Claims
- 1. A dentifrice in the form of anqueous paste or liquid dispersion, comprising(a) 10% to 30% by weight of a combination of one or more silica polishing agents and aluminum oxide in a ratio by weight of 10:0.2 to 10:2, said aluminum oxide comprising at least 10% by weight of γ-aluminum oxide, based on the total weight of said aluminum oxide; (b) 20% to 50% by weight of a humectant selected from the group consisting of sorbitol, glycerol, 1,2-propylene glycol, polyethylene glycols, and mixtures thereof; and (c) 2% to 12% by weight of a condensed phosphate selected from the group consisting of tripolyphosphate, pyrophosphate, trimetaphosphate, and mixtures thereof, said condensed phosphates being in the form of an alkali metal or ammonium salt, wherein the percentages of the combination of the silica polishing agent and aluminum oxide, the humectant and the condensed phosphate are based on the total weight of the composition.
- 2. The dentifrice of claim 1, wherein the aluminum oxide comprises lightly calcined alumina containing 10% to 50% by weight of γ-aluminum oxide.
- 3. The dentifrice of claim 1, comprising 25% to 40% by weight of sorbitol.
- 4. The dentifrice of claim 2, comprising 25% to 40% by weight of sorbitol.
- 5. The dentifrice of claim 1, comprising 5% to 10% by weight of sodium or potassium tripolyphosphate.
- 6. The dentifrice of claim 2, comprising 5% to 10% by weight of sodium or potassium tripolyphosphate.
- 7. The dentifrice of claim 4, comprising 5% to 10% by weight of sodium or potassium tripolyphosphate.
- 8. The dentifrice of claim 1, wherein the silica polishing agents comprise precipitated silica with a particle size of 5 to 20 μm and a specific surface of 100 to 300 g/l.
- 9. The dentifrice of claim 7, wherein the silica polishing agents comprise precipitated silica with a particle size of 5 to 20 μm and a specific surface of 100 to 300 g/l.
- 10. The dentifrice of claim 1, comprising 0.1% to 0.5% by weight of fluorine.
- 11. The dentifrice of claim 2, comprising 0.1% to 0.5% by weight of fluorine.
- 12. The dentifrice of claim 4, comprising 0.1% to 0.5% by weight of fluorine.
- 13. The dentifrice of claim 9, comprising a fluoride or monofluorophosphates such that the dentifrice comprises 0.1% to 0.5% by weight of fluorine.
Priority Claims (1)
Number |
Date |
Country |
Kind |
197 40 453 |
Sep 1997 |
DE |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national stage application under 35 U.S.C. §371 of international application PCT/EP98/05632 filed on Sep. 5, 1998, the international application not being published in English.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP98/05632 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/13851 |
3/25/1999 |
WO |
A |
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