Crosslinked polysaccharide, obtained by crosslinking with substituted polyethylene glycol, as superabsorbent
US7365190B2 · kind B2 · utility
15Cited by
17References
23Claims
0Family size
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Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Jan 5, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08B15/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New crosslinked polysaccharides useful as absorbents or superabsorbents alone or in a mixture are obtained by reacting polysaccharides (preferably containing carboxylates groups) with at least one crosslinker selected in the group constituted by activated polyethylene glycols such as for example halogenated (Cl, Br, I), mesylated, tosylated, or triflated activated polyethylene glycols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.