WATER ABSORBING RESIN AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a water absorbing resin having an excellent water absorbing capacity, biodegradability and a low dissolution ratio, and to provide a method for producing the same. SOLUTION: The water absorbing resin is obtained by crosslinking polysaccharides and polyvinyl alcohol using a crosslinking agent. A dialdehyde compound or a polyvalent carboxylic acid compound is used as the crosslinking agent. The water absorbing resin has≥10 g/g water absorbing capacity for physiological saline,≤30% dissolution ratio in the physiological saline and≥15% biodegradation ratio. The method for producing the water absorbing resin comprises mixing the polysaccharides and polyvinyl alcohol with the crosslinking agent and heating the resultant mixture. COPYRIGHT: (C)2004,JPO