Absorbent polymer compositions having high sorption capacities under an applied pressure
US6232520A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530744
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed in the present application are absorbent polymer compositions useful in the absorption of body fluids such as urine, menses and the like. In particular, the invention relates to mixed-bed ion-exchange absorbent polymer compositions having excellent absorbency performance properties in terms of absorbent capacity under a confining pressure of 0.7 psi and/or 1.4 psi. Certain mixed-bed ion-exchange absorbent polymer compositions of the present invention have excellent absorbency properties not only for a synthetic urine with a composition and ionic strength that is typical of young infants but also for a high ionic strength synthetic urine that has a composition and ionic strength that is typical of the urine of older infants and toddlers. The invention also relates to absorbent members comprising the mixed-bed ion-exchange absorbent polymer compositions, and absorbent articles comprising the absorbent members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.