Process for obtaining polymers which are superabsorbent for water and aqueous fluids in the form of particle aggregates
US5807916A · kind A · utility
7Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The process consists in the agglomeration of fine particles of superabsorbent polymer, carried out by introducing an aqueous solution of monomer into a slurry of aqueous polymer dispersed within a hydrocarbon liquid, this introduction being performed directly at the temperature and in conditions of polymerization of the monomer. A superabsorbent product is thus obtained in a very good yield, in the form of aggregates of particles such that the fraction passing through a 100-micron screen is less than 1%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.