High gloss cellulose tablet coating
US4931286A · kind A · utility
14Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Apr 19, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2866
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
High gloss pharmaceutical tablets have an outer coating of sodium carboxymethylcellulose and polyethylene glycol as 0.1 to 5.0% by weight of the tablet. The sodium carboxymethylcellulose has a D.S. between 0.2 and 1.4 and a D.P. between 100 and 4000. Spraying the coating from a water solution eliminates the need for solvent recovery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.