Stable emulsion for prevention of skin irritation and articles using same

• US 9,393,197 B2
• Filed: 06/24/2013
• Issued: 07/19/2016
• Est. Priority Date: 06/29/2012
• Status: Active Grant

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Cunningham, Corey Thomas, Seidling, Jeffery Richard, Kroll, Lisa Marie, Mundschau, Stacy Averic
• Primary Examiner(s): Vu, Jake
• Application Number:
  US13/925,788
• Publication Number:
  US 20140004166A1
• Time in Patent Office: 1,121 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61K 2300/00 Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
• CPC Class Codes: A61K 31/695 Silicon compounds
• CPC Class Codes: A61K 35/02 from inanimate materials carbon A61K33/44
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/26 Aluminium; Compounds thereof
• CPC Class Codes: A61K 8/602 Glycosides, e.g. rutin
• CPC Class Codes: A61K 8/733 Alginic acid; Salts thereof
• CPC Class Codes: A61K 8/8158 Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
• 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: A61K 9/107 Emulsions ; Emulsion preconcentrates; Micelles composition of emulsions A61K47/00
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders
• CPC Class Codes: A61Q 19/005 Preparations for sensitive skin
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

An emulsion suitable for incorporation into wet wipes used to clean urine and fecal matter from the skin. The emulsion includes silicone oil and clay. Phase separation is prevented with an emulsification system that includes a gum blend and either a Gemini surfactant restrained to the oil phase or a glucoside-based emulsifier. The gum blend includes at least one gum and propylene glycol alginate.

Claims

1. An emulsion for the prevention of skin irritation, the emulsion comprising:

a Gemini surfactant present only in the oil phase or a glucoside-based emulsifier;

a combination of a gum and propylene glycol alginate, wherein the combination is 0.01% to 0.5% by weight of the emulsion;

a polymeric rheology modifier comprising an acryloyldimethyl taurate monomer;

1% to 10% by weight silicone oil;

90% to 98% by weight water; and

0.1% to 3% by weight clay.

2. The emulsion of claim 1 wherein the Gemini surfactant is disodium ethylene dicocamide PEG-15 disulfate.

3. The emulsion of claim 1 wherein the silicone oil consists of dimethicone.

4. The emulsion of claim 1 wherein the silicone oil is selected from the group consisting of dimethicone, dimethiconol, ethoxylated dimethicone, amodimethicone and derivatives thereof, alkyl substituted dimethicone derivatives, phenyl trimethicone and combinations thereof.

5. The emulsion of claim 1 wherein the clay comprises water-washed smectite clay.

6. The emulsion of claim 5 wherein the clay comprises magnesium aluminum silicate.

7. The emulsion of claim 1 wherein clay is present in the amount of 0.5% to 2% by weight of the emulsion.

8. The emulsion of claim 1 having a viscosity of less than 5000 centipoise.

9. The emulsion of claim 1 further comprising a preservative.

10. The emulsion of claim 1 wherein the gum consists of xanthan gum and guar gum.

11. The emulsion of claim 1 wherein the gum is selected from the group consisting of xanthan gum, guar gum, gellan gum, acacia gum, cellulose gum, dehydroxanthan gum, sclerotium gum, locust bean gum and combinations thereof.

12. A wet wipe comprising:

a substrate having an emulsion deposited thereon, the emulsion comprising;

a Gemini surfactant only present in the oil phase or a glucoside-based emulsifier;

a gum blend comprising a gum and propylene glycol alginate, wherein the gum blend is less than or equal to 0.5% weight of the emulsion;

a polymeric rheology modifier comprising an acryloyldimethyl taurate monomer;

1% to 10% by weight silicone oil;

90% to 98% by weight water; and

0.1% to 3% by weight clay.

13. The wet wipe of claim 12 wherein the gum is selected from the group consisting of xanthan gum, guar gum, gellan gum, acacia gum, cellulose gum, dehydroxanthan gum, sclerotium gum, locust bean gum and combinations thereof.

14. The wet wipe of claim 12 wherein the silicone oil is selected from the group consisting of dimethicone, dimethiconol, ethoxylated dimethicone, amodimethicone and derivatives thereof, alkyl substituted dimethicone derivatives, phenyl trimethicone and combinations thereof.

15. The wet wipe of claim 12 wherein the clay comprises water-washed smectite clay.

16. The wet wipe of claim 12 further comprising behenyl alcohol, glyceryl stearate and glycerol stearate citrate.

17. The wet wipe of claim 12 wherein the gums are xanthan gum and guar gum, and the silicone oil is dimethicone.

18. The wet wipe of claim 17 wherein the substrate is a non-woven material.

19. The wet wipe of claim 12 wherein the substrate comprises woven fabric, spunbond fabric, meltblown fabric, knit fabric, wet-laid fabric, scrims or needle-punched webs.