Water-absorbing composition and production process for water-absorbing agent
US6372852B2 · kind B2 · utility
29Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F265/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention has an object to provide a process for producing a water-absorbing agent which is excellent in the absorption capacities under no load and under a load with good balance and can display excellent absorption properties even if the weight percentage of a water-absorbent resin (resin concentration) is high when the water-absorbent resin is used for materials such as sanitary materials. The above object can be achieved by adding a vinyl compound or both the vinyl compound and a polyhydric alcohol to a water-absorbent resin and heating the resultant mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.