Aqueous film-forming compositions for controlling the release of active agents
US5358990A · kind A · utility
9Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Feb 11, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2853
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Aqueous coating compositions for forming elastomeric films around active cores (e.g., drugs) comprising a dispersion of pre-crosslinked polyorganosiloxane latex particles, colloidal silica particles, and a water-dispersible organic material (e.g., polyethylene glycol) are disclosed and claimed. The elastomeric films formed by the coating compositions are used to control the rate of release of an active agent in the cores into an aqueous environment. Methods of formulating the coating compositions and active cores coated with the coating compositions are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.