Super absorbent polymer and method for producing same
US11633720B2 · kind B2 · utility
0Cited by
6References
10Claims
0Family size
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Key dates
| Filing date | Mar 15, 2021 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Apr 13, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10−7 cm3·s/g) or more, and T-20 of 180 seconds or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.