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US 8,247,488 B2Granted
Modified polyacrylamide hydrogel
AssigneeRipi
InventorsJamal Aalaie Haradasht, Ebrahim Vasheghani Farahani, Ali Rahmatpour
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Abstract
The invention relates to a salt resistant water absorbing compound including a polymeric phase that includes polyacrylamide and at least one of di or poly saccharide, wherein the polyacrylamide is cross-linked in the presence of at least one of di or poly saccharide by a cross-linking agent including multivalent cations, complexes thereof, organic cross-linking agents, or any combination thereof.
Claims19
A salt resistant water absorbing compound comprising:
- a polymeric phase comprising a polyacrylamide and at least one poly saccharide comprising a structure {→3}-β-D-glucopyranosyl-(1→4)-β-D-glucuronic acid-(1→4)-β-D-glucopyranosy 1-(1→4) α-L-rhamnopyranosyl-(1→4)nα-L-fucopyranosyl(1→3), wherein the polyacrylamide is cross-linked in the presence of the at least one poly saccharide by a cross-linking agent including multivalent cations, complexes thereof, organic cross-linking agents, or any combination thereof.
Dependencies are inferred from the claim text.