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1. (WO2018124550) METHOD FOR PREPARING POROUS SUPER ABSORBENT POLYMER

Pub. No.:    WO/2018/124550    International Application No.:    PCT/KR2017/014642
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 14 00:59:59 CET 2017
IPC: C08J 3/24
C08J 3/075
C08J 3/12
C08F 6/02
C08F 2/38
C08F 2/44
C08K 5/00
C08L 33/06
C08F 20/18
Applicants: LG CHEM, LTD.
주식회사 엘지화학
Inventors: YOON, Ki Youl
윤기열
JOO, Hyo Sook
주효숙
KIM, Gi Cheul
김기철
CHOI, Hyeon
최현
KIM, Ju Eun
김주은
Title: METHOD FOR PREPARING POROUS SUPER ABSORBENT POLYMER
Abstract:
The present invention relates to a method for preparing a super absorbent polymer. The method comprises: a step for producing a neutralized monomer solution by adding an internal cross-linking agent, an initiator, an inorganic filler, and a non-ionic surfactant into a neutralized solution in which 80 mol% or more of a water-soluble ethylene-based unsaturated monomer having an acidic group is neutralized; a step for high-shear-mixing the neutralized monomer solution; a step for producing a hydrogel polymer from the high-shear-mixed neutralized monomer solution through thermal polymerization or photopolymerization; and a step for producing a base resin powder by drying, pulverizing, and classifying the hydrogel polymer.