Anti-chafing compositions comprising boron nitride

• US 8,663,665 B2
• Filed: 10/31/2006
• Issued: 03/04/2014
• Est. Priority Date: 03/02/2006
• Status: Active Grant

• Current Assignee: Momentive Performance Materials Incorporated (Momentive Performance Materials Holdings LLC)
• Original Assignee: Momentive Performance Materials Incorporated (Momentive Performance Materials Holdings LLC)
• Inventors: Student, Joerg, Sun, Rickson, Scherler, Kristi, Hans, Paul, Shaffer, Gregory W., Leist, Jon
• Primary Examiner(s): Soroush, Layla
• Application Number:
  US11/554,660
• Publication Number:
  US 20080311206A1
• Time in Patent Office: 2,681 Days
• Field of Search: 424/401
• US Class Current: 424/401
• CPC Class Codes: A61K 2800/75 Anti-irritant
• CPC Class Codes: A61K 33/22 Boron compounds
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61P 17/02 for treating wounds, ulcers, burns, scars, keloids, or the like
• CPC Class Codes: A61P 29/00 Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

The invention in one aspect relates to an anti-chafing composition with improved efficacy, in one embodiment, comprising an effective amount of boron nitride suspended in a dermatologically acceptable carrier vehicle. Another embodiment relates to an anti-chafing composition in the form of a powder or a stick containing boron nitride. The present invention also relates to a method of inhibiting or reducing chafing to the skin by topically applying an effective amount of such anti-chafing composition to the skin or to a surface to be in contact with the skin.

Claims

1. An anti-chafing composition for maintaining and/or improving skin health in an area covered by an article, the composition comprising an aqueous dermatologically acceptable carrier and from 0.5 to 15 wt. % of boron nitride particles, containing boron nitride particles having a particle size of from about 10 to about 250 μ

m, wherein the composition, upon topical application onto skin, leaves a layer comprising a chafe-reducing effective amount of boron nitride particles on the skin.

2. The anti-chafing composition of claim 1, further comprising a dermatologically acceptable carrier selected from the group consisting of organic solutions, gels, an aerosols, emulsifiers, aqueous lotions, water-in-oil emulsions, oil-in-water emulsions, and surfactants.

3. The anti-chafing composition of claim 1, wherein the composition upon topical application on the skin, leaves a residual layer having an L-value index ranging from 5 to about 100.

4. The anti-chafing composition of claim 1, in the form of an aerosol, pump spray, liquid, roll-on, lotion, cream, gel, foam, powder, or stick.

5. The anti-chafing composition of claim 1, wherein the composition is topically dispensed on the skin using a pump bottle for single-unit dosages.

6. The anti-chafing composition of claim 1, wherein the composition is topically dispensed on the skin using an absorbent flexible substrate.

7. The anti-chafing composition of claim 1, comprising boron nitride having an aspect ratio from about 10 to about 300.

8. The anti-chafing composition of claim 1, comprising boron nitride having an oxygen content from 0.2 to 2.5 wt %.

9. The anti-chafing composition of claims 1, comprising boron nitride having a graphitization index of less than 7.

10. The anti-chafing composition of claims 1, where the dermatologically acceptable carrier comprises a volatile silicone or a non-volatile silicone.

13. The anti-chafing composition of claim 1, wherein the boron nitride particles have a primary average particle size of less than 20 μ

m.

11. An anti-chafing composition consisting essentially of boron nitride having an average particle size from about 10 to about 250 μ

m, wherein the composition has a density ranging from 0.20 to 1.500 g/cm³, and an O₂ concentration ranging from 0.2 to 1.3 wt. %, wherein the composition, upon topical application onto skin, leaves a layer comprising a chafe-reducing effective amount of boron nitride particles on the skin.

12. The anti-chafing composition of claim 11, wherein the composition contains from 95 to 99.99 wt. % boron nitride and 0.01 to 5 wt. % carbon.