Superabsorbent polymers having delayed water absorption characteristics
US6514615B1 · kind B1 · utility
34Cited by
68References
5Claims
0Family size
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Key dates
| Filing date | Jun 26, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jul 22, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A superabsorbent polymer comprising a delayed absorption superabsorbent polymer having a free water absorbency property of absorbing less than about 3 grams of aqueous saline per gram of superabsorbent polymer in about 6 seconds, for a full particle size distribution of superabsorbent polymer ranging from about 40 micrometers to about 890 micrometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.