MOISTURIZING HAND SANITIZER

• US 20090226498A1
• Filed: 03/07/2008
• Published: 09/10/2009
• Est. Priority Date: 03/07/2008
• Status: Active Grant

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Wenzel, Scott W., Flugge-Berendes, Lisa Ann, Cunningham, Corey Thomas
• Granted Patent: US 8,840,911 B2
• Time in Patent Office: Days
• US Class Current: 424/411
• CPC Class Codes: A61K 31/045 Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
• CPC Class Codes: A61K 8/31 Hydrocarbons
• CPC Class Codes: A61K 8/34 Alcohols
• CPC Class Codes: A61K 8/39 Derivatives containing from 2 to 10 oxyalkylene groups
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61P 17/16 Emollients or protectives, e.g. against radiation
• CPC Class Codes: A61Q 17/005 Antimicrobial preparations

Abstract

The present disclosure generally relates to moisturizing hand sanitizers including alcohols that are effective in killing microorganisms while providing a moisturizing benefit to the user'"'"'s skin. More particularly, the alcohol-based hand sanitizers include a high internal phase emulsion which allows moisturizers or skin protectants such as emollients and/or silicones to be stably incorporated into the sanitizer.

Claims

1. A moisturizing hand sanitizer comprising water, an alcohol, and a high internal phase emulsion, the high internal phase emulsion comprising an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, wherein the high internal phase emulsion comprises an aqueous phase in an amount of about 30% (by weight of the emulsion) or less.

2. The sanitizer of claim 1 wherein the alcohol is present in the sanitizer in an amount of from about 20% (by weight of the sanitizer) to about 95% (by weight of the sanitizer).

3. The sanitizer of claim 1 wherein the alcohol is selected from the group consisting of methanol, ethanol, propanol, isopropyl alcohol, butanol, t-butanol, 2-butanol, pentanol, hexanol, and combinations thereof.

4. The sanitizer of claim 1 further comprising a humectant.

5. The sanitizer of claim 4 wherein the humectant is present in the sanitizer in an amount of from about 0.1% (by weight of the sanitizer) to about 10% (by weight of the sanitizer).

6. The sanitizer of claim 4 wherein the humectant is selected from the group consisting of glycerin, glycerin derivatives, sodium hyaluronate, hyaluronic acid, betaine, amino acids, glycosaminoglycans, honey, sorbitol, glycols, propylene glycol, polyols, sugars, hydrogenated starch hydrolysates, sodium PCA, lactic acid, lactates, urea, and combinations thereof.

7. The sanitizer of claim 1 wherein the high internal phase emulsion is present in the sanitizer in an amount of from about 0.1% (by weight of the sanitizer) to about 10% (by weight of the sanitizer).

8. The sanitizer of claim 1 wherein the high internal phase emulsion is present in the sanitizer in an amount of from about 0.25% (by weight of the sanitizer) to about 5% (by weight of the sanitizer).

9. The sanitizer of claim 1 wherein the emollient is selected from the group consisting of petrolatum, petrolatum based oils, vegetable based oils, mineral oils, natural or synthetic oils, lanolin and its derivatives, fatty esters, glycerol esters and derivatives, propylene glycol esters and derivatives, alkoxylated carboxylic acids, alkoxylated alcohols, fatty alcohols, fatty acids, and combinations thereof.

10. The sanitizer of claim 1 wherein the emollient is present in the high internal phase emulsion in an amount of from about 0.01% (by weight of the emulsion) to about 90% (by weight of the emulsion).

11. The sanitizer of claim 1 wherein the emulsifier is present in the high internal phase emulsion in an amount of from about 0.01% (by weight of the emulsion) to about 20% (by weight of the emulsion).

12. The sanitizer of claim 1 wherein the silicone is selected from the group consisting of dimethicone, cyclomethicone, polyalkylsiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes, polysiloxane gums, polyether siloxane copolymers, dimethicone polysiloxane, dimethiconol, polysiloxanes, polysiloxane copolymers, polyalkyl aryl silanes, polyaryl siloxanes, polyalkyl siloxanes, polyalkyl aryl silanes, polysiloxane copolymers, alkyl dimethicones, alkylmethicones, alkyldimethicone copoloyls, phenyl silicones, alkyl trimethylsilanes, dimethicone crosspolymer, trisiloxane, and combinations thereof.

13. The sanitizer of claim 1 wherein the silicone is present in the high internal phase emulsion in an amount of from about 0.01% (by weight of the emulsion) to about 90% (by weight of the emulsion).

14. The sanitizer of claim 1 wherein the emollient is petrolatum and the silicone is selected from the group consisting of dimethicone, cyclopentasiloxane, dimethiconol, dimethicone crosspolymer, and trisiloxane.

15. The sanitizer of claim 1 further comprising a component selected from the group consisting of a disinfectant, a viscosity enhancer, a fragrance, a pH modifier, a skin conditioning agent, and combinations thereof.

16. The sanitizer of claim 1 wherein the sanitizer comprises from about 1% (by weight of the sanitizer) to about 90% (by weight of the sanitizer) water, from about 20% (by weight of the sanitizer) to about 95% (by weight of the sanitizer) of the alcohol, from about 0.01% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of a humectant, and from about 0.1% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of the high internal phase emulsion.

17. The sanitizer of claim 1 wherein the high internal phase emulsion has a mean droplet size of about 5 microns or less.

18. A wet wipe comprising:

a wipe substrate, and

a moisturizing hand sanitizer comprising water, an alcohol, and a high internal phase emulsion, the high internal phase emulsion comprising an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, wherein the high internal phase emulsion comprises an aqueous phase in an amount of about 30% (by weight of the emulsion) or less.

19. The wet wipe of claim 18, wherein the sanitizer comprises from about 1% (by weight of the sanitizer) to about 90% (by weight of the sanitizer) water, from about 20% (by weight of the sanitizer) to about 95% (by weight of the sanitizer) of the alcohol, and from about 0.1% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of the high internal phase emulsion.

20. The wet wipe of claim 18 further comprising from about 0.01% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of a humectant.

21. A method of making a moisturizing hand sanitizer, the method comprising

combining from about 0.1% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of a high internal phase emulsion, from about 1% (by weight of the sanitizer) to about 90% (by weight of the sanitizer) water, and from about 20% (by weight of the sanitizer) to about 95% (by weight of the sanitizer) of an alcohol to form the sanitizer,

wherein the high internal phase emulsion comprises an emulsifier and a skin protectant selected from the group consisting of an emollient, a silicone, and combinations thereof, and wherein the high internal phase emulsion comprises an aqueous phase in an amount of about 30% (by weight of the emulsion) or less, and

wherein the sanitizer is formed at room temperature.

22. The method of claim 21 further comprising combining from about 0.01% (by weight of the sanitizer) to about 10% (by weight of the sanitizer) of a humectant with the water, the alcohol, and the high internal phase emulsion.