Binding method of water absorbent resin
US8598254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2008 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Aqueous liquid and moisture vapor are added to water absorbent resin powder so that particles of the water absorbent resin powder are bound. Supplying the aqueous liquid and moisture vapor to the water absorbent resin powder reduces the amount of particles that remain unbound (ungranulated) and increases the concentration of the water absorbent resin bound particles to provide improved drying efficiency and to obtain particulate water absorbent resin having excellent properties even when the bound particles are highly concentrated. The present invention provides (i) a method for binding water absorbent resin and (ii) a method for producing particulate water absorbent resin including the step of binding particles of water absorbent resin powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.