Surface-treated superabsorbent polymer particles
US6391451B1 · kind B1 · utility
31Cited by
23References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Surface-treated superabsorbent polymer particles obtained by mixing 100 parts by weight of superabsorbent polymer particles with 0.001 to 10 parts by weight of a hydroxyalkylamide, and heating the surface-treated superabsorbent polymer particles to crosslink molecular chains existing at least in the vicinity of the surfaces of the superabsorbent polymer particles is disclosed. Surface crosslinking the superabsorbent polymer particles with a hydroxyalkylamide substantially increases both the rate of liquid absorption and the quantity of liquid absorbed and retained by the superabsorbent particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.