Absorbent foam materials for aqueous fluids made from high internal phase emulsions having very high water-to-oil ratios
US5741581A · kind A · utility
23Cited by
83References
14Claims
0Family size
Assignee
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Key dates
| Filing date | May 28, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | May 28, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/647
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Low density collapsed absorbent foams materials that, upon contact with aqueous fluids, in particular urine, can expand and absorb these fluids. These low density foams typically have an expanded thickness from about 6 to about 10 times the thickness of the foams in their collapsed state. These low density foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 55:1 to about 100:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.