Patents by Inventor You-seok Seo
You-seok Seo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230146440Abstract: The present invention relates to an oil-extended conjugated diene-based polymer or an oil-extended modified conjugated diene-based polymer, which has excellent wet skid resistance and abrasion resistance in a balanced way, and a rubber composition including the same, and by controlling the microstructure of the polymer such that a full width at half maximum (FWHM) value of a tan ? peak shown in a temperature range of -100° C. to 100° C. becomes 20° C. or higher in a tan ? graph in accordance with temperature, derived from dynamic viscoelasticity analysis by an Advanced Rheometric Expansion System (ARES), and by including a vegetable oil in a polymer, excellent viscoelasticity behavior properties may be shown, and accordingly, the improvement of overall physical properties may be expected.Type: ApplicationFiled: November 1, 2021Publication date: May 11, 2023Applicant: LG Chem, Ltd.Inventors: Kyoung Hwan Oh, You Seok Seo, He Seung Lee, Geun Seung Baek, Jae Moon Jun
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Publication number: 20230108559Abstract: The present invention relates to an oil-extended modified conjugated diene-based polymer having excellent tensile properties and abrasion resistance, a method for preparing same and a rubber composition including same, and provides an oil-extended modified conjugated diene-based polymer including a modified polymer chain including a repeating unit derived from a conjugated diene-based monomer and a functional group derived from an aminoalkoxysilane-based modifier; and a derived unit from a vegetable oil, wherein at least one of the modified polymer chain is coupled with the derived unit from vegetable oil, N and Si atoms are included in 100 ppm or more each based on a total weight of the polymer, two glass transition temperatures of Tg1 and Tg2 measured by differential scanning calorimetry (DSC) are shown, Tg1 is ?80° C. to ?20° C., Tg2 is ?50° C. to 30° C., and Tg2 is higher than Tg1, a method for preparing same and a rubber composition including same.Type: ApplicationFiled: October 12, 2021Publication date: April 6, 2023Applicant: LG CHEM, LTD.Inventors: Kyoung Hwan OH, You Seok SEO, Jae Sun CHOI
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Publication number: 20230038987Abstract: The present invention relates to a modified conjugated diene-based polymer having excellent wet skid resistance and abrasion resistance in a balanced way, and a rubber composition comprising the same, and the modified conjugated diene-based polymer is characterized in including: a repeating unit derived from a conjugated diene-based monomer; and a functional group derived from a modifier, wherein, if measured by differential scanning calorimetry (DSC) through controlling the microstructure of the polymer, a difference between a glass transition onset temperature (Tg-on) and a glass transition offset temperature (Tg-off), which arise glass transition, is 10° C. to 30° C., thereby having excellent wet skid resistance and running resistance in a balanced way and improved effects of abrasion resistance, simultaneously.Type: ApplicationFiled: November 3, 2021Publication date: February 9, 2023Applicant: LG Chem, Ltd.Inventors: Jin Young Kim, You Seok Seo, Suk Joon Yoo, He Seung Lee
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Patent number: 11414510Abstract: The present invention relates to a modified conjugated diene-based polymer, and more particularly, to a modified conjugated diene-based polymer prepared by continuous polymerization and having a specific polymer structure and molecular weight distribution degree and shape, and thus, having remarkable processability and narrow molecular weight distribution, and thus, having excellent physical properties, and a rubber composition including the same.Type: GrantFiled: November 30, 2018Date of Patent: August 16, 2022Inventors: Jung Hwan Oh, You Seok Seo, Jae Hoon Choe, Min Soo Kim, No Ma Kim
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Publication number: 20220162363Abstract: 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.Type: ApplicationFiled: September 11, 2020Publication date: May 26, 2022Applicant: LG Chem, Ltd.Inventors: Youk Reol Na, Ro Mi Lee, Suk Joon Yoo, Geun Seung Baek, Hye Jung Shin, You Seok Seo, Hyeon Jong Park, Hye Young Kim
