METHOD FOR PREPARING SUPER ABSORBENT RESIN

Title:

METHOD FOR PREPARING SUPER ABSORBENT RESIN

Document Type and Number:

WIPO Patent Application WO/2015/084059

Kind Code:

A1

Abstract:

The present invention relates to a method for preparing a super absorbent resin comprising the steps of: a) thermally polymerizing or photopolymerizing a monomer composition, which contains water soluble ethylene-based unsaturated monomers and a polymerization initiator, to prepare a hydrous gel polymer; b) drying the hydrous gel polymer; c) grinding the dried hydrous gel polymer; d) adding particles and a surface crosslinking agent having the following properties of i) and ii) to the ground hydrous gel polymer; and e) performing a surface crosslinking reaction. i) BET specific surface area of 300 to 1500 m2/g, ii) porosity of 50% or higher

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Inventors:

LEE SEUNG-MO (KR)
KIM YOUNG-SAM (KR)
OH KYOUNG-SHIL (KR)
YANG YOUNG-IN (KR)
KIM YE-HON (KR)

Application Number:

PCT/KR2014/011788

Publication Date:

June 11, 2015

Filing Date:

December 03, 2014

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C08F2/00; C08F2/10; C08F2/44; C08F20/10; C08J3/075; C08J3/26

Domestic Patent References:

WO2012070845A2

2012-05-31

Foreign References:

JP2004002145A	2004-01-08
JP2012052080A	2012-03-15
KR19990028909A	1999-04-15
JP2009057496A	2009-03-19
KR20120081113A	2012-07-18

Other References: