The polyacrylonitrile powder was hydrolyzed in a caustic solution.The obtained product was treated by either crosslinking or adding an external crosslinking agent to produce the absorbent resin.

• 将聚丙烯腈粉末用碱水解,所得到的产物分别用外加交联剂法和热交联法交联,制备高吸水性树脂。