Verfahren zur Herstellung eines Gelösten Polymerhaltigen Materials und Verfahren zur Herstellung eines Wasserabsorbierenden Harzes mit dem Gelösten Polymerhaltigen Material als Teil des Rohmaterials

Details

Veröffentlichungs-Nr.

EP4741453

Anmeldetag

14. Mai 2024

Veröffentlichung

16. Januar 2025

Rechtsraum

EP

IPC

C08J11/16, C08F8/50, C08J11/22

Abstract

Provided is a method for producing a solubilized polymer-containing material that makes it possible to efficiently decompose water-absorbent resins to efficiently produce the solubilized polymer-containing material, and provide a method for producing a water-absorbent resin in which a portion of the solubilized polymer-containing material is used as a raw material. The method for producing a solubilized polymer-containing material includes a heat treatment step of heat-treating a mixture (B) containing a water-absorbent resin (A), water, and a peroxide under conditions satisfying the following i) and ii), in which a mass average molecular weight (Mw) of a water-soluble content of a solubilized polymer-containing material (C) obtained in the heat treatment step is from 30000 to 1000000: i) a solid content concentration of the mixture (B) is 60 mass% or greater, and ii) a temperature of the heat treatment is 60°C or higher.

Anmelder

Firma

Nippon Shokubai Co., Ltd.

Land

🇯🇵 Japan