Dentifrice composition
View Patent ↗The present invention relates to a dentifrice composition comprising a stannous salt e.g., stannous fluoride and a water-soluble alkali metal tripolyphosphate e.g., sodium tripolyphosphate and a non-aqueous carrier and wherein the composition is substantially free of any water and does not comprise a source of zinc ions or an aqueous buffer system.
1. A single-phase dentifrice composition comprising
about 0.45% by weight stannous fluoride;
about 5% by weight sodium tripolyphosphate as an anti-stain agent;
and a non-aqueous carrier, wherein the said non-aqueous carrier comprises about 55% by weight of glycerin, about 20% weight of polyethylene glycol, about 14% by weight of an abrasive and thickening silica, about 0.8% by weight of a carbomer polymer, about 1.1% by weight of sodium lauryl sulphate, about 0.4% by weight of cocoamidopropyl betaine, and one or more flavouring agents and opacifiers;
and wherein the composition is free of any water and does not comprise a source of zinc ions or an aqueous buffer system.
2. The dentifrice composition according to claim 1 wherein the composition exhibits no less than 75% availability of stannous ion and tripolyphosphate after storage at 40° C. and a relative humidity of 75% for 12 months.