Method for surface-treatment of water absorbent resin
US7879923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2005 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Oct 24, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is to provide a method for surface-treatment of a water absorbent resin excelling in water absorption properties. This invention relates to a method for the surface-treatment of a water absorbent resin, which comprises: a) mixing 100 parts by weight of a water absorbent resin, 0.01-20 parts by weight of at least one radical polymerization initiator selected from the group consisting of persulfates, hydrogen peroxide, and azo compounds, and a radically polymerizing compound and b) irradiating the resultant mixture with active energy rays. The treatment particularly exalts the absorption ratio against pressure and the saline flow conductivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.