Aqueous enteric coating composition and low gastric permeability enteric coating
US6139875A · kind A · utility
64Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2886
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein is an aqueous enteric coating composition comprised of a solution of a water-soluble salt of an enteric coating polymer, with a hydrophobic compound containing 12 to 20 carbon atoms and a water-insoluble solid flake material dispersed in the aqueous solution. The enteric coating formed from the present composition has good mechanical strength and shows superior resistance to attack by atmospheric moisture and simulated gastric fluid, while being readily broken down under the alkaline conditions which exist in the intestine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.