Absorbent polymers having a reduced caking tendency
US5728742A · kind A · utility
51Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The subject invention provides water-swellable polymer compositions having reduced caking tendencies. Such polymer compositions can be produced by employing quaternary ammonium salts. In addition to having reduced caking tendencies such polymers have reduced dust and substantially maintain or increase the surface tension of an aqueous fluid in equilibrium with the polymer and air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.