Soft solid oil-in-water emulsion comprising a mixture of nonionic surfactants, a water-soluble polysaccharide and a wax comprising at least one ester

Patent metadata

Field	Value
Publication number	US-10076482-B2
Application number	US-201414769235-A
Country	US
Kind code	B2
Filing date	Feb 14, 2014
Priority date	Feb 21, 2013
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

The present invention relates to a composition in the form of an oil-in-water emulsion, comprising, in a cosmetically acceptable medium: A) a continuous aqueous phase and B) an oily phase dispersed in the said aqueous phase and comprising at least one hydrocarbon-based oil; C) at least one mixture consisting of: i) at least one nonionic surfactant containing a saturated linear hydrocarbon-based chain comprising at least 16 carbon atoms, the said surfactant being other than a fatty alcohol, and ii) at least one fatty alcohol chosen from: —a pure fatty alcohol comprising more than 16 carbon atoms; —a mixture consisting exclusively of fatty alcohols containing at least 16 carbon atoms and comprising at least 50% by weight of fatty alcohol containing at least 18 atoms relative to the weight of the fatty alcohol mixture; and D) at least one wax with a melting point of greater than 45° C. comprising one or more C 40 -C 70 ester compounds and not comprising any C 20 -C 39 ester compounds, in an amount from 1 to 10% by weight relative to the total weight of the composition and E) at least one water-soluble polysaccharide; the said composition having a hardness measured at 32° C. and at a humidity of 40% ranging from 20 kPa to 200 kPa and preferably ranging from 25 kPa to 150 kPa. The present invention also relates to a cosmetic process for treating and/or caring for human keratin materials, characterized in that it consists in applying to the surface of the keratin material a composition as defined previously. The present invention also relates to a cosmetic process for treating human perspiration and/or perspiration-related body odor, which consists in applying to the surface of a human keratin material a composition as defined previously comprising at least one deodorant active agent and/or one antiperspirant active agent.

First claim

The invention claimed is:

1. Composition in the form of a soft solid oil-in-water emulsion comprising, in a cosmetically acceptable medium:
A) a continuous aqueous phase and
B) an oily phase dispersed in the said aqueous phase and comprising at least one hydrocarbon-based oil;
C) at least one mixture consisting of:
i) at least one nonionic surfactant containing a saturated linear hydrocarbon-based chain comprising at least 16 carbon atoms, the said surfactant being other than a fatty alcohol, and
ii) at least one fatty alcohol selected from the group consisting of
a pure fatty alcohol comprising more than 16 carbon atoms; and
a mixture consisting exclusively of fatty alcohols containing at least 16 carbon atoms and comprising at least 50% by weight of fatty alcohol containing at least 18 atoms relative to the weight of the fatty alcohol mixture;

D) at least one wax with a melting point of greater than 45° C. comprising one or more C 40 -C 70 ester compounds and not comprising any C 20 -C 39 ester compounds, in an amount from 1 to 10% by weight relative to the total weight of the composition and
E) at least one water-soluble polysaccharide; the said composition having a hardness measured at 32° C. and at a humidity of 40% ranging from 20 kPa to 200 kPa.

2. Composition according to claim 1 , wherein the nonionic surfactant is selected from the group consisting of
alkylpolyglucosides in which the alkyl chain comprises at least 16 carbon atoms;
ethoxylated fatty alcohols comprising at least 16 carbon atoms;
polyglyceryl fatty esters containing a chain comprising at least 16 carbon atoms; and
mixtures thereof.

3. Composition according to claim 1 , wherein the nonionic surfactant with a hydrocarbon-based chain comprising at least 16 carbon atoms is an alkylpolyglycoside.

