-
公开(公告)号：US10967347B2
公开(公告)日：2021-04-06
申请号：US16754628
申请日：2018-10-12
申请人： LG Chem, Ltd.
发明人： Sunyoung Kim , Young Cheol Jung , Ye Hoon Im , Youngsoo Song , Kyunghoon Min
摘要： A chute type monomer dispenser is provided in the present disclosure. The chute type monomer dispenser includes a chute dispenser installed to be slanted in a direction of a polymerization apparatus, the chute dispenser is configured to inject a monomer to the polymerization apparatus through an injection pipe having an injection portion having an opening at an upper portion of the chute dispenser; and an injector configured to inject an initiator and a foaming agent to the injection portion.
-
公开(公告)号：US11478750B2
公开(公告)日：2022-10-25
申请号：US16623735
申请日：2018-11-13
申请人： LG CHEM, LTD.
发明人： Dae Hun Kim , Ayoung Lee , Kyunghoon Min , Bumjoo Kim , Ye Hoon Im
摘要： Provided is a feed spacer, in which angles of strands are differently formed in one feed spacer according to a flow direction of raw water, so that a differential pressure decrease region and a recovery increase region are separated to perform multiple functions, and a reverse osmosis filter module including the feed spacer.
-
公开(公告)号：US20210001295A1
公开(公告)日：2021-01-07
申请号：US16754628
申请日：2018-10-12
申请人： LG Chem, Ltd.
发明人： Sunyoung Kim , Young Cheol Jung , Ye Hoon Im , Youngsoo Song , Kyunghoon Min
摘要： A chute type monomer dispenser is provided in the present disclosure. The chute type monomer dispenser includes a chute dispenser installed to be slanted in a direction of a polymerization apparatus, the chute dispenser is configured to inject monomer to the polymerization apparatus through an injection pipe having an injection portion having an opening at an upper portion of the chute dispenser; and an injector configured to inject an initiator and a foaming agent to the injection portion.
-
公开(公告)号：US11484841B2
公开(公告)日：2022-11-01
申请号：US16618958
申请日：2018-10-17
申请人： LG CHEM, LTD.
发明人： Ayoung Lee , Dae Hun Kim , Bumjoo Kim , Chong Kyu Shin , Phill Lee , Kyunghoon Min
摘要： Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.
-
公开(公告)号：US20220111351A1
公开(公告)日：2022-04-14
申请号：US17431527
申请日：2020-11-05
申请人： LG Chem, Ltd.
发明人： Kyu Pal Kim , Kyunghoon Min , Gicheul Kim , Yoon Jae Min , Ki Hyun Kim
IPC分类号： B01J20/26 , B01J20/30 , C08F220/06 , C08F222/10 , C08F2/48 , C08J3/24 , C08K5/053 , C08K5/1565 , C08K3/36 , C08K3/30
摘要： A method for preparing superabsorbent polymer is disclosed herein. In some embodiments, a method includes polymerizing a monomer composition to form a hydrogel polymer, wherein the monomer composition comprises a water soluble ethylenically unsaturated monomer and a polymerization initiator, drying and grinding the hydrogel polymer to prepare a base resin powder, surface cross-linking the base resin powder using a surface cross-linking agent to prepare surface cross-linked base resin powder, and hydrating the surface cross-linked base resin powder by pulse spraying water to prepare a superabsorbent polymer, wherein a scattering index of droplets generated during the pulse spraying is 5 to 10, and wherein the scattering index is calculated in accordance with the following Mathematical Formula 1. The superabsorbent polymer can have an improved moisture content to prevent surface property change of the superabsorbent polymer, and decreased amount of fine powder which improves processability during manufacture of articles using superabsorbent polymer.
-
-
-
-
搜索结果
5 条记录 (耗时 0.012 秒)
