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公开(公告)号：US12129317B2
公开(公告)日：2024-10-29
申请号：US17425550
申请日：2020-09-11
Applicant: LG Chem, Ltd.
Inventor： Hyoung Woo Lee , Ro Mi Lee , Yu Jin Kim
Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. The modified conjugated diene-based polymer has excellent storage stability and excellent processability, tensile strength and viscoelasticity properties. In some embodiments, a modified conjugated diene-based polymer includes a repeating unit derived from a conjugated diene-based monomer, and a functional group derived from an aminoalkoxysilane-based modifier, wherein the rate of change of molecular weight distribution calculated by Mathematical Formula 1 is 10% or less.
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公开(公告)号：US20230303727A1
公开(公告)日：2023-09-28
申请号：US18204634
申请日：2023-06-01
Applicant: LG Chem, Ltd.
Inventor： Kyung Chang Seo , Yu Jin Kim , Youk Reol Na , No Ma Kim
CPC classification number: C08C19/22 , C08C19/25 , C08C19/44 , C08F236/06 , C08K3/04 , C08K3/36 , B60C1/00
Abstract: A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, the modified conjugated diene-based polymer includes a modified monomer-derived functional group represented by Formula 1, and an aminoalkoxysilane-based modifier-derived functional group at least one end thereof, wherein the polymer having a unimodal molecular weight distribution, and a polydispersity index (PDI) of 1.0 or more to less than 1.7. The polymer has a narrow and unimodal molecular weight distribution, and has excellent tensile properties and viscoelastic properties while having excellent processability.
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公开(公告)号：US10676543B2
公开(公告)日：2020-06-09
申请号：US15766480
申请日：2017-07-05
Applicant: LG Chem, Ltd.
Inventor： Kyung Chang Seo , No Ma Kim , Sang Mi Lee , Yu Jin Kim
IPC: C08C19/25 , C08F236/10 , C08C19/44 , C08F236/06 , C08C19/22 , C07F7/18 , C08L15/00 , C08F4/48 , C08F4/50 , C08F4/54 , C08K5/5419 , C08K5/544 , C08K3/22
Abstract: The present invention relates to a modified conjugated diene-based polymer, a method of preparing the same, and a rubber composition including the same, and more specifically provides a rubber composition which includes a repeating unit derived from a conjugated diene-based monomer having a trans-1,4 bond content of 80 wt % or more and a functional group derived from an alkoxysilane-based modifier, a method of preparing the same, and a rubber composition including the same.
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公开(公告)号：US20190256635A1
公开(公告)日：2019-08-22
申请号：US16342124
申请日：2017-12-07
Applicant: LG Chem, Ltd.
Inventor： Jin Young Kim , Jun Seok Ko , No Ma Kim , Yu Jin Kim , Ki Seok Son , Hae Sung Sohn , Ro Mi Lee , Sang Mi Lee , Tae Chul Lee , He Seung Lee
IPC: C08F236/10 , C08F36/06 , C08F36/08 , C08K5/544 , C08K3/36 , C08F36/16 , C08F2/00 , C08K5/06 , C08K5/1535 , C08K5/17
Abstract: The present invention relates to a method for preparing a modified conjugated diene-based polymer, and more particularly, provides a method for preparing a modified conjugated diene-based polymer including a step of polymerizing a conjugated diene-based monomer in the presence of an organometal compound in a hydrocarbon solvent to prepare an active polymer which is coupled with an organometal (S1); and a step of reacting or coupling the active polymer prepared in step (S1) with a modifier (S2), wherein step (S1) is continuously performed in two or more polymerization reactors, and a polymerization conversion ratio in a first reactor among the polymerization reactors is 50% or less.
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公开(公告)号：US20180328901A1
公开(公告)日：2018-11-15
申请号：US15739504
申请日：2017-07-14
Applicant: LG Chem, Ltd.
Inventor： Heung Yeal Choi , No Ma Kim , Yu Jin Kim
IPC: G01N30/88 , B01J20/281 , G01N30/86
CPC classification number: G01N30/88 , B01D15/426 , B01J20/103 , B01J20/283 , G01N30/34 , G01N30/48 , G01N30/8631 , G01N2030/486 , G01N2030/885 , G01N33/445
Abstract: The present invention relates to a method for measuring a polymer modification ratio, and more particularly, to a method for measuring a polymer modification ratio, which includes preparing a first solution by dissolving a polymer mixture containing a modified polymer and an unmodified polymer in a first solvent, injecting the first solution into a column filled with an adsorbent, adsorbing the modified polymer onto the adsorbent, and eluting the first solution in which the unmodified copolymer is dissolved, transferring the eluted first solution to a detector, injecting a second solvent into the column to elute the second solution in which the adsorbed modified polymer is dissolved, and transferring the eluted second solution to the detector.
