Aqueous wax dispersions

Patent metadata

Field	Value
Publication number	US-10413496-B2
Application number	US-201213651732-A
Country	US
Kind code	B2
Filing date	Oct 15, 2012
Priority date	Oct 15, 2012
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

The present invention is directed to an aqueous dispersion comprising: (a) at least one solid wax particle having a particle size ranging from equal to or greater than 1 micron to about 100 microns and comprising at least one wax having a melting point of greater than 35° C.; (b) a surfactant mixture comprising at least one nonionic surfactant and at least one ionic surfactant; and (c) water. The aqueous dispersion may be employed in compositions capable of delivering benefits to various substrates, for example, keratinous substrates such as skin and hair.

First claim

What is claimed is:

1. An aqueous dispersion comprising:
(a) at least one solid wax particle having a particle size ranging from equal to or greater than 1 micron to about 100 microns and comprising at least one wax having a melting point of greater than 35° C. and up to about 70° C.;
(b) from about 1% to about 5% by weight, based on the total weight of the aqueous dispersion, of a surfactant mixture comprising:
(i) at least one nonionic surfactant; and
(ii) at least one ionic surfactant comprising at least one anionic surfactant chosen from acyl glutamates, alkyl sulfates and their salts, alkyl ether sulfates and their salts, acyl glutamates, alkyl ether carboxylates, and mixtures thereof and present in an amount of from about 5% to about 30% by weight, based on the total weight of the surfactant mixture; and

(c) water.

2. The aqueous dispersion of claim 1 , wherein the least one wax is chosen from beeswax, hydrogenated myristyl olive esters, hydrogenated stearyl olive esters, VP/eicosene copolymer, ditrimethyloylpropane tetrastearate, and silsesquioxane resin wax.

3. The aqueous dispersion of claim 1 , wherein the melting point of the least one wax ranges from about 40° C. and up to about 70° C.

4. The aqueous dispersion of claim 1 , wherein the at least one wax is present in an amount of from about 10% to about 80% by weight, based on the total weight of the aqueous dispersion.

5. The aqueous dispersion of claim 1 , wherein the at least one wax is present in an amount of from about 20% to about 40% by weight, based on the total weight of the aqueous dispersion.

6. The aqueous dispersion of claim 1 , wherein the at least one wax has a hardness value of from about 0.001 MPa to about 15 MPa.

7. The aqueous dispersion of claim 1 , wherein the at least one wax has a hardness value of from 3 MPa to about 10 MPa.

8. The aqueous dispersion of claim 1 , wherein (a) has a particle size of from about 5 micron to about 80 microns.

9. The aqueous dispersion of claim 1 , wherein (a) has a particle size of from about 5 microns to about 25 microns.

10. The aqueous dispersion of claim 1 , wherein (a) is of a spherical, ellipsoidal or oval shape.

11. The aqueous dispersion of claim 1 , wherein (b)(i) has an HLB of at least 5.

12. The aqueous dispersion of claim 1 , wherein (b)(i) is chosen from polyethylene glycol ethers of glyceryl esters, sorbitan esters, silicone-based emulsifying polymers having alkoxylated groups and/or side chains, and mixtures thereof.

13. The aqueous dispersion of claim 1 , wherein (b)(i) is chosen from PEG-30 glyceryl stearate, sorbitan palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, Bis-PEG/PPG-20/5 PEG/PPG-20/5 Dimethicone, PEG/PPG-25/4 Dimethicone, Bis-(Glyceryl/Lauryl) Glyceryl Lauryl Dimethicone, Bis-PEG/PPG-14/14 Dimethicone, and mixtures thereof.

14. The aqueous dispersion of claim 1 , wherein (b)(ii) further comprises at least one cationic surfactant.

15. The aqueous dispersion of claim 1 , wherein (b)(ii) further comprises at least one cationic surfactant chosen from cetrimonium chloride, behentrimonium chloride, dipalmitoylethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmonium methosulfate, and mixtures thereof.

16. The aqueous dispersion of claim 1 , wherein the at least one anionic surfactant is chosen from disodium stearoyl glutamate and sodium stearoyl glutamate.

17. The aqueous dispersion of claim 1 , wherein (b)(ii) is present in an amount of from about 5% to about 20% by weight, based on the total weight of (b).

