Dentrifices
US4305928A · kind A · utility
34Cited by
23References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Dec 9, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/43
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An additive, 0.05% to 5% of phytic acid, a chelator, unlike other chelators such as tartaric acid or ethylene diamine tetra acetic acid, prevents or reduces color fading of from 0.0007% to 0.5% of a water-soluble non-toxic red or yellow monoazo or blue triarylmethane dye-colored visually clear dentrifice containing both alkali metal monofluorophosphate in an amount to provide from 0.01% to 1% of fluorine and from 5% to 50% of a selected siliceous polishing agent having an index of refraction between 1.44 and 1.47, in a liquid vehicle having an index of refraction matching that of said siliceous polishing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.