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Patent Agency Ranking
公开(公告)号：US10947338B2
公开(公告)日：2021-03-16
申请号：US16087512
申请日：2017-03-21
Applicant: LG CHEM, LTD.
Inventor： Yong Jin Jang , Joong Jin Han , Youngjea Kim , Esder Kang , Yunah Yu , Eunju Park , Yu Jin Kim
IPC: C08G61/02 , C08G75/06 , C08G75/23 , H01M8/1032 , H01M8/1039 , H01M8/18 , C08L61/00 , C08G65/40 , H01M8/1027 , H01M8/1025 , H01M8/1018
Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly and a redox flow battery including the polymer electrolyte membrane.
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公开(公告)号：US10920004B2
公开(公告)日：2021-02-16
申请号：US16342124
申请日：2017-12-07
Applicant: LG Chem, Ltd.
Inventor： Jin Young Kim , Jun Seok Ko , No Ma Kim , Yu Jin Kim , Ki Seok Son , Hae Sung Sohn , Ro Mi Lee , Sang Mi Lee , Tae Chui Lee , He Seung Lee
IPC: C08F236/10 , C08F2/01 , C08F36/06 , C08F36/08 , C08F36/16 , C08K3/36 , C08K5/06 , C08K5/17 , C08F36/04 , C08F2/38 , C08C19/44 , C08C19/25 , C08C19/22 , C08F2/00 , C08K5/1535 , C08K5/544
Abstract: The present invention relates to a method for preparing a modified conjugated diene-based polymer, and more particularly, provides a method for preparing a modified conjugated diene-based polymer including a step of polymerizing a conjugated diene-based monomer in the presence of an organometal compound in a hydrocarbon solvent to prepare an active polymer which is coupled with an organometal (S1); and a step of reacting or coupling the active polymer prepared in step (S1) with a modifier (S2), wherein step (S1) is continuously performed in two or more polymerization reactors, and a polymerization conversion ratio in a first reactor among the polymerization reactors is 50% or less.
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公开(公告)号：US10808055B2
公开(公告)日：2020-10-20
申请号：US16061859
申请日：2017-10-18
Applicant: LG Chem, Ltd.
Inventor： Yu Jin Kim , No Ma Kim , Heung Yeal Choi , Ho Young Lee
IPC: C08F36/06 , C08F8/32 , C07F7/18 , C08L15/00 , C08C19/22 , C08C19/44 , C07F7/10 , C08C19/25 , C08F2/06 , C08F2/38 , C08F236/10 , C08K5/17 , C08K5/544 , C08K5/56 , C08F236/06 , C08K3/22
Abstract: The present invention relates to a modified conjugated diene-based polymer, and more particularly, provides a modified conjugated diene-based polymer which includes a repeating unit derived from a conjugated diene-based monomer and includes at one terminal, a functional group derived from a modifier which includes a compound represented by Formula 1, and a method for preparing the same.
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公开(公告)号：US20240228679A9
公开(公告)日：2024-07-11
申请号：US18277156
申请日：2022-08-12
Applicant: LG Chem, Ltd.
Inventor： Seung Wook Cho , Kiyoul Yoon , Yu Jin Kim , Seongkyun Kang , Kookhyun Choi , Gicheul Kim
CPC classification number: C08F20/06 , C08F2/44 , C08F2/50 , C08J3/247 , C08J3/28 , C08J5/18 , C08J2333/08 , C08J2401/10
Abstract: Provided are a monomer composition for producing a superabsorbent polymer film, the monomer composition comprising an acrylic acid-based monomer having acidic groups, at least part of which is neutralized, a crosslinking agent, a cellulose-based thickener, a moisturizer, a polymerization initiator, a polyvalent metal salt, and a solvent, and being capable of producing a superabsorbent polymer film showing excellent absorption performances, particularly, an improved initial absorption rate while having a thin thickness, a method of producing a superabsorbent polymer film using the same, and a superabsorbent polymer film produced therefrom.
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公开(公告)号：US20230201801A1
公开(公告)日：2023-06-29
申请号：US17928475
申请日：2021-09-10
Applicant: LG Chem, Ltd.
Inventor： Yu Jin Kim , Hyeon Choi , Seongkyun Kang , Kiyoul Yoon , Gicheul Kim , Yoon Jae Min , Seul Ah Lee , Ui Seok Chung
CPC classification number: B01J20/267 , B01J20/262 , B01J20/103 , B01J20/12 , B01J20/3085 , B01J20/3021 , B01J20/28016 , B01J20/28004
Abstract: The present disclosure relates to a super absorbent polymer, and a preparation method thereof. More specifically, it relates to a super absorbent polymer prepared such that agglomeration between pulverized particles is suppressed, and drying efficiency and uniformity of particle size distribution are improved by including a carboxylic acid-based additive having a specific structure and hydrophobic particles before drying the hydrogel polymer, and a preparation method thereof.
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