Preparation method of superabsorbent polymer and superabsorbent polymer prepared thereby
US10208171B2 · kind B2 · utility
1Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | May 21, 2018 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | May 21, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2471/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided are a preparation method of a superabsorbent polymer, and a superabsorbent polymer prepared thereby. The preparation method of the superabsorbent polymer according to the present disclosure enables preparation of the superabsorbent polymer which is excellent in absorption properties such as centrifuge retention capacity and absorbency under pressure, and also has improved permeability. In addition, the preparation method exhibits excellent operability during the preparation (in particular, surface crosslinking of the polymer) and excellent productivity due to low production of coarse particles and fine particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.