Compositions for imparting superhydrophobicity
Compositions and methods are disclosed for imparting water repellency to the hair. The compositions generally comprise a first hydrophobic particulate material having a coefficient of dynamic friction of 0.5 or greater in combination with a second hydrophobic particulate material having a coefficient of dynamic friction less than 0.5.
1. A method for rendering keratin fiber water-repellant comprising applying thereto a composition comprising:
(a) a first hydrophobic particulate material, wherein the first hydrophobic particulate material consisting of octylsilyl-functionalized fumed alumina;
(b) a second hydrophobic particulate material having a coefficient of dynamic friction less than 0.5 wherein said second hydrophobic particulate material comprises substantially spherical particles of a polymer selected from the group consisting of polyethylene, polypropylene, polytetrafluoroethylene (PTFE), polyvinylchloride (PVC), polyvinyledenefluoride (PVDF), polyamide-imide, polymethylmethacrylate (PMMA), polyetheretherketone (PEEK), polyethylene terephthalate polyester (PETP), polystyrene, polydimethylsiloxanes, polymethylsilsesquioxane, polyamide powder, Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer, silicone elastomer, Polysilicones, and combinations thereof;
(c) optionally, one or more of: (i) a shine enhancing agent, (ii) a hydrophobic film former, (iii) non-volatile liquid constituents, (iv) a filler, (v) a cationic hair conditioning agent, and (vi) other active and inactive ingredients; and
(d) a volatile solvent;
wherein said first and second hydrophobic particulate materials collectively are from about 0.01% to about 10% by weight, based on the entire weight of the composition; and wherein a weight ratio of said first hydrophobic particulate material to said second hydrophobic particulate material is from about 1:10 to about 10:1; and wherein an aggregate weight percentage of all non-volatile liquid constituents in said composition is less than 10%, based on the entire weight of the composition; and
allowing the volatile solvent present to evaporate.
2. A method for rendering keratin fiber water-repellant comprising applying thereto a composition comprising:
(a) a first hydrophobic particulate material, wherein the first hydrophobic particulate material consisting of octylsilyl-functionalized fumed alumina;
(b) a second hydrophobic particulate material having a coefficient of dynamic friction less than 0.5 wherein the second hydrophobic particulate material is VinylDimethicone/Methicone Silsesquioxane Crosspolymer (INCI);
(c) optionally, one or more of: (i) a shine enhancing agent, (ii) a hydrophobic film former, (iii) non-volatile liquid constituents, (iv) a filler, (v) a cationic hair conditioning agent, and (vi) other active and inactive ingredients; and
(d) a volatile solvent;
wherein said first and second hydrophobic particulate materials collectively are from about 0.01% to about 10% by weight, based on the entire weight of the composition; and wherein a weight ratio of said first hydrophobic particulate material to said second hydrophobic particulate material is from about 1:10 to about 10:1; and wherein an aggregate weight percentage of all non-volatile liquid constituents in said composition is less than 10%, based on the entire weight of the composition; and
allowing the volatile solvent present to evaporate.
3. The method according to claim 1 , wherein the volatile solvent is present in an amount of from 90% to 99.8%.
4. The method according to claim 1 , wherein the film former is present in an amount of from about 0.1% to about 5% by weight.
5. The method according to claim 1 , wherein the conditioning agent is present in an amount of from about 0.05% to about 1.5% by weight.
6. The method according to claim 1 , wherein the non-volatile liquid constituents are present in an amount of less than about 2% by weight.
7. The method according to claim 1 , wherein the shine enhancing agent is present in an amount of less than about 5% by weight.
8. The method according to claim 1 , wherein said volatile solvent comprises a volatile silicone.
9. The method according to claim 8 , wherein the volatile solvent comprises water and is a water-in-oil emulsion.
10. The method according to claim 1 , wherein said first and second hydrophobic particulate materials collectively are from about 0.1% to about 5% by weight of said composition.
11. The method according to claim 1 , wherein the weight ratio of the first hydrophobic particulate material to the second hydrophobic particulate material is from about 1:5 to about 2:1.
12. The method according to claim 1 , wherein the cationic conditioning agent is present in an amount of from about 0.05% to about 0.5% by weight, wherein the non-volatile liquid constituents are present in an amount of less than about 2% by weight, and wherein the shine enhancing agent is present in an amount of less than about 5% by weight.
13. The method according to claim 12 , wherein the volatile solvent is present in an amount of from 90% to 99.8% by weight.
14. The method according to claim 13 , wherein the film former is present in the composition in an amount of from about 0.1% to about 5% by weight.
15. The method according to claim 1 , wherein said second hydrophobic particulate material is VinylDimethicone/Methicone Silsesquioxane Crosspolymer (INCI).
16. The method according to claim 2 , wherein the volatile solvent is present in an amount of from 90% to 99.8%.
17. The method according to claim 16 , wherein said second hydrophobic particulate material has a coefficient of dynamic friction less than 0.3.
18. The method according to claim 2 , wherein the film former is present in an amount of from about 0.1% to about 5% by weight.
19. The method according to claim 2 , wherein the cationic conditioning agent is present in an amount of from about 0.05% to about 0.5% by weight.
20. The method according to claim 2 , wherein the non-volatile liquid constituents are present in an amount of less than about 2% by weight.
21. The method according to claim 2 , wherein the shine enhancing agent is present in an amount of less than about 5% by weight.
22. The method according to claim 2 , wherein said volatile solvent comprises a volatile silicone.
23. The method according to claim 22 , wherein the volatile solvent comprises water and is a water-in-oil emulsion.
24. The method according to claim 2 , wherein said first and second hydrophobic particulate materials collectively are from about 0.1% to about 5% by weight of said composition.
25. The method according to claim 2 , wherein the weight ratio of the first hydrophobic particulate material to the second hydrophobic particulate material is from about 1:5 to about 2:1.
26. The method according to claim 2 , wherein the cationic conditioning agent is present in an amount of from about 0.05% to about 0.5% by weight, wherein the non-volatile liquid constituents are present in an amount of less than about 2% by weight, and wherein the shine enhancing agent is present in an amount of less than about 5% by weight.
27. The method according to claim 26 , wherein the volatile solvent is present in an amount of from 90% to 99.8% by weight.
28. The method according to claim 27 , wherein the film former is present in the composition in an amount of from about 0.1% to about 5% by weight.