Color changing compositions

Patent metadata

Field	Value
Publication number	US-9522111-B2
Application number	US-201114365082-A
Country	US
Kind code	B2
Filing date	Dec 16, 2011
Priority date	Dec 16, 2011
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

Described herein are oral care compositions comprising an antibacterial agent and a dissolvable film comprising a pigment which provide a color change signal after a sufficient period of brushing, wherein the dentifrice base has water activity less than 0.78 and comprises anionic polymer in free or salt form 10-25% by weight of the dentifrice base, and anionic surfactant less than 3% by weight; together with methods of making and using the compositions.

First claim

The invention claimed is:

1. An oral care composition comprising a dentifrice base; an antibacterial agent; and a dissolvable film comprising a pigment which provides a color change signal after a sufficient period of brushing, wherein the dentifrice base has a water activity less than 0.78 and comprises an anionic polymer in free or salt form in the amount of 10-25% by weight of the dentifrice base, and an anionic surfactant at an amount of less than 3% by weight;
wherein the dissolvable film comprises, by dry weight of the film, 20-60% cellulose ethers selected from methyl cellulose, hydroxypropylmethyl cellulose, and mixtures thereof; 10-30% propylene glycol; 1-5% polysorbate 80; and 15-55% pigment.

2. The composition according to claim 1 wherein the anionic polymer is methyl vinyl ether/maleic anhydride co-polymer having a molecular weight (M.W.) of about 30,000 to about 1,000,000, optionally partially or fully in the form of an orally acceptable base addition salt.

3. The composition according to claim 1 further comprising an effective amount of fluoride.

4. The composition according to claim 1 wherein a 1″×1″ swatch of the film placed in water will not disintegrate and release active in water at room temperature in less than 5 minutes in the absence of agitation.

5. The composition according to claim 1 wherein the dissolvable film further comprises a starch.

6. The composition according to claim 1 wherein the dissolvable film is substantially dissolved after a period of greater than 30 seconds and less than 180 seconds of brushing, scrubbing or agitation in the presence of water.

7. The composition according to claim 1 further comprising a humectant selected from: glycerin, sorbitol, polyethylene glycol, xylitol, and a combination of two or more thereof.

8. The composition according to claim 1 further comprising an abrasive.

9. A method of cleaning the teeth comprising brushing with a composition according to claim 1 , wherein brushing is continued until the film disintegrates and the pigment provides a color signal to the user of adequate brushing.

Assignees

• Szewczyk Gregory
• Patel Neeta Atul
• Jogun Suzanne
• Prencipe Michael
• Colgate Palmolive Co

Inventors

• Szewczyk Gregory
• Patel Neeta Atul
• Jogun Suzanne
• Prencipe Michael

Classifications

• A61K2800/5424

  anionic · CPC title

• A61K8/345

  containing more than one hydroxy group · CPC title

• A61Q17/005

  Antimicrobial preparations · CPC title

• A61K8/4973

  with oxygen as the only hetero atom · 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