| abstract |
(57) [Problem] To provide a crosslinked polysuccinimide useful as a precursor of a crosslinked polyaspartic acid-based resin having a high water absorbing ability, with high productivity and excellent operability. A succinimide dissolved in a good solvent is added to a solution in which a crosslinking agent is added and introduced as a pendant group. Then, a dispersant is charged to bring the reaction system into a dispersed state, and then a base is added to perform crosslinking. A process for producing a crosslinked polysuccinimide, which comprises allowing the reaction to proceed. |