Stable dentifrice containing neutral siliceous polishing agent
First Claim
1. A stable dentifrice contained in an unlined aluminium tube consisting essentially of an aqueous dentally acceptable oral vehicle, at least 27.5% by weight of the dentifrice comprising water and dispersed in the said oral vehicle from 10 to 40% by weight of the dentifrice of a neutral sodium aluminosilicate polishing agent containing about 4-5% total aluminium as Al and having a stirred slurry pH in the range from 6.5 to 7.5, and a stabilizing amount of monofluorophosphate ion, the dentifrice having a stirred slurry pH in the range from 5.5 to 8, said monofluorophosphate ion stabilizing said dentifrice against gas generating reaction between the components of said dentifrice when said dentifice is in contact with the surface of said unlined aluminium tube.
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Accused Products
Abstract
There is disclosed a dentifrice formulation which is stable in the sense of not producing gassing as evidenced by visually discernable distention over a period of 168 days at 43° C. in an unlined aluminium tube.
The formulation comprises an aqueous dentally acceptable oral vehicle at least 27.5% by weight of the dentifrice comprising water and dispersed in the said oral vehicle from 10 to 40% by weight of the dentifrice of a neutral siliceous polishing agent having a stirred slurry pH (as herein defined) in the range from 6.5 to 7.5, and a stabilizing amount of monofluorophosphate ion, the dentifrice having a stirred slurry pH in the range from 5.5 to 8.
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Citations
12 Claims
- 1. A stable dentifrice contained in an unlined aluminium tube consisting essentially of an aqueous dentally acceptable oral vehicle, at least 27.5% by weight of the dentifrice comprising water and dispersed in the said oral vehicle from 10 to 40% by weight of the dentifrice of a neutral sodium aluminosilicate polishing agent containing about 4-5% total aluminium as Al and having a stirred slurry pH in the range from 6.5 to 7.5, and a stabilizing amount of monofluorophosphate ion, the dentifrice having a stirred slurry pH in the range from 5.5 to 8, said monofluorophosphate ion stabilizing said dentifrice against gas generating reaction between the components of said dentifrice when said dentifice is in contact with the surface of said unlined aluminium tube.
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12. A dentifrice contained in an unlined aluminium tube consisting essentially of 35% to 50% by weight water, 0% to 30% by weight of glycerine, 15 to 25% of sodium aluminosilicate polishing agent containing about 4-5% total aluminium as Al and having a stirred slurry pH in the range 6.5 to 7.5, at least 0.5% by weight of alkali metal monofluorophosphate, calcined alumina in an amount in the range 0% to 15% by weight and one or more organic surface active agents in an amount not in excess of 5% by weight, the dentifrice having a stirred slurry pH in the range 5.5 to 8, said monofluorophosphate ion stabilizing said dentifrice against gas generating reaction between the components of said dentifrice when said dentifrice is in contact with the surface of said unlined aluminium tube.
Specification