Inhibition of corrosion of aluminium tubes by toothpastes
US4328205A · kind A · utility
24Cited by
12References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1981 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Feb 2, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/526
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The tendency of gel toothpastes comprising silica thickeners, such as silica aerogel or precipitated silica, and a fluoride source, such as sodium monofluorophosphate or fluoride, to corrode aluminium tubes can be reduced by incorporating at least 0.01% by weight sodium or potassium hydroxide or carbonate, so that the pH of the toothpaste is at least 8.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.