Absorbent products containing hydrogels with ability to swell against pressure
US5147343A · kind A · utility
394Cited by
18References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/8491
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An absorbent composite of the type comprising a porous matrix of fibers and a superabsorbent material dispersed among the interfiber spaces (pores) wherein the superabsorbent material exhibits the ability to absorb greater than about 24 milliliters of a saline solution per gram of superabsorbent material under an applied restraining force of at least about 21,000 dynes/square centimeter provided that, when in the form of discrete particles, at least about 50% of said superabsorbent material has a size greater than the median pore size of the matrix when wet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.