Water-absorbing agent production process with surface crosslinking and ion blocking
US7420018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jul 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0866
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides: a water-absorbing agent which has excellent urine resistance; a water-absorbing agent which has not only excellent urine resistance, but also excellent absorption properties that are stable to any composition of urine and show little change with time; and production processes and uses for these water-absorbing agents. The present invention water-absorbing agent exhibits a specific or larger value of absorption capacity under a load in a process in which the absorption capacity under a load is measured in a new manner using a specific liquid to be absorbed, and the present invention provides an absorbent matter and an absorbent article which display a specific or larger value of new absorption index as is, for example, led from the absorption capacity under a load or from the resin concentration using the above water-absorbing agent. The present invention further provides a production process for a water-absorbing agent having the above specific parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.