Microcapsules for the controlled release of acetylsalicylic acid in the gastrointestinal environment
US5846566A · kind A · utility
14Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to controlled-release microcapsules of acetylsalicylic acid which comprise particles of acetylsalicylic acid with a size of between 100 and 1000 .mu.m, coated with a coating material consisting of a mixture of a cellulosic film-forming polymeric derivative, an antiadherent, a plasticizer, a lubricant and a vinylic film-forming polymeric derivative. The invention further relates to a process for the preparation of said microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.