Dentifrice compositions having optimized preservatives

Patent metadata

Field	Value
Publication number	US-9913783-B2
Application number	US-201514682141-A
Country	US
Kind code	B2
Filing date	Apr 9, 2015
Priority date	May 15, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A dentifrice composition comprising 45% to 75% water, by weight of the composition; 25% to 50% of a calcium-containing abrasive by weight of the composition; greater than 0.10% to 0.30% benzyl alcohol, by weight of the composition; 0.01% to 0.11% of a paraben by weight of the composition; and an alkaline pH.

First claim

What is claimed is:

1. A dentifrice composition comprising:
(a) 55% to 65% water, by weight of the composition;
(b) 25% to 40% of a calcium-containing abrasive by weight of the composition;
(c) greater than 0.15% to 0.30% benzyl alcohol, by weight of the composition;
(d) 0.03% to 0.11% of a paraben, by weight of the composition; and
(e) an alkaline pH;
(f) less than 4% of a humectant selected from the group consisting of glycerin, sorbitol, xylitol, butylene glycol, propylene glycol, and combinations thereof, by weight of the composition;
(g) optionally from 0.1% to 15% polyethylene glycol, by weight of the composition;
wherein the composition is a dentifrice.

2. The composition of claim 1 , wherein the alkaline pH is greater than 8.0.

3. The composition of claim 1 wherein the paraben is selected from methyl paraben, propyl paraben, or combinations thereof.

4. The composition of claim 3 , wherein the paraben comprises a combination of methyl paraben and propyl paraben, wherein there is a greater weight ratio of methyl paraben to propyl paraben.

5. The composition of claim 1 , further comprising 0.0025% to 2% of a fluoride ion source by weight of the composition.

6. The composition of claim 1 further comprising 0.1% to 12% of an anionic surfactant by weight of the composition.

7. The composition of claim 1 , further comprising 0.01% to 2% of menthol by weight of the composition.

8. The composition of claim 1 , wherein the alkaline pH is from 9 to 12.

9. The composition of claim 1 , further comprising:
(a) 0.01% to less than 1.4%, carrageenan, by weight of the composition; and
(b) greater than 0.4% to 2% of a carboxymethyl cellulose, by weight of the composition.

10. The composition of claim 9 , further comprising 0.5% to 5% of a thickening silica, by weight of the composition.

11. A method of treating tooth enamel comprising the step of brushing teeth with an oral care composition of claim 1 .

12. The composition of claim 1 , wherein the abrasive comprises calcium carbonate.

13. The composition of claim 4 wherein the composition comprises from 0.01% to 0.04% propyl paraben and 0.02% to 0.07% methyl paraben.

14. The composition of claim 5 wherein the fluoride ion source is selected from the group consisting of stannous fluoride, sodium fluoride, potassium fluoride, amine fluoride, sodium monofluorophosphate, zinc fluoride, and combinations thereof.

15. A dentifrice composition comprising:
(a) 55% to 65% water, by weight of the composition;
(b) 25% to 40% of a calcium-containing abrasive by weight of the composition;
(c) a preservative comprising 0.15% to 0.30% benzyl alcohol, from 0.01% to 0.04% propyl paraben and 0.02% to 0.07% methyl paraben, by weight of the composition; and
(d) a pH from 8 to 13;
wherein the composition is a dentifrice.

16. The dentifrice composition of claim 15 wherein the ratio of weight ratio of methyl paraben to propyl paraben is from 5:3 to 15:3.

17. The dentifrice composition of claim 15 wherein the composition comprises less than 4% of a humectant selected from the group consisting of glycerin, sorbitol, xylitol, butylene glycol, propylene glycol, and combinations thereof.

18. The dentifrice of claim 1 wherein the composition comprises greater than 0.18% to 0.30% benzyl alcohol, by weight of the composition.

19. The dentifrice of claim 15 wherein the composition comprises greater than 0.18% to 0.30% benzyl alcohol, by weight of the composition.

20. The dentifrice of claim 19 wherein the composition comprises 0.01% to 0.03% propyl paraben and 0.03% to 0.05% methyl paraben.

Assignees

• Procter & Gamble

Inventors

• Strand Ross
• Wei Wei
• Yang Hongmei

Classifications

• A61Q11/00

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

• A61K8/19 Primary

  containing inorganic ingredients · CPC title

• A61K8/25

  Silicon; Compounds thereof · CPC title

• A61K2800/28

  Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants · CPC title

• A61K2800/524

  Preservatives · CPC title