Color-stable superabsorbent polymer composition
US6359049B1 · kind B1 · utility
38Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/6035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A color-stable superabsorbent polymer composition having long-term color stability, and methods of manufacturing the composition, are disclosed. The superabsorbent polymer composition contains an inorganic reducing agent and an optional metal salt, and resists color degradation during periods of extended storage, even at an elevated temperature and humidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.