公开(公告)号：US20200223969A1

公开(公告)日：2020-07-16

申请号：US16339227

申请日：2017-12-08

Applicant: LG Chem, Ltd.

Inventor： Ro Mi Lee ,  No Ma Kim ,  Yu Jin Kim ,  Ho Young Lee ,  Sun Keun Kim ,  Su Min Na ,  Youk Reol Na ,  Heung Yeal Choi

IPC: C08F236/10 ,  C08L9/06 ,  C08K3/04 ,  C08K3/36

Abstract: A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount from 15 wt % to less than 30 wt %, and a rubber composition including the same.

公开(公告)号：US20190153124A1

公开(公告)日：2019-05-23

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 ,  C08F4/48 ,  C08F4/50 ,  C08F4/54 ,  C08K5/5419 ,  C08K5/544

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.

公开(公告)号：US20240400770A1

公开(公告)日：2024-12-05

申请号：US18699407

申请日：2022-10-28

Applicant: LG Chem, Ltd.

Inventor： Yu Jin Kim ,  Jaemoon Jun ,  Kiyoul Yoon ,  Gicheul Kim ,  Ui Seok Chung ,  Sangwon Han

IPC: C08J3/24 ,  C08J3/12 ,  C08K5/103

Abstract: Provided are a superabsorbent polymer composition and a preparation method thereof, wherein the method is capable of suppressing aggregation of a water-containing gel polymer and improving pulverization processability in a pulverization process by including an additive represented by Chemical Formula 1: wherein all the variables are described herein.

公开(公告)号：US20240132640A1

公开(公告)日：2024-04-25

申请号：US18277156

申请日：2022-08-11

Applicant: LG Chem, Ltd.

Inventor： Seung Wook Cho ,  Kiyoul Yoon ,  Yu Jin Kim ,  Seongkyun Kang ,  Kookhyun Choi ,  Gicheul Kim

IPC: C08F20/06 ,  C08F2/44 ,  C08F2/50 ,  C08J3/24 ,  C08J3/28 ,  C08J5/18

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.

公开(公告)号：US20240091075A1

公开(公告)日：2024-03-21

申请号：US18266063

申请日：2022-05-11

Applicant: LG Chem, Ltd.

Inventor： Kiyoul Yoon ,  Myoungjin Shin ,  Seongkyun Kang ,  Yu Jin Kim ,  Gicheul Kim

IPC: A61F13/494 ,  A61F13/49

CPC classification number: A61F13/49426 ,  A61F13/49017 ,  A61F2013/15463

Abstract: Provided is an absorbent article exhibiting an improved effect of preventing the body fluid from leaking by including a superabsorbent polymer film having excellent absorbency in three-dimensional gathers.

公开(公告)号：US11702485B2

公开(公告)日：2023-07-18

申请号：US16963407

申请日：2019-05-08

Applicant: LG Chem, Ltd.

Inventor： Kyung Chang Seo ,  Yu Jin Kim ,  Youk Reol Na ,  No Ma Kim

IPC: C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  B60C1/00 ,  C08F236/06 ,  C08K3/04 ,  C08K3/36

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.

公开(公告)号：US20230089009A1

公开(公告)日：2023-03-23

申请号：US17802796

申请日：2021-09-07

Applicant: LG Chem, Ltd.

Inventor： Kiyoul Yoon ,  Seongkyun Kang ,  Yu Jin Kim ,  Gicheul Kim ,  Hyeon Choi ,  Se Yeol Park

IPC: C08J5/18 ,  B32B5/02 ,  B32B27/12 ,  B32B27/30 ,  B32B3/26 ,  C08L33/02 ,  C08K5/053

Abstract: The present disclosure relates to a polymer film, a preparation method of the same, and a polymer film laminate. Specifically, it relates to a new type of polymer film, which is thin and exhibits excellent absorption performance while having excellent flexibility and mechanical properties. In addition, the polymer film is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced. In addition, the present disclosure also relates to a preparation method of the above-described polymer film, and a polymer film laminate including the new type of polymer film.

公开(公告)号：US10928368B2

公开(公告)日：2021-02-23

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 ,  B01J20/283 ,  B01D15/42 ,  B01J20/10 ,  B01J20/281 ,  G01N30/86 ,  G01N30/34 ,  G01N30/00

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 polymer 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.

公开(公告)号：US20180371125A1

公开(公告)日：2018-12-27

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 ,  C08F236/10 ,  C08K5/17 ,  C08K5/544 ,  C08K5/56 ,  C08F2/38 ,  C08F2/06

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.

公开(公告)号：US09988515B2

公开(公告)日：2018-06-05

申请号：US14394422

申请日：2014-03-27

Applicant: LG CHEM, LTD.

Inventor： Ro Mi Lee ,  Sang Mi Lee ,  Heung Yeal Choi ,  Yu Jin Kim ,  Moon Seok Chun

IPC: C08K3/36 ,  C08C19/25 ,  C08L9/06 ,  B60C1/00 ,  C08C19/44 ,  C08L15/00

CPC classification number: C08K3/36 ,  B60C1/00 ,  B60C1/0016 ,  C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  C08F36/04 ,  C08F236/10 ,  C08L15/00 ,  C08F4/484

Abstract: Disclosed are a method for preparing a conjugated diene polymer including synthesizing an initiator having an anionic end containing an amine and a cationic end containing an alkali metal, polymerizing a combination of an aromatic vinyl monomer using the initiator to synthesize a polymer having a modified end, coupling or reacting the polymer with a compound having at least one silyl group substituted by an alkoxy group and a nitrogen atom to prepare a modified conjugated diene polymer having one end containing amine and the other end containing silyl group substituted by one or more alkoxy group and a nitrogen atom, and a rubber composition comprising the conjugated diene polymer and silica as a reinforcing agent and thus exhibiting superior heat generation, tensile strength, abrasion resistance and wet skid resistance.