| abstract |
A process for producing a water-insoluble molded article having a step of treating a raw material molded body made of a water-soluble salt of a polyanionic polysaccharide with a treatment liquid containing an acid anhydride to make the raw material molded body water-insoluble Insoluble molding material useful as a medical material, a food material, and a cosmetic material, etc., is high in safety since the inherent characteristics of the polyanionic polysaccharide as a raw material are maintained and a chemical crosslinking agent is not required to be used can do. |