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Publication number: 20220127446Abstract: 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.Type: ApplicationFiled: September 11, 2020Publication date: April 28, 2022Applicant: LG Chem, Ltd.Inventors: Hye Jung Shin, You Seok Seo, He Seung Lee, Youk Reol Na, Hyun Jun Kim, Ro Mi Lee, Kyoung Hwan Oh, Jae Sun Choi
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Publication number: 20200277426Abstract: The present invention relates to a modified conjugated diene-based polymer, and more particularly, to a modified conjugated diene-based polymer prepared by continuous polymerization and having a specific polymer structure and molecular weight distribution degree and shape, and thus, having remarkable processability and narrow molecular weight distribution, and thus, having excellent physical properties, and a rubber composition including the same.Type: ApplicationFiled: November 30, 2018Publication date: September 3, 2020Applicant: LG Chem, Ltd.Inventors: Jung Hwan Oh, You Seok Seo, Jae Hoon Choe, Min Soo Kim, No Ma Kim
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Patent number: 9926448Abstract: Provided are an asphalt modifier comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 and an asphalt composition comprising the asphalt modifier. (A-B-C)n-D??[Formula 1] (where A, B, C, D, and n are the same as defined in the specification) The asphalt modifier comprising the vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 may improve low-temperature and high-temperature physical properties when used in the asphalt composition, and since the asphalt modifier may also reduce dissolution time by increasing a dissolution rate, storage stability of the asphalt composition may be improved.Type: GrantFiled: July 3, 2015Date of Patent: March 27, 2018Assignee: LG Chem, Ltd.Inventors: You Seok Seo, Ji Myeong Lee, Tae Jung Kim, Chun Hwa Lee
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Asphalt modifying agent with improved mixing performance and asphalt composition containing the same
Patent number: 9822249Abstract: Disclosed are an asphalt modifying agent and an asphalt composition containing the same. More specifically, disclosed are an asphalt modifying agent comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer and a low-molecular weight conjugated diene rubber (LCDR), and an asphalt composition containing the same. Advantageously, the present invention provides an asphalt modifying agent for greatly improving low-temperature properties and modification workability of a modified asphalt and an asphalt composition containing the same.Type: GrantFiled: June 24, 2014Date of Patent: November 21, 2017Assignee: LG Chem, Ltd.Inventors: Chun Hwa Lee, Jung Eun Woo, You Seok Seo -
Publication number: 20160326371Abstract: Provided are an asphalt modifier comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 and an asphalt composition comprising the asphalt modifier. (A-B-C)n-D??[Formula 1] (where A, B, C, D, and n are the same as defined in the specification) The asphalt modifier comprising the vinyl aromatic hydrocarbon-conjugated diene block copolymer of Formula 1 may improve low-temperature and high-temperature physical properties when used in the asphalt composition, and since the asphalt modifier may also reduce dissolution time by increasing a dissolution rate, storage stability of the asphalt composition may be improved.Type: ApplicationFiled: July 3, 2015Publication date: November 10, 2016Applicant: LG Chem, Ltd.Inventors: You Seok Seo, Ji Myeong Lee, Tae Jung Kim, Chun Hwa Lee
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ASPHALT MODIFYING AGENT WITH IMPROVED MIXING PERFORMANCE AND ASPHALT COMPOSITION CONTAINING THE SAME
