公开(公告)号：US11697699B2

公开(公告)日：2023-07-11

申请号：US16647751

申请日：2018-09-28

申请人： LG Chem, Ltd.

发明人： Sung Hyun Park ,  Hyun Sup Lee ,  Jong Sang Park ,  Joong Soo Kim ,  Young Suk You ,  Dae Sik Hong ,  Myung Han Lee

IPC分类号： G01N3/36 ,  G01N33/44 ,  C08L23/08 ,  C08F210/16 ,  G01N3/56 ,  C08F110/04

CPC分类号： C08F210/16 ,  G01N3/56 ,  G01N33/442 ,  C08F110/04 ,  C08L23/08 ,  G01N2203/0071

摘要： A method for evaluating long-term durability of a resin for piping is provided. Unlike the conventional FNCT evaluation method requiring a long period of time, the method disclosed herein is capable of predicting long-term durability of a resin for piping in a short time, by a simple calculation using a content of tie molecules, an entanglement molecular weight (Me) and a content of ultrahigh molecular weight components. In addition, the olefinic polymer is configured to have a predetermined relationship in relation to the content of tie molecules, the entanglement molecular weight (Me) and the content of ultrahigh molecular weight components, whereby the polymer of the present application can be used in the manufacture of a heating pipe requiring excellent long-term durability.

公开(公告)号：US11267180B2

公开(公告)日：2022-03-08

申请号：US16481681

申请日：2018-01-26

申请人： LG Chem, Ltd.

发明人： Chae Gyu Lee ,  Myung Han Lee ,  Byeong In Ahn ,  Kyung Hwan Yoon ,  Chang Kwon Chung

IPC分类号： B29C48/305 ,  B29C48/00 ,  B29C48/80 ,  B29C48/885 ,  B29C48/08 ,  B29C48/86 ,  B29C48/92 ,  B29L7/00 ,  B29C48/475 ,  B29C48/485 ,  B29C48/285 ,  B29C48/29

摘要： The present invention relates to an extrusion die and a method for extruding a sheet using the same, and according to one aspect of the present invention, there is provided an extrusion die comprising a storage part configured to hold a raw material, the storage part defining a first width, a pressure part configured to move the raw material through the storage part, a first die defining a second width less than the first width, such that a flow width of the raw material becomes narrower, a second die in fluid communication with the first die, the second die defining a width that increases from the second width to a third width, such that the flow width of the raw material passing through the first die becomes wider and a flow thickness becomes smaller, and a heating part configured to heat the raw material passing through the second die.

公开(公告)号：US11214665B2

公开(公告)日：2022-01-04

申请号：US16468998

申请日：2017-12-27

申请人： LG Chem, Ltd.

发明人： Jae Hoon Choe ,  Jong Young Choi ,  Dong Cheol Choe ,  Hyun Ju Kim ,  Hyeon Hui Kim ,  Jung Yong Lee ,  Chan Joong Kim ,  Myung Han Lee ,  Hye Jin Han

IPC分类号： C08K5/18 ,  C07C209/70 ,  C07C211/53 ,  C08F236/10

摘要： A polymerization initiator composition includes isomers of the polymerization initiator, thereby preventing instability and inertness of the polymerization initiator and physical property degradation of the SSBR, minimizing by-products and unreacted materials, and remarkably improving a conversion ratio. In addition, when the polymerization initiator composition according to the present invention is used, there is no need to add a polar additive separately upon polymer polymerization, since the polar additive is already added at the time of preparing the polymerization initiator. Further, the polymer initiator composition has high polarity so that the hydrophobic SSBR and the hydrophilic silica can be effectively dispersed.

公开(公告)号：US10775287B2

公开(公告)日：2020-09-15

申请号：US16082725

申请日：2017-11-03

申请人： LG Chem, Ltd.

发明人： Hyun Sup Lee ,  Sung Hyun Park ,  Joong Soo Kim ,  Dae Sik Hong ,  Myung Han Lee ,  Young Suk You

IPC分类号： G01N3/18 ,  C08F10/02 ,  G01N37/00 ,  G02B1/04

摘要： The present disclosure relates to an assessment method for a polyethylene resin, and more specifically to a new assessment method for a polyethylene resin which can accurately determine long-term durability of a molded article by using physical properties that are easily measurable in a short time.

公开(公告)号：US20170189575A1

公开(公告)日：2017-07-06

申请号：US15315111

申请日：2015-06-12

申请人： LG Chem, Ltd.

