Visually clear lake colored dentifrice
US4444746A · kind A · utility
23Cited by
32References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Nov 24, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/262
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
There is disclosed a visually clear colored dentifrice comprising a liquid vehicle having a refractive index between about 1.36 and 1.47, up to about 10% by weight of a gelling agent, about 5-50% by weight of a polishing material having a refractive index similar to that of that of the said liquid vehicle, such that the said dentifrice is visually clear in appearance when the said polishing material is dispersed in the said liquid vehicle and about 0.004-1% by weight of a lake pigment insoluble in water and in the said liquid vehicle, the said lake pigment containing an inherently colorless substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.