Aqueous composition for enteric hard capsule, method of preparing enteric hard capsule, and enteric hard capsule prepared using the method
US9044406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2009 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Oct 18, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/38
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An aqueous composition for an enteric hard capsule, a method of preparing an enteric hard capsule, and an enteric hard capsule prepared using the method. The aqueous composition for an enteric hard capsule includes an enteric base material, a capsule forming aid, and a neutralizing agent. The method of preparing an enteric hard capsule includes: preparing an aqueous composition by dissolving an enteric base material, a capsule forming aid, and a neutralizing agent in water; preheating the aqueous composition to a temperature that is less than the gelation temperature for the aqueous composition; immersing a mold pin heated to a temperature that is greater than the gelation temperature for the aqueous composition into the aqueous composition; taking the mold pin out of the aqueous composition to obtain a film formed on the mold pin; and maintaining the film at a temperature that is equal to or greater than the gelation temperature for the aqueous composition for a predetermined period of time to fix the film on the mold pin and drying the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.