Delayed release film coatings containing calcium silicate and substrates coated therewith
US9233074B2 · kind B2 · utility
1Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Feb 25, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2886
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention includes pH dependent, dry film coating compositions containing calcium silicate for use on orally-ingestible substrates such as tablets and the like. The film coating compositions can be applied as an aqueous suspension either directly to a substrate or after the substrate has been coated with a subcoat. In preferred aspects, the polymer is either an enteric or reverse-enteric polymer. Methods of preparing the dry film coatings, methods of preparing corresponding aqueous suspensions, methods of applying the coatings to substrates and the coated substrates themselves are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.