| abstract |
A water absorbent material, comprising, as a mainncomponent, a water absorbent resin which has a structure innwhich a anhydropolyamino acid having an ethylenicallynunsaturated double bond is grafted with polysaccharides,nwherein at least a portion of the anhydropolyamino acid isnhydrolyzed and crosslinked, has high water absorbency and highnbiodegradability even if the anhydropolyamino acid has a lownmolecular weight. |