Controlled release polyacrylic acid granules and a process for preparing the same
US6492488B1 · kind B1 · utility
1Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1999 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Jun 10, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for forming polyacrylic acid granules and granules prepared therefrom, wherein the granules are flowable, have comparable swelling characteristics and provide comparable tablet properties to powdered polyacrylic acid, have increased bulk density and contain minimal amounts of very small particles that can cause dusting and static adherence. The granules are used to prepare controlled-release tablets, especially for pharmaceutical purposes. The tablets prepared from granules obtained by the method of present invention have superior controlled release properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.