Quaternary nitrogen containing polyvinyl alcohol polymers for use in skin conditioning, cosmetic and pharmaceutical formulations
US4690817A · kind A · utility
17Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Jun 21, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Polyvinyl alcohol polymers having pendant cationic quaternary nitrogen containing groups provide for a film forming moisture barrier in skin conditioning lotions, ointments, cosmetic conditioning treatments and pharmaceutical formulations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.