Absorbent resin surface-modified with cationic polymer compound
US8623783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 8, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an absorbent resin surface-modified with a cationic polymer compound. According to the present invention, the use of a cationic polymer compound can provide a simple and economical way to prepare an absorbent resin surface-modified with a cationic polymer compound with enhanced absorption rate and absorbency, overcoming the problem with the conventional absorbent resin having low absorption rate and poor absorbency. In accordance with one embodiment of the present invention, there is provided an absorbent resin comprising a cross-linked polymer which includes a base resin prepared in the form of powder by polymerizing a monomer based on acrylic acid having an acidic group and neutralized by 40 to 95 mol % and then forming an internal cross-linking with a first cross-linking agent, where the surface of the base resin is cross-linked with a second cross-linking agent, and the cross-linked polymer is surface-modified with a cationic polymer compound comprising a polyacrylamide-based polymer or its salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.