Oral composition

Patent metadata

Field	Value
Publication number	US-9168213-B2
Application number	US-201214008724-A
Country	US
Kind code	B2
Filing date	Apr 6, 2012
Priority date	Apr 8, 2011
Publication date	Oct 27, 2015
Grant date	Oct 27, 2015

Abstract

Provided is an oral composition which is excellent in a gloss imparting effect on teeth.
An oral composition, which comprises the following components (A) and (B):
(A) 0.01 to 3% by mass of phytic acid or a salt thereof, and (B) 0.01 to 3% by mass of pyrophosphoric acid or a salt thereof, does not comprise a polyvalent cation or comprises a polyvalent cation in an amount of less than 0.1-fold mol relative to phytic acid, has pH 5.5 to 6.5 when diluted with water to 30% by mass, has the mass ratio (B/A) between the component (A) and the component (B) is 0.2 to 3.0, and does not comprise a fluoride or has the fluoride content of less than 500 ppm in terms of fluorine atoms.

First claim

The invention claimed is:

1. An oral composition, which comprises the following components (A) and (B):
(A) 0.01 to 3% by mass of phytic acid or a salt thereof, and
(B) 0.01 to 3% by mass of pyrophosphoric acid or a salt thereof, does not comprise a polyvalent cation or comprises a polyvalent cation selected from the group consisting of aluminum, calcium, magnesium, iron and zinc in an amount of less than 0.1-fold mol relative to phytic acid, has a pH of 5.5 to 6.5 when diluted with water to 30% by mass, has a mass ratio (B/A) between the component (A) and the component (B) of 0.2 to 3.0, and does not comprise a fluoride or has a fluoride content of less than 500 ppm in terms of fluorine atoms.

2. The oral composition according to claim 1 , wherein the content of the component (A) is 0.02 to 2% by mass, and the content of the component (B) is 0.02 to 2% by mass.

3. The oral composition according to claim 1 , wherein the content of the component (A) is 0.01 to 1.5% by mass, the content of the component (B) is 0.01 to 1.5% by mass and the total content of the component (A) and the component (B) is 0.02 to 2.5% by mass.

4. The oral composition according to claim 1 , which further comprises a pH regulator selected from the group consisting of organic acids and inorganic acids but excluding phytic and pyrophosphoric acid, wherein the pH regulator is 5% or less relative to phytic acid in the mass ratio.

5. The oral composition according to claim 1 , which further comprises component (C), erythritol, wherein the mass ratio (C/(A+B)) between the component (C) and the sum of the components (A) and (B) is 5 to 1000.

6. The oral composition according to claim 5 , which further contains component (D), water, in an amount of 12 to 25% by mass, wherein the mass ratio (C/D) between the components (C) and (D) is 1 to 6 and the oral composition is a dentifrice.

7. The oral composition according to claim 5 , wherein the component (C), erythritol, content is 12 to 60% by mass and the oral composition is a dentifrice.

8. The oral composition according to claim 1 , wherein the oral composition does not comprise a fluoride or has a fluoride content of 300 ppm or less in terms of fluorine atoms.

9. The oral composition according to claim 1 , wherein the oral composition does not comprise a cationic antibacterial agent or has a cationic antibacterial agent content of less than 0.001% by mass.

10. The oral composition according to claim 1 , wherein the component (A) is phytic acid or an alkali metal salt thereof.

11. A method for imparting gloss to teeth, comprising applying an oral composition to teeth, wherein the composition comprises the following components (A) and (B):
(A) 0.01 to 3% by mass of phytic acid or a salt thereof, and
(B) 0.01 to 3% by mass of pyrophosphoric acid or a salt thereof, does not comprise a polyvalent cation or comprises a polyvalent cation selected from the group consisting of aluminum, calcium, magnesium, iron and zinc in an amount of less than 0.1-fold mol relative to phytic acid, has a pH of 5.5 to 6.5 when diluted with water to 30% by mass, has a mass ratio (B/A) between the component (A) and the component (B) of 0.2 to 3.0, and does not comprise a fluoride or has a fluoride content of less than 500 ppm in terms of fluorine atoms.

12. The method for imparting gloss to teeth according to claim 11 , wherein the content of the component (A) is 0.02 to 2% by mass, and the content of the component (B) is 0.02 to 2% by mass in the composition.

13. The method for imparting gloss to teeth according to claim 11 , wherein the content of the component (A) is 0.01 to 1.5% by mass, the content of the component (B) is 0.01 to 1.5% by mass and the total content of the component (A) and the component (B) is 0.02 to 2.5% by mass in the composition.

14. The method for imparting gloss to teeth according to claim 11 , which further comprises a pH regulator selected from the group consisting of organic acids and inorganic acids but excluding phytic acid and pyrophosphoric acid, wherein the pH regulator is 5% or less relative to phytic acid in the mass ratio.

15. The method for imparting gloss to teeth according to claim 11 , wherein the composition further comprises component (C), erythritol and the mass ratio (C/(A+B)) between the component (C) and the sum of the components (A) and (B) is 5 to 1000.

16. The method for imparting gloss to teeth according to claim 15 , wherein the composition further comprises component (D), water, in an amount of 12 to 25% by mass, wherein the mass ratio (C/D) between the components (C) and (D) is 1 to 6 and the oral composition is a dentifrice.

17. The method for imparting gloss to teeth according to claim 15 , wherein the composition is a dentifrice and the content of the component erythritol is 12 to 60% by mass.

18. The method for imparting gloss to teeth according to claim 11 , wherein the oral composition does not comprise a fluoride or has the fluoride content of 300 ppm or less in terms of fluorine atoms.

19. The method for imparting gloss to teeth according to claim 11 , wherein the oral composition does not comprise a cationic antibacterial agent or has a cationic antibacterial agent content of less than 0.001% by mass.

20. The method for imparting gloss to teeth according to claim 11 , wherein the component (A) is phytic acid or an alkali metal salt thereof.

Assignees

• Isobe Tsutomu
• Nakauchi Gen
• Eshita Yoshiyuki
• Kao Corp

Inventors

• Isobe Tsutomu
• Nakauchi Gen
• Eshita Yoshiyuki

Classifications

• A61K8/24

  Phosphorous; Compounds thereof · CPC title

• A61K8/55 Primary

  Phosphorus compounds · 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