18. The aqueous dispersion of claim 1 , wherein (b) is present in an amount of from about 1.5% to about 3% by weight, based on the total weight of the aqueous dispersion.

19. The aqueous dispersion of claim 1 , wherein (b) is free of amphoteric surfactants.

20. The aqueous dispersion of claim 1 , wherein (a) further comprises at least one additional ingredient chosen from a wax having a melting point of 35° C. or less, oils, emulsifying polymers, sunscreen agents, pigments/dyes, silicas, talc, clays, and perfumes.

21. The aqueous dispersion of claim 1 , wherein the solid wax particle is obtained by:
(1) heating the at least one wax having a melting point of greater than 35° C. and up to about 70° C.; and
(2) mixing the at least one wax in (1) with the surfactant mixture and the water at a temperature above the melting point of the at least one wax in (1) by a shearing action.

22. The aqueous dispersion of claim 21 , wherein the shearing action is accomplished using a mixing speed of at least about 3000 rpm.

23. The aqueous dispersion of claim 22 , wherein the shearing action is accomplished using a mixing speed of from about 3000 rpm to about 9000 rpm.

24. An aqueous dispersion comprising:
(a) at least one solid wax particle having a particle size ranging from about 5 microns to about 25 microns and comprising at least one wax chosen from beeswax, hydrogenated myristyl olive esters, hydrogenated stearyl olive esters, VP/eicosene copolymer, ditrimethyloylpropane tetrastearate, and C30-45 alkyldimethylsilyl propylsilsesquioxane, and wherein the at least one wax is present in an amount of from about 20% to about 40% by weight, based on the total weight of the aqueous dispersion;
(b) from about 1.5% to about 3.0% by weight of a surfactant mixture comprising:
(i) at least one nonionic surfactant chosen from PEG-30 glyceryl stearate, sorbitan palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, Bis-PEG/PPG-20/5 PEG/PPG-20/5 Dimethicone, PEG/PPG-25/4 Dimethicone, Bis-(Glyceryl/Lauryl) Glyceryl Lauryl Dimethicone, Bis-PEG/PPG-14/14 Dimethicone, and mixtures thereof; and
(ii) from about 5% to about 20% by weight, based on the total weight of the surfactant mixture, of at least one cationic surfactant chosen from dipalmitoylethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmonium methosulfate, cetrimonium chloride, behentrimonium chloride, and mixtures thereof;

wherein the surfactant mixture is free of amphoteric surfactants;
(c) water; and
(d) optionally, at least one additional ingredient chosen from a wax having a melting point of 35° C. or less, oils, emulsifying polymers, sunscreen agents, pigments/dyes, silicas, talc, clays, and perfumes.

25. An aqueous dispersion comprising:
(a) at least one solid wax particle having a particle size ranging from about 5 microns to about 25 microns and comprising at least one wax chosen from beeswax, hydrogenated myristyl olive esters, hydrogenated stearyl olive esters, VP/eicosene copolymer, ditrimethyloylpropane tetrastearate, and C30-45 alkyldimethylsilyl propylsilsesquioxane, and wherein the at least one wax is present in an amount of from about 20% to about 40% by weight, based on the total weight of the aqueous dispersion;
(b) from about 1.5% to about 3.0% by weight of a surfactant mixture comprising:
(i) at least one nonionic surfactant chosen from PEG-30 glyceryl stearate, sorbitan palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Bis-PEG/PPG-16/16 PEG/PPG-16/16 Dimethicone, Bis-PEG/PPG-20/5 PEG/PPG-20/5 Dimethicone, PEG/PPG-25/4 Dimethicone, Bis-(Glyceryl/Lauryl) Glyceryl Lauryl Dimethicone, Bis-PEG/PPG-14/14 Dimethicone, and mixtures thereof; and
(ii) from about 5% to about 20% by weight, based on the total weight of the surfactant mixture, of at least one anionic surfactant chosen from disodium stearoyl glutamate and sodium st

Assignees

• Oreal

Inventors

• Pistorio Bradford
• Simonnet Jean-Thierry
• Singer Jim Mitchell
• Samain Henri

Classifications

• C09D191/06

  Waxes · CPC title

• A61K8/925

  of animal origin · CPC title

• A61K8/922

  of vegetable origin · CPC title

• A61K8/86

  Polyethers · CPC title

• A61K8/44

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