发明人： Hyemin Lee ,  Sung Hyun Park ,  Myung Han Lee ,  Ye Hoon Im ,  Sang Eun Kim

IPC分类号： A61L15/60 ,  C08J3/24 ,  A61L15/24 ,  C08L101/14 ,  C08F220/06 ,  B01J20/26 ,  C08J3/075 ,  C08F222/10

CPC分类号： A61L15/60 ,  A61L15/24 ,  B01J20/267 ,  B01J2220/68 ,  C08F2/10 ,  C08F220/06 ,  C08F222/1006 ,  C08F222/385 ,  C08J3/075 ,  C08J3/245 ,  C08J2333/02 ,  C08L101/14 ,  C08F2222/1013

摘要： The present invention relates to a super absorbent polymer which exhibits totally well-balanced and excellent physical properties through the optimization of a centrifuge retention capacity, an absorbency under pressure, a liquid permeability and a gel strength. Such a super absorbent polymer is a super absorbent polymer comprising a cross-linked polymer in which a base polymer in the form of a powder obtained by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group in which at least a part thereof is neutralized is subjected to a surface crosslinking, and a centrifuge retention capacity (CRC), an absorbency under pressure (AUP), a liquid permeability (physiological saline solution flow conductivity; SFC), a horizontal gel strength (G′) or the like can satisfy a predetermined relationship of formula.

公开(公告)号：US20170130103A1

公开(公告)日：2017-05-11

申请号：US15106997

申请日：2015-06-30

申请人： LG Chem, Ltd.

发明人： Dong Hyun Woo ,  Se Woo Yang ,  Myung Han Lee

IPC分类号： C09J109/00 ,  G06F3/041 ,  C08L9/00

CPC分类号： C09J109/00 ,  C08G18/672 ,  C08L9/00 ,  C08L75/06 ,  C08L75/16 ,  C09J175/06 ,  C09J175/16 ,  G06F3/041 ,  C08G18/69

摘要： The present application relates to a curable composition, a cured product and use of the curable composition and cured product. An exemplary curable composition may form a cured product having low permittivity and an excellent adhesive property, and thus may be usefully used for direct bonding of a variety of optical functional members of display devices, for example, direct bonding of a touch panel and a display panel.

公开(公告)号：US20210197173A1

公开(公告)日：2021-07-01

申请号：US17201484

申请日：2021-03-15

申请人： LG Chem, Ltd.

发明人： Tae Bin Ahn ,  Dong Hyun Kim ,  Yeon Soo Kim ,  Hyun Sup Lee ,  Chang Sun Han ,  Myung Han Lee

IPC分类号： B01J20/26 ,  B01J20/30 ,  C08F220/40 ,  C08J3/24

摘要： 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) of 22.5 g/g to 29 g/g, a saline flow conductivity (SFC) of 35 (·10−7 cm3·s/g) or more, and T-20 of 180 seconds or less.

公开(公告)号：US20200223964A1

公开(公告)日：2020-07-16

申请号：US16647751

申请日：2018-09-28

申请人： LG Chem, Ltd.

发明人： Sung Hyun Park ,  Hyun Sup Lee ,  Jong Sang Park ,  Joong Soo Kim ,  Young Suk You ,  Dae Sik Hong ,  Myung Han Lee

IPC分类号： C08F210/16 ,  G01N3/56 ,  G01N33/44

摘要： A method for evaluating long-term durability of a resin for piping is provided. Unlike the conventional FNCT evaluation method requiring a long period of time, the method disclosed herein is capable of predicting long-term durability of a resin for piping in a short time, by a simple calculation using a content of tie molecules, an entanglement molecular weight (Me) and a content of ultrahigh molecular weight components. In addition, the olefinic polymer is configured to have a predetermined relationship in relation to the content of tie molecules, the entanglement molecular weight (Me) and the content of ultrahigh molecular weight components, whereby the polymer of the present application can be used in the manufacture of a heating pipe requiring excellent long-term durability.

公开(公告)号：US10508164B2

公开(公告)日：2019-12-17

申请号：US15546474

申请日：2016-12-23

申请人： LG Chem, Ltd.

发明人： Oh Joo Kwon ,  Sol Cho ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Sung Hyun Park ,  Myung Han Lee

IPC分类号： C08F210/02 ,  C08F210/16

摘要： The low density polyethylene copolymer according to the present invention is characterized in that as LCB (Long Chain Branch) is introduced into LLDPE, the melt strength is remarkably high even without blending with LDPE, and thus it can be advantageously applied to blown film processing and the like.

公开(公告)号：US10221340B2

公开(公告)日：2019-03-05

申请号：US15106997

申请日：2015-06-30

申请人： LG Chem, Ltd.

发明人： Dong Hyun Woo ,  Se Woo Yang ,  Myung Han Lee

IPC分类号： C09J109/00 ,  C08L9/00 ,  G06F3/041 ,  C09J175/06 ,  C08L75/06 ,  C08G18/67 ,  C09J175/16 ,  C08L75/16

摘要： The present application relates to a curable composition, a cured product and use of the curable composition and cured product. An exemplary curable composition may form a cured product having low permittivity and an excellent adhesive property, and thus may be usefully used for direct bonding of a variety of optical functional members of display devices, for example, direct bonding of a touch panel and a display panel.