Water absorbent material
AssigneeDainippon Ink and Chemicals, Inc.
InventorsHisakazu Tanaka, Shigeki Ideguchi, Yoshiki Hasegawa
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Abstract
A water absorbent material, comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed and crosslinked, has high water absorbency and high biodegradability even if the anhydropolyamino acid has a low molecular weight.
Claims8
A water absorbent material comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed, and crosslinked.
A method for producing a water absorbent material comprising a water absorbent resin as a main component, which comprises reacting a anhydropolyamino acid having an ethylenically unsaturated double bond (A) with polysaccharides (B), crosslinking the reaction product with a crosslinking agent (C), and hydrolyzing at least a portion of constituent components of the anhydropolyamino acid.
A water absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and a water absorber containing a water absorbent material and a fiber material, which is formed between the liquid permeable sheet and the liquid impermeable sheet, wherein the water absorbent material used is a water absorbent material comprising, as a main component, a water absorbent resin which has a structure in which a anhydropolyamino acid having an ethylenically unsaturated double bond (A) is grafted with polysaccharides, wherein at least a portion of the anhydropolyamino acid is hydrolyzed and crosslinked.
Dependencies are inferred from the claim text.