Aqueous wax dispersions containing volatile solvents

Patent metadata

Field	Value
Publication number	US-10626294-B2
Application number	US-201213651768-A
Country	US
Kind code	B2
Filing date	Oct 15, 2012
Priority date	Oct 15, 2012
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

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; (c) at least one volatile solvent; and (d) 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 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, or C30-45 alkyldimethylsilyl propylsilsesquioxane, and wherein the at least one wax is present in an amount ranging 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; and
(ii) from about 5% to about 20% by weight, based on the total weight of the surfactant mixture, of at least one ionic surfactant comprising at least one anionic surfactant;

 wherein the surfactant mixture is free of amphoteric surfactants;
(c) from about 1% to about 10% by weight, based on the total weight of the aqueous dispersion, of at least one volatile solvent comprising isododecane;
(d) water; and
(e) 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, or perfumes.

2. The aqueous dispersion of claim 1 , wherein the (a) at least one solid wax particle has a hardness value ranging from about 0.001 MPa to about 15 MPa.

3. The aqueous dispersion of claim 1 , wherein the (a) at least one solid wax particle is of a spherical, ellipsoidal or oval shape.

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

5. 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, or mixtures thereof.

6. The aqueous dispersion of claim 1 , wherein the weight ratio of the ionic surfactant to the nonionic surfactant ranges from about 5:95 to 30:70.

7. The aqueous dispersion of claim 1 , wherein the at least one nonionic surfactant 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, or mixtures thereof.

8. The aqueous dispersion of claim 1 , wherein the at least one anionic surfactant is chosen from acyl glutamates, alkyl sulfates and their salts, alkyl ether sulfates and their salts, alkyl ether carboxylates, dipalmitoylethyl hydroxyethylmonium methosulfate, distearoylethyl hydroxyethylmonium methosulfate, disodium stearoyl glutamate and sodium stearoyl glutamate, or mixtures thereof.

9. The aqueous dispersion of claim 1 , wherein the solid wax particle is obtained by:
(1) heating the at least one wax and the at least one volatile solvent; and
(2) mixing the (a) at least one solid wax particle and the least one volatile solvent in (1) with the surfactant mixture and the water at a temperature above the melting point of the (a) at least one solid wax particle by a shearing action.

10. The aqueous dispersion of claim 9 , wherein the shearing action is accomplished using a mixing speed ranging from about 3000 rpm to about 9000 rpm.

11. A composition for coating the surface of a keratinous substrate, comprising the aqueous dispersion of claim 1 .

12. The composition of claim 11 , wherein the aqueous dispersion is present in an amount ranging from about 1% to about 20% by weight, based on the total weight of the composition.

13. The composition of claim 11 , wherein the composition comprises a cosmetically acceptable carrier.

14. The composition of claim 11 , wherein the composition comprises at least one auxiliary agent chosen from liquid lipids/oils, film forming polymers, rheology modifiers, sunscreens agents, pigments, dyes, silica, clays, humectants and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, shine agents, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, or plant extracts.

15. The composition of claim 11 , wherein the composition is heat-activated.

16. The composition of claim 11 , wherein the composition comprises a cosmetically, dermatologically or physiologically acceptable carrier selected from water, silicones, polyols, glycols, glycol ethers, oils, or mixtures thereof.

17. 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, or C30-45 alkyldimethylsilyl propylsilsesquioxane, and wherein the at least one wax is present in an amount ranging 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, or 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 cetrimonium chloride, behentrimonium chloride, or mixtures thereof;

 wherein the surfactant mixture is free of amphoteric surfactants;
(c) from about 1% to about 10% by weight, based on the total weight of the aqueous dispersion, of at least one volatile solvent comprising isododecane;
(d) water; and
(e) 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, or perfumes.

18. A composition for coating the surface of a keratinous substrate, comprising the aqueous dispersion of claim 17 .

19. The composition of claim 18 , wherein the aqueous dispersion is present in an amount ranging from about 1% to about 20% by weight, based on the total weight of the composition.

20. The composition of claim 18 , wherein the composition comprises a cosmetically acceptable carrier.

21. The composition of claim 18 , wherein the composition comprises at least one auxiliary agent chosen from liquid lipids/oils, film forming polymers, rheology modifiers, sunscreens agents, pigments, dyes, silica, clays, humectants and moisturizing agents, emulsifying agents, structuring agents, propellants, surfactants, shine agents, conditioning agents, cosmetically, dermatologically and pharmaceutically active agents, vitamins, or plant extracts.

22. The composition of claim 18 , wherein the composition is heat-activated.

23. The composition of claim 18 , wherein the composition comprises a cosmetically, dermatologically or physiologically acceptable carrier comprising water, silicones, polyols, glycols, glycol ethers, oils, or mixtures thereof.

24. The aqueous dispersion of claim 17 , wherein the (a) at

Assignees

• Oreal

Inventors

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

Classifications

• A61K8/927

  of insects, e.g. shellac · CPC title

• A61K2800/412

  Microsized, i.e. having sizes between 0.1 and 100 microns · CPC title

• A61Q5/12

  Preparations containing hair conditioners · CPC title

• A61K8/044

  Suspensions · CPC title

• C08L91/06

  Waxes · CPC title