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公开(公告)号：US20200339719A1
公开(公告)日：2020-10-29
申请号：US16962963
申请日：2018-12-05
申请人： LG Chem, Ltd.
发明人： Ro Mi Lee , Hae Sung Sohn , Min Sik Mun , No Ma Kim , Heung Yeal Choi , Youk Reol Na , Su Min Na
摘要： 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.
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公开(公告)号：US20200002454A1
公开(公告)日：2020-01-02
申请号：US16475525
申请日：2017-12-08
申请人： LG Chem, Ltd.
发明人： Ho Young Lee , Ki Seok Son , Da Won Chai , No Ma Kim , Sun Keun Kim , Youk Reol Na , Hyoung Woo Lee , Heung Yeal Choi
IPC分类号： C08F236/10 , C08K3/36
摘要： 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 a rubber composition including the same.
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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
申请人： LG Chem, Ltd.
发明人： Kyung Chang Seo , Yu Jin Kim , Youk Reol Na , No Ma Kim
摘要： 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：US20220127446A1
公开(公告)日：2022-04-28
申请号：US17427263
申请日：2020-09-11
申请人： LG Chem, Ltd.
发明人： Hye Jung Shin , You Seok Seo , He Seung Lee , Youk Reol Na , Hyun Jun Kim , Ro Mi Lee , Kyoung Hwan Oh , Jae Sun Choi
摘要： 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.
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公开(公告)号：US11001661B2
公开(公告)日：2021-05-11
申请号：US16338842
申请日：2017-12-08
申请人： LG Chem, Ltd.
发明人： Hae Sung Sohn , Tae Chul Lee , He Seung Lee , No Ma Kim , Sun Keun Kim , Youk Reol Na , Kyung Chang Seo , Heung Yeal Choi
IPC分类号： C08C19/44 , C08K3/36 , C08K3/04 , C08F236/10 , C08F8/42
摘要： 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 of 30 wt % or more, and a rubber composition including the same.
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公开(公告)号：US10995163B2
公开(公告)日：2021-05-04
申请号：US16770367
申请日：2019-07-11
申请人： LG Chem, Ltd.
发明人： Ro Mi Lee , Tae Chul Lee , No Ma Kim , Youk Reol Na
IPC分类号： C08F12/08 , C08F2/06 , C08F10/10 , C08F10/14 , C08F8/42 , C08L9/06 , C08L23/16 , C08L23/22 , C08K3/04 , C08K3/36
摘要： A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of −90° C. to −50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.
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公开(公告)号：US20210009722A1
公开(公告)日：2021-01-14
申请号：US16770367
申请日：2019-07-11
申请人： LG Chem, Ltd.
发明人： Ro Mi Lee , Tae Chul Lee , No Ma Kim , Youk Reol Na
摘要： A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. In some embodiments, a modified conjugated diene-based polymer includes a 1,2-vinyl bond content of 30.0 wt % or less with respect to a total weight of the modified conjugated diene-based polymer, wherein the polymer has a glass transition temperature of −90° C. to −50° C., a mooney viscosity of 50 to 100 measured by ASTM D1646, polydispersity index (PDI) of 1.5 to 3.5, and a mooney relaxation ratio of 0.7 or less when measured at 110° C.
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公开(公告)号：US20220348700A1
公开(公告)日：2022-11-03
申请号：US17763305
申请日：2021-01-18
申请人： LG CHEM, LTD.
发明人： Ro Mi Lee , No Ma Kim , Youk Reol Na , Min Sik Mun , Ho Young Lee
摘要： The present invention relates to a modified conjugated diene-based polymer and a rubber composition including the same, and provides a modified conjugated diene-based polymer satisfying the following: a) a molecular weight distribution curve by gel permeation chromatography (GPC) has a unimodal shape; b) molecular weight distribution (PDI: MWD) is 1.00 or more and less than 1.70; c) cold flow is 1.00 or less; and d) the Si content is 100 ppm or more based on a total weight of the modified conjugated diene-based polymer.
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公开(公告)号：US20220162363A1
公开(公告)日：2022-05-26
申请号：US17440994
申请日：2020-09-11
申请人： LG Chem, Ltd.
发明人： Youk Reol Na , Ro Mi Lee , Suk Joon Yoo , Geun Seung Baek , Hye Jung Shin , You Seok Seo , Hyeon Jong Park , Hye Young Kim
IPC分类号： C08F236/14 , C08F8/42 , C08K3/36 , C08K5/544
摘要： A modified conjugated diene-based polymer, a rubber composition including the same, and a method of making 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, 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 alkoxysilane-based modifier.
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公开(公告)号：US20210395408A1
公开(公告)日：2021-12-23
申请号：US17287790
申请日：2020-09-03
申请人： LG Chem, Ltd.
发明人： Youk Reol Na , Jin Young Kim , Jae Sun Choi , No Ma Kim
摘要： A rubber composition having excellent abrasion resistance and improved viscoelasticity properties, and a tire manufactured using the same are disclosed herein. In some embodiments, a rubber composition includes a first synthetic rubber and a second synthetic rubber, and has an interaction parameter (χblend) defined by Mathematical Formula 1 at room temperature is 2.0×10−3 or more. The first synthetic rubber is a solution-polymerized modified conjugated diene-based rubber which has a 1,2-vinyl bond content of 50 wt % or more and includes a functional group bonded to at least one terminal, and the second synthetic rubber is a conjugated diene-based rubber which has a 1,2-vinyl bond content of less than 50 wt %.
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