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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.
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公开(公告)号：US20230067846A1
公开(公告)日：2023-03-02
申请号：US17796828
申请日：2021-03-23
Applicant: LG Chem, Ltd.
Inventor： Kiyoul Yoon , Seongkyun Kang , Yu Jin Kim , Gicheul Kim , Hyeon Choi , Se Yeol Park
IPC: B01J20/26 , C08F20/06 , C08J5/18 , B01J20/24 , B01J20/12 , B01J20/28 , B01J20/30 , B29C39/00 , B29C39/38 , B29C55/00 , B29C55/02
Abstract: The present disclosure relates to a super absorbent polymer film and a preparation method of the same. Specifically, it relates to a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance and high tensile strength. In addition, the super absorbent polymer film of the present disclosure 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.
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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.
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公开(公告)号：US20220259333A1
公开(公告)日：2022-08-18
申请号：US17606848
申请日：2020-09-11
Applicant: LG Chem, Ltd.
Inventor： Yu Jin Kim , Suk Joon Yoo , Geun Seung Baek , Hyun Jun 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 processability and good tensile strength and viscoelasticity. In some embodiments, a modified conjugated diene-based polymer includes a derived unit from a modifier, the modifier including three or more alkoxy groups bonded to silicon; a non-functional chain forming a silicon-carbon bond at one side of the derived unit from a modifier and including a repeating unit derived from a conjugated diene-based monomer; and a functional chain forming a silicon-carbon bond at the other side of the derived unit from a modifier and including two or more derived units from an N-functional group-containing monomer.
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公开(公告)号：US10066076B1
公开(公告)日：2018-09-04
申请号：US15968260
申请日：2018-05-01
Applicant: LG CHEM, LTD.
Inventor： Ro Mi Lee , Sang Mi Lee , Heung Yeal Choi , Yu Jin Kim , Moon Seok Chun
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.
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Patent Agency Ranking
公开(公告)号：US20230225916A1
公开(公告)日：2023-07-20
申请号：US18010064
申请日：2022-03-21
Applicant: LG Chem, Ltd.
Inventor： Kiyoul Yoon , Myoungjin Shin , Seongkyun Kang , Yu Jin Kim , Gicheul Kim
IPC: A61F13/514
CPC classification number: A61F13/51478 , A61F13/51476 , A61F2013/51409 , A61F2013/53445
Abstract: The present disclosure relates to a super absorbent polymer film having excellent moisture absorption and to an absorbent article excellent in feeling capable of reducing skin rashes and other irritations generated when warmed by the wearer's body by including the super absorbent polymer film to improve external dampness.
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公开(公告)号：US20230071674A1
公开(公告)日：2023-03-09
申请号：US17797004
申请日：2021-03-23
Applicant: LG Chem, Ltd.
Inventor： Kiyoul Yoon , Seongkyun Kang , Yu Jin Kim , Gicheul Kim , Hyosook Joo , Hyeon Choi , Se Yeol Park
IPC: C08J5/18 , C08F20/06 , C08J3/24 , C08J3/075 , C08F2/44 , C08F2/50 , B01J20/28 , B01J20/26 , B01J20/30 , B01J20/32
Abstract: The present disclosure relates to a preparation method for a super absorbent polymer film. Specifically, it relates to a preparation method for a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance. In addition, the super absorbent polymer film of the present disclosure has excellent flexibility and excellent mechanical properties, 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.
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公开(公告)号：US20220195074A1
公开(公告)日：2022-06-23
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：US20210179741A1
公开(公告)日：2021-06-17
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
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：US10882939B2
公开(公告)日：2021-01-05
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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