Haze-free cellulose ether capsules and process for making
US6294008A · kind A · utility
7Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L1/28
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed is a cellulose ether composition having a low molecular weight cellulose ether of a viscosity of about 200 centipoise or less in a two percent aqueous solution at 20.degree. C. The composition has a sodium chloride content of about 0.3 weight percent or less based upon the weight of the cellulose ether. The composition exhibits significantly reduced haze formation when in capsule form. Also disclosed is a process for making the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.