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    HIGHLY ABSORBENT RESIN AND METHOD FOR PRODUCING SAME
    4.
    发明公开
    HIGHLY ABSORBENT RESIN AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：EP3438162A1

    公开(公告)日：2019-02-06

    申请号：EP17883446.1

    申请日：2017-10-25

    申请人： LG Chem, Ltd.

    发明人： AHN, Tae Bin ,  KIM, Dong Hyun ,  KIM, Yeon Soo ,  LEE, Hyun Sup ,  HAN, Chang Sun ,  LEE, Myung Han

    IPC分类号： C08J3/24 ,  C08L33/06 ,  C08J3/12 ,  C08J3/075 ,  C08F2/44 ,  C08K5/11

    摘要： The present invention relates to a super absorbent polymer exhibiting more improved absorption rate and liquid permeability, as well as having excellent basic absorption performance, and a method for producing the same. The super absorbent polymer comprises: a base polymer powder including a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface crosslinked layer formed on the base polymer powder and including a second crosslinked polymer in which the first crosslinked polymer is further crosslinked via a surface crosslinking agent, wherein the super absorbent polymer has: a fixed height absorption (FHA) (20 cm) for a physiological saline solution (0.9 wt% aqueous sodium chloride solution) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) for a physiological saline solution (0.685 wt% aqueous sodium chloride solution) of 35 (·10 -7 cm 3 ·s/g) or more, and T-20 of 180 seconds or less which indicates the time required for absorbing 1 g of the super absorbent polymer to 20 g of aqueous solution of 0.9 wt% sodium chloride and 0.01 wt% alcohol ethoxylate having 12 to 14 carbon atoms under pressure of 0.3 psi.