Anhydrous dentifrice
View Patent ↗Non-aqueous dentifrice compositions comprising an alkaline earth metal acetate salt such as strontium acetate and/or an alkaline earth metal nitrate salt such as strontium nitrate; a carboxyvinyl polymer and a humectant.
1. A non-aqueous dentifrice composition comprising a source of fluoride ions sufficient to provide 500 to 2000 ppm fluoride; 2% to 8% by weight of an alkaline earth metal acetate salt and/or an alkaline earth metal nitrate salt; 0.3% to 1.0% by weight a carboxyvinyl polymer; 35% to 75% by weight of a humectant selected from the group consisting of glycerine, sorbitol, propylene glycol and mixtures thereof; and an abrasive,
wherein the carboxyvinyl polymer is a copolymer of an acrylic acid crosslinked with polyallylsucrose or divinylglycol, and
wherein the composition comprises a viscosity at 25° C. of from about 90,000 cps to about 140,000 cps.
2. A non-aqueous dentifrice composition according to claim 1 wherein the alkaline earth metal acetate salt is strontium acetate, zinc acetate, calcium acetate or a combination of two or more thereof.
3. A non-aqueous dentifrice composition according to claim 2 wherein the alkaline earth metal acetate salt is strontium acetate.
4. A non-aqueous dentifrice composition according to claim 1 wherein the alkaline earth metal nitrate salt is strontium nitrate, zinc nitrate, calcium nitrate or a combination of two or more thereof.
5. A non-aqueous dentifrice composition according to claim 4 wherein the alkaline earth metal nitrate is strontium nitrate.
6. A non-aqueous dentifrice composition according to claim 1 wherein the humectant is glycerine, sorbitol or propylene glycol.
7. A non-aqueous dentifrice composition according to claim 1 wherein the humectant is glycerine.
8. A non-aqueous dentifrice composition according to claim 1 further comprising polyethylene glycol.