Method for producing solubilized polymer and method for producing water absorbent resin

Abstract

The present invention relates to a method for producing a solubilized polymer by decomposing a recovered water-absorbent resin to produce a solubilized polymer, the method including preparing a mixture containing a recovered water-absorbent resin, water, and a peroxide (excluding persulfates), wherein the mixture has a pH of 6.5 or more and 8.5 or less. The present invention also relates to a method for producing a water-absorbent resin, the method including using, as a part of a raw material, a solubilized polymer produced by decomposing a recovered water-absorbent resin. According to the present invention, a means capable of solubilizing (decomposing) a recovered water-absorbent resin in a short time without using a large amount of decomposer.

Dependencies are inferred from the claim text.