METHOD FOR PREPARING SUPER ABSORBENT RESIN

WIPO Patent Application WO/2015/047029

A8

The present invention relates to a method for preparing a super absorbent resin. The method for preparing a super absorbent resin according to the present invention comprises the steps of: forming a hydrous gel phase polymer by performing thermal polymerization or photo-polymerization on a monomer composition containing a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the hydrous gel phase polymer; pulverizing the dried polymer; mixing the pulverized polymer with a surface cross-linker and core-shell structured polymer particles; and performing a surface cross-linking reaction. According to the present invention, the polymer particles are added at the time of surface cross-linking, thereby obtaining a super absorbent resin having improved permeability.

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LEE YONG HUN (KR)
HAN CHANG SUN (KR)
KIM MI YOUNG (KR)
LEE SANG-GI (KR)

PCT/KR2014/009201

April 30, 2015

September 30, 2014

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LG CHEMICAL LTD (KR)

C08F2/10; C08F20/10; C08F265/06; C08J3/075; C08J3/24

YOU ME PATENT AND LAW FIRM (Gangnam-gu, Seoul 135-912, KR)

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