Enteric-soluble preparations
US4661162A · kind A · utility
29Cited by
7References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1984 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Apr 13, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/286
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An enteric-soluble composition for coating drugs and the like comprises a conventional enteric-soluble polymer in admixture with a polyanionic polymer which is soluble at low pH values. By altering proportions and types of both polymer, it is possible to alter the pH value at which the composition will disintegrate to release the drug or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.