Oral care compositions comprising pearlescent pigments
US9301907B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2015 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Apr 27, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/92
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides an oral care composition suitable for delivering a temporary whitening effect to the surface of teeth, the composition comprising: a continuous phase comprising water or polyhydric alcohol or a mixture thereof; a tooth surface whitening agent which is dispersed in the continuous phase, and a deposition aid for the tooth surface whitening agent; characterized in that the tooth surface whitening agent is a pearlescent pigment in an amount of at least 0.1% by weight based on the total weight of the composition, the pearlescent pigment being formed by coating one or more metal oxide layers onto particles of an inorganic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.