Clear dentifrice gels

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 sulph...

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Bibliographic Details
Main Author DAY TREVOR NEIL
Format Patent
LanguageEnglish
Published 12.11.2002
Edition7
Subjects
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS
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Summary: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.
Bibliography:Application Number: US20000719269