Dentifrice compositions with improved fluoride stability

Patent metadata

Field	Value
Publication number	US-10213370-B2
Application number	US-201615347821-A
Country	US
Kind code	B2
Filing date	Nov 10, 2016
Priority date	Nov 13, 2015
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A dentifrice composition containing water, calcium-containing abrasive, fluoride ion source, and alkaline metal carbonate with improved fluoride stability.

First claim

What is claimed is:

1. A dentifrice composition comprising:
(a) 45% to 75%, by weight of the composition, of water;
(b) 25% to 50%, by weight of the composition, of a calcium-containing abrasive;
(c) 0.0025% to 2%, by weight of the composition, of a fluoride ion source;
(d) greater than 0.3%, by weight of the composition, of alkaline metal carbonate;
(e) from 0.001% to 3%, by weight of the composition, of an alkali metal phosphate; and
(f) a pH greater than 9.

2. The dentifrice composition according to claim 1 , wherein the alkali metal phosphate is selected from the group consisting of monosodium phosphate, trisodium phosphate, and combinations thereof.

3. The dentifrice composition according to claim 2 , wherein the alkali metal phosphate comprises from 0.01% to 3%, by weight of the composition, monosodium phosphate.

4. The dentifrice composition according to claim 1 , wherein the alkaline metal carbonate is selected from the group consisting of sodium carbonate, potassium carbonate, or combination thereof.

5. The dentifrice composition according to claim 4 , wherein the alkaline metal carbonate comprises sodium carbonate.

6. The dentifrice composition according to claim 4 , wherein the composition comprises from 0.5% to 1.8%, by weight of the composition, alkaline metal carbonate.

7. The dentifrice composition according to claim 1 , wherein the calcium-containing abrasive comprises 27% to 47%, by weight, calcium carbonate.

8. The dentifrice composition according to claim 1 , wherein the fluoride ion source comprises 0.5% to 1.5%, sodium monofluorophosphate.

9. The dentifrice composition according to claim 1 , comprising from 50% to 60%, by weight of the composition, water.

10. The dentifrice composition according to claim 1 , further comprising a thickening system, wherein the thickening system is selected from the group consisting of a thickening polymer, a thickening silica, and combinations thereof.

11. The dentifrice composition according to claim 10 , wherein the thickening system comprises a thickening polymer wherein the thickening polymer is selected from the group consisting of carboxymethyl cellulose, linear sulfated polysaccharide, natural gum, and combinations thereof.

12. The dentifrice composition according to claim 10 , wherein the thickening system comprises a thickening polymer wherein the thickening polymer comprises from 0.01% to 3%, by weight of the composition, carboxymethyl cellulose.

13. The dentifrice composition according to claim 10 , wherein the thickening system comprises a thickening polymer wherein the thickening polymer comprises from 0.01% to 2.5%, by weight of the composition, linear sulfated polysaccharide.

14. The dentifrice composition according to claim 13 , wherein the linear sulfated polysaccharide comprises carrageenan.

15. The dentifrice composition according to claim 10 , wherein the thickening system comprises a thickening polymer wherein the thickening polymer comprises from 0.01% to 7%, by weight of the composition, natural gum.

16. The dentifrice composition according to claim 10 , wherein the thickening system comprises from 0.01% to 10%, by weight of the composition, thickening silica.

17. The dentifrice composition according to claim 10 , wherein the composition comprises from 0.5% to 4%, by weight, thickening system.

18. A dentifrice composition comprising:
(a) 45% to 75%, by weight of the composition, of water;
(b) 25% to 50%, by weight of the composition, of a calcium-containing abrasive;
(c) 0.0025% to 2%, by weight of the composition, of a fluoride ion source;
(d) greater than 0.3% by weight of the composition, of an alkaline metal carbonate;
(e) from 0.001% to 3%, by weight of the composition, of an alkali metal phosphate,
(f) a pH greater than 8; and
wherein the composition is free of a humectant selected from sorbitol, glycerin, and combinations thereof.

Assignees

• Procter & Gamble

Inventors

• Basa Swapna
• Berta James Albert
• Yang Hongmei
• Strand Ross

Classifications

• A61K8/19

  containing inorganic ingredients · CPC title

• A61K8/21 Primary

  Fluorides; Derivatives thereof · CPC title

• A61K8/24

  Phosphorous; Compounds thereof · CPC title

• A61K2800/52

  Stabilizers · CPC title

• A61Q11/00

  Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses · CPC title