Superabsorbent polymers having radiation activatable surface cross-linkers and method of making them
US7449219B2 · kind B2 · utility
4Cited by
32References
9Claims
0Family size
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Key dates
| Filing date | Dec 8, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Superabsorbent polymer particles with improved surface cross-linking for use in absorbent articles and a process for making the superabsorbent polymer particles. The superabsorbent polymer particles include a water-absorbing resin and the reaction product of a radiation activatable surface cross-linker. The reaction product of the radiation activatable surface cross-linker is present at surfaces of the superabsorbent polymer particles. The radiation activatable surface cross-linker includes at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.