Coatable ion exchange resins
US4859461A · kind A · utility
37Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K47/585
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 20% by weight of a compound selected from hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropyl sorbitol, sorbitol, and polyvinylpyrrolidone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.