Peroxide gel dentifrice
US5059417A · kind A · utility
89Cited by
18References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jun 26, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q11/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An oral composition is provided in the form of a clear gel dentrifice containing hydrogen peroxide and a polyoxyethylene-poloxypropylene copolymer. The gel is stabilized against loss of viscosity at low temperatures by the presence of glycerol in amounts more than 30% but less than 50%. The weight ratio of glycerol to copolymer must range from 1:0.7 to 1:0.4. Advantageously for peroxide stability, the composition has a pH of less than 3. Phosphoric acid is beneficial as the acidifying agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.