weight of the hairstyling formulation and the dimethyl ether propellant;
ii. from about 5% to about 15% hairstyling polymer by total weight of the hairstyling formulation and the dimethyl ether propellant, wherein the hairstyling polymer is water-soluble and has a molecular weight of less than 200,000 g/mol;
iii. is substantially free of ethanol;

wherein the hairstyling formulation has a viscosity of from about 2.5 cSt to about 5.5 cSt;
3) a spraying device ( 200 ) attached to the container ( 100 ) for dispensing the hairstyling formulation ( 180 ) from the reservoir ( 120 ) of the container ( 100 );
wherein the spraying device ( 200 ) is fluidly connected to the reservoir ( 120 );
wherein the spraying device ( 200 ) comprises a spray actuator ( 150 ) and a valve ( 130 );
wherein the valve ( 130 ) comprises a valve housing ( 140 );
wherein the valve housing ( 140 ) comprises a vapor tap ( 160 );
wherein the vapor tap ( 160 ) comprises a vapor tap area;
wherein a dip tube ( 170 ) is fluidly connected to the valve ( 130 );
wherein the dip tube ( 170 ) comprises a dip tube orifice ( 175 );
wherein the dip tube orifice ( 175 ) comprises a dip tube orifice area;
wherein the ratio of the vapor tap area to the dip tube orifice area is from about 0.005 to about 0.011;
wherein the vapor tap area to dip tube orifice area ratio results in no clogs according to the Aerosol Spray Clog Measurement Method.

14. The aerosol hairspray product of claim 13 wherein the hair styling formulation comprises:
from about 5% to about 8% of one or more hairstyling polymers by total weight of the hairstyling formulation and the dimethyl ether propellant, wherein the one or more hairstyling polymers is water-soluble and has a molecular weight of less than 200,000 g/mol, wherein the one or more hairstyling polymers comprises an acrylate based system that comprises at least one monomer of acrylic acid or methacrylic acid, at least one ester of an acrylate, and a polyurethane.

15. The aerosol hairspray product of claim 13 , wherein the ratio of the vapor tap area to the dip tube orifice area is from about 0.007 to about 0.011.

16. The aerosol hairspray product of claim 13 , wherein the ratio of the vapor tap area to the dip tube orifice area is about 0.011.

17. The aerosol hairspray product of claim 16 , wherein the hairstyling formulation comprises 0% of the ethanol.

18. The aerosol hairspray product of claim 16 , wherein the hairstyling formulation comprises from about 39% to about 54% of the water, by total weight of the hairstyling formulation and the dimethyl ether propellant.

19. The aerosol hairspray product of claim 16 wherein an ejected composition is sprayed at a delivery rate of from about 0.30 g/sec to about 0.50 g/sec.

20. The aerosol hairspray product of claim 19 wherein the ejected composition comprises particles having a Dv50 droplet size of from about 40 micron to about 100 micron and a Dv90 droplet size of from about 160 micron to about 300 micron.

Assignees

• Procter & Gamble
• Procter & Gamble

Inventors

• Brown Jodi Lee
• Benson William Mercer
• Carballada Jose Antonio

Classifications

• A61K8/8182

  Copolymers of vinyl-pyrrolidones. Compositions of derivatives of such polymers · CPC title

• B65D83/20

  Actuator caps · CPC title

• B65D83/32

  Dip-tubes · CPC title

• A61K8/8158

  Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers · CPC title

• A61Q5/06

  Preparations for styling the hair, e.g. by temporary shaping or colouring · CPC title