Clear dentifrice gels
The present invention relates to clear dentifrice gels comprising a tetrasodium pyrophosphate anticalculus agent. According to the present invention there is provided a visually clear, dentrifice gel comprising; a) sufficient tetrasodium pyrophosphate to provide from 0.2% to 5% pyrophosphate anion;...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
12.11.2002
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| Online Access | Get full text |
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| Summary: | The present invention relates to clear dentifrice gels comprising a tetrasodium pyrophosphate anticalculus agent.
According to the present invention there is provided a visually clear, dentrifice gel comprising; a) sufficient tetrasodium pyrophosphate to provide from 0.2% to 5% pyrophosphate anion; b) a silica dental abrasive having a refractive index of from 1.445 to 1.47; c) from 0.7% to 3% sodium alkyl sulphate; and d) an aqueous liquid carrier. The gel has excellent clarity, high anticalculus efficiency and good foaming. According to a further aspect of the invention there is provided a process for making a clear dentifrice gel comprising the step of adding anhydrous tetrasodium pyrophosphate to an aqueous carrier, the gel comprising: a) a silica dental abrasive having a refractive index of from 1.445 to 1.47; and b) an aqueous liquid carrier comprising less than 27% total water. The use of anhydrous tetrasodium pyrophosphate allows greater formulation flexibility at the processing stage by freeing up water for the dissolution and/or hydration of other dentrifice components. |
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