公开(公告)号：US20230124243A1

公开(公告)日：2023-04-20

申请号：US17909901

申请日：2021-12-23

申请人： LG Chem, Ltd.

发明人： Sung Soo Park ,  Heechang Woo ,  Gicheul Kim

IPC分类号： B01J20/26 ,  C08J3/12 ,  C08J3/24 ,  B01J20/32 ,  C08F220/06

摘要： The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, it relates to a method for preparing a super absorbent polymer capable of improving drying efficiency, reducing a generation amount of refines, and simultaneously improving absorption performance, in particular, absorbing under pressure and permeability of the finally prepared super absorbent polymer by controlling granulation strength of the extruded fine reassembly.

公开(公告)号：US20210146336A1

公开(公告)日：2021-05-20

申请号：US17045025

申请日：2019-11-08

申请人： LG Chem, Ltd.

发明人： Jaeyul Kim ,  Jong Hun Song ,  Gicheul Kim ,  Yoon Jae Min ,  Ki Hyun Kim ,  Seul Ah Lee ,  In Yong Jeong ,  Heechang Woo

IPC分类号： B01J20/26 ,  C08F120/06 ,  C08F222/10 ,  C08F2/48 ,  C08J9/14 ,  C08J9/16 ,  C08K9/10

摘要： The method for preparing a super absorbent polymer according to the present disclosure has a feature that it is possible to reduce the generation of a fine powder during production of the super absorbent polymer while maintaining excellent physical properties of the super absorbent polymer, including centrifuge retention capacity (CRC) and vortex removal time.

公开(公告)号：US20220203375A1

公开(公告)日：2022-06-30

申请号：US17608030

申请日：2020-05-12

申请人： LG Chem, Ltd.

发明人： Heechang Woo

IPC分类号： B02C18/22 ,  B02C18/10 ,  B02C18/24 ,  B29B7/42

摘要： Disclosed is a hydrogel shredding device. The hydrogel shredding device includes: a first barrel body in which a first transfer space for transferring a hydrogel is formed, and extending in a first direction; a first transfer unit installed in the first barrel body and transferring the hydrogel in the first transfer space; a second barrel body installed on a lateral side of the first barrel body, and in which a second transfer space connected to the first transfer space extends in a second direction traversing the first direction; a second transfer unit installed in the second barrel body and transferring the hydrogel in the second transfer space; a cutter member installed in the second barrel body and pulverizing the hydrogel transferred by the second transfer unit; and a porous plate for discharging the hydrogel particles pulverized by the cutter member to an outside of the second barrel body.