Method for inhibiting the decrease in viscosity of gel ointment base and ointment
US4983386A · kind A · utility
4Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | May 1, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/32
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A gel ointment base having stable viscosity and resistant to a light which comprises an aqueous carboxyvinyl polymer solution and an amino acid in an amount effective for increasing the viscosity of the aqueous carboxyvinyl polymer solution, and a gel ointment comprises an active medical substance and the gel ointment base as set forth above, which has stable viscosity and resistant to a light at a pH range which does not give any irritation to viscous membranes and skins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.