Publication number: 20160024292Abstract: Disclosed are an asphalt modifying agent and an asphalt composition containing the same. More specifically, disclosed are an asphalt modifying agent comprising a vinyl aromatic hydrocarbon-conjugated diene block copolymer and a low-molecular weight conjugated diene rubber (LCDR), and an asphalt composition containing the same. Advantageously, the present invention provides an asphalt modifying agent for greatly improving low-temperature properties and modification workability of a modified asphalt and an asphalt composition containing the same.Type: ApplicationFiled: June 24, 2014Publication date: January 28, 2016Applicant: LG Chem, Ltd.Inventors: Chun Hwa Lee, Jung Eun Woo, You Seok Seo -
Patent number: 8263693Abstract: The present invention provides a flame retardant resin composition comprising (A) 100 weight part of a basic resin comprising acrylonitrile-butadiene-styrene copolymer resin and styrene-acrylonitrile copolymer resin; and (B) 10-30 weight part of a bromine-based organic compound flame retardant, and selectively comprising (C) 1-20 weight part of an antimony-based auxiliary flame retardant and (D) 1-10 weight part of one or more compounds selected from the group consisting of metalstearate and stearamide compounds, wherein the bromine-based organic compound flame retardant (B) is octabromodiphenyl ethane. The flame retardant resin composition of the present invention has excellent flame retardancy, impact strength and melt flow index.Type: GrantFiled: August 29, 2008Date of Patent: September 11, 2012Assignee: LG Chem, Ltd.Inventors: You-seok Seo, Ki-young Nam, Yong-yeon Hwang, Je-sun Yoo, Hyeon-gook Kim, Myeong-soo Song
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Patent number: 8133942Abstract: Provided is a thermoplastic resin composition having excellent flame resistance, colorability, and scratch resistance, including: A) 100 parts by weight of a basic resin comprising 10 to 89 wt % of acrylonitrile-butadiene-styrene copolymer, 89 to 10 wt % of styrene-acrylonitrile copolymer, and 1 to 40 wt % of methylmethacrylate polymer; B) 1 to 30 parts by weight of bromoalkyl or bromophenyl cyanurate compounds; and C) 1 to 20 parts by weight of antimony compound, thereby, making it possible to provide the thermoplastic resin composition having excellent flame resistance, impact strength, scratch resistance, colorability, and surface hardness as synergy effects.Type: GrantFiled: September 17, 2009Date of Patent: March 13, 2012Assignee: LG Chem, Ltd.Inventors: Je-sun Yoo, Ki-young Nam, Yong-yeon Hwang, You-seok Seo, Hyeon-gook Kim, Myeong-soo Song
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Publication number: 20100210773Abstract: The present invention provides a flame retardant resin composition comprising (A) 100 weight part of a basic resin comprising acrylonitrile-butadiene-styrene copolymer resin and styrene-acrylonitrile copolymer resin; and (B) 10-30 weight part of a bromine-based organic compound flame retardant, and selectively comprising (C) 1-20 weight part of an antimony-based auxiliary flame retardant and (D) 1-10 weight part of one or more compounds selected from the group consisting of metalstearate and stearamide compounds, wherein the bromine-based organic compound flame retardant (B) is octabromodiphenyl ethane. The flame retardant resin composition of the present invention has excellent flame retardancy, impact strength and melt flow index.Type: ApplicationFiled: August 29, 2008Publication date: August 19, 2010Inventors: You-seok Seo, Xi-young Nam, Yong-Yeon Hwang, Je-sun Yoo, Hyeon-gook Kim, Myeong-soo Song
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Publication number: 20100069540Abstract: Provided is a thermoplastic resin composition having excellent flame resistance, colorability, and scratch resistance, including: A) 100 parts by weight of a basic resin comprising 10 to 89 wt % of acrylonitrile-butadiene-styrene copolymer, 89 to 10 wt % of styrene-acrylonitrile copolymer, and 1 to 40 wt % of methylmethacrylate polymer; B) 1 to 30 parts by weight of bromoalkyl or bromophenyl cyanurate compounds; and C) 1 to 20 parts by weight of antimony compound, thereby, making it possible to provide the thermoplastic resin composition having excellent flame resistance, impact strength, scratch resistance, colorability, and surface hardness as synergy effects.Type: ApplicationFiled: September 17, 2009Publication date: March 18, 2010Applicant: LG Chem, Ltd.Inventors: Je-sun Yoo, Ki-young Nam, Yong-yeon Hwang, You-seok Seo, Hyeon-gook Kim, Myeong-soo Song