Unicharm Corporation

Hiroki Yoshikawa

Takayoshi Konishi

Toru Oba

Naoyuki Funamizu

Ken Ushijima

Nowaki Hijikata

A method enabling a used superabsorbent polymer recovered from used absorbent, etc., to be readily and inexpensively recovered without using acids or alkalies. The used superabsorbent polymer is treated with an aqueous solution of a multivalent metal salt such as calcium chloride, etc., the superabsorbent polymer treated with the aqueous solution of a multivalent metal salt is treated with an aqueous solution of an alkali metal salt such as sodium chloride, etc., the superabsorbent polymer treated with the aqueous solution of an alkali metal salt is washed with water, and the superabsorbent polymer washed with water is then dried.

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Hokkaido, Japan

Hiroki Yoshikawa