Surface treated absorbent polymers
US4824901A · kind A · utility
100Cited by
39References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" required for most applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.