Coacervated highly absorptive polymers
US5208038A · kind A · utility
22Cited by
23References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1989 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Dec 8, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/56
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition which is includes discrete particles of a highly cross-linked macroporous hydrophobic polymer. The particles are of a first predetermined average diameter, and the polymer particles have entrapped therein and dispersed uniformly throughout an active ingredient. The composition also includes a coacervating agent mixed with the polymer particles in an amount sufficient to cause the polymer particles to collect forming dense clusters of coacervated particles of a second predetermined average diameter, the second predetermined average diameter being substantially in excess of the first predetermined average diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.