Capsule comprising low-substituted cellulose ether and method for preparing the same
US8029821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Jul 29, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/4816
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A capsule with good disintegration properties that can quickly display its content's efficacy as well as a method for preparing the same are provided. More specifically, provided is a capsule comprising a shell comprising low-substituted cellulose ether. Also, provided is a method for preparing a hard capsule comprising the low-substituted cellulose ether comprising a step of covering a pin for forming the hard capsule with the low-substituted cellulose ether by immersing the pin in an alkaline solution of the low-substituted cellulose ether; a step of forming the low-substituted cellulose on a surface of the pin into a gel by further immersing the covered pin in an aqueous acid solution; a step of washing by immersing the pin whose surface has been covered with the gel in water; and a step of drying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.