Methods for producing superabsorbent polymers for use in agricultural applications
US7591974B2 · kind B2 · utility
9Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jan 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F251/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods and systems for producing superabsorbent polymer particles for use in agricultural applications are disclosed. A monomer is graft polymerized onto a starch to form a starch graft copolymer. The moisture content of the starch graft copolymer is reduced through the use of an extruder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.