4. Composition according to claim 1 , in which the fatty alcohol is selected from the group consisting of:
(i) pure fatty alcohols selected from the group consisting of: stearyl alcohol, behenyl alcohol, arachidyl alcohol, and mixtures thereof; and
(ii) mixtures of fatty alcohols selected from the group consisting of:
a cetearyl alcohol comprising at least 50% by weight of stearyl alcohol relative to the weight of the fatty alcohol mixture,
mixtures based on at least one C 22 fatty alcohol, at least one C 20 fatty alcohol and at least one C 18 fatty alcohol, and
a mixture of behenyl alcohol and arachidyl alcohol.

5. Composition according to claim 1 , wherein the mixture of nonionic surfactant and of fatty alcohol is selected from the group consisting of:
a mixture of cetearyl alcohol comprising at least 50% by weight of stearyl alcohol relative to the weight of the fatty alcohol mixture, cetearylglucoside and behenyl alcohol,
a mixture comprising at least one cetearyl alcohol comprising at least 50% by weight of stearyl alcohol relative to the weight of the fatty alcohol mixture and cetearylglucoside, and
a mixture of arachidyl alcohol, behenyl alcohol and arachidylglucoside.

6. Composition according to claim 5 , wherein the mixture of nonionic surfactant and of fatty alcohol is a mixture of behenyl alcohol, arachidyl alcohol and arachidylpolyglucoside.

7. Composition according to claim 1 , wherein the wax is selected from the group consisting of candelilla wax, rice bran wax, beeswax and sunflower wax, and mixtures thereof.

8. Composition according to claim 1 , wherein that the hydrocarbon-based oil(s) are present in concentrations ranging from 5% to 30% by weight relative to the total weight of the composition.

9. Composition according to claim 1 , wherein the oily phase comprises at least one non-volatile hydrocarbon-based oil and optionally at least one non-volatile silicone oil.

10. Composition according to claim 9 , in which the non-volatile hydrocarbon-based oil is selected from the group consisting of triglycerides, fatty acid esters, ethers and mixtures thereof.

11. Composition according to claim 1 , wherein the concentration of the oily phase ranges from 10% to 30% relative to the total weight of the composition and the concentration of the aqueous phase ranges from 50% to 90% relative to the total weight of the composition.

12. Composition according to claim 1 , wherein the water-soluble polysaccharide is a starch.

13. Composition according to claim 12 , in which the starch is a distarch phosphate.

14. Composition according to claim 1 , wherein the water-soluble polysaccharide(s) represent from 0.5% to 6% by weight relative to the total weight of the composition.

15. Composition according to claim 1 , wherein the wax(es) with a melting point of greater than 45° C. comprising one or more C 40 -C 70 ester compounds and not comprising any C 20 -C 39 ester compounds represent from 2 to 8% by weight relative to the total weight of the composition.

16. Composition according to claim 1 , which further comprises at least one nonionic associative polymer.

17. Composition according to claim 1 , which further comprises at least one antiperspirant active agent and/or one deodorant active agent.

18. Cosmetic process for treating and/or caring for human keratin materials, which comprises applying to the surface of the keratin material a composition as defined in claim 1 .

19. Cosmetic process for treating human perspiration and/or perspiration-related body odour, which comprises applying to the surface of a human keratin material a composition as defined in claim 17 .

20. Composition according to claim 2 , wherein the nonionic surfactant with a hydrocarbon-based chain comprising at least 16 carbon atoms is an alkylpolyglycoside.

21. Composition according to claim 1 , having a hardness measured at 32° C. and at a humidity of 40% ranging from 25 kPa to 150 kPa.

Assignees

• Oreal

Inventors

• Aubrun Odile
• Springinsfeld Fabrice

Classifications

• A61K8/0229 Primary

  Sticks · CPC title

• A61K8/604

  Alkylpolyglycosides; Derivatives thereof, e.g. esters · CPC title

• A61K8/922

  of vegetable origin · CPC title

• A61K8/927

  of insects, e.g. shellac · CPC title

• A61K8/26

  Aluminium; Compounds thereof · CPC title