Water-absorbent resin having improved water-absorbency and improved water-dispersibility and process for producing same
US4507438A · kind A · utility
149Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Dec 9, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-absorbent resins having improved water-absorbency, water-absorption rate and water-dispersibility can be produced by crosslinking a water-absorbent resin comprising a carboxylate as a constituent of the resin with a crosslinking agent having at least two functional groups in the presence of water in a proportion of 0.01 to 1.3 parts by weight per part by weight of the resin in an inert solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.