pH sensitive polymer and process for preparation thereof
US7531612B2 · kind B2 · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5026
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates a novel pH sensitive polymer which exhibits pH dependant swelling/dissolution behavior. The composition is useful for taste masking of bitter drugs and also for the gastric delivery of the drugs. The said polymer comprises a hydrophobic monomer polymerized along with a basic monomer or a hydrophobic monomer polymerized along with a basic monomer and a hydrophilic monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.