Porous absorbent materials having modified surface characteristics and methods for making the same
US5985432A · kind A · utility
24Cited by
74References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jan 6, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A porous absorbent material that comprises a water-insoluble, water-swellable absorbent polymer. The absorbent material comprises a polyether and/or a polycation bonded to the absorbent polymer whereby the contact angle of blood on a surface of the absorbent material attains from about 0 degree to about 40 degree. Because of the improved wettability with liquids as well as the porous structure, the absorbent material can provide higher absorbent characteristics with liquids, in particular with blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.