公开(公告)号：US11597828B2

公开(公告)日：2023-03-07

申请号：US16628472

申请日：2019-04-10

Applicant: LG Chem, Ltd.

Inventor： Youk Reol Na ,  Jae Sun Choi ,  No Ma Kim ,  Jin Young Kim ,  Yu Jin Kim ,  Jae Moon Jun

IPC: B60C1/00 ,  C08F2/04 ,  C08F4/48 ,  C08K3/04 ,  C08K3/36 ,  C08L9/00 ,  C08L9/06 ,  C08C19/22 ,  C08C19/25 ,  C08L25/10 ,  C08K3/013 ,  C08F236/06 ,  C08F236/08 ,  C08F236/10 ,  C08K5/00 ,  C08K5/47

Abstract: The present invention relates to a rubber composition having excellent abrasion resistance and improved tensile properties and viscoelasticity properties by controlling compatibility among rubber components, and a tire manufactured using the same.

公开(公告)号：US11427668B2

公开(公告)日：2022-08-30

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 ,  C08K3/04 ,  C08K3/36 ,  C08L9/06

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：US11359078B2

公开(公告)日：2022-06-14

申请号：US16622208

申请日：2019-01-30

Applicant: LG CHEM, LTD.

Inventor： Youk Reol Na ,  Jae Sun Choi ,  Jin Young Kim ,  No Ma Kim

IPC: C08F2/04 ,  C08L9/06 ,  C08K3/36 ,  C08K3/06 ,  B60C1/00 ,  C08F136/06

Abstract: The present invention relates to a rubber composition having excellent abrasion resistance and improved tensile and viscoelastic properties by controlling compatibility among rubber components, and a tire manufactured using the same.

公开(公告)号：US12275806B2

公开(公告)日：2025-04-15

申请号：US17441433

申请日：2020-10-12

Applicant: LG Chem, Ltd.

Inventor： Tae Chul Lee ,  He Seung Lee ,  No Ma Kim ,  Heung Yeal Choi ,  Youk Reol Na

IPC: C08F136/06 ,  B01J19/00 ,  C08F2/00 ,  C08F2/01 ,  C08F8/04 ,  C08F236/10

Abstract: The present invention relates to a method for preparing a modification initiator, the method capable of reducing side reactions to the minimum and obtaining the modification initiator with a high conversion rate, and an apparatus for performing the same, wherein the method includes (S1) reacting a first fluid including a modification functional group-containing compound and a conjugated diene-based monomer and a second fluid including a polymerization initiation functional group-containing compound, and (S2) obtaining a third fluid including a modification initiator prepared by the reaction of Step S1, wherein the modification functional group-containing compound is used in a ratio of greater than 1 mole based on 1 mole of the polymerization initiation functional group-containing compound, the conjugated diene-based monomer is used in a ratio of 1 mole to 4 moles based on 1 mole of the modification functional group-containing compound, and Step S1 and Step S2 are continuously performed.

公开(公告)号：US12122856B2

公开(公告)日：2024-10-22

申请号：US16962963

申请日：2018-12-05

Applicant: LG Chem, Ltd.

Inventor： Ro Mi Lee ,  Hae Sung Sohn ,  Min Sik Mun ,  No Ma Kim ,  Heung Yeal Choi ,  Youk Reol Na ,  Su Min Na

IPC: C08C19/25 ,  B60C1/00 ,  C08C19/22 ,  C08F8/30 ,  C08F8/42 ,  C08F236/14 ,  C08K3/04 ,  C08K3/34 ,  C08L15/00

CPC classification number: C08C19/25 ,  B60C1/0016 ,  C08C19/22 ,  C08F8/30 ,  C08F8/42 ,  C08F236/14 ,  C08K3/04 ,  C08K3/34 ,  C08L15/00 ,  C08F36/06 ,  C08F8/42

Abstract: A modified conjugated diene-based polymer is provided, having remarkable processability and excellent tensile strength and viscoelasticity properties, and a rubber composition including the same is also provided. The modified conjugated diene-based polymer has a unimodal shape molecular weight distribution curve by gel permeation chromatography, narrow molecular weight distribution and a Mooney stress-relaxation ratio of 0.7 or more, and includes a functional group derived from a modifier represented by Formula 1, and thus has remarkable processability and excellent tensile properties and viscoelasticity properties.

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：US20220213239A1

公开(公告)日：2022-07-07

申请号：US17441433

申请日：2020-10-12

Applicant: LG Chem, Ltd.

Inventor： Tae Chul Lee ,  He Seung Lee ,  No Ma Kim ,  Heung Yeal Choi ,  Youk Reol Na

IPC: C08F136/06 ,  C08F2/01 ,  C08F2/00 ,  C08F236/10 ,  C08F8/04 ,  B01J19/00

Abstract: The present invention relates to a method for preparing a modification initiator, the method capable of reducing side reactions to the minimum and obtaining the modification initiator with a high conversion rate, and an apparatus for performing the same, wherein the method includes (S1) reacting a first fluid including a modification functional group-containing compound and a conjugated diene-based monomer and a second fluid including a polymerization initiation functional group-containing compound, and (S2) obtaining a third fluid including a modification initiator prepared by the reaction of Step S1, wherein the modification functional group-containing compound is used in a ratio of greater than 1 mole based on 1 mole of the polymerization initiation functional group-containing compound, the conjugated diene-based monomer is used in a ratio of 1 mole to 4 moles based on 1 mole of the modification functional group-containing compound, and Step S1 and Step S2 are continuously performed.

公开(公告)号：US20210147656A1

公开(公告)日：2021-05-20

申请号：US16622208

申请日：2019-01-30

Applicant: LG CHEM, LTD.

Inventor： Youk Reol Na ,  Jae Sun Choi ,  Jin Young Kim ,  No Ma Kim

IPC: C08L9/06 ,  C08F136/06 ,  C08F2/04 ,  C08K3/36 ,  C08K3/06 ,  B60C1/00

Abstract: The present invention relates to a rubber composition having excellent abrasion resistance and improved tensile and viscoelastic properties by controlling compatibility among rubber components, and a tire manufactured using the same.

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

IPC: C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  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：US20220127446A1

公开(公告)日：2022-04-28

申请号：US17427263

申请日：2020-09-11

Applicant: LG Chem, Ltd.

Inventor： Hye Jung Shin ,  You Seok Seo ,  He Seung Lee ,  Youk Reol Na ,  Hyun Jun Kim ,  Ro Mi Lee ,  Kyoung Hwan Oh ,  Jae Sun Choi

IPC: C08L51/04 ,  C08C19/25

Abstract: A modified conjugated diene-based polymer, a method of making the same, and a rubber composition including the same are disclosed herein. The modified conjugated diene-based polymer has excellent processability and good tensile strength and viscoelasticity. In some embodiments, a modified conjugated diene-based polymer includes a first chain including a repeating unit derived from a conjugated diene-based monomer, a second chain including a repeating unit derived from a compound represented by Formula 1 or Formula 2, and a derived unit from an alkoxysilane-based modifier, wherein the first chain and the second chain are coupled by the derived unit from the modifier.