A method for producing a regenerated superabsorbent polymer, a method for producing a highly water-absorbent polymer using a regenerated superabsorbent polymer, and a regenerated superabsorbent polymer.

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a regenerated superabsorbent polymer capable of effectively using a used superabsorbent polymer derived from a used sanitary product in a product using the superabsorbent polymer as a raw material. .. The present method is a method for producing a regenerated superabsorbent polymer, which is a raw material for producing a superabsorbent polymer, from a used superabsorbent polymer derived from a used sanitary product. In this method, the inactivation step S30 for inactivating the used superabsorbent polymer with an acidic solution and the oxidant treatment for treating the used superabsorbent polymer inactivated with an acidic solution with an oxidizing agent under acidic conditions. A step S31 and a drying step S33 of drying the used superabsorbent polymer treated with an oxidizing agent to produce a regenerated superabsorbent polymer are provided. [Selection diagram] Fig. 2