PH modulated films for delivery of actives
US7910641B2 · kind B2 · utility
22Cited by
126References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Aug 22, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to pH modulated films and methods of their preparation. The film compositions include at least one component having a non-neutral pH when combined with water; and a pH modulated polymer system selected to reduce or prevent synerisis when combined with the non-neutral component in combination with aqueous media. The films demonstrate a non-self-aggregating uniform heterogeneity. Desirably, the films disintegrate in water and may be formed by a controlled drying process, extrusion process, or other process that maintains the required uniformity of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.