Oral care whitening compositions

• US 9,931,292 B2
• Filed: 12/20/2011
• Issued: 04/03/2018
• Est. Priority Date: 12/20/2011
• Status: Active Grant

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Boyd, Thomas, Ontumi, Dennis, Mandadi, Prakasarao, Chopra, Suman
• Primary Examiner(s): WEBB, WALTER E
• Application Number:
  US14/366,340
• Publication Number:
  US 20150037266A1
• Time in Patent Office: 2,296 Days
• Field of Search: 424 53
• CPC Class Codes: A61C 19/066 Bleaching devices; Whitening agent applicators for teeth, e.g. trays or strips
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 2800/40 Chemical, physico-chemical or functional or structural properties of particular ingredients
• CPC Class Codes: A61K 2800/48 Thickener, Thickening system
• CPC Class Codes: A61K 2800/54 Polymers characterized by specific structures/properties
• CPC Class Codes: A61K 2800/872 Pencils; Crayons; Felt-tip pens
• CPC Class Codes: A61K 8/042 Gels
• CPC Class Codes: A61K 8/22 Peroxides; Oxygen; Ozone
• CPC Class Codes: A61K 8/49 containing heterocyclic compounds
• CPC Class Codes: A61K 8/8176 Homopolymers of N-vinyl-pyrrolidones. Compositions of derivatives of such polymers
• CPC Class Codes: A61K 8/89 Polysiloxanes
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/892 modified by a hydroxy group, e.g. dimethiconol
• CPC Class Codes: A61K 8/92 Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses

Abstract

Described herein are whitening compositions comprised of a peroxide component, and an adhesion system, which effectively provide whitening using a remarkably low level of peroxide. Methods of making and using these compositions are also described herein.

Claims

1. A non-aqueous oral care composition comprising:

a peroxide component comprising a peroxide source in the amount of 0.05% to 0.15% of the total weight of the composition; and

40% to 80% of an adhesion system comprising;

a hydrophobic component comprising a silicone adhesive, a silicone fluid and a dental surface adhesion enhancing agent comprising crosslinked polyvinylpyrrolidone that is not complexed with a peroxide source;

wherein the composition when applied to the teeth is sufficiently viscous to form an adherent, continuous layer on a dental surface and deliver an effective amount of said peroxide source to a tooth surface

wherein the composition is substantially anhydrous.

2. The composition of claim 1 wherein the peroxide source is selected from the group consisting of hydrogen peroxide;

urea peroxide, sodium percarbonate, sodium perborate; and

a combination of two or more thereof.

3. The composition of claim 1, wherein the peroxide component further comprises cross-linked polyvinylpyrrolidone, wherein the peroxide source is complexed with the cross-linked polyvinyl pyrrolidone.

4. The composition of claim 1 wherein the peroxide source is hydrogen peroxide.

5. The composition of claim 1 wherein the peroxide source is present in an amount from about 0.08% to about 0.12%, by weight of the composition.

6. The composition of claim 1, wherein the peroxide source is present in the amount of about 0.1%, by weight of the composition.

7. The composition of claim 1, wherein the silicone adhesive is a pressure sensitive silicone adhesive.

8. The composition of claim 7, wherein the pressure sensitive silicone adhesive is a copolymer prepared by condensing a silicone resin with a dihydroxy polydiorganosiloxane.

9. The composition of claim 8, wherein the dihydroxy polydiorganosiloxane is dihydroxy polydimethylsiloxane.

10. The composition of claim 1, wherein the silicone resin is a silanol-containing silicone resin.

11. The composition of claim 1, wherein the dental surface adhesion enhancing agent is present in an amount of about 15% to about 25%, by weight, of the composition.

12. The composition of claim 1, wherein the dental surface adhesion enhancing agent is present in the amount of about 16% to about 20%, by weight, of the composition.

13. The composition of claim 1, wherein the dental surface adhesion enhancing agent is present at a concentration of about 18%, by weight, of the composition.

14. A method for whitening a tooth comprising applying a composition of claim 1 to a tooth of a mammal.

15. The method of claim 14, wherein the composition is applied using a pen.

16. The method of claim 14, wherein the composition is maintained on the surface of the tooth for a plurality of minutes.