Claims
- 1. A toothpaste containing at least about 25% by weight dispersed particles of sodium bicarbonate and a polishing agent system comprising titanium dioxide powder having a particle size less than about two microns, the amount of titanium dioxide particles being more than about 0.1% of the weight of the toothpaste, said particles dispersed in a vehicle containing sufficient liquids, said vehicle consisting essentially of about 5 to 35% water and sufficient viscous water miscible polyol humectant or mixtures thereof, and a sufficient amount of gelling or thickening agent to impart to the toothpaste the pasty consistency, body and the non-tacky nature which is characteristic of conventional dental creams or toothpastes, said sodium bicarbonate being primarily in an undissolved solid state, said dental cream having a granular textured appearance comprising a substantially dispersed non-crystalline appearing granulate of macroscopic crystalline bicarbonate granules in an otherwise smooth continuous matrix.
- 2. A toothpaste as in claim 1 containing about 25 to about 57% sodium bicarbonate.
- 3. A toothpaste as in claim 1 in which the sodium bicarbonate particles are principally about 150 microns in diameter.
- 4. A toothpaste as in claim 1 in which said particles are dispersed in a thickened water-glycerol vehicle.
- 5. A toothpaste as defined in claim 1 wherein said bicarbonate has a particle size largely below about 0.4 mm in diameter.
- 6. A toothpaste as defined in claim 1 wherein a major proportion by weight of said bicarbonate has a particle size above about 0.01 mm in diameter.
- 7. A toothpaste as defined in claim 1 wherein said titanium dioxide is included in amounts of about 0.2 to about 0.6 percent by weight of the toothpaste.
- 8. A toothpaste as defined in claim 1 wherein the particle size of said titanium dioxide is less than about 1 micron.
- 9. A toothpaste as defined in claim 1 additionally containing less than about 25% of a further abrasive ingredient.
- 10. A toothpaste as defined in claim 1 additionally containing less than about 25% calcium carbonate.
- 11. A toothpaste as defined in claim 1 wherein said titanium dioxide is a grit-free anatese powder at least 99.0% of which passes through a No. 325 U.S. standard sieve.
- 12. A toothpaste as defined in claim 1 wherein said particles of sodium bicarbonate are generally monoclinic crystals some of which have projecting spike-like portions of generally rhombohedral shape with may reentraut angles.
- 13. A toothpaste as in claim 10 wherein said abrasive is selected from the group consisting of silica, alumina, silicates and carbonates non-reactive with the bicarbonate.
- 14. A toothpaste as in claim 1 wherein the sodium bicarbonate - water ratio is about 3:1 to 6:1.
- 15. A toothpaste as defined in claim 1 further including at least about 0-5% of a suitable flavoring oil.
Parent Case Info
This application is a continuation in part of application Ser. No. 295,073, filed on Oct. 4, 1972 now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,124,756 |
Jul 1956 |
FR |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
295073 |
Oct 1972 |
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